L9950屬于集成電路（IC）的電源管理-專用。由意法半導(dǎo)體集團(tuán)制造生產(chǎn)的L9950電源管理 - 專用專用型電源管理集成電路 (PMIC) 用于電源的控制或操作，適合特定或小范圍的目標(biāo)應(yīng)用，例如汽車氣囊管理、電容器組平衡、AC 公共電力監(jiān)控、存儲(chǔ)器總線端接、接地故障檢測、能量收集、小型引擎管理、處理器或芯片集專用電壓調(diào)節(jié)、負(fù)載突降保護(hù)、觸覺驅(qū)動(dòng)器、熱電制冷器控制等。

1 FEATURES

■ One full bridge for 6A load (ron = 150m? )

■ Two half bridges for 3A load (ron = 300m? )

■ Two half bridges for 1.5A load (ron = 800m? )

■ One highside driver for 6A load (ron = 100m? )

■ Four highside drivers for 1.5A load (ron = 800 m? )

■ Programmable Softstart function to drive loads

with higher inrush currents (i.e. current

>6A,>3A,>1.5A)

■ Very low current consumption in standby mode

IS < 6μA, typ. Tj ≤ 85 °C)

■ All outputs short circuit protected

■ Current monitor output for 300m? ,150m? and

100m highside drivers

■ All outputs over temperature protected

■ Open load diagnostic for all outputs

■ Overload diagnostic for all outputs

■ Seperated half bridges for door lock motor

■ PWM control of all outputs

■ Charge Pump output for reverse polarity

protection

2 APPLICATIONS

Door Actuator Driver with bridges for door lock and

safe lock, mirror axis control, mirror fold and highside

driver for mirror defroster and four 5W-light bulbs.

3 DESCRIPTION

The L9950 is a microcontroller driven multifunctional door actuator driver for automotive applications.Up to five DC motors and five grounded

resistive loads can be driven with six half bridges

and five highside drivers. The integrated standard

serial peripheral interface (SPI) controls all operation modes (forward, reverse, brake and high impedance).

All diagnostic informations are available via SPI