| 产品特性：SGM | 品牌：SG-MICRO | 型号：SGM3756 |
| 类型：放大器 | 用途：电动玩具 | 封装：SOP |
| 系列：SGM8 | 批号：2018+ | 产品说明：OP |
| 应用领域：3C数码 |
圣邦微代理商供应锂电保护ICSGM41000 和过压保护IC sgm3756
The SGM3756 is an asynchronous Boost WLED driver with high efficiency, low EMI and high output voltage. The Boost converter integrates a 40V, 1.*** internal FET which operates at 1.2MHz switching frequency. Its strong driving ability can drive single or multiple parallel LED strings, which can be used as LED driver for smart phone and tablet backlight.
The default LED current can be programmed by the external current-sense resistor RSET. By varying the duty cycle of the PWM signal applied to the CTRL pin, the internal reference voltage is adjusted, which ultimately adjusts the LED sink current. With full PWM duty cycle, the internal reference voltage VREF is 200mV (TYP). The SGM3756 is essentially a driver that adopts analog dimming control, and it will not produce audible noise on the output capacitor. The SGM3756 integrates ringing cancellation, and it can effectively reduce EMI noise in DCM mode. The SGM3756 provides excellent line regulation and load regulation, as well as excellent load transient response. The SGM3756 also features various protection functions such as open LED protection, OCP protection and thermal shutdown protection.
The SGM3756 is available in a Green TDFN-2×2-6L package. It operates over an ambient temperature range of -40℃ to +85℃.
PIN CONFIGURATIONS
FEATURES
Input Voltage Range: 2.7V to 5.5V
Integrated 40V/2.7*** Switch
Up to 90% Efficiency
Switching Frequency: 1.2MHz
Feedback Voltage: 200mV
PWM Dimming Control
38V LED Open Protection for 10 LEDs
Automatic Soft-Start for Reducing Inrush Current
1:500 Stable Luminance Dimming
Low EMI by Conducting Ringing Cancelling
Improved PSRR for Waveless Lighting
Protection Features
Over-Voltage Protection
Under-Voltage Lockout Protection
Thermal Shutdown
-40℃ to +85℃ Operating Temperature Range
Available in a Green TSOT-23-5 Package
APPLICATIONS
Smart Phone and Tablet Backlighting
Handheld Computers, PDAs, GPS Receivers
Backlight for Media Form Factor Displays
