RAA230221 datasheet(7/32 Pages) RENESAS

Part #	RAA230221

Description	16V Input, 3A, Dual Step-Down DC/DC Converter

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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RAA23022x RAA23023x

R18DS0017EJ0100 REV.1.00

Apr.21.2015

RAA23023x (2CH DCDC)

Pin No.

Symbol

I/O

Function

1

PGND1

I/O

CH1 Power Ground

2

LX1

O

CH1 Inductor connection

3

Boost1

I

CH1 Boot strap input

(Connect 0.1uF capacitor between LX1 and Boost1)

4

VIN1

I

CH1 Power supply

5

VOUT1

I

CH1 VOUT feedback

6

FB1

I

CH1 Feedback resistor connection

7

GND

I/O

Analog Ground

8

VREG

O

Internal power supply output

(Connect 1uF capacitor between VREG and AGND)

9

PGOOD

O

Power good output (open drain)

CH1 and CH2 stop

:L

CH1 or CH2 operation : HiZ

10

x_AutoPFM

I

Auto PFM mode ON/OFF

x_AutoPFM=”L” : Auto PFM mode (change automatically)

PFM mode at light load

PWM mode at heavy load

x_AutoPFM=“H” : PWM mode (fixed)

11

GND

I/O

Analog Ground

12

GND

I/O

Analog Ground

13

EN1

I

CH1 enable

EN1=“L” : CH1 Stop

EN1=”H” : CH1 Operation

14

EN2

I

CH2 enable

EN2=“L” : CH2 Stop

EN2=”H” : CH2 Operation

15

FB2

I

CH2 Feedback resistor connection

16

VOUT2

I

CH2 VOUT feedback

17

VIN2

I

CH2 Power supply

18

Boost2

I

CH2 Boot strap input

(Connect 0.1uF capacitor between LX2 and Boost2)

19

LX2

O

CH2 Inductor connection

20

PGND2

I/O

CH2 Power Ground

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