L9177屬于集成電路（IC）的電源管理-專用。由意法半導(dǎo)體集團制造生產(chǎn)的L9177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)、負載突降保護、觸覺驅(qū)動器、熱電制冷器控制等。

特性 Features

? Supply voltage from 6 V to 18 V

– Basic functionality guaranteed down to 3.9 V

? 5 V regulator up to 300 mA with thermal

shutdown protection in current limitation

condition

? 5 V tracking regulator up to 40 mA and short to

battery protection

? 5 V standby regulator up to 2.5 mA

? 2 channels injectors drivers

– Parallel and serial driving

– Output internally clamped to 60 V

– Minimum overcurrent at 2.8 A

– Ron 0.6 Ω worst case (at Tj = 150 °C)

? 3 relay drivers

– 2 with parallel and serial driving, 1 with

serial driving

– Output internally clamped to 45 V

– Minimum guaranteed output current 1 A

– Ron 1.5 Ω worst case (at Tj = 150 °C)

? Tachometer driver

– Parallel and serial driving

– Minimum guaranteed output current 25 mA

– Ron 5 Ω worst case (at Tj = 150 °C)

– Serial driving

– Output internally clamped to 45 V

– Minimum guaranteed output current 1 A

(2 A during in-rush)

– Ron 1.5 Ω worst case (at Tj = 150 °C)

? Stepper motor driver

– Parallel driving

– Minimum guaranteed output current

500 mA - full step

– Ron 2.6 Ω worst case on the diagonal

(at Tj = 150 °C)

? O2 sensor heater

– Parallel and serial driving

– Output internally clamped to 45 V

– Minimum guaranteed output current 3 A

– Ron 0.5 Ω worst case (at Tj = 150 °C)

? Protected high side driver

– 100 mA min. current limitation threshold

? Full diagnosis by SPI

– Injector driver: OL, STG, OC

– Relay and Lamp drivers: OL, STG, OC

– O2 sensor heater: OL, STG, OC

– Tachometer: OL, STG, OC

– Stepper motor driver: OL, STG, STB, OC

– general diagnostic: over-temperature

? Protection for STB, STG (for stepper motor

drivers and tracking regulator)

? Self configuring variable reluctance sensor

interface

? K-line transceiver

? Microcontroller reset logic

? Packaged in PowerSO46