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RAA211651

更新时间： 2024-11-30 14:57:35
品牌 Logo 应用领域
瑞萨 - RENESAS /
页数 文件大小 规格书
35页 3132K
描述
60V 5A Low Quiescent Current Integrated Switching Regulator

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RAA211651 数据手册

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Datasheet  
RAA211651  
60V 5A Low Quiescent Current Integrated Switching Regulator  
The RAA211651 is an integrated 60V, 5A  
Features  
▪ 4.5V to 60V input supply range  
synchronous buck regulator with the Constant  
On-Time (COT) control scheme. It supports a wide  
range of input voltage from 4.5V to 60V and  
adjustable output voltage (0.8V to maximum duty  
▪ 0.8V reference voltage with 1% accuracy  
▪ Adjustable output voltage (0.8V to Dmax*V )  
IN  
cycle * V ). It also features a very low quiescent  
▪ Modulator: Constant On-Time (COT)  
▪ Low quiescent current  
IN  
current, typically 19µA at 24V input. The modulation  
scheme used allows for high efficiency at all output  
load levels, especially at light-load conditions.  
▪ Excellent line and load regulation  
▪ Selectable internal or external control loop  
The RAA211651 is based on the COT modulator,  
where the on-time is determined by the input voltage  
level and the resistor connected to the SET pin. The  
switching frequency varies with the load. At light load,  
switching frequency drops reducing the switching  
losses. Also, with internal compensation, the  
regulator works in Diode Emulation mode reducing  
the losses at light-load conditions.  
compensation  
▪ Variable load dependent switching frequency  
▪ Output Power-Good (PG) indicator  
▪ Programmable and optional fixed 2ms soft-start  
feature  
▪ Programmable startup and shutdown delay  
▪ Integrated LDO with bypass capability allowing for  
high-efficiency operation  
To limit inrush current during startup the RAA211651  
has 2ms fixed internal soft-start time. It can also be  
programed by an external capacitor. The RAA211651  
also provides programmable startup delay time for  
sequencing purposes.  
▪ Full protection: High-Side Overcurrent (HSOC) and  
low-side current protections in both directions,  
output Overvoltage Protection (OVP) and Output  
Undervoltage Protection (OUVP), input  
Undervoltage Lockout (UVLO), and  
Over-Temperature Protection (OTP)  
The RAA211651 provides comprehensive protections  
including undervoltage lockout, overcurrent (positive  
and negative), overvoltage, and over-temperature  
protections.  
▪ Optional 3.3V default V  
using internal feedback  
OUT  
▪ 28 Ld 4mmx5mm QFN package  
The device is available in 28 Ld 4mmx5mm QFN  
package.  
Applications  
▪ Industrial power supplies  
▪ 48V industrial and computing PoL  
▪ Battery powered applications  
▪ ATM, vending, and gaming machines  
▪ Robotics  
▪ Programmable logic controllers  
▪ After-market automotive  
R16DS0132EU0200 Rev.2.00  
Dec 1, 2023  
Page 1  
© 2021-2023 Renesas Electronics  
1234567...35

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