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Texas Instruments TPS2042BDGNRG4
- Part No.:
- TPS2042BDGNRG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
TPS2042BDGNRG4.pdf
- Description:
- IC PWR SWITCH N-CHAN 1:2 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,678
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Product details
Overview
TPS2042BDGNRG4 from Texas Instruments is a dual-channel, current-limited, high-side power-distribution switch featuring two 70mΩ N-channel MOSFETs, 500mA continuous output per channel, thermal and short-circuit protection, and operation from 2.7V to 5.5V. It serves as a fault-protected power gate in USB peripheral ports, hot-swap interfaces, and point-of-load distribution where heavy capacitive loads and transient overloads occur.
For engineers reviewing the TPS2042BDGNRG4 datasheet, TPS2042BDGNRG4 pinout, TPS2042BDGNRG4 application, or TPS2042BDGNRG4 equivalent, key selection criteria include per-channel current limiting (0.75–1.25A), fast rise time (0.6ms typical), undervoltage lockout (2.0–2.6V threshold), deglitched OC reporting, and ultra-low standby current (≤1μA per channel).
Technical Context
The TPS2042BDGNRG4 integrates two independent high-side switches with internal charge-pump gate drivers enabling full enhancement down to 2.7V input-eliminating external components while controlling rise/fall times to suppress inrush surges. Each channel operates autonomously: EN1/EN2 enable logic-low inputs control OUT1/OUT2 respectively, and OC1/OC2 provide open-drain, active-low fault signals with 4–15ms deglitching.
Current limiting is implemented via constant-current foldback during overload or short-circuit events; thermal shutdown activates at 135°C junction temperature with 10°C hysteresis and automatic recovery. Internal UVLO prevents operation below valid supply voltage, and reverse leakage remains ≤0.2μA at 5.5V output-to-input reverse bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Output Current | 500mA per channel - supports USB-compliant downstream ports and low-power peripherals without external current sensing. |
| rDS(on) | 70mΩ typical at 5V - minimizes conduction loss (≤17.5mW at 500mA) and self-heating in compact HVSSOP-8 packages. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, 3.3V logic rails, and 5V USB VBUS without level-shifting. |
| Rise Time (tr) | 0.6ms typical - limits inrush di/dt into large capacitive loads (e.g., 100µF bus capacitance) to prevent supply droop. |
| Standby Supply Current | ≤1μA per channel - enables always-on power gating in battery-backed systems with negligible quiescent drain. |
| Overcurrent Threshold | 0.75A min / 1.25A max - provides accurate, temperature-stable current limiting across –40°C to 85°C ambient range. |
| Thermal Shutdown | 135°C trip, 125°C recovery - protects against sustained overload or PCB-level thermal runaway without latch-up. |
Pinout & Package
HVSSOP-8 package (3.0mm × 3.0mm body, 0.65mm pitch); thermally enhanced PowerPAD™ internally connected to GND for PCB heat sinking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Primary return path for both channels and internal charge pump; must be connected to PowerPAD™ and system ground plane. |
| IN (Pin 2) | Power input | Common input rail for both high-side switches; accepts 2.7–5.5V with integrated UVLO. |
| EN1 (Pin 3) | Channel 1 enable | Logic-low input enables OUT1; no pull-up required - direct interface with microcontroller GPIO or PMIC sequencer. |
| EN2 (Pin 4) | Channel 2 enable | Logic-low input enables OUT2; independent control allows staggered power-up of dual-rail subsystems. |
| OC1 (Pin 5) | Channel 1 fault flag | Open-drain, active-low signal asserted during overcurrent or thermal shutdown; 4–15ms deglitch prevents false triggers. |
| OUT2 (Pin 6) | Channel 2 output | Switched power output for second load; rated for 500mA continuous, 70mΩ on-resistance. |
| OUT1 (Pin 7) | Channel 1 output | Switched power output for first load; electrically isolated from OUT2 but shares IN and GND. |
| OC2 (Pin 8) | Channel 2 fault flag | Independent open-drain fault indicator for OUT2; enables per-channel fault diagnostics in multi-load systems. |
Key Features
| Feature | Design Value |
|---|---|
| 70mΩ High-Side MOSFET | Reduces conduction loss and thermal stress in space-constrained HVSSOP-8 layout; eliminates need for external FETs and drivers. |
| Accurate Current Limit (0.75–1.25A) | Guarantees consistent trip behavior across voltage and temperature - avoids overdesign of downstream protection circuitry. |
| Deglitched OC Reporting | 4–15ms noise immunity prevents spurious fault interrupts during switching transients or ESD events. |
| No OC Glitch During Power-Up | Ensures clean system initialization - OC outputs remain high-Z until stable regulation is achieved, avoiding false host alerts. |
| UL Recognition (E169910) | Validates safety compliance for end-equipment certification in industrial and consumer applications without additional testing. |
Applications
| USB Peripheral Port Protection | Hot-Swap Board Insertion |
|---|---|
Use Scenario: Powering USB devices (keyboards, hubs, storage) from a shared 5V rail with risk of short circuits or plug-in inrush. IC Role / Device Role / Timing Role: Dual-channel high-side switch providing independent, current-limited, fault-protected power delivery to two downstream USB ports. Use Value: Prevents bus collapse during hot-plug events; OC1/OC2 signals feed directly to host controller for per-port fault isolation and recovery. |
Use Scenario: Inserting expansion cards or modules into live backplanes with mismatched capacitance or pre-charged loads. IC Role / Device Role / Timing Role: Controlled power ramp generator using 0.6ms rise time to limit di/dt and avoid supply sag or reset glitches. Use Value: Enables safe hot-swap without auxiliary sequencing ICs; thermal shutdown protects against connector arcing or misalignment faults. |
| Industrial I/O Module Power Gating | Embedded System Subsystem Isolation |
