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Texas Instruments TPS62590DRVT
- Part No.:
- TPS62590DRVT
- Manufacturer:
- Texas Instruments
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS62590DRVT.pdf
- Description:
- IC REG BUCK ADJ 1A 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:861
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Product details
Overview
TPS62590DRVT from Texas Instruments is a synchronous step-down DC-DC converter delivering up to 1000 mA output current, operating from 2.5 V to 5.5 V input, with adjustable output voltage (0.75 V to VIN), 2.25-MHz fixed switching frequency, and integrated high- and low-side MOSFETs - used in mobile phone power rails and point-of-load regulation.
For engineers reviewing the TPS62590DRVT datasheet, TPS62590DRVT pinout, TPS62590DRVT application, or TPS62590DRVT equivalent, key selection considerations include its 15-μA quiescent current in PFM mode, 100% duty cycle capability for ultra-low dropout, ±2.5% output voltage accuracy in PWM mode, and WSON-6 package thermal performance (RθJA = 67.8°C/W).
Technical Context
The TPS62590DRVT implements a voltage-mode control architecture with input voltage feed-forward, enabling fast line/load transient response and stable operation with small ceramic capacitors. Its dual-mode operation-automatic transition between 2.25-MHz PWM and light-load PFM-optimizes efficiency across 0.001 A to 1 A output range.
Internal circuitry includes undervoltage lockout (1.85 V falling threshold), thermal shutdown (140°C trip), dynamic voltage positioning (+1% nominal in PFM), and soft-start (250 μs ramp time). The MODE pin selects between forced PWM (low noise) and automatic PFM/PWM (high efficiency), while EN enables/disables the device with <0.5 μA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 5.5 V - supports single Li-ion, AA/AAA, and USB-powered systems without external LDO pre-regulation. |
| Output Current | Up to 1000 mA - sufficient for powering baseband processors, RF transceivers, or memory subsystems in portable devices. |
| Switching Frequency | 2.25 MHz - enables use of compact 2.2 μH inductors and 10 μF ceramic capacitors, minimizing solution footprint. |
| Quiescent Current | 15 μA (PFM mode) - extends battery life in standby/sleep states of smartphones and tablets. |
| Output Voltage Accuracy | ±2.5% in PWM mode - ensures reliable logic-level compliance for 1.8 V or 3.3 V digital loads. |
| Duty Cycle Capability | 100% - maintains regulation down to VIN ≈ VOUT, maximizing usable battery voltage range (e.g., discharging Li-ion from 4.2 V to 2.8 V). |
| Thermal Resistance | RθJA = 67.8°C/W - allows >600 mA continuous output at 85°C ambient with standard PCB copper area. |
Pinout & Package
TPS62590DRVT is housed in a thermally enhanced 2.0 mm × 2.0 mm × 0.8 mm WSON-6 package with an exposed thermal pad soldered to PCB ground for optimal heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switch node | Connects internal high- and low-side MOSFETs to external inductor; carries high di/dt pulses - requires tight layout and Kelvin connection to minimize EMI. |
| VIN | Power input | Supplies internal circuitry and power switches; requires local 10 μF ceramic decoupling placed within 3 mm of pin. |
| GND | Ground reference | Return path for power and signal circuits; must be connected directly to exposed thermal pad for thermal and electrical integrity. |
| FB | Feedback input | Senses output voltage via external resistor divider; open for fixed-output variants, but adjustable here for custom VOUT (e.g., 1.8 V using 360 kΩ/180 kΩ). |
| EN | Enable control | Active-high logic input; pulling low disables converter and reduces input current to <0.5 μA - used for system power sequencing. |
| MODE | Operation mode select | Low = auto PFM/PWM (efficiency-optimized); high = forced PWM (fixed 2.25 MHz, lower ripple, easier filtering). |
Key Features
| Feature | Design Value |
|---|---|
| Dynamic Voltage Positioning | Maintains +1% output offset in PFM mode to absorb load-step transients without undershoot, improving stability in burst-mode operation. |
