My Inquiry
My Account
Texas Instruments TPS2149IDGNRG4
- Part No.:
- TPS2149IDGNRG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS2149IDGNRG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:2 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,665
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS2149IDGNRG4 from Texas Instruments is a USB bus-powered hub power management IC integrating a 3.3-V/200-mA LDO regulator and two independent 5-V high-side power switches (340-mΩ typical RDS(on)) in an MSOP-8 PowerPAD™ package. It delivers controlled power to downstream USB ports while regulating 5-V bus voltage for the hub controller, supporting hot-plug compliance and enumeration sequencing in compact hubs.
For engineers reviewing the TPS2149IDGNRG4 datasheet, TPS2149IDGNRG4 pinout, TPS2149IDGNRG4 application, or TPS2149IDGNRG4 equivalent, key selection criteria include dual independent enable logic (active-low), integrated overcurrent flag with transient filtering, thermal shutdown thresholds at 120°C (per switch) and 155°C (global), and guaranteed operation across −40°C to 85°C ambient.
Technical Context
The TPS2149IDGNRG4 implements two N-channel high-side MOSFETs with independent EN1/EN2 inputs and shared VIN supply, enabling per-port power control during USB enumeration. Each switch features current-limiting (200–400 mA), thermal sensing with dual-threshold protection (120°C local, 155°C global), and controlled rise/fall times (0.1–6 ms) to suppress inrush transients.
Its integrated 3.3-V fixed-output LDO supplies the USB controller with 200 mA continuous current, 0.35-V dropout at 200 mA, and 50-dB PSRR at 1 kHz. The OC open-drain output reports combined overcurrent or overtemperature faults with built-in deglitching (50 µs) and hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.9 V to 5.5 V - supports full USB 2.0 bus voltage range including worst-case droop. |
| LDO Output | 3.3 V ±3% at 200 mA - powers USB hub controllers and pull-up resistors without external regulation. |
| Switch RDS(on) | 340 mΩ (typ) at 25°C - limits conduction loss to ≤100 mW per switch at 150 mA load. |
| Continuous Switch Current | 150 mA per channel - meets USB BPH downstream port steady-state current requirements. |
| Overcurrent Response Delay | 5.5 ms (assert), 10.5 ms (deassert) - filters transient inrush while detecting sustained faults. |
| Thermal Shutdown Thresholds | 120°C (per-switch), 155°C (global) - enables fault isolation without disabling entire hub. |
| Enable Logic | Active-low EN1/EN2 - compatible with standard USB hub controller GPIO outputs. |
Pinout & Package
TPS2149IDGNRG4 is housed in an 8-pin MSOP package with exposed thermal pad (PowerPAD™), optimized for low thermal resistance in space-constrained USB hub PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1 | Logic input (active-low) | Enables OUT1; TTL/CMOS-compatible; pulls down to disable downstream port 1. |
| EN2 | Logic input (active-low) | Enables OUT2; independent of EN1 for per-port power sequencing during enumeration. |
| GND | Ground reference | Common return for LDO, switches, and OC output; connects to PowerPAD™ for thermal dissipation. |
| LDO_OUT | Regulated output | 3.3-V supply for USB controller IC and 1.5-kΩ D+ pull-up resistor. |
| OC | Open-drain fault flag | Asserts low on overcurrent or overtemperature; requires external pull-up for system-level fault reporting. |
| OUT1 | Switched output | 5-V power delivery to first downstream USB port; current-limited and thermally protected. |
| OUT2 | Switched output | 5-V power delivery to second downstream USB port; fully independent of OUT1. |
| VIN | Primary input | 5-V USB bus input shared by LDO and both high-side switches; includes undervoltage lockout (2.2–2.85 V). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent high-side switches | Enables per-port power enable/disable during USB enumeration without affecting other ports. |
| Integrated 3.3-V/200-mA LDO | Eliminates need for external 3.3-V regulator, reducing BOM count and board area by up to 60%. |
| Per-switch thermal protection | 120°C trip isolates faulty port only; 10°C hysteresis enables auto-recovery after cooling. |
| OC output with transient filter | 50-µs deglitch prevents false trips from capacitor inrush; no external RC components required. |
