RT9266 RICHTEK [Richtek Technology Corporation], RT9266 Datasheet - Page 4

• Manufacturer Part Number: RT9266
• Description: Tiny Package, High Efficiency, Step-up DC/DC Converter
• Manufacturer: RICHTEK [Richtek Technology Corporation]

RT9266
Test Circuit
Functional Pin Description
Function Block Diagram
www.richtek.com
4
RT9266CX5
--
1
5
4
2
3
Pin No.
V
IN
RT9266CE
I (V
A
VDD
IN
1
2
3
4
5
6
EN
FB
)
EN
EXT
100uF
C3
Pin Name
EN
EXT
GND
LX
VDD
FB
RT9266
VDD
GND
1.25V
A
VDD
I (V
Q2
N MOS
R2
DD
FB
LX
10uH
)
Chip Enable (Active High)
Output Pin for Driving External NMOS
Ground
Pin for Switching
Input Positive Power Pin of RT9266
Feedback Input Pin
Internal Reference Voltage for the Error Amplifier is 1.25V.
L1
Pin Function
-
+
Over Temp.
Detector
Loop Control Circuit
1uF
C2
RT9266
1N5819
R1
1.6M/3M
R2
980k/1M
D1
Shut Down
102
C4
Q1
N MOS
R1
100uF
C1
EXT
LX
106
C5
GND
DS9266-12 May 2007
V
3.3V/5V
OUT