TPS2051BDGNRG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The TPS2051BDGNRG4 is a Texas Instruments single-channel USB power switch with high-side load switching, handling 2.7 V to 5.5 V input and 0.75 A to 1.25 A current limiting in an 8-pin HVSSOP package with exposed pad. Available in stock worldwide.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TPS2051BDGNRG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.4283(MOQ 405)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Single-channel high-side USB power switch with 0.75 A to 1.25 A adjustable current limit protecting downstream USB peripherals
- 2.7 V to 5.5 V input range with undervoltage lockout for reliable operation across USB and battery supply rails
- 8-pin HVSSOP with exposed thermal pad enabling compact PCB integration with improved thermal dissipation at full load
Applications
The TPS2051BDGNRG4 is widely used in USB hub and host controller designs where each port needs independent current-limited power switching to protect against short-circuit events. Its undervoltage lockout ensures the port remains off during supply startup, preventing false device enumeration in laptop docking stations and desktop USB hubs. It also suits notebook and embedded single-board computer power distribution where a 5 V rail must be switched to USB-A connectors with overcurrent protection.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | UNDERVOLTAGE LOCKOUT |
| Adjustable Threshold | NO |
| Analog IC - Other Type | LOAD SWITCH |
| Input Voltage-Max | 5.5V |
| Input Voltage-Min | 2.7V |
| JESD-30 Code | S-PDSO-G8 |
| JESD-609 Code | e4 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | SQUARE |
| Package Style | SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max (Isup) | 0.07mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3.3V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold/Silver (Ni/Pd/Au/Ag) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TPS2051BDGNRG4:
Texas Instruments Fixed, 1 Channel, PDSO8
Frequently Asked Questions
What current limiting range does TPS2051BDGNRG4 provide, and how does it protect USB peripherals from shorts?
The TPS2051BDGNRG4 limits output current between 0.75 A and 1.25 A, folding back the current and holding the output low if a short is detected. This protects downstream USB peripherals from excessive current during fault events, with the switch auto-recovering once the fault is cleared, eliminating the need for manual reset.
How does the undervoltage lockout feature of TPS2051BDGNRG4 benefit USB hub designs during power-up sequencing?
The undervoltage lockout (UVLO) keeps the output switch off until the input supply rises above approximately 2.7 V, preventing the USB port from powering up with insufficient voltage that could corrupt device enumeration. In a USB hub powered from a 5 V adapter, this ensures all 4 or 7 port switches remain off during the adapter's soft-start phase, avoiding inrush spikes exceeding 1 A per port.
For a compact notebook USB port, how does the HVSSOP-8 package of TPS2051BDGNRG4 compare to a D-PAK discrete MOSFET plus current-sense solution?
The 8-pin HVSSOP footprint is roughly 3 mm x 4.9 mm, versus a D-PAK at 6.6 mm x 8 mm, saving over 50% board area. The TPS2051BDGNRG4 integrates the MOSFET, current-limit comparator, and gate driver in one package, replacing a 4-component discrete circuit and reducing BOM cost by approximately 3 to 4 parts per USB port.
When is TPS2051BDGNRG4 preferred over TPS2052B in a dual-port USB design?
TPS2051BDGNRG4 is a single-channel switch best suited when each USB port requires independent enable control and fault reporting, allowing the host to isolate one faulted port while keeping the other active. TPS2052B integrates 2 channels in one package, saving space when both ports share the same enable signal, but it does not offer per-channel fault isolation. Choose TPS2051BDGNRG4 when per-port power management and 1.25 A peak current accuracy matter more than channel density.
What input voltage range does TPS2051BDGNRG4 support, and is it compatible with 3.3 V USB systems as well as 5 V?
The device operates from 2.7 V to 5.5 V input, making it compatible with both standard 5 V USB VBUS rails and 3.3 V low-voltage logic buses found in embedded systems. At 3.3 V input, the 0.75 A minimum current limit still provides sufficient power for USB 2.0 low-power devices drawing up to 500 mA at 2.5 W.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 405+ | $0.4963 | $201.00 |
| 525+ | $0.4777 | $250.79 |
| 655+ | $0.4590 | $300.65 |
| 7500+ | $0.4381 | $3285.98 |
| 12500+ | $0.4319 | $5398.88 |
| 17500+ | $0.4283 | $7494.72 |
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