| Controlled switching timing | Rise/fall times (0.1–6 ms) limit di/dt, suppressing EMI and voltage overshoot during hot-plug events. |
Applications
| USB Bus-Powered Hub | Keyboard Hub Interface |
|---|---|
|
Use Scenario: Two-port USB hub drawing power solely from upstream USB host port. IC Role / Device Role / Timing Role: TPS2149IDGNRG4 provides regulated 3.3-V power to hub controller and independently switched 5-V power to each downstream port. Use Value: Enables full USB 2.0 compliance including <100-mA startup current, hot-plug detection, and per-port overcurrent reporting via OC pin. |
Use Scenario: Compact keyboard with integrated USB hub supporting multiple peripherals (e.g., mouse, flash drive). IC Role / Device Role / Timing Role: TPS2149IDGNRG4 powers the embedded hub controller and selectively energizes downstream ports only after enumeration completes. Use Value: Prevents excessive inrush during plug-in; maintains bus stability by limiting each port to 150 mA continuous current. |
| Monitor USB Hub | Hub Box Expansion Unit |
|
Use Scenario: Display-mounted USB hub providing data/power to connected accessories (webcam, speakers, storage). IC Role / Device Role / Timing Role: TPS2149IDGNRG4 regulates 3.3-V supply for hub IC and delivers controlled 5-V power to two downstream ports with independent enable control. Use Value: Dual thermal shutdown thresholds ensure single-port fault (e.g., shorted cable) does not disrupt power to monitor or other peripherals. |
Use Scenario: Desktop hub box adding four or more USB ports via cascaded hub architecture. IC Role / Device Role / Timing Role: TPS2149IDGNRG4 serves as secondary hub power manager, supplying 3.3-V logic and 5-V port power with OC fault signaling to upstream controller. Use Value: Integrated current limiting and overcurrent flag reduce need for discrete protection circuitry, simplifying layout and improving reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar USB bus-powered hub power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2149IDGN | Same silicon, RoHS-compliant green packaging without G4 suffix; identical electrical specs and pinout. | No functional difference; used in same USB hub designs requiring lead-free assembly. | Select TPS2149IDGN when G4 marking is not required and standard green RoHS compliance suffices. |
| TPS2159IDGN | Pin-compatible variant with active-high EN1/EN2 inputs instead of active-low; otherwise identical LDO and switch specs. | Requires inverted enable signals from hub controller; unsuitable where firmware expects active-low control. | Choose TPS2159IDGN only if host controller GPIOs are configured for active-high logic and layout allows no changes. |
Compared with TPS2149IDGNRG4, TPS2149IDGN offers identical performance with standard RoHS compliance, while TPS2159IDGN shifts enable polarity-requiring firmware and signal routing validation before substitution.
Availability
TPS2149IDGNRG4 is available at Aetrix Electronics and suitable for USB bus-powered hubs, keyboard-integrated hubs, and monitor-embedded peripheral interfaces requiring stable component supply across industrial temperature ranges and long-life production programs.
Supply support for TPS2149IDGNRG4 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 leader specializing in analog, embedded processing, and connectivity solutions, with decades of expertise in power management IC design.
The TPS2149IDGNRG4 belongs to TI's USB power distribution switch family, engineered specifically to meet USB 2.0 bus-powered hub requirements-including enumeration sequencing, per-port current limiting, and integrated LDO regulation.
FAQ
What is the primary function of the TPS2149IDGNRG4 in a USB hub design?
The TPS2149IDGNRG4 integrates a 3.3-V/200-mA LDO regulator and two independent 5-V high-side power switches into a single MSOP-8 package. In a USB hub, it supplies regulated 3.3-V power to the hub controller IC while delivering controlled 5-V power to downstream ports-enabling enumeration compliance, hot-plug safety, and per-port fault isolation. Its design eliminates discrete regulators and switches, reducing board area by up to 60% versus traditional implementations.
