1.5A, Low Voltage, Low Quiescent Current LDO Regulator

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© 2007 Microchip Technology Inc.

DS22026B-page 1

MCP1725

Features

• 500 mA Output Current Capability

• Input Operating Voltage Range: 2.3V to 6.0V

• Adjustable Output Voltage Range: 0.8V to 5.0V

• Standard Fixed Output Voltages:

- 0.8V, 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V

• Other Fixed Output Voltage Options Available 

Upon Request

• Low Dropout Voltage: 210 mV typical at 500 mA

• Typical Output Voltage Tolerance: 0.5%

• Stable with 1.0 µF Ceramic Output Capacitor

• Fast response to Load Transients

• Low Supply Current: 120 µA (typical)

• Low Shutdown Supply Current: 0.1 µA (typical)

• Adjustable Delay on Power Good Output

• Short Circuit Current Limiting and 

Overtemperature Protection

• 2x3 DFN-8 and SOIC-8 Package Options

Applications

• High-Speed Driver Chipset Power

• Networking Backplane Cards

• Notebook Computers

• Network Interface Cards

• Palmtop Computers

• Video Graphics Adapters

• 2.5V to 1.XV Regulators

Description

The MCP1725 is a 500 mA Low Dropout (LDO) linear
regulator that provides high current and low output
voltages in a very small package. The MCP1725
comes in a fixed (or adjustable) output voltage version,
with an output voltage range of 0.8V to 5.0V. The
500 mA output current capability, combined with the
low output voltage capability, make the MCP1725 a
good choice for new sub-1.8V output voltage LDO
applications that have high current demands.

The MCP1725 is stable using ceramic output
capacitors that inherently provide lower output noise
and reduce the size and cost of the entire regulator
solution. Only 1 µF of output capacitance is needed to
stabilize the LDO. 

Using CMOS construction, the quiescent current
consumed by the MCP1725 is typically less than
120 µA over the entire input voltage range, making it
attractive for portable computing applications that
demand high output current. When shut down, the
quiescent current is reduced to less than 0.1 µA.

The scaled-down output voltage is internally monitored
and a power good (PWRGD) output is provided when
the output is within 92% of regulation (typical). An
external capacitor can be used on the C

DELAY

 pin to

adjust the delay from 200 µs to 300 ms.

The overtemperature and short circuit current-limiting
provide additional protection for the LDO during system
fault conditions.

Package Types

V

IN

V

IN

SHDN

GND

PWRGD

C

DELAY

Sense

V

OUT

V

IN

V

IN

SHDN

GND

PWRGD

C

DELAY

ADJ

V

OUT

Adjustable (SOIC-8)

Fixed (SOIC-8)

V

IN

V

IN

SHDN

GND

PWRGD

C

DELAY

Sense

V

OUT

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8

Fixed (2x3 DFN)

V

IN

V

IN

SHDN

GND

PWRGD

C

DELAY

V

OUT

Adjustable (2x3 DFN)

ADJ

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

Note:

DFN tab is at ground potential.

500 mA, Low Voltage, Low Quiescent Current LDO Regulator

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MCP1725

DS22026B-page 2

© 2007 Microchip Technology Inc.

Typical Application

MCP1725 Adjustable Output Voltage

V

IN

SHDN

GND

PWRGD

C

DELAY

ADJ

V

OUT

1

2

3

4

5

6

7

8

1 µF

PWRGD

V

OUT

 = 1.2V @ 500 mA

100 k

Ω

4.7 µF

V

IN

 = 2.3V to 2.8V

On

Off

V

IN

20 k

Ω

40 k

Ω

R

1

R

2

C

1

C

2

R

3

1000 pF

C

3

MCP1725 Fixed Output Voltage

V

IN

SHDN

GND

PWRGD

C

DELAY

Sense

V

OUT

1

2

3

4

5

6

7

8

PWRGD

V

OUT

 = 1.8V @ 500 mA

V

IN

 = 2.3V to 2.8V

On

Off

V

IN

1 µF

100 k

Ω

4.7 µF

C

1

C

2

R

1

1000 pF

C

3

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© 2007 Microchip Technology Inc.

