rt9226b ETC-unknow, rt9226b Datasheet - Page 4

• Manufacturer Part Number: rt9226b
• Description: Synchronous Pwm Step-down Dc/dc Converter Controller
• Manufacturer: ETC-unknow

RT9226B
Typical Application Circuit
C4, C5: Each 1000µF 6.3WV DC, Sanyo MV-GX or Equivalent.
L1: Core: Micrometals T50-52; Winding: 5 turns of 18 AWG.
L2: Core: Micrometals T60-52; Winding: 14 turns of 17 AWG.
Q1, Q2: PHB83N03LT, PHB95N03LT
www.richtek-ic.com.tw
4
12V
10Ω
R1
Low Shutdown
0.1µF
Power Good
C3
15V
D1
1µF
C1
14 VCC
12
5
3
6
7
8
EN
GND
SS
PGNDL
PGNDH
PGOOD
RT9226B
BOOT
10K 1%
R5
11
OCSET
UGATE
PHASE
LGATE
VSEN
Preliminary
FB
10
2
9
13
4
1
1000pF
R4
910 1%
2.4k
R2
C2
Q2
Q1
R3
510 1%
C6
1µF
D2
1N5817
7µH
L2
+
-
C4
1000µF×2
+
-
1µH
C5
1000µF×6
L1
DS9226B-01 May 2001
V
V
1.25V/10A
IN
OUT
5V