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车规 ET5904
General Description
The ET5904 is CMOS-based low dropout, low power linear regulator. It’s a 4 channels integrated LDOs with I2C control. 2 channels offering 800mA with NMOS pass transistor, 2 channels offering 300mA with PMOS pass transistor. ET5904 include 400kHz high speed I2C interface, the function setting is flexible such as power sequence, output voltage, output discharge, current limit per channel. The chip enable control support EN pin control and I2C control.
Features
DVIN input voltage range from 0.6V to 2.0V
AVIN input voltage range from 3.0 V to 5.5V
LDO1/2 output voltage range from 0.6V to 1.8V with step 6mV.
LDO1/2 output current are 800mA Min.
LDO1/2 ultra-low dropout are typical 105mV at 800mA, 1.2V output.
LDO3/4 output voltage range from 1.2V to 4.3V with step 12.5mV
LDO3/4 output current range are 300mA Min.
LDO3/4 ultra-low dropout are typical 90mV at 300mA, 2.8V output.
LDO3/4 built-in inrush current limit at Typ. 250 mA for appr.700 us period after start-up
Very low input quiescent current of 85µA typical
Built-in over-current protection and thermal shutdown circuit
Built-in auto-discharging circuit (optional)
Built-in under voltage lock-out
Applications
Constant-Voltage Power Supply for Battery-powered Device
Constant-Voltage Power Supply for Smartphones, Tablets
Constant-Voltage Power Supply for Cameras, DVRs, STB and Camcorders
Pin Configuration
Block Diagram
Application Circuits
