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Texas Instruments TPS2044BDRG4
- Part No.:
- TPS2044BDRG4
- Manufacturer:
- Texas Instruments
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS2044BDRG4.pdf
- Description:
- IC PWR SWITCH N-CH 2X1:2 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TPS2044BDRG4 from Texas Instruments is a quad-channel, current-limited power-distribution switch with 70mΩ high-side N-channel MOSFETs, 500mA continuous per channel, 2.7V–5.5V input range, and integrated thermal/short-circuit protection. It enables controlled power sequencing in USB peripheral hubs, industrial I/O modules, and embedded computing backplanes.
For engineers reviewing the TPS2044BDRG4 datasheet, TPS2044BDRG4 pinout, TPS2044BDRG4 application, or TPS2044BDRG4 equivalent, key selection criteria include per-channel enable control, deglitched OC reporting, <1μA standby current, 0.6ms typical rise time, and SOIC-16 package compatibility with heavy capacitive loads and short-circuit-prone systems.
Technical Context
The TPS2044BDRG4 integrates four independent high-side switches, each driven by an internal charge pump enabling operation down to 2.7V without external components. Each channel features logic-level enable inputs (active-low for TPS204xB series) and dedicated open-drain overcurrent outputs (OC1–OC4) with 4–15ms deglitch timing.
It implements precise current limiting (0.75A min / 1.25A max short-circuit trip), undervoltage lockout (2.0–2.6V rising threshold), and thermal shutdown at 135°C with 10°C hysteresis. Recovery is automatic after junction cooling to 125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | Quad independent high-side power switches |
| rDS(on) | 70 mΩ typical at 5V; enables low conduction loss and <0.25W dissipation at 500mA |
| Current limit | 0.75A minimum / 1.25A maximum short-circuit trip; ensures safe fault containment |
| Input voltage | 2.7V–5.5V operating range; supports single-supply USB 2.0/3.0 and 3.3V/5V system rails |
| Rise time | 0.6 ms typical; controls inrush surge into 100µF+ capacitive loads |
| Standby current | ≤2 µA max (all channels disabled); critical for battery-backed or always-on subsystems |
| Operating temp | –40°C to +85°C ambient; qualified for industrial and extended-temperature embedded use |
Pinout & Package
TPS2044BDRG4 is housed in a 16-pin SOIC (D) package measuring 9.90mm × 3.91mm, with exposed PowerPAD™ thermally connected to GND for enhanced heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,5) | Ground reference and thermal pad connection | Must be soldered to large PCB copper area; internal PowerPAD™ tied to these pins |
| IN1 (Pin 2), IN2 (Pin 6) | Input voltage supply rails | Dual-input architecture: IN1 powers OUT1/OUT2; IN2 powers OUT3/OUT4 |
| EN1–EN4 (Pins 3,4,7,8) | Active-low enable inputs | Logic-low assertion turns on respective channel; compatible with standard CMOS/LVTTL control |
| OUT1–OUT4 (Pins 15,14,11,10) | Switched power outputs | Each drives independent load; no cross-conduction between channels |
| OC1–OC4 (Pins 16,13,12,9) | Open-drain overcurrent fault indicators | Active-low, deglitched signals; require external pull-up for microcontroller interrupt or status monitoring |
Key Features
| Feature | Design Value |
|---|---|
| Integrated charge pump | Enables full 70mΩ rDS(on) performance down to 2.7V input without external boost components |
| Per-channel enable & fault reporting | Four independent ENx/OCx pairs allow granular power management and diagnostics in multi-rail systems |
| Accurate current limiting | Guaranteed 0.75A–1.25A trip window minimizes false trips while ensuring robust short-circuit protection |
| No OC glitch at power-up | Internal sequencing prevents spurious OC assertions during VIN ramp, simplifying system initialization |
| UL Recognized (E169910) | Meets safety requirements for end-equipment certification in commercial and industrial applications |
Applications
| USB Peripheral Hub Power Management | Industrial Digital I/O Module |
|---|---|
Use Scenario: Distributing clean, protected 5V power to four downstream USB ports with individual port disable capability. IC Role / Device Role / Timing Role: Quad high-side switch providing per-port current limiting, hot-swap sequencing, and fault isolation. Use Value: Prevents bus-wide collapse during cable short or device malfunction; enables software-controlled port reset without main rail interruption. | Use Scenario: Powering four isolated 24V DC input sensor channels with transient and ESD protection. IC Role / Device Role / Timing Role: High-side distribution switch delivering regulated 5V logic power to optocoupler interfaces and signal conditioning circuits. Use Value: Limits inrush into input filter caps; reports faults via OCx to PLC controller before damage occurs. |
| Embedded Computing Backplane | Medical Diagnostic Equipment Subsystem |
Use Scenario: Sequencing power to four FPGA mezzanine cards with staggered startup to avoid peak current overload. IC Role / Device Role / Timing Role: Independent channel enable control with 0.6ms rise time ensures controlled voltage ramp per card. Use Value: Eliminates need for discrete RC delay networks; reduces BOM count and layout complexity. | Use Scenario: Isolating auxiliary 3.3V/5V rails for patient-connected sensor front-ends with fail-safe shutdown. IC Role / Device Role / Timing Role: Current-limited power switch with thermal shutdown and deglitched OC reporting for safety-critical monitoring. Use Value: Meets IEC 60601-1 creepage/clearance requirements via SOIC-16 spacing; automatic recovery avoids manual reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power-distribution switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2044BD | Same SOIC-16 package and pinout; identical electrical specs; G4 suffix denotes green/RoHS-compliant packaging | No functional difference; suitable for drop-in replacement where RoHS compliance is required | Select TPS2044BD if legacy non-RoHS assembly is acceptable; TPS2044BDRG4 preferred for new designs |
| TPS2054BDR | Active-high enable logic (vs active-low in TPS2044B); otherwise identical SOIC-16 footprint and current specs | Requires inverted control signal routing; not pin-compatible without logic adaptation | Choose TPS2054BDR only when system firmware already uses active-high enable signaling |
Compared with TPS2044BD and TPS2054BDR, the TPS2044BDRG4 offers guaranteed RoHS compliance and native active-low enable compatibility-critical for direct integration with microcontroller GPIOs without level-shifting or inversion logic.