| 100% Duty Cycle Operation | Enables dropout as low as IOUT × RDS(on) + IOUT × RL, extending runtime in battery-powered systems by utilizing full cell voltage range. |
| Integrated Power MOSFETs | 250 mΩ high-side and 190 mΩ low-side RDS(on) reduce conduction losses and eliminate need for external switches or gate drivers. |
| Soft-Start Ramp | 250 μs output voltage rise (5% to 95%) limits inrush current and prevents input rail collapse during startup from weak sources like coin cells. |
| Thermal Shutdown Protection | 140°C junction trip with 20°C hysteresis prevents damage during overload or poor heatsinking - automatically recovers when temperature falls below 120°C. |
Applications
| Mobile Phone Core Rail | Tablet SoC I/O Supply |
|---|---|
Use Scenario: Powers application processor I/O domain requiring stable 1.8 V at up to 800 mA during camera capture or display refresh. IC Role / Device Role / Timing Role: Primary buck regulator providing dynamically scaled voltage with fast transient response to handle burst current demands. Use Value: 2.25-MHz switching and voltage-mode control deliver <50 mV output deviation during 500 mA load steps, reducing need for oversized bulk capacitance. | Use Scenario: Supplies Wi-Fi/BT combo chip in tablet PC with tight noise requirements and variable 3.0–3.3 V output. IC Role / Device Role / Timing Role: Adjustable POL converter configured for 3.3 V with MODE pin tied to VIN to enforce fixed-frequency PWM for EMI filtering. Use Value: ±2.5% output accuracy and 15-μA quiescent current ensure RF sensitivity is preserved while extending standby battery life beyond 7 days. |
| WLAN Module Power | Low-Power DSP Supply |
Use Scenario: Powers IEEE 802.11n WLAN baseband IC in handheld medical scanner with strict thermal limits. IC Role / Device Role / Timing Role: High-efficiency step-down converter operating in PFM mode during idle, transitioning to PWM during packet transmission bursts. Use Value: RθJA = 67.8°C/W and exposed thermal pad enable 650 mA continuous output at 70°C ambient without derating or heatsink. | Use Scenario: Delivers 1.2 V to voice-processing DSP in hearing aid with coin-cell battery (3 V nominal). IC Role / Device Role / Timing Role: Ultra-low-IQ buck converter supporting 100 μA to 300 mA load range while maintaining regulation down to 2.5 V input. Use Value: 100% duty cycle capability sustains 1.2 V output until battery reaches 1.3 V above VOUT, extracting ~12% more usable energy versus non-dropout regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62290DRVR | Higher 3-MHz switching frequency; 1.2-A output rating; same WSON-6 package and pinout. | Better suited for space-constrained designs needing higher current or faster transient response. | Select TPS62290DRVR when >1 A load or <100 ns load-step recovery is required; otherwise TPS62590DRVT offers lower cost and adequate performance. |
| MP2158GQZ-P | 2.2-MHz frequency; 1-A rating; different pinout (EN/FB swapped); no dynamic voltage positioning feature. | Requires PCB redesign; lacks PFM-mode voltage positioning, increasing risk of load-step undershoot. | Choose MP2158GQZ-P only if TI supply constraints exist; verify layout compatibility and validate transient response with external compensation. |
Compared with TPS62290DRVR, the TPS62590DRVT trades peak current and frequency for lower BOM cost and proven integration in legacy mobile designs; versus MP2158GQZ-P, it provides superior light-load regulation stability and pin-compatible upgrade path without layout changes.
Availability
TPS62590DRVT is available at Aetrix Electronics and suitable for mobile phones, tablet PCs, WLAN modules, and point-of-load (POL) applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62590DRVT 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 decades of expertise in high-efficiency DC-DC conversion for portable electronics.
The TPS62590DRVT belongs to TI's NanoPower family of step-down converters, engineered specifically for battery-powered handheld devices where ultra-low quiescent current, small solution size, and seamless light-to-heavy load efficiency transitions are critical design requirements.
FAQ
What is the maximum output current capability of the TPS62590DRVT under typical conditions?
