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参数资料
| 型号： | SP7601EB |
| 厂商： | Exar Corporation |
| 文件页数： | 3/9页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP7601 |
| 标准包装： | 1 |
| 系列： | * |
PIN DESCRIPTION
PIN #
1
2
3
4
5
6
PIN
NAME
VIN
GATE
VDR
FB
GND
LX
5V
FAULT
DESCRIPTION
Input power supply for the controller. Place the input decoupling capacitor as
close as possible to this pin.
Connect to the gate terminal of the external P-channel MOSFET.
Power supply for the internal driver. This voltage is internally regulated to
about 5V below V IN . Place the decoupling capacitor between VDR and V IN as
close as possible to the IC.
Regulator feedback input. A feedback resistor is connected between this pin
and the LED cathode. A current setting resistor is connected between the
cathode and ground of the LED. This pin can be also used for dimming control
and/or Power Sequencing.
Ground pin.
This pin is used as a current limit input for the internal current limit comparator.
Connect to the drain pin of the external MOSFET through an optional resistor.
Internal threshold is pre-set to 350mV nominal and can be decreased by
changing the external resistor based on the following formula:
V TRSHLD = 350mV – 33 μ A * R
BLOCK DIAGRAM
VIN
VDR
Oscillator
Vin - 5V LDO
VIN
5V Internal LDO
I = k x VIN
PWM Latch
VREF
Reset Dominant
S
GATE
FB
+
+
R
-
-
Error Amplifier
PWM Comparator
VDR
FAULT
FAULT
ENBL
LX
UVLO
FAULT
Register
+
-
50ms delay
S
R
R
4-Bit counter
POR
Overcurrent
Comparator
VIN - 0.35V
33uA
GND
1V
Set Dominant
Sept25-07 Rev D
SP7601 29V High Voltage LED Driver
Page 3
? 2007 Exar Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7601EK1-L | 功能描述:LED照明驱动器 High Curr DC-to-DC Buck LED Drvr 1.2MHz RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| SP7601EK1-L/TR | 功能描述:LED照明驱动器 RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| SP7606 | 制造商:EXAR 制造商全称:EXAR 功能描述:Wide Input Voltage Boost Controller |
| SP7606ER-L | 制造商:EXAR 制造商全称:EXAR 功能描述:Wide Input Voltage Boost Controller |
| SP7606ER-L/TR | 制造商:EXAR 制造商全称:EXAR 功能描述:Wide Input Voltage Boost Controller |
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