UCS2113 Data Sheet

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 2016 Microchip Technology Inc.

DS20005680A-page 1

UCS2113

Features

• Dual-Port Power Switches:

- 2.9V to 5.5V source voltage range
- 3.0A continuous current per V

BUS

 port with 

40 m

 On resistance per switch

- Independent port power switch enable pins
- DUAL fault ALERT# active drain output pins
- Constant Current or Trip mode current 

limiting behaviors

- Undervoltage and overvoltage lockout
- Back-drive, back-voltage protection
- Auto-recovery fault handling with low test 

current

- BOOST# logic output to increase DC-DC 

converter output under large load conditions

• SMBus 2.0/I

2

C Mode Features:

- Eight programmable current limits assignable 

to each power switch

- Other SMBus addresses available upon 

request

- Block read and block write

• Self-Contained Current Monitoring (No External 

Sense Resistor Required)

• Fully Programmable Per-Port Charge Rationing 

and Behaviors

• Configurable Per-Port BC1.2 V

BUS

 Discharge 

Function

• Wide Operating Temperature Range: 

- -40°C to +105°C

• UL Recognized and EN/IEC 60950-1 (CB) 

Certified

Description

The UCS2113 is a dual USB port power switch
configuration which can provide 3.0A continuous
current (3.4A maximum) per V

BUS

 port with precision

overcurrent limiting (OCL), port power switch enables,
auto-recovery fault handling, undervoltage and
overvoltage lockout, back-drive protection and
back-voltage protection, and thermal protection.
The UCS2113 is well suited for both stand-alone and
applications having SMBus/I

2

C communications.

For applications with SMBus, the UCS2113 provides
per-port current monitoring and eight programmable
current limits per switch, ranging from 0.53A to 3.0A
continuous current (3.4A maximum). Per-port charge
rationing is also provided ranging from 3.8 mAh

 

to

246.3 Ah.
In stand-alone mode, the UCS2113 provides eight
current limits for both switches, ranging from
0.53A + 0.53A to 3A + 3A total continuous current
(see

Table 1-1

).

Both power switches include an independent V

BUS

discharge function and constant current mode current
limiting for BC1.2 applications.
The UCS2113 is available in a 4x4 mm 20-pin QFN
package. 

Package Type

ALE

R

T#2

2

BOOST#

V

BUS1

PWR_EN1

PWR_EN2

GND

V

S

COMM_ILIM

V

S

V

DD

V

S

V

BUS2

AL

E

R

T#

1

GND

SM

D

A

TA

SM

C

L

K

GND

EP

20

1

19 18 17

3

4

14

13

12

11

6

7

8

9

21

5

10

15

16

V

BUS1

V

S

V

BUS2

UCS2113

4 x 4  QFN*

Includes Exposed Thermal Pad (EP); see 

Table 3-1

.

USB Dual-Port Power Switch and Current Monitor

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UCS2113

DS20005680A-page 2

 2016 Microchip Technology Inc.

Block Diagram

Charger 

Control, 

Measurement, 

OCL

In

te

rfa

ce Lo

gic

SMCLK

SMDATA

PWR_EN2

Power

Switch 2

Temp

ALERT#2

V

BUS

GND

COMM_ILIM

Power

Switch 1

V

BUS

V

S

UVLO, 

OVLO

PWR_EN1

BOOST#

ALERT#1

V

BUS

discharge

V

DD

V

S

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 2016 Microchip Technology Inc.

DS20005680A-page 3

UCS2113

1.0

ELECTRICAL 
CHARACTERISTICS 

Absolute Maximum Ratings †

Voltage on V

DD

, V

S

, and V

BUS

 pins ...................................................................................................................-0.3 to 6V

Pull-Up Voltage (V

PULLUP

) ..................................................................................................................... -0.3 to V

DD

 + 0.3

Port Power Switch Current ..................................................................................................................... Internally limited
Voltage on any Other Pin to Ground ...................................................................................................-0.3 to V

DD

 + 0.3V

Current on any Other Pin ..................................................................................................................................... ±10 mA
Package Power Dissipation ........................................................................................................................ See 

Table 1-1

Operating Ambient Temperature Range.................................................................................................-40°C to +105°C
Storage Temperature Range ..................................................................................................................-55°C to +150°C

† 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
operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.