DS22026B-page 3

MCP1725

Functional Block Diagram - Adjustable Output

EA

+

V

OUT

PMOS

R

f

C

f

I

SNS

Overtemperature

V

REF

Comp

92% of V

REF

T

DELAY

PWRGD

C

DELAY

V

IN

Driver w/limit

and SHDN

GND

Soft-Start

ADJ

Undervoltage 

Lock Out

VIN

 

Reference

SHDN

SHDN

SHDN

Sensing

(UVLO)

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MCP1725

DS22026B-page 4

© 2007 Microchip Technology Inc.

Functional Block Diagram - Fixed Output

EA

+

V

OUT

PMOS

R

f

C

f

I

SNS

Overtemperature

V

REF

Comp

92% of V

REF

T

DELAY

PWRGD

C

DELAY

V

IN

Driver w/limit

and SHDN

GND

Soft-Start

Sense

Undervoltage 

Lock Out

VIN

 

Reference

SHDN

SHDN

SHDN

Sensing

(UVLO)

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© 2007 Microchip Technology Inc.

DS22026B-page 5

MCP1725

1.0

ELECTRICAL 
CHARACTERISTICS

Absolute Maximum Ratings †

V

IN

......................................................................... 6.5V

Maximum Voltage on Any Pin

........................................(GND –  0.3V) to (V

IN 

+ 0.3)V

Maximum Power Dissipation............. Internally-Limited 
(

Note 6)

Output Short Circuit Duration ..................... Continuous
Storage temperature .......................... -65°C to +150°C
Maximum Junction Temperature, T

J

................ +150°C

ESD protection on all pins (HBM/MM)

.. ≥  2 kV;  ≥ 200V

† Notice: Stresses above those listed under “Maximum
Ratings” may cause permanent damage to the device.
This is a stress rating only and functional operation of
the device at those or any other conditions above those
indicated in the operational listings of this specification
is not implied. Exposure to maximum rating conditions
for extended periods may affect device reliability.

AC/DC CHARACTERISTICS

Electrical Specifications: Unless otherwise noted, V

IN 

= V

OUT(MAX)

 + V

DROPOUT(MAX)

 

(Note 1), V

R

 = 1.8V for Adjustable Output, 

I

OUT

 = 1 mA, C

IN

 = C

OUT

 = 4.7 µF (X7R Ceramic), T

A

 = +25°C.

Boldface type applies for junction temperatures, T

(

Note 7) of -40°C to +125°C 

Parameters

Sym

Min

Typ

Max

Units

Conditions

Input Operating Voltage

V

IN

2.3

6.0

V

Note 1

Input Quiescent Current

I

q

120

220

µA

I

L

 = 0 mA, V

IN

 = 

Note 1,

V

OUT

 = 0.8V to 5.0V

Input Quiescent Current for 
SHDN Mode

I

SHDN

0.1

3

µA

SHDN = GND

Maximum Output Current

I

OUT

500

mA

V

IN

 = 2.3V to 6.0V

V

R

 = 0.8V to 5.0V, 

Note 1

Line Regulation

ΔV

OUT

/

(V

OUT 

ΔV

IN

)

±0.05

±

0.16

%/V

(Note 1)

 ≤ V

IN

 

≤ 6V 

Load Regulation

ΔV

OUT

/V

OUT

-1.0

±0.5

1.0

%

I

OUT

 = 1 mA to 500 mA,

(

Note 4)

Output Short Circuit Current

I

OUT_SC

1.2

A

R

LOAD

< 0.1

Ω, Peak Current

Adjust Pin Characteristics (Adjustable Output Only)

