SG3525A:PWM Controller
The SG3525A PWM Controller offers improved performance and lower external parts count when implemented for controlling all types of switching power supplies. The on-chip +5.1 V reference is trimmed to +/-1% and the error amplifier has an input common-mode voltage range that includes the reference voltage, thus eliminating the need for external divider resistors. A sync input to the oscillator enables multiple units to be slaved or a single unit to be synchronized to an external system clock. A wide range of deadtime can be programmed by a single resistor connected between the CT and Discharge pins. This device also features built-in soft-start circuitry, requiring only an external timing capacitor. A shutdown pin controls both the soft-start circuitry and the output stages, providing instantaneous turn off through the PWM latch with pulsed shutdown, as well as soft-start recycle with longer shutdown commands. The under voltage lockout inhibits the outputs and the changing of the soft-start capacitor when VCC is below nominal. The output stages are totem-pole design capable of sinking and sourcing in excess of 200 mA. The output stage of the SG3525A features NOR logic resulting in a low output for an off-state.
特性
- 8.0 V to 35 V Operation
- 5.1 V +/- 1.0% Trimmed Reference
- 100 Hz to 400 kHz Oscillator Range
- Separate Oscillator Sync Pin
- Adjustable Deadtime Control
- Input Undervoltage Lockout
- Latching PWM to Prevent Multiple Pulses
- Pulse-by-Pulse Shutdown
- Dual Source/Sink Outputs: +/- 400 mA Peak
- Pb-Free Packages are Available*
应用
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封装图 PACKAGE DIMENSIONS
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订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| SG3525ADWG |
Last Shipments |
| AEC Qualified |
| PPAP Capable |
| Pb-free |
| Halide free |
|
PWM Controller |
SOIC-16W |
751G-03 |
3 |
Tube |
47 |
|
| SG3525ADWR2G |
Active |
| AEC Qualified |
| PPAP Capable |
| Pb-free |
| Halide free |
|
PWM Controller |
SOIC-16W |
751G-03 |
3 |
Tape and Reel |
1000 |
$0.8 |
| SG3525ANG |
Active |
|
PWM Controller |
PDIP-16 |
648-08 |
|
Tube |
500 |
$0.6667 |
数据资料DataSheet下载
