A6984集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

A6984属于集成电路（IC）的稳压器-DC-DC开关稳压器。由意法半导体集团制造生产的A6984稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

Description

The A6984 is a step-down monolithic switching

regulator able to deliver up to 400 mA DC. The

output voltage adjustability ranges from 0.9 V. The

fixed 3.3 V VOUT requires no external resistor

divider. The “low consumption mode” (LCM) is

designed for applications active during car

parking, so it maximizes the efficiency at light load

with controlled output voltage ripple. The “low

noise mode” (LNM) makes the switching

frequency almost constant over the load current

range, serving low noise application

specifications such as car audio/sensors. The

PGOOD open collector output can implement

output voltage sequencing during the power-up

phase. The synchronous rectification, designed

for high efficiency at medium-heavy load, and the

high switching frequency capability make the size

of the application compact. Pulse-by-pulse

current sensing on the low-side power element

implements effective constant current protection.

The package lead finishing guarantees side

solderability, thus allowing visual inspection

during manufacturing.

Features

 AEC-Q100 qualified

 400 mA DC output current

 4.5 V to 36 V operating input voltage

 Synchronous rectification

 Low consumption mode or low noise mode

 100 µA IQ at light load (LCM VOUT = 3.3 V)

 13 µA IQ-SHTDWN

 Adjustable fSW (250 kHz - 600 kHz)

 Output voltage adjustable from 0.9 V

 No resistor divider required for 3.3 V VOUT

 VBIAS maximizes efficiency at light load

 350 mA valley current limit

 Constant on-time control scheme

 PGOOD open collector

 Thermal shutdown

Applications

 Car body and ADAS applications (LCM)

 Car audio and low noise applications (LNM)