Overview
The UC3524ADWTR is a high-performance, advanced regulating pulse width modulator (PWM) controller produced by Texas Instruments. This device is part of the UC3524 family and is designed to provide comprehensive control functions for regulating power supplies, inverters, and switching regulators. It is particularly suited for high-power-output applications and can be used in various configurations, including single-ended or push-pull operations.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Supply Voltage, VCC | 40 | V |
| Collector Output Current | 100 | mA |
| Reference Output Current | 50 | mA |
| Current Through CT Terminal | -5 to -0.03 | mA |
| Power Dissipation at TA = +25°C | 1000 | mW |
| Operating Ambient Temperature Range | 0 to +70 | °C |
| Reference Output Voltage | 4.8 to 5.2 | V |
| Line Regulation (VIN = 8 to 40V) | 10 to 30 | mV |
| Load Regulation (IL = 0 to 20mA) | 20 to 50 | mV |
| Ripple Rejection (f = 120Hz, TJ = 25°C) | 66 | dB |
| Maximum Frequency (CT = 0.001µF, RT = 2kΩ) | 300 | kHz |
Key Features
- Complete PWM power control circuitry
- Uncommitted outputs for single-ended or push-pull applications
- Low standby current: 8mA typical
- Interchangeable with SG1524, SG2524, and SG3524, respectively
- On-chip reference, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted output transistors, high-gain comparator, and current-limiting and shut-down circuitry
- Dual alternating outputs
- Fixed-frequency, pulse-width modulation techniques
Applications
- Regulating power supplies
- Inverters
- Switching regulators
- Transformer-coupled DC-to-DC converters
- Transformerless voltage doublers and polarity converters
- High-power-output applications
Q & A
- What is the UC3524ADWTR used for? The UC3524ADWTR is used as a PWM controller for regulating power supplies, inverters, and switching regulators.
- What is the operating temperature range of the UC3524ADWTR? The operating temperature range is from 0°C to +70°C.
- What is the maximum supply voltage for the UC3524ADWTR? The maximum supply voltage is 40V.
- What is the typical standby current of the UC3524ADWTR? The typical standby current is 8mA.
- Can the UC3524ADWTR be used in push-pull configurations? Yes, it can be used in both single-ended and push-pull applications.
- What are the key components included on the UC3524ADWTR chip? The chip includes an on-chip reference, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted output transistors, a high-gain comparator, and current-limiting and shut-down circuitry.
- Is the UC3524ADWTR interchangeable with other models? Yes, it is interchangeable with SG1524, SG2524, and SG3524, respectively.
- What is the maximum frequency of the oscillator in the UC3524ADWTR? The maximum frequency is 300 kHz with CT = 0.001µF and RT = 2kΩ.
- What is the ripple rejection of the UC3524ADWTR? The ripple rejection is 66 dB at f = 120Hz and TJ = 25°C.
- What are some common applications of the UC3524ADWTR? Common applications include regulating power supplies, inverters, switching regulators, and high-power-output applications.
