R1232 系列

带同步整流器功能的PWM降压DC/DC转换器

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概述

The R1232 Series are low supply current CMOS-based PWM step-down DC/DC converters with synchronous rectifier. R1232 includes a soft start circuit, under-voltage lockout circuit (UVLO) and latch type protection circuit. By simply using an inductor, a capacitor, and (resistors) as external components, a high-efficiency step-down DC/DC converter can be easily configured. R1232 comes in two types: R1232Dxx1A/B with internally fixed output voltage and R1232D001C/D with adjustable output voltage with external resistors.

规格

	消费
输入电压范围	2.6 V to 5.5 V (6.5 V)
工作温度范围	-40°C to 85°C (125°C)
电源电流	Typ. 140 µA (1 MHz), 240 µA (2.25 MHz) (Non-switching)
待机电流	Typ. 0 µA (CE = "L")
输出电压范围	Internally Fixed Ver.: 0.9 V to 3.3 V Externally Adjustable Ver.: 0.8 V to VIN (Feedback Voltage: 0.8V)
输出电压精度	±2% (Ta = 25°C)
反馈电压精度	±16 mV
输出电流	1 A
振荡器频率	Typ. 1 MHz, 2.25 MHz
最大占空比	Min. 100%
封装	SON-8

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TSD	ILX	OCP	OVP	UVLO	OVLO	Reverse	Shutdown	Soft Start	SSCG	PGOOD	Auto Discharge	Anti-ringing	Sequencing	Max Duty	Ext. Phase	LED Adjust

功能说明

品质&封装

产品名称	对应	封装	标注	信赖性
R1232Dxx1x-TR-FE		SON-8	R1232D	R1232D-FE

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TSD	热关断电路
ILX	LX Current Limit Function
OCP	过流保护
OVP	过压保护
UVLO	欠压锁定功能
OVLO	Overvoltage Lockout Protection
Reverse	反向电流保护电路
Shutdown	关机功能
Soft Start	软启动功能
SSCG	Spread Spectrum Clock Generator Function
PGOOD	Power Good Output
Auto Discharge	自动放电功能
Anti-ringing	Anti-ringing Switch Function
Sequencing	Start-up Sequencing Control
Max Duty	最大占空比
Ext. Phase	外部可调相位补偿
LED Adjust	LED High-speed Dimming Control