L6910G集成电路（IC）的PMIC-稳压器-DCDC开关式控制器规格书PDF中文资料

L6910G属于集成电路（IC）的PMIC-稳压器-DCDC开关式控制器。由意法半导体集团制造生产的L6910GDC-DC 开关控制器PMIC（电源管理集成电路）DC 到 DC 开关式控制器是用于高效率电路的稳压 IC，其配置为生成高于（突升或步升）或低于（突降或步降）输入电源的输出电源电压。其他拓扑结构可能包括：降压-升压、反激、正激、Cuk、SEPIC、全桥、半桥和推挽式。这些器件不同于需要最小电压并“烧尽”多余电压的线性稳压器。

DESCRIPTION

The device is a pwm controller for high performance dc-dc conversion from 3.3V, 5V and 12V buses.

The output voltage is adjustable down to 0.9V; higher voltages can be obtained with an external voltage divider.

High peak current gate drivers provide for fast switching to the external power section, and the output current can be in excess of 20A.

The device assures protections against load overcurrent and overvoltage.

An internal crowbar is also provided turning on the low side mosfet as long as the over-voltage is detected. In case of over-current detection, the soft start capacitor is discharged and the system works in HICCUP mode.

FEATURES

■ OPERATING SUPPLY VOLTAGE FROM 5V TO 12V BUSES

■ UP TO 1.3A GATE CURRENT CAPABILITY

■ ADJUSTABLE OUTPUT VOLTAGE

■ N-INVERTING E/A INPUT AVAILABLE

■ 0.9V ±1.5 VOLTAGE REFERENCE

■ VOLTAGE MODE PWM CONTROL

■ VERY FAST LOAD TRANSIENT RESPONSE

■ 0 TO 100 DUTY CYCLE

■ POWER GOOD OUTPUT

■ OVERVOLTAGE PROTECTION

■ HICCUP OVERCURRENT PROTECTION

■ 200kHz INTERNAL OSCILLATOR

■ OSCILLATOR EXTERNALLY ADJUSTABLE FROM 50kHz TO 1MHz

■ SOFT START AND INHIBIT

■ PACKAGE: SO-16

APPLICATIONS

■ SUPPLY FOR MEMORIES AND TERMINATIONS

■ COMPUTER ADD-ON CARDS

■ LOW VOLTAGE DISTRIBUTED DC-DC

■ MAG-AMP REPLACEMENT