 

 

TABLE 1-1:

POWER DISSIPATION SUMMARY 

Board

Package

JC

JA

Derating Factor 

Above +25°C

T

A

 < +25°C 

Power Rating

T

A

 = +70°C 

Power Rating

T

A

 = +85°C 

Power Rating

High K 
(

Note

)

20-pin QFN 

4x4 mm

6 °C/W

41 °C/W

24.4 mW/°C

2193 mW

1095 mW

729 mW

Low K
(

Note

)

20-pin QFN 

4x4 mm

6 °C/W

60 °C/W

16.67 mW/°C

1498 mW

748 mW

498 mW

Note:

A High-K board uses a thermal via design with the thermal landing soldered to the PCB ground plane with
0.3 mm (12 mil) diameter vias in a 3x3 matrix (9 total) at 0.5 mm (20 mil) pitch. The board is multilayer with
1-ounce internal power and ground planes and 2-ounce copper traces on top and bottom. A Low-K board
is a two-layer board without thermal via design with 2-ounce copper traces on the top and bottom. 

TABLE 1-2:

ELECTRICAL SPECIFICATIONS

Electrical Characteristics: Unless otherwise specified, V

DD

 = 4.5V to 5.5V, V

S

 = 2.9V to 5.5V, 

V

PULLUP

 = 3V to 5.5V, T

A

 

= -40°C to 105°C. All typical values at V

DD

 = V

S

 = 5V, T

A

 = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Power and Interrupts - DC 
Supply Voltage 

V

DD

4.5

5

5.5

V

Supply Current in Active 
(I

DD_ACT

 + I

S1_ACT

 + I

S2_ACT

)

I

ACTIVE 

700

 µA

Average current I

BUS

 = 0 mA

Supply Current in Sleep 
(I

DD_SLEEP

 + I

S1_SLEEP

 + 

I

S2_SLEEP

)

I

SLEEP

6

20

 µA

Average current V

PULLUP

 

 V

DD

Power-On Reset
V

DD

 Low Threshold

V

DD_TH

4

4.3

V

V

DD

 voltage increasing (

Note 1

)

V

DD

 Low Hysteresis

V

DD_TH_HYST

500

600

mV

V

DD

 voltage decreasing (

Note 1

)

Note 1:

This parameter is characterized, not 100% tested.

2:

This parameter is ensured by design and not 100% tested.

3:

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above 
I

LIM

 (if I

BUS_R2MIN

 

 I

LIM

) or above I

BUS_R2MIN

 (if I

BUS_R2MIN

 > I

LIM

 and I

LIM

 

 1.6A).

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UCS2113

DS20005680A-page 4

 2016 Microchip Technology Inc.

I/O Pins - SMCLK, SMDATA, PWR_EN, ALERT#, BOOST# - DC Parameters
Output Low Voltage

V

OL

0.4

V

I

SINK_IO

 = 8 mA

SMDATA, ALERT#, BOOST# 

Input High Voltage

V

IH

2.0

V

PWR_EN, SMDATA, SMCLK

Input Low Voltage

V

IL

0.8

V

PWR_EN, SMDATA, SMCLK

Leakage Current

I

LEAK

±5

 µA

Powered or unpowered
V

PULLUP

 

 V

DD

T

A

 < 85°C (

Note 1

)

Interrupt Pins - AC Parameters
ALERT# Pin Blanking Time

t

BLANK

25

ms

Blanking time, coming out of 
reset

ALERT# Pin Interrupt 
Masking Time

t

MASK

5

ms

BOOST# Pin Minimum 
Assertion Time

t

BOOST_MAT

1

s

BOOST# Pin Assertion 
Current

 I

BOOST

1.9

A

SMBus/I

2

C Timing

Input Capacitance

C

IN

5

pF

Clock Frequency

f

SMB

10

400

kHz

Spike Suppression

t

SP

50

ns

Bus Free Time Stop to Start

t

BUF

1.3

µs

Start Setup Time

t

SU:STA

0.6

µs

Start Hold Time

t

HD:STA

0.6

µs

Stop Setup Time

t

SU:STO

0.6

µs

Data Hold Time

t

HD:DAT

0

µs

When transmitting to the master

Data Hold Time

t

HD:DAT

0.3

µs

When receiving from the master

Data Setup Time

t

SU:DAT

0.6

µs

Clock Low Period

t

LOW

1.3

µs

Clock High Period

t

HIGH

0.6

µs

Clock/Data Fall Time

t

FALL

300

ns

Min. = 20+0.1C

LOAD

ns 

(

Note 1

)

