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参数资料
| 型号： | LC41059FN |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR CONVERTER, QCC28 |
| 封装： | QFN-28 |
| 文件页数： | 2/4页 |
| 文件大小： | 59K |
| 代理商： | LC41059FN |
2
///// Block Diagrams /////
///// Pin Assignment /////
SD:
A low level input will disable the device, and turn off LEDs. A high level
input (=VIN) will enable the device, and turn on LEDs. Pulse input on
the SD pin makes LEDs flickering in synchronization with the pulse, so
the brightness can be controlled by the duty cycle.
BRGT: Analog brightness control input. It accepts an input voltage range from
0V to 1.25V. Rset resistance and BRGT input voltage determine the
LED current.
RSET: Connect a resistor. Rset resistance and BRGT input voltage determine the LED current.
VREF: 1.2V of internally generated VREF is available. VREF can be used for a BRGT input voltage.
(See “Operation” chapter for more details)
Pin name
Function
VIN
Battery Voltage In
C1A
Flying Capacitor (1) +
C1B
Flying Capacitor (1) -
C2A
Flying Capacitor (2) +
C2B
Flying Capacitor (2) -
SD
Shutdown Signal Input
PWM Input
BRGT
Analog Brightness Control
RSET
External Resistor
GND
Ground
VREF
VREF Output
LED_IN1 White LED Input (1)
LED_IN2 White LED Input (2)
LED_IN3 White LED Input (3)
LED_IN4 White LED Input (4)
VOUT
Charge Pump Output
TENTATIVE
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