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產(chǎn)品名稱：RY1541AQ20 5CH PMU with HV&LV Buck, LDO, Boost, Super Capacitor Charger
型號(hào)： RY1541AQ20
產(chǎn)片介紹：The RY1541 is a 5-channel PMU that includes a 7 5-42V input, high efficiency synchronous HV BUCK converter, a fixed 3 3V output, high efficiency synchronous LV BUCK converter, a highly precise, low noise, positive voltage LDO regulator manufactured using CMOS processes, a low startup, high efficiency 18V BOOST converter and a supercapacitor charger

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General Description

The RY1541 is a 5-channel PMU that includes a 7.5-42V input, high efficiency synchronous HV BUCK converter, a fixed 3.3V output, high efficiency synchronous LV BUCK converter, a highly precise, low noise, positive voltage LDO regulator manufactured using CMOS processes, a low startup, high efficiency 18V BOOST converter and a supercapacitor charger. The HV buck converter withstand input voltage up to 50V and deliver a 3.3V output with 0.6A continuous current. The LV buck converter deliver a 1.5V output with 0.6A continuous current and 1.5MHz switch frequency. The LDO regulator delivers a 2.7V output with 500mA maximum current. The boost converter is capable of providing up to 350mA to 12V output from a single cell supercapacitor or a battery at 2.55V. A linear supercapacitor charger is also integrated with a very high accuracy CV voltage. The output voltage of boost can be adjusted by external resistor divider.

The RY1541 requires a minimal number of readily available, external components and is available in an QFN20- 3×3 package.

Features

• 5CH: 2CH Buck, LDO, Boost, Super Capacitor Charger

• CH1 Buck: Standoff 50V, V_IN7.5-42V, V_OUT=3.3V, 0.6A, 700kHz, PFM Mode for High

Efficiency in Light Load

• CH2 Buck: V_IN 2.5V-5.5V or 3.3V, V_OUT=0.6V-V_IN, 0.6A, 1.5MHz, PFM Mode for High

Efficiency in Light Load

• CH3 LDO: V_IN 2.5V-5.5V or 3.3V, V_OUT=1.0V-4.5V, 500mA High Speed Low Power LDO

• CH4 Boost: V_IN 0.4V-2.55V/V_OUT V_IN-18V, 1MHz, V_FB0.8V

• CH5 Super Capacitor Charger: ±2% accuracy for Charger CV Voltage, 50mA Constant

Charge Current

• Enable Pin to auto-switch Boost and Charger

• Over Current Protection

• Over Voltage Protection

• Short Protection with Foldback-Mode

• Thermal Shutdown

• Available in QFN20-3×3 Package

• -40°C to +85°C Temperature Range

Applications

• PLC Modules • Power Meters

Typical Application Circuit

上一篇：RY1302 2 Channel 5.5V 1.5A 1.5MHz DC-DC Step down PMU
下一篇：RY1228AD10 2CH PMU with Dual Buck

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