Clock/Data Rise Time

t

RISE

300

ns

Min. = 20+0.1C

LOAD

ns

(

Note 1

)

Capacitive Load

C

LOAD

400

pF

Per bus line (

Note 1

)

Timeout

t

TIMEOUT

25

35

ms

Disabled by default (

Note 1

)

Idle Reset

t

IDLE_RESET

350

µs

Disabled by default (

Note 1

)

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, V

DD

 = 4.5V to 5.5V, V

S

 = 2.9V to 5.5V, 

V

PULLUP

 = 3V to 5.5V, T

A

 

= -40°C to 105°C. All typical values at V

DD

 = V

S

 = 5V, T

A

 = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1:

This parameter is characterized, not 100% tested.

2:

This parameter is ensured by design and not 100% tested.

3:

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above 
I

LIM

 (if I

BUS_R2MIN

 

 I

LIM

) or above I

BUS_R2MIN

 (if I

BUS_R2MIN

 > I

LIM

 and I

LIM

 

 1.6A).

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 2016 Microchip Technology Inc.

DS20005680A-page 5

UCS2113

Port Power Switch
Port Power Switch - DC Parameter
Overvoltage Lockout

V

S_OV

6

V

Note 2

V

S

 Low Threshold

V

S_UVLO

2.5

V

Note 2

V

S

 Low Hysteresis

V

S_UVLO_HYST

100

mV

Note 2

On Resistance

R

ON_PSW

40

m

4.75V < V

S

 < 5.25V

V

S

 Leakage Current

I

LEAK_VS

5

 µA

Sleep state into V

S

 pin on one 

channel (

Note 1

)

Back-Voltage Protection 
Threshold

V

BV_TH

150

mV

V

BUS

 > V

S

V

S

 > V

S_UVLO

 

Leakage Current

I

LKG_1

0

3

 

µA

V

DD

 < V

DD_TH

,

Leakage current from V

BUS

 pins 

to the V

DD

 and the V

S

 pins 

(

Note 1

)

I

LKG_2

0

2

 

µA

V

DD

 > V

DD_TH

,

Leakage current from V

BUS

 pins 

to the V

S

 pins, when the power 

switch is open

Selectable Current Limits

I

LIM1

530

mA

I

LIM

 Resistor = 0 or 47 k

(530 mA setting)

I

LIM2

960

mA

I

LIM

 Resistor = 10 k

 or 56 k

(960 mA setting)

I

LIM3

1070

mA

I

LIM

 Resistor = 12 k

 or 68 k

(1070 mA setting)

I

LIM4

1280

mA

I

LIM

 Resistor = 15 k

 or 82 k

(1280 mA setting) 

I

LIM5

1600

mA

I

LIM

 Resistor = 18 k

 or 100 k

(1600 mA setting) 

I

LIM6

2130

mA

I

LIM

 Resistor = 22 k

 or 120 k

(2130 mA setting) 

I

LIM7

2500

2670

2900

mA

I

LIM

 Resistor = 27 k

 or 150 k

(2670 mA setting)

I

LIM8

3000

3200

3400

mA

I

LIM

 Resistor = 33 k

 or V

DD

(3200 mA setting)

Pin Wake Time

t

PIN_WAKE

3

ms

SMBus Wake Time

t

SMB_WAKE

4

ms

Idle Sleep Time

t

IDLE_SLEEP

200

ms

First Thermal Shutdown 
Stage Threshold

T

TSD_LOW

120

°C

Die Temperature at which the 
power switch will open if it is in 
constant current mode

First Thermal Shutdown 
Stage Hysteresis

T

TSD_LOW_HYST

10

°C

Hysteresis for T

TSD_LOW

 func-

tionality. Temperature must drop 
by this value before any of the 
power switches can be closed. 

