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Texas Instruments TPS54262QPWPRQ1
- Part No.:
- TPS54262QPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54262QPWPRQ1.pdf
- Description:
- IC REG BUCK ADJ 2A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,512
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Product details
Overview
TPS54262QPWPRQ1 from Texas Instruments is an automotive-grade 60-V, 2-A asynchronous step-down DC-DC converter with integrated NMOS FET, programmable voltage supervisor, and low-power mode (50 µA typical quiescent current). It operates from 3.6 V to 48 V input, delivers 0.9–18 V regulated output, and supports 200 kHz–2.2 MHz switching frequency via external RT resistor - used in automotive infotainment power rails requiring high transient immunity and reset supervision.
For engineers reviewing the TPS54262QPWPRQ1 datasheet, TPS54262QPWPRQ1 pinout, TPS54262QPWPRQ1 application, or TPS54262QPWPRQ1 equivalent, key selection considerations include its 60-V input withstand capability, open-drain RST with programmable POR delay (Cdly), slew-rate control (Rslew), external compensation (COMP/VSENSE), and HTSSOP-20 PowerPAD™ thermal performance for under-hood automotive environments.
Technical Context
The TPS54262QPWPRQ1 implements voltage-mode control with input voltage feed-forward to improve line transient regulation. Its cycle-by-cycle current limit protects the internal 500 mΩ NMOS switch, while soft-start (SS) and programmable overvoltage/undervoltage monitoring (OV_TH/RST_TH) enable robust power sequencing.
It features dual operating modes: normal switching (2-A load, 36.2°C/W θJA) and light-load low-power mode (LPM) reducing IQ to 50 µA; reset assertion includes 20 µs deglitch filtering and Cdly-based delay (3.6–7 ms/nF), with thermal shutdown at 175°C and 30°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.6 V to 48 V - withstands automotive transients up to 60 V without damage |
| Output Current | 2 A maximum - supports head unit, display, and navigation subsystems |
| Quiescent Current | 50 µA typical in LPM - enables always-on telematics modules with low standby drain |
| Switching Frequency | 200 kHz to 2.2 MHz - adjustable via RT pin resistor for size/efficiency tradeoffs |
| Reference Voltage | 0.8 V ±1.5% - sets output accuracy across temperature (–40°C to 150°C) |
| Reset Threshold | 0.768 V to 0.832 V on RST_TH - enables precise undervoltage detection for system reset |
| Thermal Shutdown | 175°C junction temp with 30°C hysteresis - prevents latch-up during sustained overload |
Pinout & Package
TPS54262QPWPRQ1 is housed in a thermally enhanced 20-pin HTSSOP (PWP) package with exposed PowerPAD™ for PCB-level heat dissipation (6.50 mm × 4.40 mm body size, RθJC(bot) = 1.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (18,19) | Unregulated input supply | Dual pins require external connection; support 60-V transient tolerance |
| PH (17) | Switch node | Source of internal NMOS FET; connects to external bootstrap capacitor and inductor |
| BOOT (20) | Bootstrap gate drive | Drives high-side gate via external capacitor between BOOT and PH |
| VReg (16) | Regulated output sense/load | Internal low-side FET pulls down during start-up or overvoltage; feeds feedback network |
| VSENSE (14) | Error amplifier inverting input | Connects to resistor divider for output voltage programming (0.9–18 V range) |
| COMP (15) | Error amplifier output | External RC compensation network stabilizes voltage-mode loop |
| EN (5) | Enable control | High-threshold (1.7 V) digital input; internal pull-up allows simple toggle control |
| RST (8) | Open-drain reset output | Asserts low when VReg falls below RST_TH threshold; filtered for noise immunity |
| Cdly (9) | POR delay timing | Capacitor-to-ground sets reset assertion delay (3.6–7 ms/nF) |
| RT (6) | Oscillator frequency set | Resistor-to-ground programs fSW from 200 kHz to 2.2 MHz |
| Rslew (7) | Slew rate control | Resistor-to-ground adjusts internal switch turn-on/off speed to reduce EMI |
| GND (10) | Power ground | Must be connected to exposed PowerPAD™ for thermal and electrical integrity |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 1 (–40°C to 125°C ambient) - validated for safety-critical vehicle systems |
| Programmable voltage supervisor | Separate OV_TH and RST_TH inputs allow independent overvoltage shutdown and undervoltage reset |
| Low-power mode (LPM) | Reduces IQ to 50 µA under light load - extends battery life in always-on telematics modules |
| Soft-start control | SS pin accepts external capacitor to ramp output voltage and limit inrush current during power-up |
| External synchronization | SYNC pin accepts 180 kHz–2.2 MHz clock to align switching with system timing or reduce EMI |
| Thermal protection | 175°C shutdown with 30°C hysteresis ensures safe recovery after overload without manual reset |
Applications
| Automotive Infotainment Head Unit | Automotive eCall Module |
|---|---|
Use Scenario: Powers main SoC, audio codec, and touchscreen controller in centralized head unit with wide input voltage variation. IC Role / Device Role / Timing Role: Primary 5-V/3.3-V buck regulator with reset supervision and transient immunity. Use Value: Withstands 60-V load dump; LPM extends battery runtime during parking mode; RST ensures clean boot after ignition cycle. |
Use Scenario: Supplies GPS module, cellular modem, and emergency button interface in crash-triggered eCall system. IC Role / Device Role / Timing Role: Always-on 3.3-V rail with POR delay and fast reset response for rapid SOS activation. Use Value: Cdly-programmed POR delay avoids false resets during ignition transients; 50 µA LPM enables >1-year backup battery life. |
| Automotive Digital Cluster Display | Automotive Navigation System |
