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Updated at 17/06/2025 10:30:15(UTC+8)
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Description
- The SG1525A/1527A series of pulse width modulator integrated circuits are designed to offer improved performance and lower external parts count when used to implement all types of switching power supplies. The on-chip +5.1 volt reference is trimmed to ±1% initial accuracy and the input common-mode range of the error amplifier includes the reference voltage, eliminating external potentiometers and divider resistors. A Sync input to the oscillator allows multiple units to be slaved together, or a single unit to be synchronized to an external system clock. A single resistor between the CT pin and the Discharge pin provides a wide range of deadtime adjustment. These devices also feature built-in soft-start circuitry with only a timing capacitor required externally. A Shutdown pin controls both the soft-start circuitry and the output stages, providing instantaneous turn-off with soft-start recycle for slow turn-on. These functions are also controlled by an undervoltage lockout which keeps the outputs off and the soft-start capacitor discharged for input voltages less than that required for normal operation. Another unique feature of these PWM circuits is a latch following the comparator. Once a PWM pulse has been terminated for any reason, the outputs will remain off for the duration of the period. The latch is reset with each clock pulse. The output stages are totem-pole designs capable of sourcing or sinking in excess of 200mA. The SG1525A output stage features NOR logic, giving a LOW output for an OFF state. The SG1527A utilizes OR logic which results in a HIGH output level when OFF.
- **Key Features**:
- • 8V to 35V operation
- • 5.1V reference trimmed to ±1%
- • 100Hz to 500KHz oscillator range
- • Separate oscillator sync terminal
- • Adjustable deadtime control
- • Internal soft-start
- • Input undervoltage lockout
- • Latching P.W.M. to prevent multiple pulses
- • Dual source/sink output drivers
SG1525AJ Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Mounting Style | Through Hole |
| Number of Pins | 16 Pin |
| Case/Package | CDIP-16 |
| Supply Voltage (DC) | 35.0V (max) |
| Number of Outputs | 2 Output |
| Quiescent Current | 14.0 mA |
| Rise Time | 100 ns |
| Switching Frequency | 100Hz ~ 350kHz |
| Duty Cycle | 49 % |
| Maximum Duty Cycle | 49 % |
| Fall Time | 50 ns |
| Operating Temperature (Max) | 125 ℃ |
| Operating Temperature (Min) | -55 ℃ |
| Show | |
| Operating Temperature | -55℃ ~ 125℃ (TA) |
| Product Lifecycle Status | Active |
| Packaging | Tube |
| RoHS | Non-Compliant |
| Lead-Free Status | Lead Free |
| ECCN Code | EAR99 |
Order guide
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- Delivery date: usually 2 to 7 working days.
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- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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