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, V

DD

 = 4.5V to 5.5V, V

S

 = 2.9V to 5.5V, 

V

PULLUP

 = 3V to 5.5V, T

A

 

= -40°C to 105°C. All typical values at V

DD

 = V

S

 = 5V, T

A

 = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1:

This parameter is characterized, not 100% tested.

2:

This parameter is ensured by design and not 100% tested.

3:

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above 
I

LIM

 (if I

BUS_R2MIN

 

 I

LIM

) or above I

BUS_R2MIN

 (if I

BUS_R2MIN

 > I

LIM

 and I

LIM

 

 1.6A).

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UCS2113

DS20005680A-page 6

 2016 Microchip Technology Inc.

Second Thermal Shutdown 
Stage Threshold

T

TSD_HIGH

135

°C

Die Temperature at which both 
power switches will open

Second Thermal Shutdown 
Stage Hysteresis

T

TSD_HIGH_HYST

25

°C

Hysteresis for T

TSD_HIGH 

functionality. Temperature must 
drop by this value before any of 
the power switches can be 
closed.

Auto-Recovery Test Current

I

TEST

190

mA

Portable device attached, 
V

BUS

= 0 V, Die temp < T

TSD

Auto-Recovery Test Voltage

V

TEST

750

mV

Portable device attached, 
V

BUS

 = 0 V before application, 

Die temp < T

TSD

Programmable, 250 - 1000 mV, 
default listed

Discharge Impedance

R

DISCHARGE

100

 

Port Power Switch - AC Parameters
Turn-On Delay

t

ON_PSW

0.9

ms

PWR_EN active toggle to
switch on time, V

BUS

 discharge 

not active

Turn-Off Time

t

OFF_PSW_INA

0.75

ms

PWR_EN inactive toggle to 
switch off time
C

BUS

 = 120 µF

Turn-Off Time

t

OFF_PSW_ERR

1

ms

Over-current Error, V

BUS

 Min 

Error, or Discharge Error to 
switch off 
C

BUS

 = 120 µF

Turn-Off Time

t

OFF_PSW_ERR1

100

ns

TSD or Back-drive Error to 
switch off
C

BUS

 = 120 µF

V

BUS

 Output Rise Time

t

R_BUS

1.1

ms

Measured from 10% to 90% of 
V

BUS

, C

LOAD

 = 220 µF

I

LIM

 = 1.0A

Soft Turn-On Rate

I

BUS

/

t

100

mA/µs

Temperature Update Time

t

DC_TEMP

200

ms

Short-Circuit Response Time

t

SHORT_LIM

1.5

µs

Time from detection of short to 
current limit applied.
No C

BUS

 applied

 

Short-Circuit Detection Time

t

SHORT

6

ms

Time from detection of short to 
port power switch disconnect 
and ALERT# pin assertion

Latched Mode Cycle Time

t

UL

7

ms

From PWR_EN edge transition 
from inactive to active to begin 
error recovery

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, V

DD

 = 4.5V to 5.5V, V

S

 = 2.9V to 5.5V, 

V

PULLUP

 = 3V to 5.5V, T

A

 

= -40°C to 105°C. All typical values at V

DD

 = V

S

 = 5V, T

A

 = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1:

This parameter is characterized, not 100% tested.

2:

This parameter is ensured by design and not 100% tested.

3:

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above 
I

LIM

 (if I

BUS_R2MIN

 

 I

LIM

) or above I

BUS_R2MIN

 (if I

BUS_R2MIN

 > I

LIM

 and I

LIM

 

 1.6A).

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 2016 Microchip Technology Inc.

DS20005680A-page 7

UCS2113

Auto-Recovery Mode Cycle 
Time

t

CYCLE

25

ms

Time delay before error 
condition check.
Programmable 15-50 ms, 
default listed 

Auto-Recovery Delay

t

TST

20

ms

Portable device attached, V

BUS 

must be > V

TEST

 after this time.

