My Inquiry
My Account
Texas Instruments TPS62901RPJR
- Part No.:
- TPS62901RPJR
- Manufacturer:
- Texas Instruments
- Package:
- 9-VFQFN
- Datasheet:
-
TPS62901RPJR.pdf
- Description:
- IC REG BUCK ADJ 1A 9VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,771
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62901RPJR from Texas Instruments is a synchronous step-down DC-DC converter optimized for high efficiency and ultra-low quiescent current in space-constrained applications. It delivers up to 1A continuous output, supports 3V–17V input, provides ±0.9% VFB accuracy across –40°C to 150°C, and features DCS-Control™ topology with selectable 1.0MHz/2.5MHz switching frequency - used in industrial power rails, motor drive bias supplies, and notebook core voltage regulation.
For engineers reviewing the TPS62901RPJR datasheet, TPS62901RPJR pinout, TPS62901RPJR application, or TPS62901RPJR equivalent, key selection considerations include its 4µA typical IQ in power-save mode, 1.5mm × 2.0mm VQFN-HR (RPJ) package with 0.5mm pitch, MODE/S-CONF configurable operation (AEE, forced PWM, VSET/FB), integrated power-good output, and absence of external bootstrap capacitor requirement.
Technical Context
The TPS62901RPJR implements DCS-Control™ topology, combining fast transient response via direct control of output voltage changes with stable DC regulation using an internal voltage feedback loop and seamless transition between PWM and power-save modes. Its predictive off-time modulation enables Automatic Efficiency Enhancement (AEE) across wide VIN/VOUT/load ranges without compromising ripple current or stability.
It integrates dual MOSFETs with 62mΩ high-side and 22mΩ low-side RDS(ON), supports both external FB divider (0.6V–5.5V) and internal VSET configuration (16 fixed outputs from 0.4V–5.5V), and uses SmartConfig™ on MODE/S-CONF to configure switching frequency, discharge behavior, and operating mode during startup - all without requiring external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 17V - supports 5V, 12V rails, single/multi-cell Li-ion, and 3.3V systems without external pre-regulation. |
| Output Current | Up to 1A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor signal chains. |
| Quiescent Current | 4µA typical in power-save mode - enables >1-year battery life in always-on industrial sensors. |
| Feedback Accuracy | ±0.9% over –40°C to 150°C - ensures reliable regulation in automotive under-hood and factory automation environments. |
| Switching Frequency | Selectable 1.0MHz or 2.5MHz - allows optimization between small inductor size (2.5MHz) and EMI filtering ease (1.0MHz). |
| RDS(ON) | 62mΩ HS / 22mΩ LS - minimizes conduction loss at full load, supporting >92% peak efficiency at 12V→3.3V/1A. |
| Package | 9-pin VQFN-HR (RPJ), 1.5mm × 2.0mm, 0.5mm pitch - enables single-layer PCB routing and <30mm² total solution area. |
Pinout & Package
TPS62901RPJR is housed in a 9-pin VQFN-HR (RPJ) package measuring 1.50mm × 2.00mm with 0.5mm pitch. The exposed thermal pad must be soldered to a PCB copper pour for thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Open-drain power-good indicator | Signals VOUT regulation status; requires external pullup; used for rail sequencing in multi-voltage systems. |
| 2 - SW | Switch node | Connects internal HS/LS FETs to external inductor; critical for EMI layout and thermal path. |
| 3 - VOS | Output voltage sense | Direct connection to output capacitor positive terminal enables accurate remote sensing and eliminates FB trace errors. |
| 4 - GND | Power ground | Must connect directly to low-impedance PCB ground plane; shares thermal pad for heat dissipation. |
| 5 - EN | Enable input | Precise threshold (0.9–1.03V) allows RC-delayed startup or undervoltage lockout via resistor divider. |
| 6 - VIN | Input supply | Requires local 3–10µF ceramic capacitor placed adjacent to pin to suppress high-frequency noise. |
| 7 - MODE/S-CONF | SmartConfig™ configuration | Determines switching frequency, FB/VSET mode, discharge enable, and PFM/PWM behavior via resistor or logic level. |
| 8 - SS/TR | Soft-start/tracking | External capacitor sets ramp time; also accepts external voltage for synchronized power-up with master rail. |
| 9 - FB/VSET | Feedback or voltage set | Configurable as FB input (external divider) or VSET pin (resistor-to-GND for 16 fixed outputs). |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Enables <100µs load transient response with no external compensation, ideal for dynamic FPGA/core loads. |
| Automatic Efficiency Enhancement (AEE) | Adaptively adjusts switching frequency to maintain >85% efficiency from 10µA to 1A across 3V–17V input range. |
