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RT9300APE bảng dữ liệu(PDF) 2 Page - Richtek Technology Corporation

tên linh kiện RT9300APE
Giải thích chi tiết về linh kiện  Tiny Package, Low Dropout Current Source
PDF  7 Pages
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nhà sản xuất  RICHTEK [Richtek Technology Corporation]
Trang chủ  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT9300APE bảng dữ liệu(HTML) 2 Page - Richtek Technology Corporation

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RT9300A/B
Preliminary
2
DS9300A/B-02 March 2007
www.richtek.com
Function Block Diagram
Functional Pin Description
Pin
Name
Function
1
EN
Chip Enable (Active High).
2
GND
Ground
3
LED4
LED4 Cathode Connection. Current flowing into LED4 is Constant. (20mA/15 mA)
LED4 is High Impedance when EN is Low.
4
LED3
LED3 Cathode Connection. Current flowing into LED3 is Constant. (20mA/15 mA)
LED3 is High Impedance when EN is Low.
5
LED2
LED2 Cathode Connection. Current flowing into LED2 is Constant. (20mA/15 mA)
LED2 is High Impedance when EN is Low.
6
LED1
LED1 Cathode Connection. Current flowing into LED1 is Constant. (20mA/15 mA)
LED1 is High Impedance when EN is Low.
+
-
Current Source
UVLO
Bandgap
OTP
LED1
LED2
LED3
LED4
EN
I
REF
V
REF
Figure 2. Application circuit for keypad.
LED4
LED3
LED2
LED1
GND
EN
PWM
V
IN
6
5
43
1
2
RT9300A/B
C
0.1uF
Keypad
LED



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