Overview
The UC3525ADWTR is a pulse width modulator (PWM) integrated circuit designed and manufactured by Texas Instruments. This component is part of the UC3525A series and is optimized for use in various switching power supply applications. It offers improved performance and reduces the need for external components, making it a versatile choice for designers. The UC3525ADWTR operates within a temperature range of 0°C to 70°C and is packaged in a 16-pin SOIC (DW) package.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package Type | SOIC-16 (DW) |
| Operating Temperature Range | 0°C to 70°C |
| Supply Voltage (+VIN) | 8V to 35V |
| Collector Supply Voltage (VC) | +40V |
| Logic Inputs | –0.3V to +5.5V |
| Analog Inputs | –0.3V to VIN |
| Output Current, Source or Sink | 500mA |
| Reference Output Current | 50mA |
| Oscillator Frequency Range | 100Hz to 500kHz |
| Output Drivers | Dual Source and Sink |
Key Features
- On-chip 5.1-V reference trimmed to 1%
- Input common-mode range of the error amplifier includes the reference voltage, eliminating external resistors
- Sync input to the oscillator for slaving multiple units or synchronizing to an external system clock
- Adjustable dead-time control using a single resistor between CT and discharge terminals
- Built-in soft-start circuitry with only an external timing capacitor required
- Shutdown terminal for instantaneous turn off and soft-start recycle
- Input undervoltage lockout with hysteresis
- Latching PWM to prevent multiple pulses
- Dual source and sink output drivers
Applications
The UC3525ADWTR is designed for use in various types of switching power supplies, including step-up, step-down, and other power conversion applications. Its features make it suitable for use in industrial power supplies, consumer electronics, and other devices requiring efficient and reliable power management.
Q & A
- What is the operating temperature range of the UC3525ADWTR?
The UC3525ADWTR operates within a temperature range of 0°C to 70°C. - What is the package type of the UC3525ADWTR?
The UC3525ADWTR is packaged in a 16-pin SOIC (DW) package. - What is the supply voltage range for the UC3525ADWTR?
The supply voltage range is from 8V to 35V. - Does the UC3525ADWTR have built-in soft-start circuitry?
Yes, the UC3525ADWTR features built-in soft-start circuitry that requires only an external timing capacitor. - Can the oscillator frequency be synchronized with an external clock?
Yes, the UC3525ADWTR has a sync input to the oscillator that allows synchronization with an external system clock. - What is the maximum output current of the UC3525ADWTR?
The maximum output current is 500mA. - Does the UC3525ADWTR have undervoltage lockout protection?
Yes, it includes input undervoltage lockout with hysteresis. - How is dead-time adjusted in the UC3525ADWTR?
Dead-time can be adjusted using a single resistor between the CT and discharge terminals. - What type of output drivers does the UC3525ADWTR have?
The UC3525ADWTR has dual source and sink output drivers. - Is the UC3525ADWTR suitable for industrial power supplies?
Yes, it is suitable for use in industrial power supplies and other power conversion applications.
