參數(shù)資料
型號: RT9264
廠商: Electronic Theatre Controls, Inc.
英文描述: HIGH FREQUENCY HIGH EFFICIENCY STEP UP DC/DC CONVERTER
中文描述: 高頻高效率升壓型DC / DC變換器
文件頁數(shù): 3/8頁
文件大?。?/td> 170K
代理商: RT9264
Preliminary
RT9264
DS9264-00 December 2001
www.richtek-ic.com.tw
3
Pin Description
Pin No. Pin Name
Pin Function
1
GND
Ground
2
EXT
Output pin for driving external NMOS or NPN
When driving an NPN, a resistor should be added for limiting base current.
3
LFB
Feedback pin of the built-in LDO (Internal Vref = 0.86V)
4
LDOO
Voltage output pin of the built-in LDO
5
FB
Feedback input pin
Internal reference voltage for the error amplifier is 1.25V.
6
VDD
Input positive power pin of RT9264
7
LX
Pin for switching
8
CE
Chip enable
RT9264 gets into shutdown mode when CE pin set to low.
Function Block Diagram
EXT
LDOO
LFB
Loop Control Circuit
Over Temp.
Detector
LX
GND
Shut Down
1.25V
1.25V
RT9264
VDD
FB
CE
VDD
R2
Q3
NMOS
VDD
Q2
PMOS
R1
Q1
NMOS
_
+
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