Adjust Pin Reference Voltage

V

ADJ

0.402

0.410

0.418

V

V

IN

 = 2.3V to V

IN

= 6.0V,

I

OUT 

= 1 mA

Adjust Pin Leakage Current

I

ADJ

-10

±0.01

+10

nA

V

IN

 = 6.0V, V

ADJ

= 0V to 6V

Adjust Temperature Coefficient

TCV

OUT

40

ppm/°C

Note 3

Fixed-Output Characteristics (Fixed Output Only)

Voltage Regulation

V

OUT

V

- 2.5% V

±0.5%

V

+ 2.5%

V

Note 2

Note 1:

The minimum V

IN

 must meet two conditions: V

IN

 ≥ 2.3V and V

IN

 

 ≥ V

OUT(MAX)

 + V

DROPOUT(MAX).

2:

V

R

 is the nominal regulator output voltage for the fixed cases. V

R

 = 1.2V, 1.8V, etc. V

R

 is the desired set point output 

voltage for the adjustable cases. V

R

 = V

ADJ

 

((R

1

/R

2

)+1). 

Figure 4-1

.

3:

TCV

OUT

 = (V

OUT-HIGH

 – V

OUT-LOW

) *10

6

 / (V

R

 * 

ΔTemperature). V

OUT-HIGH

 is the highest voltage measured over the 

temperature range. V

OUT-LOW

 is the lowest voltage measured over the temperature range.

4:

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is 
tested over a load range from 1 mA to the maximum specified output current.

5:

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its 
nominal value that was measured with an input voltage of V

OUT

 = V

R

 + V

DROPOUT(MAX)

.

6:

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction 
temperature and the thermal resistance from junction to air. (i.e., T

A

, T

J

θ

JA

). Exceeding the maximum allowable power 

dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained 
junction temperatures above +150°C can impact device reliability.

7:

The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the 
desired junction temperature. The test time is small enough such that the rise in the junction temperature over the 
ambient temperature is not significant.

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MCP1725

DS22026B-page 6

© 2007 Microchip Technology Inc.

Dropout Characteristics

Dropout Voltage

V

IN

-V

OUT

210

350

mV

I

OUT

 = 500 mA,

 (Note 5) 

V

IN(MIN)

= 2.3V

Power Good Characteristics

PWRGD Input Voltage Operat-
ing Range 

V

PWRGD_VIN

1.0

6.0

V

T

A

 = +25°C

1.2

6.0

T

A

 = -40°C to +125°C

For V

IN

 < 2.3V, I

SINK

= 100 µA

PWRGD Threshold Voltage
(Referenced to V

OUT

)

V

PWRGD_TH

%V

OUT

Falling Edge

89

92

95

V

OUT 

< 2.5V Fixed, V

OUT

 = 

Adj.

90

92

94

V

OUT 

>= 2.5V Fixed

PWRGD Threshold Hysteresis

V

PWRGD_HYS

1.0

2.0

3.0

%V

OUT

PWRGD Output Voltage Low

V

PWRGD_L

0.2

0.4

V

I

PWRGD

 

SINK

 = 1.2 mA,

ADJ = 0V, SENSE = 0V

PWRGD Leakage

P

WRGD

_

LK

1

nA

V

PWRGD

 = V

IN

 = 6.0V

PWRGD Time Delay

T

PG

Rising Edge
R

PULLUP

 = 10 k

Ω

I

CDELAY

 = 140 nA (Typ)

200

µs

C

DELAY

= OPEN

10

30

55

ms

C

DELAY

= 0.01 µF

300

ms

C

DELAY

= 0.1 µF

Detect Threshold to PWRGD 
Active Time Delay

T

VDET-PWRGD

200

µs

V

ADJ

 or V

SENSE

 = 

V

PWRGD_TH

 + 20 mV to 

V

PWRGD_TH

 - 20 mV

Shutdown Input

Logic High Input 

V

SHDN-HIGH

45

%V

IN

V

IN

 = 2.3V to 6.0V

Logic Low Input 

V

SHDN-LOW

15

%V

IN

V

IN

 = 2.3V to 6.0V

SHDN Input Leakage Current

SHDN

ILK

-0.1

±0.001

+0.1

µA

V

IN

= 6V,  SHDN =V

IN

,

SHDN = GND

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise noted, V

IN 

= V

OUT(MAX)

