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Texas Instruments TPS2553DBVT-1
- Part No.:
- TPS2553DBVT-1
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
TPS2553DBVT-1.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:1 SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:430
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Product details
Overview
TPS2553DBVT-1 from Texas Instruments is a latch-off, precision adjustable current-limited power-distribution switch featuring an N-channel MOSFET with 85 mΩ typical rDS(on), ±6% current-limit accuracy at 1.7 A, and fast 2 µs overcurrent response. It operates from 2.5 V to 6.5 V input and delivers up to 1.5 A continuous load current for USB port protection in self-powered hubs.
For engineers reviewing the TPS2553DBVT-1 datasheet, TPS2553DBVT-1 pinout, TPS2553DBVT-1 application, or TPS2553DBVT-1 equivalent, key selection considerations include its active-high EN logic, FAULT open-drain assertion during overcurrent/reverse-voltage/overtemperature events, programmable current limit (75 mA–1700 mA via RILIM), reverse-voltage comparator trip at 135 mV (typ), and thermal shutdown at 135 °C with 10 °C hysteresis.
Technical Context
The TPS2553DBVT-1 integrates an internal charge pump to drive the N-channel high-side MOSFET gate above the source, enabling full enhancement down to 2.5 V input. Its constant-current limiting is replaced by latching-off behavior upon overcurrent detection - the device remains disabled until EN is toggled or power is cycled.
Reverse-voltage protection activates when VOUT exceeds VIN by ≥135 mV (typ) for ≥4 ms, turning off the MOSFET and asserting FAULT. The FAULT output includes 7.5-ms deglitching for overcurrent and 4-ms deglitching for reverse-voltage, while overtemperature faults trigger immediate assertion without deglitching.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Limit Range | 75 mA to 1700 mA (typical), set externally via RILIM (15 kΩ–232 kΩ) |
| Current-Limit Accuracy | ±6% at 1.7 A (typical); ensures precise USB-compliant current limiting under varying temperature and voltage |
| rDS(on) | 85 mΩ (typ, DBV package, 25°C); minimizes conduction loss and thermal rise at 1.5 A load |
| Overcurrent Response Time | 2 µs (typical); enables rapid fault containment before downstream damage occurs |
| Reverse-Voltage Trip Point | 135 mV (typical); prevents backfeed into upstream supplies when downstream ports are powered first |
| UVLO Threshold | 2.45 V (rising), 2.35 V (falling) with 25 mV hysteresis; avoids erratic switching near minimum USB supply voltage |
| FAULT Output Type | Active-low open-drain; supports wired-OR fault bus implementation across multiple ports |
Pinout & Package
SOT-23-6 (DBV) package with exposed PowerPAD™ thermally connected to GND; 2.90 mm × 1.60 mm body size, 0.95 mm max height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Power input | Accepts 2.5 V–6.5 V supply; requires ≥0.1 µF ceramic decoupling capacitor to GND |
| OUT | Switched power output | Drives downstream USB load; internally connected to N-channel MOSFET drain |
| GND | Ground reference | Common return path; must be externally connected to PowerPAD™ for thermal and electrical integrity |
| FAULT | Open-drain fault indicator | Asserts low during overcurrent, overtemperature, or reverse-voltage; requires external pull-up resistor |
| ILIM | Current-limit programming node | Connects to GND via RILIM; sets ILIMIT per IOUT = 1000 × (1.215 V / RILIM) |
| EN | Enable control input | Active-high logic (TPS2553 family); high ≥1.1 V enables switch, low ≤0.66 V disables it |
Key Features
| Feature | Design Value |
|---|---|
| Latch-off overcurrent response | Disables output permanently on fault until EN toggle or power cycle - eliminates thermal cycling in sustained shorts |
| Reverse-voltage protection | Turns off MOSFET when VOUT > VIN + 135 mV (typ) for ≥4 ms, preventing backfeed into host supply |
| Built-in soft-start | Controls output rise/fall times (tr ≈ 1.5 ms, tf ≈ 0.5 ms @ 6.5 V) to suppress inrush into large capacitive loads |
| UL and IEC60950-1 certification | UL File No. E169910 and NEMKO IEC60950-1-am1 ed2.0 certified - supports safety-compliant USB hub designs |
| ESD robustness | ±15 kV air-gap, ±8 kV contact discharge (IEC 61000-4-2); protects against handling and system-level ESD events |
Applications
| USB Hub Port Protection | Self-Powered USB Peripheral |
|---|---|
|
Use Scenario: Protecting individual downstream ports in a 4-port self-powered USB 2.0 hub against short circuits and hot-plug inrush. IC Role / Device Role / Timing Role: High-side power switch with latch-off fault response and programmable current limit per port. Use Value: Prevents single-port fault from disabling entire hub; enables per-port current limiting compliant with USB 2.0 spec (max 500 mA). |
Use Scenario: Powering a USB-connected VoIP phone with auxiliary 5 V rail derived from upstream host or adapter. IC Role / Device Role / Timing Role: Isolated power switch with reverse-voltage blocking and FAULT signaling to MCU supervisor. Use Value: Blocks backfeed if phone's internal 5 V regulator powers VOUT before VIN, protecting host port from damage. |
| Digital TV USB Accessory Port | Set-Top Box Front-Panel USB |
|
Use Scenario: Securing front-panel USB-A port on a smart TV for flash drives or wireless dongles subject to user-insertion faults. IC Role / Device Role / Timing Role: Current-limited distribution switch with thermal shutdown and FAULT reporting to system controller. Use Value: Limits fault energy during accidental shorting of USB data lines; FAULT signal triggers UI alert and port disable. |
Use Scenario: Managing power to USB peripherals on cable/satellite STB front panel where space and thermal budget are constrained. IC Role / Device Role / Timing Role: Compact SOT-23-6 power switch with PowerPAD™ for enhanced thermal dissipation in dense layouts. Use Value: Enables 1.5 A capability in minimal footprint; 85 mΩ rDS(on) reduces θJA impact and maintains <105 °C junction at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-limited power-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2553DBVR | Same functionality and pinout, but tape-and-reel packaging (3000 pcs) vs. cut-tape (250 pcs) for TPS2553DBVT-1 | No functional difference; identical electrical specs and thermal performance | Select TPS2553DBVR for high-volume automated assembly; TPS2553DBVT-1 suits prototyping and low-volume production. |
| TPS2553-1DBVT | Identical part number except suffix "-1" denotes latch-off version - same as TPS2553DBVT-1 per TI documentation | No difference; TPS2553DBVT-1 *is* the -1 variant (latch-off), confirmed by TI's device comparison table and pin function definitions | TPS2553DBVT-1 and TPS2553-1DBVT refer to the same device; verify ordering code matches TI's official part numbering convention. |
Compared with TPS2553DBVT-1, TPS2553DBVR offers identical performance in bulk packaging for cost-sensitive production, while TPS2553-1DBVT is a redundant designation - TI's official documentation confirms TPS2553DBVT-1 is the correct orderable part for the latch-off variant in SOT-23-6.
