Overview
The TPS2553DBVR is a precision adjustable current-limited power-distribution switch produced by Texas Instruments. This device is designed for applications requiring precision current limiting, handling heavy capacitive loads, and mitigating short circuits. It provides up to 1.5 A of continuous load current and features adjustable current-limit thresholds between 75 mA and 1.7 A through an external resistor. The TPS2553DBVR is backwards compatible with the TPS2550 and TPS2551 and offers both constant-current and latch-off versions, making it versatile for various power distribution needs.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Maximum Load Current | Up to 1.5 A | Continuous load current capability |
| Current-Limit Accuracy | ±6% at 1.7 A (Typical) | Accuracy of the current-limit threshold |
| Adjustable Current Limit | 75 mA to 1700 mA (Typical) | Range of adjustable current-limit thresholds |
| Operating Voltage Range | 2.5 V to 6.5 V | Input voltage range for operation |
| RDS(on) | 85 mΩ (Typical) | On-resistance of the high-side MOSFET |
| Overcurrent Response Time | 2 µs (Typical) | Time to respond to overcurrent conditions |
| ESD Protection | 15 kV per IEC 61000-4-2 (With External Capacitance) | Electrostatic discharge protection level |
| Package | SOT-23-6 | Package type and pin count |
| Operating Temperature Range | -40°C to 150°C (TJ) | Junction temperature range for operation |
Key Features
- Up to 1.5-A Maximum Load Current
- ±6% Current-Limit Accuracy at 1.7 A (Typical)
- Meets USB Current-Limiting Requirements
- Backwards Compatible With TPS2550 and TPS2551
- Adjustable Current Limit: 75 mA to 1700 mA (Typical)
- Constant-Current (TPS255x) and Latch-Off (TPS255x-1) Versions
- Fast Overcurrent Response - 2 µs (Typical)
- 85-mΩ High-Side MOSFET (DBV Package)
- Reverse Input-Output Voltage Protection
- Operating Range: 2.5 V to 6.5 V
- Built-In Soft Start
- 15-kV ESD Protection per IEC 61000-4-2 (With External Capacitance)
- UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0
Applications
The TPS2553DBVR is suitable for a variety of applications where precision current limiting is essential, such as:
- USB power distribution and current limiting
- Power management in consumer electronics
- Industrial control systems requiring robust power distribution
- Automotive systems needing reliable and adjustable current limiting
- Medical devices requiring precise power management
Q & A
- What is the maximum load current of the TPS2553DBVR?
The TPS2553DBVR can handle up to 1.5 A of continuous load current.
- How accurate is the current-limiting feature of the TPS2553DBVR?
The current-limit accuracy is ±6% at 1.7 A (Typical).
- What is the operating voltage range of the TPS2553DBVR?
The device operates within a voltage range of 2.5 V to 6.5 V.
- Does the TPS2553DBVR have built-in ESD protection?
- What types of versions are available for the TPS2553DBVR?
The device is available in both constant-current (TPS255x) and latch-off (TPS255x-1) versions.
- How does the TPS2553DBVR protect against reverse input-output voltage?
An internal reverse-voltage comparator disables the power switch when the output voltage is driven higher than the input voltage.
- What is the response time for overcurrent conditions in the TPS2553DBVR?
The device responds to overcurrent conditions in 2 µs (Typical).
- Is the TPS2553DBVR backwards compatible with other models?
- What is the package type of the TPS2553DBVR?
The device is packaged in a SOT-23-6 package.
- Does the TPS2553DBVR have built-in soft start functionality?
