RP503 系列 | 日清纺微电子

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概述

The RP503 Series are low supply current CMOS-based PWM/VFM step-down DC/DC converters with synchronous rectifier. RP503 is PWM/VFM auto switching control in which mode automatically switches to high-efficiency VFM mode in low output current. The efficiency in low output current (VFM mode) improved compared with existing products. RP503 includes a soft start circuit, an under-voltage lockout circuit (UVLO), and a latch protection circuit. By simply using an inductor and capacitors as external components, a high-efficiency step-down DC/DC converter can be easily configured.

规格

	消费
输入电压范围	2.5 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. 20 µA (VFM, no load)
待机电流	Typ. 0 µA
输出电压范围	0.8 V to 2.5 V (0.1 V step)
输出电压精度	±1.5% (VOUT ≥ 1.2 V, Ta = 25°C) ±18 mV (VOUT < 1.2 V)
输出电压温度系数	±100 ppm/°C
输出电流	600 mA
驱动器导通电阻	Pch: Typ. 0.34 Ω, Nch: 0.43 Ω (VIN = 3.6 V)
振荡器频率	Typ. 2 MHz
最大占空比	Min. 100%
封装	DFN1616-6, SOT-23-5

保护回路/功能

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

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

功能说明

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

用以下条件检索类似商品

分类：DC / DC开关稳压器

	拓扑结构	Buck
	输入电压 min (V)	2.5
	输入电压 max (V)	5.5
	输出电压 min (V)	0.8
	输出电压 max (V)	2.5
	输出电流 (mA)	600
	消费电流 (µA)	20

技术资料

Typical Application
RP503x25xA Efficiency vs. Output Current
相关信息
在线设计工具

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Min Input Voltage

[V]

Max Input Voltage

[V]

Output Voltage

[V]

Max Output Current

[A]

Buck

Boost

Buck-Boost

Inverting

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