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Texas Instruments TPS62261TDRVRQ1
- Part No.:
- TPS62261TDRVRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS62261TDRVRQ1.pdf
- Description:
- IC REG BUCK 1.8V 600MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS62261TDRVRQ1 from Texas Instruments is an automotive-grade, synchronous step-down DC-DC converter delivering up to 600 mA output current with fixed 1.8 V output, 2.25 MHz switching frequency, and 15 μA typical quiescent current in Power Save Mode - optimized for Li-ion-powered portable electronics including infotainment displays and ADAS sensor modules.
For engineers reviewing the TPS62261TDRVRQ1 datasheet, TPS62261TDRVRQ1 pinout, TPS62261TDRVRQ1 application, or TPS62261TDRVRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 2 qualification (–40°C to +105°C), voltage positioning at light loads, 100% duty cycle low-dropout operation, and compatibility with 2.2 μH inductors and 0603-size ceramic capacitors in space-constrained automotive PCB layouts.
Technical Context
The TPS62261TDRVRQ1 employs voltage-mode control with input voltage feed-forward for fast line/load regulation and uses internal high-side (240–480 mΩ) and low-side (185–380 mΩ) MOSFETs in a synchronous buck topology. Its 2.25 MHz fixed-frequency PWM operation transitions automatically to PFM mode below ~10 mA load when MODE = GND, enabling high efficiency across 0.01–600 mA output range.
Dynamic voltage positioning raises the regulated output by +1% in PFM mode to minimize transient undershoot during load steps; undervoltage lockout activates at 1.85 V (falling) to protect battery cells. The device supports 100% duty cycle operation down to VIN ≈ VOUT + IO×(RDS(on)HS + RDCR), extending usable battery voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.5% in PWM mode; ±1% accuracy with voltage positioning active in PFM mode |
| Max Output Current | 600 mA at VIN ≥ 2.5 V; derated to 300 mA at 2.3–2.5 V and 150 mA at 2–2.3 V |
| Switching Frequency | 2.25 MHz fixed (±12.5%), enabling compact 2.2 μH inductor and 0603 MLCC solution |
| Quiescent Current | 15 μA typical in PFM mode (MODE = GND, no switching); 3.8 mA in forced PWM mode |
| Input Voltage Range | 2 V to 6 V - supports single-cell Li-ion (2.7–4.2 V), extended-range Li-ion (2–4.5 V), and dual/triple alkaline rails |
| Shutdown Current | <1 μA at EN = GND, ensuring minimal battery drain in vehicle sleep modes |
| Operating Temp Range | –40°C to +105°C ambient (AEC-Q100 Grade 2 qualified), junction max 125°C |
Pinout & Package
TPS62261TDRVRQ1 is housed in a thermally enhanced 2 mm × 2 mm × 0.8 mm SON-6 package (DRV) with exposed thermal pad. Pin 1 (SW) connects to external inductor; Pin 2 (MODE) selects PFM/PWM operation; Pin 3 (FB) is internally tied to 1.8 V divider and not accessible; Pins 4–6 are EN, VIN, and GND respectively.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pin 1) | Switch node | Connects to inductor; carries high di/dt pulsed current; requires tight layout and Kelvin connection to minimize EMI |
| MODE (Pin 2) | Mode control input | GND enables automatic PFM↔PWM transition; VIN forces fixed-frequency PWM for noise-sensitive applications |
| FB (Pin 3) | Feedback input | Internally connected to fixed 1.8 V resistor divider; must be left unconnected or tied to VOUT per datasheet |
| EN (Pin 4) | Enable input | Active-high logic; pull high to enable; pull low to achieve <1 μA shutdown current |
| VIN (Pin 5) | Power input | Accepts 2–6 V; requires local 4.7 μF 0603 ceramic capacitor placed within 2 mm of pin |
| GND (Pin 6) | Power ground | Primary return path; must be connected to exposed thermal pad for thermal performance and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 (–40°C to +105°C ambient), qualified for infotainment, body control, and ADAS power rails |
| Voltage positioning | +1% output offset in PFM mode reduces load-step undershoot by providing headroom before regulation recovery |
| 100% duty cycle operation | Enables dropout as low as IO × (RDS(on)HS + RDCR), maximizing runtime from depleted Li-ion cells (e.g., down to 2.1 V) |
| Soft-start timing | 250 μs ramp time (5%→95% VOUT) limits inrush current into 10 μF output capacitor, preventing input rail sag |
| Thermal protection | 140°C junction shutdown with 20°C hysteresis prevents damage during sustained overload or poor heatsinking |
Applications
| Infotainment Display Power | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Powers 1.8 V I/O and core rails for LCD driver ICs and touch controllers in automotive center-stack displays. IC Role / Device Role / Timing Role: Primary point-of-load regulator converting 3.3 V or 5 V system rail to stable 1.8 V with <1.5% accuracy and low ripple. Use Value: 2.25 MHz switching avoids AM radio band interference; 15 μA quiescent current extends display-off battery life in parked vehicle mode. |
Use Scenario: Supplies 1.8 V to image signal processors (ISPs) and MIPI CSI-2 transceivers in rear-view and surround-view camera systems. IC Role / Device Role / Timing Role: High-efficiency buck converter supporting dynamic load steps from idle (100 μA) to streaming (400 mA) without output collapse. Use Value: Voltage positioning minimizes ISP brownout during frame capture bursts; AEC-Q100 qualification ensures reliability under engine-bay thermal cycling. |
| Body Control Unit Core Logic | Telematics MCU Power |
|
Use Scenario: Provides 1.8 V core voltage for 32-bit ARM-based microcontrollers managing door locks, lighting, and HVAC in body control modules. IC Role / Device Role / Timing Role: Always-on regulator maintaining MCU core supply during vehicle sleep/wake transitions with ultra-low shutdown current. Use Value: <1 μA shutdown current meets UCI (Ultra-Low Current Idle) requirements; 2 mm × 2 mm footprint saves PCB area in dense BCM layouts. |
