MB39C022N 查看數據表（PDF） - Cypress Semiconductor

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MB39C022N

Buck DC/DC Converter + Low Noise LDO

Cypress Semiconductor 

MB39C022G/J/L/N

Description

Buck DC/DC Converter

+ Low Noise LDO

The MB39C022 is a 2 channels power supply IC. It consists of one channel Buck DC/DC Converter and one channel LDO regulator.

The DC/DC converter has fast transient response with current mode control topology. Moreover, the integrated LDO provides an

auxiliary output supply for noise sensitive circuit.

Features

■ Power supply voltage range

: 2.5 V to 5.5 V

■ For Buck DC/DC included SW FET (CH1) : output 0.8 V to 4.5 V, 600 mA Max DC

■ For LDO (CH2)

: output 3.30 V (MB39C022G) 300 mA Max DC

: output 2.85 V (MB39C022J) 300 mA Max DC

: output 1.80 V (MB39C022L) 300 mA Max DC

: output 1.20 V (MB39C022N) 300 mA Max DC

■ Error amplifier threshold voltage

: 0.3 V ± (2.5 %) (CH1)

■ Fast line transient response with current mode topology (CH1)

■ PFM mode at light load current with VO1/VIN1 ≤ 80 % (IO1 ≤ 10 mA) (CH1)

■ Power-on-reset with 66 ms delay (CH1)

■ Built-in short circuit protect (CH2)

■ Built-in over current protect (CH1, CH2)

■ Built-in thermal protection function

■ Small size plastic SON-10 (3 mm × 3 mm) package

Applications

■ Portable Equipment

■ PND, GPS

■ PMP

■ Mobile TV, USB-dongle (CMMB, DVB-T, DMB-T)

■ Smart-phone

■ MP3

Cypress Semiconductor Corporation • 198 Champion Court

Document Number: 002-08460 Rev. *C

• San Jose, CA 95134-1709 • 408-943-2600

Revised June 19, 2017

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