RT9216B RichTek, RT9216B Datasheet - Page 2

• Manufacturer Part Number: RT9216B
• Description: VFM STEP UP DC/DC CONVERTER
• Manufacturer: RichTek

RT9261B
Typical Application Circuit
* L1 ranges from 27µH to 120µH
Pin Description
Function Block Diagram
www.richtek-ic.com.tw
2
-xxCX
--
--
1
2
3
Pin No.
-xxCB
4
2
5
1
3
GND
GND
VOUT
LX
CE
NC
LX
Pin Name
V
V
IN
IN
27 µ H
27 µ H
L1
L1
LXSW
Ground
Output Voltage
Pin for Switching
Chip Enable (Active High)
No Connection
OSC 190kHz
VLX Limiter
Buffer
VFM Control
Chip Enable
Preliminary
CE
LX
LX
CE
RT9261B
RT9261B
1N5819
1N5819
GND
GND
D1
D1
VOUT
VOUT
Error Amp.
+
-
Pin Function
+
+
-
-
Co
22 µ F
Co
22 µ F
Vref
V
V
OUT
OUT
DS9261B-03 September 2001
VOUT