Use Scenario: Distributing 3.3V or 5V to sensor clusters, actuators, or communication interfaces subject to cable shorts or ESD-induced latch-up. IC Role / Device Role / Timing Role: Fault-tolerant power switch with UL-recognized isolation and thermal cutoff for field-deployed equipment. Use Value: Eliminates need for fuses or resettable PTCs; automatic recovery after cooling reduces maintenance downtime. |
Use Scenario: Partitioning MCU, memory, and peripheral power domains to reduce standby leakage and support selective wake-up. IC Role / Device Role / Timing Role: Ultra-low-quiescent (≤1μA/channel) power gate enabling deep-sleep modes in battery-powered edge nodes. Use Value: Extends battery life by cutting off unused subsystems while retaining fast (<3ms) turn-on response for real-time wake events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel power-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS2042BDRBR | Same electrical specs and pinout, but SON-8 package (3.0mm × 3.0mm) with bottom-exposed thermal pad instead of HVSSOP-8's side-exposed PowerPAD™. | Requires different PCB land pattern and reflow profile; better thermal performance (RθJB = 14.2°C/W vs 35.5°C/W) but less compatible with legacy HVSSOP footprints. | Select TPS2042BDRBR only when board-level thermal dissipation is critical and layout revision is feasible. |
| TPS2052BDGNR | Identical HVSSOP-8 package and pinout, but features logic-high enable (ENx = high to turn on) and higher current-limit threshold (1.55–2A). | Suitable for higher-power loads (e.g., motor drivers, LED arrays); incompatible with existing low-enable control logic without level-shifting. | Choose TPS2052BDGNR only when higher trip current is required and enable polarity can be accommodated in firmware/hardware. |
Compared with TPS2042BDGNRG4, TPS2042BDRBR offers superior thermal resistance but demands layout changes, while TPS2052BDGNR retains mechanical compatibility but alters enable polarity and current-limit behavior - neither is drop-in; both require validation of control logic and thermal margin.
Availability
TPS2042BDGNRG4 is available at Aetrix Electronics and suitable for USB port protection, hot-swap board insertion, and industrial I/O module power gating requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS2042BDGNRG4 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 power management technologies with over 90 years of innovation in reliable, high-performance IC design.
The TPS20xxB family is engineered for robust power distribution in USB, computing, and industrial systems - delivering integrated current limiting, thermal protection, and low-EMI switching in miniature packages.
FAQ
What is the maximum continuous current rating per channel for the TPS2042BDGNRG4?
The TPS2042BDGNRG4 supports 500mA continuous output current per channel under recommended operating conditions (TJ ≤ 125°C, VI(IN) = 2.7–5.5V). This rating is validated across the full –40°C to 85°C ambient temperature range and accounts for thermal derating in the HVSSOP-8 package with proper PCB copper area.
Does the TPS2042BDGNRG4 support independent enable and fault reporting for each channel?
Yes, the TPS2042BDGNRG4 provides fully independent control and monitoring: EN1 and EN2 are separate logic-low enable inputs for OUT1 and OUT2, while OC1 and OC2 deliver dedicated open-drain, active-low fault signals for each channel - enabling precise per-load diagnostics and sequencing in multi-rail systems.
What is the purpose of the PowerPAD™ in the TPS2042BDGNRG4 HVSSOP-8 package?
The PowerPAD™ in the TPS2042BDGNRG4 is an exposed thermal pad on the underside of the HVSSOP-8 package, internally connected to GND. It must be soldered to a PCB copper pour tied to the system ground plane to lower junction-to-board thermal resistance (RθJB = 35.5°C/W), improving power handling and reliability during sustained 500mA operation.
How does the TPS2042BDGNRG4 handle short-circuit events?
Upon detecting an output short, the TPS2042BDGNRG4 enters constant-current mode, limiting output current to 0.75–1.25A. If power dissipation causes junction temperature to reach 135°C, thermal shutdown disables the affected channel. Recovery occurs automatically once TJ falls to 125°C, and OC1/OC2 assert low to signal the fault condition with 4–15ms deglitching.
Is the TPS2042BDGNRG4 compliant with safety standards for end-equipment certification?
Yes, the TPS2042BDGNRG4 carries UL Recognition under File Number E169910, confirming compliance with UL 60950-1 and UL 62368-1 for insulation, flammability, and fault withstand - reducing certification burden for industrial, medical, and consumer products integrating this device.
TPS2042BDGNRG4 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:
- Discontinued at Digi-Key
- Switch Type:
- General Purpose
- Number of Outputs:
- 2
- 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:
- 8-HVSSOP
TPS2042BDGNRG4 FAQ
1.How can I place an order for TPS2042BDGNRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS2042BDGNRG4 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 TPS2042BDGNRG4 reliable?
The price and inventory of TPS2042BDGNRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS2042BDGNRG4 is usually 5 days.
3.What payment methods are accepted for TPS2042BDGNRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS2042BDGNRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS2042BDGNRG4?
TPS2042BDGNRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS2042BDGNRG4 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 TPS2042BDGNRG4?
For technical support, including TPS2042BDGNRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS2042BDGNRG4 requirements.
6.How does Aetrix verify that TPS2042BDGNRG4 is sourced from the original manufacturer or authorized distributors?
All TPS2042BDGNRG4 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 TPS2042BDGNRG4 meets industry standards.
7.What is the process for return or replacement of TPS2042BDGNRG4?
All TPS2042BDGNRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS2042BDGNRG4, 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 TPS2042BDGNRG4 part is unused and in its original packaging.
Return procedure for TPS2042BDGNRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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