Overview
The TL594CDTBG is a precision switchmode pulse width modulation (PWM) control circuit designed primarily for switchmode power supply control. This device, produced by onsemi, integrates all the necessary functions for constructing a PWM control circuit on a single chip. It offers systems engineers the flexibility to tailor the power-supply control circuitry to specific applications. The TL594 includes features such as on-chip error amplifiers, an adjustable oscillator, dead-time control, and a 5-V reference with 1.5% accuracy, making it a versatile and reliable component for various power supply configurations.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Power Supply Voltage (VCC) | 7.0 to 40 | V |
| Collector Output Voltage (VC1, VC2) | -30 to 40 | V |
| Collector Output Current (Each Transistor) | 500 | mA |
| Amplifier Input Voltage Range | -0.3 to VCC - 2 | V |
| Operating Ambient Temperature Range | -40 to 85 | °C |
| Switching Frequency (Typical) | up to 300 | kHz |
| Package Type | 16-SOIC, PDIP, TSSOP | |
| Output Configuration | Push-Pull or Single-Ended | |
| Output Current Capability | 500 mA Source or Sink |
Key Features
- Complete PWM Power-Control Circuitry
- On-Chip Oscillator with Master or Slave Operation
- On-Chip Error Amplifiers
- On-Chip 5.0 V Reference, 1.5% Accuracy
- Adjustable Deadtime Control
- Uncommitted Output Transistors Rated to 500 mA Source or Sink
- Output Control for Push-Pull or Single-Ended Operation
- Undervoltage Lockout
- Pb-Free Packages Available
Applications
- Off-line power supply
- Buck converter
- Vehicle Power Adapter (VPA)
- LED Lighting
Q & A
- What is the primary function of the TL594CDTBG? The TL594CDTBG is a precision switchmode pulse width modulation (PWM) control circuit designed primarily for switchmode power supply control.
- What is the operating temperature range of the TL594CDTBG? The operating ambient temperature range is -40°C to 85°C.
- What are the output configurations available for the TL594CDTBG? The device supports both push-pull and single-ended output operations.
- What is the maximum collector output current for each transistor? Each transistor is rated to 500 mA.
- Does the TL594CDTBG have an on-chip oscillator? Yes, it has an on-chip adjustable oscillator that can operate in master or slave mode.
- What is the accuracy of the on-chip 5-V reference? The on-chip 5-V reference has an accuracy of 1.5%.
- Is the TL594CDTBG Pb-Free and RoHS compliant? Yes, Pb-Free packages are available and the device is RoHS compliant.
- What are the typical applications of the TL594CDTBG? Typical applications include off-line power supplies, buck converters, vehicle power adapters, and LED lighting.
- Can the TL594CDTBG be synchronized with other circuits? Yes, the circuit architecture allows for easy synchronization with other circuits.
- What is the maximum switching frequency of the TL594CDTBG? The device can operate up to a switching frequency of 300 kHz.
