概览
简介
ISL78083DEMO1Z 用于演示 ISL78083 多输出 DC/DC 稳压器的性能,该稳压器由一个初级主高压同步降压稳压器、两个次级低压同步降压稳压器和一个次级低压差线性稳压器(LDO)组成。
ISL78083 汽车摄像头电源管理 IC 适用于高精度电源应用,只需要少数的外部组件和极小的底板空间。ISL78083 提供多达四个完全保护的调节输出,并提供三个电源正常指示灯和一个复位/故障指示灯。
特性
-
V
IN
工作范围 4.0V 至 42V
- 启动范围:4.5V 至 42V
- 固定开关频率:2.2MHz可选伪随机扩频
-
三个带内部补偿的同步降压稳压器和一个 LDO
- 降压稳压器 1 输出范围:3.3V 至 5.05V
- 降压稳压器 2 输出范围:1.0V 至 3.3V
- 降压稳压器 3 输出范围:1.0V 至 3.3V
- LDO4 输出范围:2.8V 至 3.4V
- 输出 UV/OV 阈值,OTP: ±4%、±6%、±8%、±12%
- OTP 电源升/降顺序及延迟
- 可在 Buck2、Buck3 和 LDO4 上选择输出放电
- 关闭时 V IN 的输入电流 <1µA 典型值
-
保护特性
- 输入电压 UVLO
- 输出 OV/UV
- 降压稳压器的正负电流限制
- 内部和输出 LDO 上的过流保护
- 故障保护控制器
- OTP 寄存器的 CRC
- OTP 打嗝或闭锁故障响应
应用
应用
- 后视及全景高清汽车摄像头
- 驾驶员监控摄像头
- 高清行车记录仪
设计和开发
软件与工具
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