说明
UCS2114是一种双USB端口电源开关配置,可为每个VBUS端口提供3.0A连续电流(最大3.4A),具有精确过电流限制(OCL)、端口电源开关启用、自动恢复故障处理、欠压和过电压锁定、反向驱动保护和反向电压保护以及热保护。
UCS2114非常适合单机和具有SMBus/I2C通信的应用。对于使用SMBus的应用,UCS2114提供每个端口的电流监测和每个开关的八个可编程电流限制,范围从0.53A到3.0A的连续电流(最大3.4A)。还提供了3.8毫安时至246.3毫安时的每端口充电配给。在独立模式下,UCS2114为两个开关提供八个电流限制,范围从0.53A+0.53A到3A+3A总连续电流。
两个电源开关都包含独立的VBUS放电功能和用于BC1.2应用的恒流模式电流限制。
UCS2114有3x3 mm 20引脚QFN封装。
特性
- 2.9V to 5.5V source voltage range
- 3.0A continuous current per VBUS port with 18mO 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
- 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 VBUS Discharge Function
- -40°C to +105°C Operating Temperature Range
- 3x3 mm 20-pin QFN
- UL recognized and EN/IEC 60950-1 (CB) Certified
参数
类型 | 描述 |
Driver Type | USB Power Dist |
Type | Dual |
Vin Min (V) | 2.9 |
Vin Max (V) | 5.5 |
Max SW Current (A) | 0 |
Adj Current Limit | Yes |
Current Limit Adj# (Max) | 3.4A |
Current Limited | Yes |
RDS ON @5V (mO) | 18 |
Enable Logic | Active Low, Active High |
VEN (V) | 0 |
Rev Block Diode | Yes |
UVLO | Yes |
Thermal Shutdown | Yes |
Fault Flag | Yes |
Flag Transient Filter | Yes |
UL Approved | Yes |



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