RT8023GQW Datasheet, PDF (2/19 Pages) Richtek Technology Corporation – Converter Input Voltage Range : 2.6V to 5.5V, LDO Input Voltage Range : 2.4V to 5.5V

RT8023
Pin Configurations
(TOP VIEW)
24 23 22 21 20 19
PGOOD1 1
18 FB3
VDD1 2
17 PGOOD3
VIN1 3
VIN1 4
PGND
16 EN3
15 _EN2
VIN1 5
PGND 6
14 PGOOD2
25 _{13 FB2}
7 8 9 10 11 12
WQFN-24L 4x4
Typical Application Circuit
V_IN1
C1
10µF
R1
100
C2
0.1µF
C3
1µF
3, 4, 5 2
R2
100k
11 21
PGOOD1
EN1
EN2
EN3
V_OUT1
1.2V/1.5A
L1 2.2µH
R3 100k
1 _PGOOD1
24 _EN1
15 _EN2
16 _EN3
8, 9 _PHASE1
23 _FB1
RT8023
PGOOD2 ¹⁴
PGOOD3 ¹⁷
VOUT2 ¹²
FB2 ¹³
VOUT3 ²⁰
FB3 ¹⁸
C5
22uF
R4
200k
19 6,
Exposed Pad (25)
V_IN2
V_IN3
C4
1µF _{R5 R6}
100k 100k
R9 425k
PGOOD2
PGOOD3
R7 425k
V_OUT2
2.5V/0.7A
V_OUT3
2.5V/0.35A
R10
200k
C7 R8
C6
1µF _200k
1µF
Figure 1. 1.2V Output Step-Down Converter and Dual 2.5V Output Regulators
Note : Must to use ceramic X5R/X7R capacitors.
www.richtek.com
2
DS8023-03 March 2011