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林小姐 
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GMT致新 G2841AQE1U 21+
General Description
The G2841/G2841A is a 1.2MHz/600kHz fixed-frequency boost regulator designed for high integration, which integrates a power switch, an I/O isolation switch.
When a short-circuit condition is detected, the isolation switch opens up to disconnect the output from the input.
As a result, the IC protects itself and the input source from any pin, except VIN, from being shorted to ground. The isolation switch also disconnects the output from input during shutdown to prevent any leakage current. Other provisions for protection include 0.5A/1.3A peak-to-peak overcurrent protection, programmable soft start (SS), over voltage protection (OVP), thermal shutdown, and under voltage lockout (UVLO).
The IC operates from input supplies including single Li-ion battery, triple NiMH, and regulated 5V, such as USB output.
The output can be boosted up to 27V. The G2841/G2841A can provide the supply voltages of OLED, TFT-LCE bias, 12V and 24V power rails. The output of G2841/G2841A can also be configured as a current source to power up to seven WLEDs in flash light applications.
Features
■ 2.5V to 6V Input Voltage Range
■ Up to 27V Output Voltage
■ 0.5A Integrated Switch G2841 1.3A Integrated Switch G2841A
■ 12V/400mA and 24V/170mA From 5V Input (Typical)
■ Integrated Power Diode
■ 1.2MHz/600KHz Selectable Fixed Switching Frequency
■ Input-to-Output Isolation
■ Short-Circuit Protection
■ Programmable Soft Start
■ Overvoltage Protection
■ Up to 87% Efficiency
■ DFN3X3-10 Package
Applications
■ 3.3V to 12V, 5V to 12V, and 24V Boost Converter
■ White LED Backlight for Media Form Factor Display
■ OLED Power Supply
■ xDSL Applications
■ TFT-LCD Bias Supply
■ White LED Flash Light
询价