The TPS62590DRVT delivers up to 1000 mA output current when VIN ≥ 2.7 V, and up to 600 mA when VIN is between 2.5 V and 2.7 V. This is specified in the Recommended Operating Conditions table of the datasheet (SLVS897C, Section 6.3). Performance depends on thermal management: with proper PCB copper area and the exposed thermal pad soldered to GND, the device sustains 1000 mA continuously at 85°C ambient. The TPS62590DRVT integrates both high- and low-side MOSFETs, eliminating external switch losses that would otherwise limit current in discrete solutions.
How does the MODE pin affect efficiency and noise performance in the TPS62590DRVT?
When the MODE pin is pulled low (to GND), the TPS62590DRVT enters power-save mode, automatically switching between PFM and PWM to maintain >85% efficiency down to 100 μA load - ideal for battery standby. When MODE is pulled high (to VIN), it forces fixed 2.25-MHz PWM operation, which increases light-load quiescent current to ~3.8 mA but delivers lower output voltage ripple and predictable EMI spectrum for noise-sensitive RF sections. The TPS62590DRVT's MODE pin can be toggled dynamically during operation to balance efficiency and spectral purity per system state.
Can the TPS62590DRVT operate with an input voltage as low as 2.5 V while regulating a 1.8 V output?
Yes, the TPS62590DRVT supports 100% duty cycle operation, allowing it to regulate 1.8 V output even when VIN drops to ~1.95 V (accounting for RDS(on) and inductor DCR losses). At VIN = 2.5 V, the TPS62590DRVT maintains full 1000 mA output capability with typical 92% efficiency. This capability is confirmed in the "100% Duty Cycle Low Dropout Operation" section (7.4.3) of the datasheet, where Equation 1 calculates minimum input voltage based on load, RDS(on), and inductor resistance - making the TPS62590DRVT especially valuable in single-cell Li-ion systems discharging from 4.2 V to 2.8 V.
What are the recommended external components for a standard 1.8 V application using the TPS62590DRVT?
For a 1.8 V adjustable output, use R1 = 360 kΩ and R2 = 180 kΩ to set FB voltage to 0.6 V (VOUT = 0.6 V × (1 + R1/R2)). Pair with a 2.2 μH shielded inductor (e.g., Coilcraft LPS3015), 10 μF X5R ceramic input capacitor (Murata GRM188R60J106M), 10 μF X5R ceramic output capacitor, and a 22 pF COG feedforward capacitor (C1) from FB to GND. All components are validated in the Typical Application Schematic (Figure 6) and Table 3 of the TPS62590DRVT datasheet. Layout must connect the exposed thermal pad directly to a solid GND plane.
Does the TPS62590DRVT include protection features, and how do they function?
Yes, the TPS62590DRVT integrates undervoltage lockout (UVLO, 1.85 V falling threshold), thermal shutdown (140°C trip with 20°C hysteresis), and overcurrent protection via high- and low-side MOSFET current limit comparators (ILIMF = 1.19–1.68 A). UVLO prevents malfunction during battery brownout; thermal shutdown disables both FETs until junction cools; current limiting clamps peak inductor current to protect internal switches and external magnetics. These protections are fully autonomous - no external components required - and are documented in Sections 7.3.2, 7.3.5, and 7.4.4 of the TPS62590DRVT datasheet.
TPS62590DRVT 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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.75V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS62590DRVT FAQ
1.How can I place an order for TPS62590DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62590DRVT 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 TPS62590DRVT reliable?
The price and inventory of TPS62590DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62590DRVT is usually 5 days.
3.What payment methods are accepted for TPS62590DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62590DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62590DRVT?
TPS62590DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62590DRVT 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 TPS62590DRVT?
For technical support, including TPS62590DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62590DRVT requirements.
6.How does Aetrix verify that TPS62590DRVT is sourced from the original manufacturer or authorized distributors?
All TPS62590DRVT 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 TPS62590DRVT meets industry standards.
7.What is the process for return or replacement of TPS62590DRVT?
All TPS62590DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS62590DRVT, 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 TPS62590DRVT part is unused and in its original packaging.
Return procedure for TPS62590DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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