Use Scenario: Powers 1.8 V I/O banks of LTE/5G modems and GNSS receivers in automotive telematics control units (TCUs). IC Role / Device Role / Timing Role: Low-noise, high-PWM-stability regulator supporting RF-sensitive analog front-ends and high-speed serial interfaces. Use Value: Forced PWM mode (MODE = VIN) eliminates PFM frequency variation, simplifying EMI filtering for cellular band compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260TDRVRQ1 | Adjustable output (0.6 V to VIN) via external FB resistors; identical pinout, specs, and qualification | Required where multiple output voltages are needed on same PCB or future voltage flexibility is desired | Select when design requires programmable VOUT or shared layout with other TPS6226x variants |
| TPS62262TDRVRQ1 | Fixed 1.2 V output; otherwise identical electrical specs, package, and automotive qualification | Used for lower-voltage MCU cores or FPGAs requiring 1.2 V supply with same efficiency profile | Choose for 1.2 V rail generation where TPS62261TDRVRQ1's 1.8 V is incompatible with downstream logic |
Compared with TPS62260TDRVRQ1 and TPS62262TDRVRQ1, the TPS62261TDRVRQ1 provides optimal balance of I/O compatibility (1.8 V matches common interface standards like SDIO, eMMC, and LPDDR2 I/O), efficiency across automotive temperature extremes, and footprint reuse - making it the preferred choice for display and imaging subsystems.
Availability
TPS62261TDRVRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and body control unit designs requiring stable component supply with AEC-Q100 compliance and long-term production continuity.
Supply support for TPS62261TDRVRQ1 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 TPS6226x family was designed specifically for space-constrained, battery-powered automotive applications demanding high efficiency across wide load ranges, robust thermal performance, and AEC-Q100 reliability - targeting infotainment, ADAS, and domain controller power rails.
FAQ
What is the output voltage tolerance of the TPS62261TDRVRQ1 in PWM mode?
The TPS62261TDRVRQ1 delivers a fixed 1.8 V output with ±1.5% accuracy in PWM mode across full operating conditions (–40°C to +105°C, 2 V ≤ VIN ≤ 6 V, 0–600 mA load). This specification is guaranteed in production testing and applies to both nominal and worst-case scenarios defined in the datasheet's Electrical Characteristics table.
Can the TPS62261TDRVRQ1 operate with input voltage below 2 V?
No - the absolute maximum rating specifies –0.3 V to 7 V input, but the recommended operating minimum is 2 V. Below 2 V, the TPS62261TDRVRQ1 enters undervoltage lockout (UVLO) and disables switching. The UVLO threshold is 1.85 V (falling), so operation ceases before reaching 2 V, protecting battery cells from over-discharge.
How does the MODE pin affect efficiency and noise performance of the TPS62261TDRVRQ1?
When MODE = GND, the TPS62261TDRVRQ1 enters Power Save Mode (PFM) at light loads (<10 mA), achieving 15 μA quiescent current and >85% efficiency at 100 μA. When MODE = VIN, it remains in fixed 2.25 MHz PWM mode, increasing light-load quiescent current to 3.8 mA but eliminating PFM frequency variation - critical for meeting conducted EMI limits in RF-sensitive automotive modules.
Is the TPS62261TDRVRQ1 pin-compatible with other devices in the TPS6226x-Q1 family?
Yes - all TPS6226x-Q1 variants (TPS62260/1/2/3TDRVRQ1) share identical 2 mm × 2 mm SON-6 (DRV) package, pinout, and footprint. The only differences are output voltage (fixed 1.8 V for TPS62261TDRVRQ1) and internal FB divider configuration; no PCB redesign is needed when substituting within the family.
What thermal derating applies to the TPS62261TDRVRQ1 at 105°C ambient?
At TA = 105°C, the TPS62261TDRVRQ1's power dissipation is limited by its DRV package RθJA of 76°C/W. With 1300 mW maximum power rating at TA ≤ 25°C and 13 mW/°C derating, usable power drops to 1300 mW − (13 mW/°C × 80°C) = 260 mW. This corresponds to ~350 mA at 1.8 V output with typical losses - consistent with datasheet's 300 mA limit at VIN = 2.5 V in high-temp conditions.
TPS62261TDRVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS62261TDRVRQ1 FAQ
1.How can I place an order for TPS62261TDRVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62261TDRVRQ1 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 TPS62261TDRVRQ1 reliable?
The price and inventory of TPS62261TDRVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62261TDRVRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62261TDRVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62261TDRVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62261TDRVRQ1?
TPS62261TDRVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62261TDRVRQ1 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 TPS62261TDRVRQ1?
For technical support, including TPS62261TDRVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62261TDRVRQ1 requirements.
6.How does Aetrix verify that TPS62261TDRVRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62261TDRVRQ1 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 TPS62261TDRVRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62261TDRVRQ1?
All TPS62261TDRVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62261TDRVRQ1, 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 TPS62261TDRVRQ1 part is unused and in its original packaging.
Return procedure for TPS62261TDRVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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