1 Features

? AEC-Q100 Qualified for Automotive Applications:

– Device Temperature Grade 1: –40°C to

+125°C, TA

? Functional Safety Quality-Managed

– Documentation Available to Aid Functional

Safety System Design

– Two Inputs for External Voltage Monitoring

– Two Programmable Power-Good Signals

– Dedicated Reference Voltage for Diagnostics

– Window Watchdog with Reset Output

– Output Short-Circuit and Overload Protection

– Overtemperature Warning and Protection

– Overvoltage Protection (OVP) and

Undervoltage Lockout (UVLO)

? Two High-Efficiency Step-Down DC/DC

converters:

– Maximum Output Current 3.5 A

– 2-MHz, 3-MHz, or 4-MHz Switching Frequency

– Auto PWM/PFM and Forced-PWM Operations

– Output Voltage = 0.7 V to 3.36 V

? 5-V Boost Converter

– Maximum Output Current 600 mA

? External Clock Input to Synchronize Switching

? Spread-Spectrum Modulation

? Programmable Start-up and Shutdown Delays and

Sequencing with Enable Signal

? Configurable General Purpose Outputs (GPOs)

? I2C-Compatible Interface Supporting Standard

(100 kHz), Fast (400 kHz), Fast+ (1 MHz), and

High-Speed (3.4 MHz) Modes

? Interrupt Function with Programmable Masking

2 Applications

? Automotive Radar

? Automotive Camera

? Automotive Sensor Fusion

? Industrial Radar

? Building Automation

3 Description

The LP87702-Q1 helps meet the power management

requirements of the latest platforms, particularly in

automotive radar and camera and industrial radar

applications. The device contains two step-down

DC/DC converters, and a 5-V boost converter

to support safety critical applications. The device

integrates two voltage monitoring inputs for external

power supplies and a window watchdog.

The automatic PWM/PFM (AUTO mode) operation

gives high efficiency over a wide output current range

for buck converters. The LP87702-Q1 uses remote

voltage sensing to compensate IR drop between the

converter output and the point-of-load, thus improving

the accuracy of the output voltage.

LP87702屬于集成電路（IC） > 電源管理 - 專用。美國德州儀器公司制造生產(chǎn)的LP87702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(cè)、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。