 + V

DROPOUT(MAX)

 

(Note 1), V

R

 = 1.8V for Adjustable Output, 

I

OUT

 = 1 mA, C

IN

 = C

OUT

 = 4.7 µF (X7R Ceramic), T

A

 = +25°C.

Boldface type applies for junction temperatures, T

(

Note 7) of -40°C to +125°C 

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

The minimum V

IN

 must meet two conditions: V

IN

 ≥ 2.3V and V

IN

 

 ≥ V

OUT(MAX)

 + V

DROPOUT(MAX).

2:

V

R

 is the nominal regulator output voltage for the fixed cases. V

R

 = 1.2V, 1.8V, etc. V

R

 is the desired set point output 

voltage for the adjustable cases. V

R

 = V

ADJ

 

((R

1

/R

2

)+1). 

Figure 4-1

.

3:

TCV

OUT

 = (V

OUT-HIGH

 – V

OUT-LOW

) *10

6

 / (V

R

 * 

ΔTemperature). V

OUT-HIGH

 is the highest voltage measured over the 

temperature range. V

OUT-LOW

 is the lowest voltage measured over the temperature range.

4:

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is 
tested over a load range from 1 mA to the maximum specified output current.

5:

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its 
nominal value that was measured with an input voltage of V

OUT

 = V

R

 + V

DROPOUT(MAX)

.

6:

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction 
temperature and the thermal resistance from junction to air. (i.e., T

A

, T

J

θ

JA

). Exceeding the maximum allowable power 

dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained 
junction temperatures above +150°C can impact device reliability.

7:

The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the 
desired junction temperature. The test time is small enough such that the rise in the junction temperature over the 
ambient temperature is not significant.

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© 2007 Microchip Technology Inc.

DS22026B-page 7

MCP1725

TEMPERATURE SPECIFICATIONS

AC Performance

Output Delay From SHDN

T

OR

100

µs

SHDN = GND to V

IN

 

V

OUT

 = GND to 95% V

R

 

Output Noise

e

N

2.0

µV/

√Hz I

OUT

 = 200 mA, f = 1 kHz, 

C

OUT

 = 10 µF (X7R Ceramic), 

V

OUT

 = 2.5V

Power Supply Ripple Rejection 
Ratio

PSRR

60

dB

f = 100 Hz, C

OUT

 = 10 µF,

I

OUT

 = 10 mA, 

V

INAC

 = 30 mV pk-pk,

C

IN

 = 0 µF

Thermal Shutdown Temperature

T

SD

150

°C

I

OUT

 = 100 µA, V

OUT

 = 1.8V, 

V

IN

 = 2.8V

Thermal Shutdown Hysteresis

ΔT

SD

10

°C

I

OUT

 = 100 µA, V

OUT

 = 1.8V, 

V

IN

 = 2.8V

Electrical Specifications: Unless otherwise indicated, all limits apply for V

IN 

= 2.3V to 6.0V.

Parameters

Sym

Min

Typ

Max

Units

Conditions

Temperature Ranges

Operating Junction Temperature Range

T

J

-40

+125

°C

Steady State

Maximum Junction Temperature

T

J

+150

°C

Transient

Storage Temperature Range

T

A

-65

+150

°C

Thermal Package Resistances

Thermal Resistance, 8LD 2x3 DFN

θ

JA

76

°C/W

4-Layer JC51-7 
Standard Board with 
vias

θ

JC

26

°C/W

Thermal Resistance, 8LD SOIC

θ

JA

163

°C/W

4-Layer JC51-7 
Standard Board

θ

JC

38.8

°C/W

AC/DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise noted, V

IN 

= V

OUT(MAX)

 + V

DROPOUT(MAX)

 

(Note 1), V

R

 = 1.8V for Adjustable Output, 

I

OUT

 = 1 mA, C

IN

 = C

OUT

 = 4.7 µF (X7R Ceramic), T

A

 = +25°C.

