R5220 系列
400mA带开关功能的PWM降压DC/DC转换器
-
概述
The R5220 Series are CMOS-based PWM step-down DC/DC converters with synchronous rectifier. R5220 also has the function of switching to the LDO regulator. By switching with the MODE pin, the device can be used as an LDO regulator (Output Current 50mA) in the smaller output current range, while it can be used as a DC/DC converter (Output Current 400mA*) under high load conditions. (The polarity of the MODE pin is selectable.) The DC/DC converter contains an under-voltage lockout circuit (UVLO), a soft start circuit, and a latch type protection circuit. By simply using an inductor and a capacitor, a high-efficiency DC/DC converter can be easily configured.
*) This is an approximate value, because output current depending on conditions and external parts.
-
规格
消费 输入电压范围 2.8 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. 350 µA (DC/DC operation)
Typ. 5.0 µA (LDO operation)待机电流 Typ. 0.1 µA 输出电压范围 1.0 V to 3.3 V (0.1 V step) 输出电压精度 ±2% (VOUT ≥ 1.5 V, Ta = 25°C)
±30 mV (VOUT < 1.5 V)输出电流 400 mA (DC/DC operation)
50 mA (LDO operation)驱动器导通电阻 Pch: 0.5 Ω, Nch: 0.5 Ω (VIN = 3.6 V) 振荡器频率 Typ. 1.2 MHz 封装 DFN(PL)2514-6 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 -
技术资料
-
Typical Application
-
R5220K181A Efficiency vs. Output Current
-
相关信息
-
-
品质&封装
产品名称 对应 封装 标注 信赖性 R5220Kxxxx-TR DFN(PL)2514-6 R5220K R5220K - 有关产品的详细信息,请参见数据表。
- 封装文件或数据表包括封装尺寸,卷带规格,卷带盘尺寸,功耗和建议的焊盘图案。
-
买入/样品
-
线上购买
-
买入/样品依赖/资料获取
授权代理商
请与您当地的代理商联系以进行任何与销售有关的咨询,例如价格,库存,交货等。
-
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 |