Preliminary
RT9261B
Typical Application Circuit
D1
1N5819
L1
RT9261B
LX
VOUT
V
OUT
C
GND
OUT
V
IN
22uF
D1
1N5819
L1
RT9261B
LX
VOUT
V
OUT
OUT
C
V
EN
IN
GND
22uF
* L1 ranges from 27μH to 120μH
Functional Pin Description
Pin No.
Pin Name
Pin Function
-xxCX
-xxCB
1
2
4
2
5
1
3
GND
VOUT
LX
Ground
Output Voltage
3
Pin for Switching
Chip Enable (Active High)
No Connection
--
--
EN
NC
Function Block Diagram
V
Limiter
LX
LX
V
REF
LXSW
Buffer
VOUT
GND
-
+
OSC 190kHz
Error
Amplifier
Chip Enable
EN
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DS9261B-12 March 2007