Boldface type applies for junction temperatures, T

(

Note 7) of -40°C to +125°C 

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

The minimum V

IN

 must meet two conditions: V

IN

 ≥ 2.3V and V

IN

 

 ≥ V

OUT(MAX)

 + V

DROPOUT(MAX).

2:

V

R

 is the nominal regulator output voltage for the fixed cases. V

R

 = 1.2V, 1.8V, etc. V

R

 is the desired set point output 

voltage for the adjustable cases. V

R

 = V

ADJ

 

((R

1

/R

2

)+1). 

Figure 4-1

.

3:

TCV

OUT

 = (V

OUT-HIGH

 – V

OUT-LOW

) *10

6

 / (V

R

 * 

ΔTemperature). V

OUT-HIGH

 is the highest voltage measured over the 

temperature range. V

OUT-LOW

 is the lowest voltage measured over the temperature range.

4:

Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is 
tested over a load range from 1 mA to the maximum specified output current.

5:

Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its 
nominal value that was measured with an input voltage of V

OUT

 = V

R

 + V

DROPOUT(MAX)

.

6:

The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction 
temperature and the thermal resistance from junction to air. (i.e., T

A

, T

J

θ

JA

). Exceeding the maximum allowable power 

dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained 
junction temperatures above +150°C can impact device reliability.

7:

The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the 
desired junction temperature. The test time is small enough such that the rise in the junction temperature over the 
ambient temperature is not significant.

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MCP1725

DS22026B-page 8

© 2007 Microchip Technology Inc.

2.0

TYPICAL PERFORMANCE CURVES

Note: Unless otherwise indicated, V

IN

 = V

OUT

 + 0.5V or V

IN

 = 2.3V (whichever is greater), I

OUT

 = 1 mA, C

IN

 = C

OUT

 =

4.7 µF Ceramic (X7R), SHDN = V

IN

, C

DELAY

 = Open, Fixed Output Version, and T

= +25°C.

Note: Junction Temperature (T

J

) is approximated by soaking the device under test to an ambient temperature equal to

the desired junction temperature. The test time is small enough such that the rise in Junction Temperature over the
Ambient temperature is not significant.

FIGURE 2-1:

Quiescent Current vs. Input 

Voltage (1.8V Adjustable).

FIGURE 2-2:

Ground Current vs. Load 

Current (1.2V Adjustable).

FIGURE 2-3:

Quiescent Current vs. 

Junction Temperature (1.8V Adjustable).

FIGURE 2-4:

Line Regulation vs. 

Temperature (1.8V Adjustable).

FIGURE 2-5:

Load Regulation vs. 

Temperature (Adjustable Version).

FIGURE 2-6:

Adjust Pin Voltage vs. 

Temperature.

Note:

The graphs and tables provided following this note are a statistical summary based on a limited number of samples and
are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed.
In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power
supply range) and therefore outside the warranted range.

