Overview
The SG3524P013TR, produced by STMicroelectronics, is a voltage-mode pulse-width modulation (PWM) controller integrated on a single monolithic chip. This device is designed to provide all the necessary functions for constructing regulating power supplies, inverters, or switching regulators. It is particularly suited for high power-output applications, including switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformerless voltage doublers, and polarity converter applications. The SG3524P013TR employs fixed-frequency, pulse-width modulation techniques and features dual alternating outputs, allowing for either single-ended or push-pull configurations.
Key Specifications
| Parameter | Min. | Max. | Unit | |
|---|---|---|---|---|
| Supply Voltage (VIN) | - | - | 40 | V |
| Collector Output Current (IC) | - | - | 100 | mA |
| Reference Output Current (IR) | - | - | 50 | mA |
| Total Power Dissipation at Tamb = 70°C (Ptot) | - | - | 1000 | mW |
| Operating Ambient Temperature Range (Top) | 0 | - | 70 | °C |
| Storage Temperature Range (Tstg) | -65 | - | 150 | °C |
| Reference Voltage (VREF) | 4.6 | 5 | 5.4 | V |
| Maximum Frequency (fMAX) | - | - | 300 | KHz |
| Total Standby Current (Iq) | - | 8 | 10 | mA |
Key Features
- COMPLETE PWM POWER CONTROL CIRCUITRY: Includes all necessary functions for PWM control on a single chip.
- LOW STANDBY CURRENT: Typical standby current of 8mA.
- UNCOMMITTED OUTPUTS: Suitable for single-ended or push-pull applications.
- PRECISE REFERENCE VOLTAGE: 1% maximum temperature variation of reference voltage.
- HIGH OPERATING FREQUENCY: Operation up to 300KHz.
- ON-CHIP REFERENCE AND ERROR AMPLIFIER: Includes an on-chip reference, error amplifier, programmable oscillator, pulse-steering flip flop, and current-limiting and shut-down circuitry.
Applications
- Switching Regulators: Suitable for switching regulators of either polarity.
- Transformer-Coupled DC-to-DC Converters: Can be used in transformer-coupled DC-to-DC converter applications.
- Transformerless Voltage Doublers: Applicable in transformerless voltage doubler configurations.
- Polarity Converter Applications: Used in polarity converter applications employing fixed-frequency, pulse-width modulation techniques.
- High Power-Output Applications: Can serve as the control element for high power-output applications.
Q & A
- What is the SG3524P013TR used for?
The SG3524P013TR is used for constructing regulating power supplies, inverters, or switching regulators, and is particularly suited for high power-output applications.
- What is the maximum operating frequency of the SG3524P013TR?
The SG3524P013TR can operate up to a maximum frequency of 300KHz.
- What is the typical standby current of the SG3524P013TR?
The typical standby current of the SG3524P013TR is 8mA.
- What types of outputs does the SG3524P013TR support?
The SG3524P013TR supports both single-ended and push-pull output configurations.
- What is the temperature variation of the reference voltage?
The reference voltage has a maximum temperature variation of 1%.
- What are the key components included in the SG3524P013TR?
The device 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.
- How is the oscillator frequency programmed in the SG3524P013TR?
The oscillator frequency is programmed using one timing resistor (RT) and one timing capacitor (CT) according to the formula: f = 1.18 / (RT * CT).
- What is the maximum supply voltage for the SG3524P013TR?
The maximum supply voltage for the SG3524P013TR is 40V.
- Can the SG3524P013TR be used in synchronous operation with other regulators?
Yes, the SG3524P013TR can be operated synchronously with other regulators by tying the oscillator output terminals together and using a single timing capacitor and resistor.
- What is the storage temperature range for the SG3524P013TR?
The storage temperature range for the SG3524P013TR is from -65°C to 150°C.
