Overview
The UC2638DWG4, produced by Texas Instruments, is an advanced pulse width modulator (PWM) integrated circuit designed for various PWM motor drive and amplifier applications. It is part of the UC2638 family, which is similar in architecture to the UC2637 but offers significant improvements in circuit speed and functionality. This IC is suitable for both uni-directional and bi-directional drive circuits, making it versatile for a range of applications.
The UC2638DWG4 features a programmable high-speed triangle oscillator, a 5X differential current sensing amplifier, a high slew rate error amplifier, and high-speed PWM comparators. These components enable the IC to operate at switching frequencies up to 500kHz, making it ideal for high-performance applications.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (DW) |
| Number of Pins | 20 |
| Supply Voltage Range | 10V to 36V |
| Operating Temperature Range | -40°C to 85°C |
| Oscillator Frequency | Up to 500kHz |
| Current Sense Amplifier Gain | 5X Differential |
| Output Drivers | Dual 500mA Totem Pole, Dual 60V, 50mA Open Collector |
| Undervoltage Lockout | Yes |
| Pulse-by-Pulse Peak Current Limiting | Yes |
| Remote Shutdown Port | Yes |
| Eco Plan | Green (RoHS & no Sb/Br) |
Key Features
- Programmable high-speed triangle oscillator
- 5X differential current sensing amplifier
- High slew rate error amplifier
- High-speed PWM comparators
- Dual 500mA totem pole output drivers and dual 60V, 50mA open collector drivers
- Programmable oscillator amplitude and PWM deadband
- Undervoltage lockout and pulse-by-pulse peak current limiting
- Remote shutdown port
- Precision externally available 5V reference
- Single or dual supply operation
Applications
The UC2638DWG4 is designed for a variety of PWM motor drive and amplifier applications, including:
- Uni-directional and bi-directional motor drives
- Full bridge configurations
- High-performance switching applications
- Industrial control systems
- Power supplies and DC-DC converters
Q & A
- What is the UC2638DWG4 used for?
The UC2638DWG4 is used for PWM motor drive and amplifier applications, including uni-directional and bi-directional drive circuits.
- What are the key features of the UC2638DWG4?
Key features include a programmable high-speed triangle oscillator, a 5X differential current sensing amplifier, high slew rate error amplifier, and high-speed PWM comparators.
- What is the operating temperature range of the UC2638DWG4?
The operating temperature range is -40°C to 85°C.
- What types of output drivers does the UC2638DWG4 have?
The IC has dual 500mA totem pole output drivers and dual 60V, 50mA open collector drivers.
- Does the UC2638DWG4 support single or dual supply operation?
Yes, it supports both single and dual supply operation.
- What is the maximum oscillator frequency of the UC2638DWG4?
The maximum oscillator frequency is up to 500kHz.
- Is the UC2638DWG4 RoHS compliant?
Yes, it is RoHS compliant and also free of Bromine (Br) and Antimony (Sb) based flame retardants.
- What packaging options are available for the UC2638DWG4?
It is available in SOIC (DW) and PDIP (N) packages.
- Does the UC2638DWG4 have undervoltage lockout and pulse-by-pulse peak current limiting?
Yes, it includes both undervoltage lockout and pulse-by-pulse peak current limiting features.
- Is the UC2638DWG4 recommended for new designs?
No, it is not recommended for new designs as it is marked as NRND (Not Recommended for New Designs) by Texas Instruments.