Availability
TPS2553DBVT-1 is available at Aetrix Electronics and suitable for USB hubs, digital TVs, and set-top boxes requiring stable component supply, long-term lifecycle support, and compliance with USB 2.0 current-limiting requirements.
Supply support for TPS2553DBVT-1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The TPS255x family was designed specifically for USB-compliant power distribution, emphasizing precision current limiting, latch-off fault handling, reverse-voltage blocking, and compact packaging for space-constrained consumer electronics.
FAQ
What is the function of the ILIM pin on the TPS2553DBVT-1?
The ILIM pin on the TPS2553DBVT-1 is an output that sources a precise 1.215 V reference used to set the current-limit threshold via an external resistor (RILIM) connected to GND. The resulting current limit is calculated as ILIMIT ≈ 1000 × (1.215 V / RILIM). For TPS2553DBVT-1, this enables programmable limits from 75 mA to 1700 mA using standard 1% resistors between 15 kΩ and 232 kΩ.
Does the TPS2553DBVT-1 support USB 2.0 power delivery specifications?
Yes, the TPS2553DBVT-1 meets USB 2.0 current-limiting requirements with ±6% accuracy at 1.7 A and supports programmable limits down to 75 mA. Its 2 µs overcurrent response, latch-off behavior, and reverse-voltage protection ensure compliance with USB specification clauses for port power control, fault containment, and backfeed prevention - making it suitable for certified USB hub and peripheral designs.
How does the FAULT pin behave during a reverse-voltage event on the TPS2553DBVT-1?
During a reverse-voltage event (VOUT > VIN + 135 mV for ≥4 ms), the TPS2553DBVT-1 asserts the FAULT pin low after a 4-ms deglitch delay and turns off the internal MOSFET. FAULT remains asserted as long as the reverse condition persists or the device stays latched off. It de-asserts only after the reverse condition clears *and* the enable signal is toggled or power is cycled - consistent with its latch-off architecture.
What is the maximum continuous output current rating for the TPS2553DBVT-1?
The TPS2553DBVT-1 supports up to 1.5 A of continuous output current when operating within its recommended conditions: –40 °C ≤ TJ ≤ 105 °C, VIN = 2.5 V to 6.5 V, and with adequate PCB copper area for thermal dissipation. At higher junction temperatures (up to 125 °C), the continuous current rating reduces to 1.2 A per the datasheet's recommended operating conditions table.
Is the TPS2553DBVT-1 compatible with the TPS2550 or TPS2551?
The TPS2553DBVT-1 is backwards compatible with the TPS2550 and TPS2551 in terms of pinout and basic functionality, but differs in key aspects: it uses active-high EN (vs. active-low on TPS2550/51), offers tighter ±6% current-limit accuracy, and provides latch-off rather than constant-current limiting. System-level validation is required to confirm interoperability, especially regarding enable logic polarity and fault-handling behavior.
TPS2553DBVT-1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- SOT-23-6
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.5V ~ 6.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 1.5A
- Rds On (Typ):
- 85mOhm
- Input Type:
- Non-Inverting
- Features:
- Slew Rate Controlled, Status Flag
- Fault Protection:
- Current Limiting (Adjustable), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TPS2553DBVT-1 FAQ
1.How can I place an order for TPS2553DBVT-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2553DBVT-1 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPS2553DBVT-1 reliable?
The price and inventory of TPS2553DBVT-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2553DBVT-1 is usually 5 days.
3.What payment methods are accepted for TPS2553DBVT-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2553DBVT-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2553DBVT-1?
TPS2553DBVT-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2553DBVT-1 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPS2553DBVT-1?
For technical support, including TPS2553DBVT-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2553DBVT-1 requirements.
6.How does Aetrix verify that TPS2553DBVT-1 is sourced from the original manufacturer or authorized distributors?
All TPS2553DBVT-1 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS2553DBVT-1 meets industry standards.
7.What is the process for return or replacement of TPS2553DBVT-1?
All TPS2553DBVT-1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2553DBVT-1, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPS2553DBVT-1 part is unused and in its original packaging.
Return procedure for TPS2553DBVT-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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