Programmable 10-25 ms, 
default listed

Discharge Time

t

DISCHARGE

200

ms

Amount of time discharge 
resistor applied.
Programmable 100-400 ms, 
default listed

 Port Power Switch Operation With Trip Mode Current Limiting 
Region 2 Current 
Keep-Out

I

BUS_R2MIN_1

0.1

A

Note 2

Minimum V

BUS

 

Allowed at Output

V

BUS_MIN_1

2.0

V

Note 2

 Port Power Switch Operation With Constant Current Limiting (Variable Slope)
Region 2 Current 
Keep-Out

I

BUS_R2MIN

2.13

A

Note 2

Minimum V

BUS

 

Allowed at Output

V

BUS_MIN

2.0

V

Note 2

 Current Measurement - DC
Current Measurement Range

I

BUS_M

0

3400

mA

Range (

Note 2

 and 

Note 3

)

Reported Current 
Measurement Resolution

I

BUS_M

13.3

mA

1 LSB

Current Measurement 
Accuracy

±2

%

200  mA  <  I

BUS

 < I

LIM

±2

LSB

I

BUS

 < 200 mA

 Current Measurement - AC

 

Sampling Rate

1.1

ms

Note 2

Conversion Time 
Both Channels

t

CONV

2.2

ms

All registers updated in digital
(

Note 2

)

Charge Rationing - DC
Accumulated Current 
Measurement Accuracy 

±4.5

%

Charge Rationing - AC

 

Current Measurement 
Update Time

t

PCYCLE

1

s

TABLE 1-2:

ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: Unless otherwise specified, V

DD

 = 4.5V to 5.5V, V

S

 = 2.9V to 5.5V, 

V

PULLUP

 = 3V to 5.5V, T

A

 

= -40°C to 105°C. All typical values at V

DD

 = V

S

 = 5V, T

A

 = 27°C.

Characteristic

Symbol

Min.

Typ.

Max.

Unit

Conditions

Note 1:

This parameter is characterized, not 100% tested.

2:

This parameter is ensured by design and not 100% tested.

3:

The current measurement full scale range maximum value is 3.4A. However, the UCS2113 cannot report values above 
I

LIM

 (if I

BUS_R2MIN

 

 I

LIM

) or above I

BUS_R2MIN

 (if I

BUS_R2MIN

 > I

LIM

 and I

LIM

 

 1.6A).

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UCS2113

DS20005680A-page 8

 2016 Microchip Technology Inc.

FIGURE 1-1:

SMBus Timing.

  

SMDATA

SMCLK

T

BUF

P

S

S - Start Condition

P - Stop Condition

P

S

T

HIGH

T

LOW

T

HD:STA

T

SU:STO

T

HD:STA

T

HD:DAT

T

SU:DAT

T

SU:STA

T

FALL

T

RISE

TABLE 1-3:

TEMPERATURE SPECIFICATIONS

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

Temperature Ranges
Operating Temperature Range

T

A

-40

+105

°C

Operating Junction Temperature

T

J

-40

+125

°C

Storage Temperature Range

T

A

-55

+150

°C

Thermal Package Resistances - see 

Table 1-1

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 2016 Microchip Technology Inc.

DS20005680A-page 9

UCS2113

1.1

ESD and Transient Performance

1.1.1

HUMAN BODY MODEL (HBM) 
PERFORMANCE

HBM testing verifies the ability to withstand ESD
strikes, like those that occur during handling and
manufacturing, and is done without power applied to
the IC. To pass the test, the device must have no
change in operation or performance due to the event. 

1.1.2

CHARGED DEVICE MODEL (CDM) 
PERFORMANCE

CDM testing verifies the ability to withstand ESD
strikes, like those that occur during handling and
assembly, with pick-and-place-style machinery and is
done without power applied to the IC. To pass the test,
the device must have no change in operation or
performance due to the event.

TABLE 1-4:

ESD RATINGS

ESD Specification

Rating or Value

Human Body Model (JEDEC JESD22-A114) - All pins 

8 kV

Charged Device Model (JEDEC JESD22-C101) - All pins

500V

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UCS2113

DS20005680A-page 10

 2016 Microchip Technology Inc.

NOTES:

Maker
Microchip Technology Inc.
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