Overview
The SG2525AP, produced by STMicroelectronics, is a pulse width modulator (PWM) integrated circuit designed to enhance performance and reduce the external parts count in switching power supply designs. This device features an on-chip +5.1 V reference voltage trimmed to ±1%, an error amplifier with a common-mode range that includes the reference voltage, and a sync input to the oscillator for synchronization with external system clocks. The SG2525AP also includes built-in soft-start circuitry, pulse-by-pulse shutdown, and an undervoltage lockout with hysteresis for jitter-free operation.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vi) | 8 to 35 | V |
| Collector Supply Voltage (VC) | 4.5 to 35 | V |
| Oscillator Frequency Range | 100 Hz to 500 KHz | |
| Reference Output Voltage (VREF) | 5.05 to 5.15 | V |
| Output Current (Source/Sink) | Up to 200 mA | mA |
| Total Power Dissipation at Tamb = 70 °C | 1000 | mW |
| Junction Temperature Range | -55 to 150 | °C |
| Operating Ambient Temperature | -25 to 85 | °C |
| Package | SO-16 | |
| RoHS Compliance Grade | Ecopack2 |
Key Features
- Dual source/sink output drivers capable of sourcing or sinking in excess of 200 mA.
- Latching PWM to prevent multiple pulses.
- Pulse-by-pulse shutdown.
- Internal soft-start circuitry with only an external timing capacitor required.
- 8 to 35 V operation range.
- 100 Hz to 500 KHz oscillator range.
- 5.1 V reference voltage trimmed to ±1%.
- Adjustable deadtime control.
- Input undervoltage lockout with hysteresis.
- Separate oscillator sync terminal.
Applications
The SG2525AP is suitable for designing all types of switching power supplies, including but not limited to:
- DC-DC converters.
- Power supplies for electronic devices.
- Motor control systems.
- High-frequency switching applications.
Q & A
- What is the operating voltage range of the SG2525AP?
The SG2525AP operates within a voltage range of 8 to 35 V.
- What is the oscillator frequency range of the SG2525AP?
The oscillator frequency range is from 100 Hz to 500 KHz.
- What is the reference output voltage of the SG2525AP?
The reference output voltage is 5.1 V, trimmed to ±1%.
- Does the SG2525AP have built-in soft-start circuitry?
- What is the maximum output current of the SG2525AP?
The output stages can source or sink in excess of 200 mA.
- What is the purpose of the undervoltage lockout in the SG2525AP?
The undervoltage lockout keeps the outputs off and the soft-start capacitor discharged for sub-normal input voltages, ensuring jitter-free operation.
- Can the SG2525AP be synchronized with an external system clock?
- What is the package type of the SG2525AP?
The SG2525AP is available in an SO-16 package.
- Is the SG2525AP RoHS compliant?
- What is the junction temperature range of the SG2525AP?
The junction temperature range is -55 to 150 °C.
