SGM3759数据手册SGMICRO中文资料规格书
SGM3759规格书详情
描述 Description
The SGM3759 is a high efficiency white LED driver with a 1.2MHz boost converter. With the fixed switching frequency and an internal 40V/3A switch FET, the SGM3759 is designed for powering single or parallel LED strings for various size panel backlighting and ideal for smart phone image capture using display device as a flash mode light source, as it is capable of driving up to 200mA current at 30V for 320ms when the strobe signal is active.
The FB feedback voltage is regulated at 200mV typically. The backlight mode default LED current is programmed by an external RSET resistor. During the operation, the LED current can be controlled by applying a PWM signal to the CTRL pin. The feedback voltage depends on the PWM signal duty cycle. For PWM dimming control, there are no audible noises on the output capacitor.
The SGM3759 integrates LED open protection. It prevents the device from damaging due to the over-voltage during LED open conditions.
When the device is in operation and the STROBE pin is pulled up, the SGM3759 will enter flash mode within 100μs. The feedback voltage is regulated to 5× of thebacklight mode voltage that is determined by the PWM signal duty cycle. When the STROBE pin is pulled down or the strobe signal remains high for longer than the 320ms timer, the SGM3759 will enter backlight mode within 100μs.
The SGM3759 is available in a Green TSOT-23-6 package. It operates over an ambient temperature range of -40℃ to +85℃.
特性 Features
• Input Voltage Range: 2.7V to 5.5V
• Integrated 40V/3A Switch
• Up to 200mA Output Current at 30V
• Accumulated 320ms Flash Timer Control
• Switching Frequency: 1.2MHz
• PWM Dimming Control
• PWM Dimming Frequency: 20kHz to 100kHz
• Strobe Interface for Image Capture Mode
• Up to 87% Efficiency for 7S2P LEDs
• Up to 92% Efficiency for 3S20P LEDs
• Dimming Stable in 1:500 Range
• Feedback Voltage
Backlight Mode: 200mV
Flash Mode: 1000mV
• Flash Mode Under-Voltage Lockout
• Automatic Soft-Start for Reducing Inrush Current
• PFM Mode at Light Load
• Protection Features
38V Over-Voltage Protection
LED Open or Short Protection
Thermal Shutdown
• -40℃ to +85℃ Operating Temperature Range
• Available in a Green TSOT-23-6 Package
应用 Application
PDAs, Handheld Computers
Backlight for Media Form Factor LCD Displays with 1-Cell Battery Input
技术参数
- 制造商编号
:SGM3759
- 生产厂家
:SGMICRO
- Channels per Package
:1
- VIN Max (V)
:5.5
- VIN Min (V)
:2.7
- LEDs per String
:7
- Shutdown Current (μA)
:<1
- Switching Frequency (MHz)
:1.2
- LED Connection Type
:Common Anode
- Quiescent Current (mA)
:0.2
- Dimming Method
:PWM
- Package
:TSOT-23-6
- Features
:1:500 High Performance
- Status
:量产
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
SGMICRO |
21+ |
DFN |
10000 |
原装现货假一罚十 |
询价 | ||
SGM |
18+ |
DFN |
1046 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
询价 | ||
SGMRO/圣邦微 |
24+ |
NA/ |
2759 |
优势代理渠道,原装正品,可全系列订货开增值税票 |
询价 | ||
SGMICRO |
2024+ |
DFN |
500000 |
诚信服务,绝对原装原盘 |
询价 | ||
SGMICRO/圣邦微 |
23+ |
TSOT-23-6 |
52000 |
圣邦微电子全线供应,可提供样品 |
询价 | ||
SGMICRO |
21+ |
DFN |
2759 |
只做原装,绝对现货,原厂代理商渠道,欢迎电话微信查 |
询价 | ||
SGMICRO(圣邦微) |
24+ |
SOT236 |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
MURATA-杰翔达专营 |
24+ |
DFN |
8000 |
原装,正品 |
询价 | ||
MURATA-杰翔达专营 |
22+23+ |
DFN |
8000 |
新到现货,只做原装进口 |
询价 | ||
SGMICRO(圣邦微) |
23+ |
NA |
20094 |
正纳10年以上分销经验原装进口正品做服务做口碑有支持 |
询价 |