80

90

100

110

120

130

140

150

2

3

4

5

6

Input Voltage (V)

Qu

iesc

en

t C

u

rr

en

t (

µ

A)

-45°C

0°C

+25°C

+90°C

+130°C

I

OUT

 = 0 mA

120

130

140

150

160

170

180

190

200

210

0

100

200

300

400

500

Load Current (mA)

G

rou

nd

 C

u

rr

ent

 (

µ

A

)

V

IN

 = 5.0V

V

IN

 = 3.3V

V

IN

 = 2.5V

V

OUT

 = 1.2V Adj

80

90

100

110

120

130

140

150

-45

-20

5

30

55

80

105

130

Temperature (°C)

Qu

ie

sce

nt

 Cu

rr

en

A)

V

IN

 = 5.0V

V

IN

 = 2.3V

V

IN

 = 3.3V

V

IN

 = 6.0V

I

OUT

 = 0 mA

0.00

0.02

0.04

0.06

0.08

0.10

0.12

-45

-20

5

30

55

80

105

130

Temperature (°C)

Li

n

e

 Re

gu

la

ti

o

n

 (%/

V

)

I

OUT

 = 1 mA

I

OUT

 = 50 mA

I

OUT

 = 250 mA

I

OUT

 = 100 mA

I

OUT

 = 500 mA

V

IN

 = 2.3V to 6.0V

0.00

0.02

0.04

0.06

0.08

0.10

0.12

0.14

0.16

0.18

0.20

-45

-20

5

30

55

80

105

130

Temperature (°C)

L

o

ad

 Re

gula

ti

o

(%

)

V

OUT

 = 5V

V

OUT

 = 3.3V

V

OUT

 = 1.8V

V

OUT

 = 0.8V

I

OUT

 = 1.0 mA to 500 mA

0.408

0.409

0.410

0.411

0.412

-45

-20

5

30

55

80

105

130

Temperature (°C)

A

d

ju

st

 P

in

 Vo

lta

g

e (V

)

V

IN

 = 5.0V

V

IN

 = 6.0V

V

IN

 = 2.3V, 3.0V, 4.0V

I

OUT

 = 1 mA

/var/www/html/datasheet/sites/default/files/pdfhtml_dummy/22026b-html.html
background image

© 2007 Microchip Technology Inc.

DS22026B-page 9

MCP1725

Note: Unless otherwise indicated, V

IN

 = V

OUT

 + 0.5V or V

IN

 = 2.3V (whichever is greater), I

OUT

 = 1 mA,

C

IN

 = C

OUT

 = 4.7 µF Ceramic (X7R), SHDN = V

IN

, C

DELAY

 = Open, Fixed Output Version, and T

= +25°C

.

FIGURE 2-7:

Dropout Voltage vs. Load 

Current (Adjustable Version).

FIGURE 2-8:

Dropout Voltage vs. 

Temperature (Adjustable Version).

FIGURE 2-9:

Power Good (PWRGD) 

Time Delay vs. Temperature (Adjustable 
Version).

FIGURE 2-10:

Quiescent Current vs. Input 

Voltage (0.8V Fixed).

FIGURE 2-11:

Quiescent Current vs. Input 

Voltage (2.5V Fixed).

FIGURE 2-12:

Ground Current vs. Load 

Current.

0.00

0.05

0.10

0.15

0.20

0.25

0

100

200

300

400

500

Load Current (mA)

D

rop

out

 Vo

lt

ag

e (

V

)

V

OUT

 = 2.5V

V

OUT

 = 5.0V

0.16

0.18

0.20

0.22

0.24

0.26

0.28

-45

-20

5

30

55

80

105

130

Temperature (°C)

Dropo

ut Vo

lt

ag

e (V)

V

OUT

 = 2.5V

V

OUT

 = 5.0V

V

OUT

 = 3.3V

I

OUT

 = 500 mA

25

26

27

28

29

30

31

32

33

34

35

-45

-20

5

30

55

80

105

130

Temperature (°C)

Po

w

er

 Good Time De

la

(ms

)

V

IN

 = 2.3V

V

IN

 = 3.0V

V

IN

 = 5.0V

C

DELAY

 = 0.01 µF

I

OUT

 = 0 mA

80

90

100

110

120

130

140

150

2

3

4

5

6

Input Voltage (V)

Qui

e

sc

en

t C

u

rre

nt 

(µA

)

