RAA230221 Ver la hoja de datos (PDF) - Renesas Electronics

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componentes Descripción

Fabricante

RAA230221

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

Renesas Electronics 

RAA23022x RAA23023x

RAA23023x (2CH DCDC)

Pin No.

1

2

3

Symbol

PGND1

LX1

Boost1

4

VIN1

5

VOUT1

6

FB1

7

GND

8

VREG

9

PGOOD

10

x_AutoPFM

11

GND

12

GND

13

EN1

14

EN2

15

FB2

16

VOUT2

17

VIN2

18

Boost2

19

LX2

20

PGND2

I/O

Function

I/O CH1 Power Ground

O CH1 Inductor connection

I

CH1 Boot strap input

(Connect 0.1uF capacitor between LX1 and Boost1)

I

CH1 Power supply

I

CH1 VOUT feedback

I

CH1 Feedback resistor connection

I/O Analog Ground

Internal power supply output

O

(Connect 1uF capacitor between VREG and AGND)

Power good output (open drain)

O

CH1 and CH2 stop :L

CH1 or CH2 operation : HiZ

Auto PFM mode ON/OFF

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

I

PFM mode at light load

PWM mode at heavy load

x_AutoPFM=“H” : PWM mode (fixed)

I/O Analog Ground

I/O Analog Ground

CH1 enable

I

EN1=“L” : CH1 Stop

EN1=”H” : CH1 Operation

CH2 enable

I

EN2=“L” : CH2 Stop

EN2=”H” : CH2 Operation

I

CH2 Feedback resistor connection

I

CH2 VOUT feedback

I

CH2 Power supply

I

CH2 Boot strap input

(Connect 0.1uF capacitor between LX2 and Boost2)

O CH2 Inductor connection

I/O CH2 Power Ground

R18DS0017EJ0100 REV.1.00

Apr.21.2015

Page 7 of 30

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