Adjustable Frequency Buck or Buck-Boost Pre-Regulator with a Synchronous Buck, 3 Internal LDOs, Watchdog Timer, NPOR, and FF0/FF1

The A4408 is power management IC that uses a buck or buck-boost pre-regulator to efficiently convert automotive battery voltages into a tightly regulated intermediate voltage, complete with control, diagnostics, and protections. The output of the pre-regulator supplies a 5 V / 115 mAMAX tracking/pro \n• 2.8 to 36 VIN operating range, 40 VIN maximum\n• Adjustable PWM switching frequency: 250 kHz to 2.4 MHz\n• Adjustable synchronous buck regulator (1.25 VNOM)\n• 5V (V5P) internal tracking LDO regulator with foldback short-circuit and short-to-battery protections\n• Power-on reset (NPOR) with fixe;

PWM frequency can be synchronized to external clock

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PWM frequency can be synchronized to external clock

文件：3.08531 Mbytes Page：54 Pages

N-Channel Enhancement Mode Field Effect Transistor

General Description The AO4408 uses advanced trench technology to provide excellent RDS(ON), low gate charge and fast switching. This device makes an excellent high side switch for notebook CPU core DC-DC conversion. AO4408L(Green Product) is offered in a lead-free package. Features VDS (V)

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