UCS2113
USB Dual-Port Power Switch and Current Monitor
Features
Description
• Dual-Port Power Switches:
The UCS2113 is a dual USB port power switch
configuration which can provide 3.0A continuous
current (3.4A maximum) per VBUS 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.
- 2.9V to 5.5V source voltage range
- 3.0A continuous current per VBUS 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
The UCS2113 is well suited for both stand-alone and
applications having SMBus/I2C communications.
- Undervoltage and overvoltage lockout
- Back-drive, back-voltage protection
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.
- Auto-recovery fault handling with low test
current
- BOOST# logic output to increase DC-DC
converter output under large load conditions
• SMBus 2.0/I2C Mode Features:
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).
- Eight programmable current limits assignable
to each power switch
- Other SMBus addresses available upon
request
Both power switches include an independent VBUS
discharge function and constant current mode current
limiting for BC1.2 applications.
- Block read and block write
• Self-Contained Current Monitoring (No External
Sense Resistor Required)
The UCS2113 is available in a 4x4 mm 20-pin QFN
package.
• Fully Programmable Per-Port Charge Rationing
and Behaviors
• Configurable Per-Port BC1.2 VBUS Discharge
Function
Package Type
UCS2113
4 x 4 QFN*
• Wide Operating Temperature Range:
- -40°C to +105°C
• UL Recognized and EN/IEC 60950-1 (CB)
Certified
• Passes Automotive AEC-Q100 Reliability Testing
20 19 18 17
16
PWR_EN1
GND
PWR_EN2
15
14
1
GND
2
3
4
EP
21
13
12
11
COMM_ILIM
VBUS2
BOOST#
VBUS1
VBUS2
VBUS1
5
6
7
8
9
10
* Includes Exposed Thermal Pad (EP); see Table 3-1.
2016-2021 Microchip Technology Inc. and its subsidiaries
DS20005680B-page 1