-45°C

+130°C

+90°C

+25°C

0°C

I

OUT

 = 0 mA

90

100

110

120

130

140

150

3

3.5

4

4.5

5

5.5

6

Input Voltage (V)

Qu

iesc

en

t C

u

rr

en

t (

µ

A)

-45°C

0°C

+25°C +90°C

+135°C

I

OUT

 = 0 mA

110

130

150

170

190

210

0

100

200

300

400

500

Load Current (mA)

Gr

ou

nd

 Cu

rren

t (µA)

V

OUT

 = 5.0V

V

OUT

 = 2.5V

/var/www/html/datasheet/sites/default/files/pdfhtml_dummy/22026b-html.html
background image

MCP1725

DS22026B-page 10

© 2007 Microchip Technology Inc.

Note: Unless otherwise indicated, V

IN

 = V

OUT

 + 0.5V or V

IN

 = 2.3V (whichever is greater), I

OUT

 = 1 mA,

C

IN

 = C

OUT

 = 4.7 µF Ceramic (X7R), SHDN = V

IN

, C

DELAY

 = Open, Fixed Output Version, and T

= +25°C

.

FIGURE 2-13:

Quiescent Current vs. 

Junction Temperature.

FIGURE 2-14:

I

SHDN

 vs. Temperature.

FIGURE 2-15:

Line Regulation vs. 

Temperature (0.8V Fixed).

FIGURE 2-16:

Line Regulation vs. 

Temperature (2.5V Fixed).

FIGURE 2-17:

Load Regulation vs. 

Temperature (V

OUT

 < 2.5V Fixed).

FIGURE 2-18:

Load Regulation vs. 

Temperature (V

OUT

 

≥ 

2.5V Fixed).

80

90

100

110

120

130

140

-45

-20

5

30

55

80

105

130

Junction Temperature (°C)

Qu

ie

s

ce

n

t C

u

rr

en

t (µ

A

)

V

OUT

 = 0.8V

V

OUT

 = 2.5V

I

OUT

 = 0 mA

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

-45

-20

5

30

55

80

105

130

Temperature (°C)

I

SH

D

N

 (µ

A

)

V

IN

 = 2.3V

V

IN

 = 6.0V

V

IN

 = 3.3V

V

OUT

 = 0.8V

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

-45

-20

5

30

55

80

105

130

Temperature (°C)

Li

n

e

 Re

gu

la

ti

o

n

 (%/

V

)

I

OUT

 = 1 mA

I

OUT

 = 500 mA

I

OUT

 = 250 mA

I

OUT

 = 100 mA

I

OUT

 = 50 mA

V

IN

 = 2.3V to 6.0V

V

OUT

 = 0.8V

0.010

0.015

0.020

0.025

0.030

0.035

0.040

0.045

0.050

-45

-20

5

30

55

80

105

130

Temperature (°C)

Line

 R

egulat

io

n

 (%/V)

I

OUT

 = 1 mA

I

OUT

 = 250 mA

I

OUT

 = 500 mA

I

OUT

 = 100 mA

I

OUT

 = 50 mA

V

OUT

= 2.5V

V

IN

 = 3.0V to 6.0V

0.02

0.04

0.06

0.08

0.10

0.12

0.14

0.16

0.18

0.20

-45

-20

5

30

55

80

105

130

Temperature (°C)

Lo

ad

 R

e

g

u

la

tion 

(%)

V

OUT

 = 1.2V

I

OUT

 = 1.0 mA to 500 mA

V

OUT

 = 0.8V

-0.35

-0.30

-0.25

-0.20

-0.15

-0.10

-0.05

0.00

-45

-20

5

30

55

80

105

130

Temperature (°C)

Lo

ad

 Re

g

u

la

ti

on

 (

%

)

V

OUT

 = 2.5V

V

OUT

 = 5.0V

I

OUT

 = 1.0 mA to 500 mA

Maker
Microchip Technology Inc.
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