Use Scenario: Generates stable 1.2-V core and 5-V peripheral rails for TFT-LCD driver and microcontroller in instrument cluster. IC Role / Device Role / Timing Role: Dual-output capable (with external circuitry); provides accurate voltage tracking and thermal margin. Use Value: 0.8 V reference ±1.5% ensures display brightness consistency; HTSSOP PowerPAD™ sustains 125°C ambient operation. |
Use Scenario: Powers GNSS receiver, RF front-end, and map storage in embedded navigation unit with CAN bus interface. IC Role / Device Role / Timing Role: High-efficiency buck stage preceding LDOs; synchronized switching reduces RF interference. Use Value: SYNC pin enables EMI reduction by aligning fSW with CAN bit timing; Rslew control minimizes conducted emissions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 42-V input, 1-A output, constant-on-time control; no integrated voltage supervisor or RST | Lacks programmable reset and overvoltage monitoring; requires external supervisor IC for POR | Choose when lower cost and simpler design outweigh need for integrated supervision |
| TPS54362QPWPRQ1 | Same family, 3-A output, identical pinout and feature set except higher current rating | Direct upgrade path for designs needing >2-A load current; shares layout and compensation | Choose when future-proofing for higher load or margin expansion is required |
Compared with LM5164QPWPRQ1, TPS54262QPWPRQ1 offers integrated reset and overvoltage functions that eliminate external components and improve system reliability; compared with TPS54362QPWPRQ1, it provides optimal BOM cost and thermal footprint for 2-A applications without overdesign.
Availability
TPS54262QPWPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, telematics, digital cluster, and navigation systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.
Supply support for TPS54262QPWPRQ1 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 automotive ICs, with decades of automotive qualification expertise and broad power management portfolio.
The TPS54262-Q1 product line delivers high-voltage, low-quiescent-current buck converters designed specifically for harsh automotive environments - emphasizing transient robustness, supervision integration, and thermal resilience.
FAQ
What is the absolute maximum input voltage rating for TPS54262QPWPRQ1?
The TPS54262QPWPRQ1 has an absolute maximum VIN rating of 60 V, allowing it to survive automotive load-dump transients without external clamping. This rating applies across all pins including VIN (18/19), PH, and BOOT. Operation above 48 V is permitted only during transient events - continuous operation must remain within the recommended 3.6–48 V range per datasheet Section 6.3.
How does the low-power mode (LPM) function in TPS54262QPWPRQ1?
TPS54262QPWPRQ1 enters low-power mode automatically during light-load discontinuous conduction mode (DCM), reducing quiescent current to 50 µA typical. LPM is controlled via the LPM pin (4), which accepts a digital signal to force entry/exit; when unconnected, internal 62 kΩ pulldown enables automatic transition. This mode maintains regulation while minimizing battery drain in always-on automotive modules.
Can TPS54262QPWPRQ1 be synchronized to an external clock?
Yes, TPS54262QPWPRQ1 supports external synchronization via the SYNC pin (3). An external clock signal between 180 kHz and 2.2 MHz can override the internal oscillator, provided it falls within 180 kHz < fext < 2 × fsw < 2.2 MHz. The device defaults to internal RT-set frequency if SYNC remains static for >32 µs, ensuring fail-safe operation during clock loss.
What is the purpose of the Rslew pin on TPS54262QPWPRQ1?
The Rslew pin (7) on TPS54262QPWPRQ1 connects to an external resistor to ground that controls the slew rate of the internal NMOS switch. Adjusting Rslew modifies gate drive strength, enabling EMI optimization: higher resistance slows switching edges (reducing high-frequency noise), while lower resistance increases efficiency at the cost of higher radiated emissions - critical for automotive EMC compliance.
How is the reset delay programmed on TPS54262QPWPRQ1?
The reset delay on TPS54262QPWPRQ1 is programmed using an external capacitor on the Cdly pin (9). The delay follows 3.6–7 ms/nF scaling, meaning a 100 nF capacitor yields ~360–700 ms of POR delay before RST is released high. This capacitor also sets the power-down reset assertion delay, providing consistent sequencing across both startup and brownout conditions.
TPS54262QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3.6V
- Voltage - Input (Max):
- 48V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 18V
- Current - Output:
- 2A
- Frequency - Switching:
- 200kHz ~ 2.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS54262QPWPRQ1 FAQ
1.How can I place an order for TPS54262QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54262QPWPRQ1 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 TPS54262QPWPRQ1 reliable?
The price and inventory of TPS54262QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54262QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS54262QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54262QPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54262QPWPRQ1?
TPS54262QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54262QPWPRQ1 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 TPS54262QPWPRQ1?
For technical support, including TPS54262QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54262QPWPRQ1 requirements.
6.How does Aetrix verify that TPS54262QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54262QPWPRQ1 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 TPS54262QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS54262QPWPRQ1?
All TPS54262QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54262QPWPRQ1, 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 TPS54262QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS54262QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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