Does the TPS2149IDGNRG4 support USB 2.0 bus-powered hub specifications?
Yes, the TPS2149IDGNRG4 is explicitly designed to meet USB 2.0 bus-powered hub (BPH) requirements. It supports <100-mA startup current via independent EN1/EN2 control, provides integrated current limiting (200–400 mA per port), delivers overcurrent status via the OC pin, and incorporates controlled rise/fall times to limit inrush. Its 2.9–5.5-V input range covers USB bus voltage tolerances, and its −40°C to 85°C operating range satisfies industrial USB deployment needs.
How does the thermal protection scheme work in the TPS2149IDGNRG4?
The TPS2149IDGNRG4 implements dual-threshold thermal protection: a local 120°C trip disables only the affected switch during overcurrent, preserving operation of the other port; a global 155°C trip shuts down all functions. Hysteresis of ~10°C enables automatic recovery after cooling. This architecture ensures fault containment-e.g., a shorted downstream cable disables only one port-while maintaining system uptime and simplifying thermal design in compact enclosures.
What is the role of the OC pin on the TPS2149IDGNRG4?
The OC (overcurrent) pin on the TPS2149IDGNRG4 is an open-drain output that asserts low when either switch experiences overcurrent or overtemperature conditions. It includes internal 50-µs deglitching to reject transient inrush events, eliminating need for external filtering. System designers connect OC to a microcontroller interrupt or status register to trigger port disablement, logging, or user alerts-enabling real-time fault response without software polling.
Can the TPS2149IDGNRG4 be used with 3.3-V logic enable signals?
Yes, the TPS2149IDGNRG4 EN1 and EN2 inputs are CMOS- and TTL-compatible with VIL ≤ 0.8 V and VIH ≥ 2.0 V, making them fully interoperable with 3.3-V logic systems. When driven low (≤0.8 V), the corresponding switch enables; when high (≥2.0 V), it disables. Input leakage is only 5 µA, minimizing loading on controller GPIOs. This compatibility allows direct interfacing with common USB hub controllers operating at 3.3-V I/O levels.
TPS2149IDGNRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- USB Switch
- Number of Outputs:
- 2
- Ratio - Input:Output:
- 1:2
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.9V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 200mA
- Rds On (Typ):
- 340mOhm
- Input Type:
- Non-Inverting
- Features:
- Status Flag
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 100°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-HVSSOP
TPS2149IDGNRG4 FAQ
1.How can I place an order for TPS2149IDGNRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2149IDGNRG4 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 TPS2149IDGNRG4 reliable?
The price and inventory of TPS2149IDGNRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2149IDGNRG4 is usually 5 days.
3.What payment methods are accepted for TPS2149IDGNRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2149IDGNRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2149IDGNRG4?
TPS2149IDGNRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2149IDGNRG4 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 TPS2149IDGNRG4?
For technical support, including TPS2149IDGNRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2149IDGNRG4 requirements.
6.How does Aetrix verify that TPS2149IDGNRG4 is sourced from the original manufacturer or authorized distributors?
All TPS2149IDGNRG4 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 TPS2149IDGNRG4 meets industry standards.
7.What is the process for return or replacement of TPS2149IDGNRG4?
All TPS2149IDGNRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2149IDGNRG4, 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 TPS2149IDGNRG4 part is unused and in its original packaging.
Return procedure for TPS2149IDGNRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2149IDGNRG4 Tags
-
TPS22919DCKR
Texas Instruments
-
MIC2091-1YM5-TR
Microchip Technology
-
MIC2090-1YM5-TR
Microchip Technology
-
TPS22995RZFR
Texas Instruments
-
TPS22975DSGR
Texas Instruments
-
SIP32510DT-T1-GE3
Vishay Siliconix
-
ULN2003D1013TR
STMicroelectronics
-
MIC2005A-1YM5-TR
Microchip Technology
-
MIC2005A-1YM6-TR
Microchip Technology
-
TPS22916BYFPR
Texas Instruments
-
TPS22917DBVR
Texas Instruments
-
ULN2003APWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