Availability
TPS2044BDRG4 is available at Aetrix Electronics and suitable for USB peripheral hubs, industrial I/O modules, and embedded computing backplanes requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for TPS2044BDRG4 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 technologies with over 90 years of innovation.
The TPS20xxB family was designed specifically for robust, low-risk power distribution in systems subject to heavy capacitive loads and frequent short-circuit events-targeting USB, industrial automation, and medical equipment.
FAQ
What is the maximum continuous current per channel for the TPS2044BDRG4?
The TPS2044BDRG4 supports 500mA continuous current per channel under recommended operating conditions (TA ≤ 85°C, proper PCB thermal design). Its current-limit threshold is specified from 0.75A (min) to 1.25A (max) for short-circuit protection, ensuring reliable operation even during transient overloads without latch-off behavior.
Does the TPS2044BDRG4 require external components for charge pump operation?
No, the TPS2044BDRG4 integrates a fully self-contained charge pump that requires no external capacitors or inductors. This internal circuit enables full 70mΩ rDS(on) performance across the entire 2.7V–5.5V input range, eliminating board space and BOM cost associated with discrete boost solutions.
How does the TPS2044BDRG4 handle simultaneous short circuits on multiple channels?
The TPS2044BDRG4 independently limits current on each channel during overloads. If multiple channels experience short circuits simultaneously, each enters constant-current mode and asserts its respective OCx output. Thermal shutdown activates only if cumulative power dissipation raises junction temperature to 135°C-ensuring graceful degradation rather than immediate global failure.
What is the purpose of the dual input rails (IN1 and IN2) on the TPS2044BDRG4?
The dual input structure (IN1 for OUT1/OUT2; IN2 for OUT3/OUT4) allows independent power domain management-for example, connecting IN1 to a 5V USB rail and IN2 to a separate 3.3V LDO. This prevents fault propagation between domains and supports mixed-voltage system architectures without inter-rail coupling.
Is the TPS2044BDRG4 pin-compatible with earlier TPS2044 variants?
Yes, the TPS2044BDRG4 is pin-compatible with TPS2044BD and TPS2044DR in the SOIC-16 (D) package. The "RG4" suffix indicates green/RoHS-compliant packaging and tape-and-reel delivery-but all share identical pinout, electrical characteristics, and thermal performance per the SLVS514P datasheet.
TPS2044BDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Switch Type:
- General Purpose
- Number of Outputs:
- 4
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- On/Off
- Voltage - Load:
- 2.7V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- Not Required
- Current - Output (Max):
- 500mA
- Rds On (Typ):
- 70mOhm
- Input Type:
- Inverting
- Features:
- -
- Fault Protection:
- Current Limiting (Fixed), Over Temperature, UVLO
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
TPS2044BDRG4 FAQ
1.How can I place an order for TPS2044BDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2044BDRG4 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 TPS2044BDRG4 reliable?
The price and inventory of TPS2044BDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2044BDRG4 is usually 5 days.
3.What payment methods are accepted for TPS2044BDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2044BDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2044BDRG4?
TPS2044BDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2044BDRG4 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 TPS2044BDRG4?
For technical support, including TPS2044BDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2044BDRG4 requirements.
6.How does Aetrix verify that TPS2044BDRG4 is sourced from the original manufacturer or authorized distributors?
All TPS2044BDRG4 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 TPS2044BDRG4 meets industry standards.
7.What is the process for return or replacement of TPS2044BDRG4?
All TPS2044BDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2044BDRG4, 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 TPS2044BDRG4 part is unused and in its original packaging.
Return procedure for TPS2044BDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS2044BDRG4 Tags
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