| No external bootstrap capacitor | Reduces BOM count and board area; simplifies layout by eliminating high-side gate-drive support components. |
| 100% duty cycle mode | Allows dropout operation down to VIN – VOUT ≈ 200mV, supporting low-VOUT regulation from near-input voltages. |
| Adjustable active output discharge | Configurable via MODE/S-CONF to rapidly discharge VOUT on shutdown - prevents back-powering of downstream circuitry. |
Applications
| Industrial Motor Drives | Factory Automation Controllers |
|---|---|
Use Scenario: Powering gate drivers and isolated ADCs in servo inverters with 12V bus input. IC Role / Device Role / Timing Role: Primary 5V/3.3V bias rail regulator delivering clean, sequenced power with PG signaling. Use Value: 4µA IQ extends standby runtime; ±0.9% accuracy ensures ADC reference stability; 150°C junction rating supports enclosed enclosures. | Use Scenario: Supplying PLC I/O modules and real-time Ethernet PHYs in harsh factory environments. IC Role / Device Role / Timing Role: Compact, high-reliability point-of-load converter for 3.3V/1.8V logic rails. Use Value: 1.5mm × 2.0mm RPJ package fits dense backplane layouts; DCS-Control™ handles rapid load steps from communication bursts. |
| Enterprise SSD Power Management | Notebook Core Voltage Regulation |
Use Scenario: Regulating NVMe controller and NAND flash VCCQ (1.8V) and VPP (3.3V) rails from 5V or 12V source. IC Role / Device Role / Timing Role: Dual-rail POL converter with independent soft-start and tracking capability. Use Value: SS/TR pin enables precise power-up sequencing to meet JEDEC SSD timing specs; AEE maintains efficiency during bursty NAND access. | Use Scenario: Providing adaptive core voltage (0.8V–1.35V) to Intel/AMD mobile CPUs from 12V or 3S Li-ion battery. IC Role / Device Role / Timing Role: High-efficiency buck converter with VSET configuration and forced PWM for low-noise operation. Use Value: 16 VSET options eliminate external resistors; 2.5MHz operation enables ≤1µH inductors, reducing solution height to <1.2mm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62903RPJR | Same RPJ package and pinout; adds integrated 2-A switch with higher RDS(ON) (75mΩ/30mΩ); identical AEE/DCS-Control architecture. | Supports higher output current (2A vs 1A); suitable where future-proofing or margin is required. | Select TPS62903RPJR if >1A load headroom is needed; same layout and firmware integration. |
| MP2174GQZ-P | Monolithic 1A buck in 2mm × 2mm QFN; 4.5–18V input; 15µA IQ; fixed 2.2MHz fSW; no VSET or AEE. | Lacks SmartConfig™ flexibility and ultra-low IQ; simpler configuration but less adaptive efficiency. | Choose MP2174GQZ-P for cost-sensitive, fixed-output designs where 4µA IQ and AEE are not required. |
Compared with TPS62901RPJR, TPS62903RPJR offers higher current capability in identical footprint, while MP2174GQZ-P trades configurability and ultra-low IQ for lower unit cost and simpler implementation - making TPS62901RPJR optimal for thermally constrained, battery-sensitive, or multi-rail industrial designs.
Availability
TPS62901RPJR is available at Aetrix Electronics and suitable for factory automation controllers, enterprise SSD power rails, and notebook core voltage regulation requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for TPS62901RPJR 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and industrial-grade reliability.
The TPS6290x family was designed specifically for space-constrained, high-efficiency point-of-load applications demanding ultra-low IQ, wide input range, and flexible configuration - targeting industrial, computing, and portable electronics markets.
FAQ
What is the maximum junction temperature specification for the TPS62901RPJR?
The TPS62901RPJR has a maximum junction temperature (TJ) rating of 150°C, with thermal shutdown triggered at 170°C and 20°C hysteresis. This enables reliable operation in sealed enclosures and high-ambient industrial environments. The device's RθJA of 97.2°C/W on JEDEC PCB allows sustained 1A output at ambient temperatures up to 75°C with standard 2-layer board layout - verified in TI's TPS6290xEVM-069 reference design.
Does the TPS62901RPJR require an external bootstrap capacitor?
No, the TPS62901RPJR does not require an external bootstrap capacitor. Its integrated gate driver architecture eliminates this component, reducing BOM count, PCB area, and layout complexity. This design choice is confirmed in Section 1 Features and Figure 6-2 of the official datasheet SLVSFS7A, and applies specifically to the TPS62901RPJR variant - unlike many competing buck converters that mandate external bootstrap networks.
How does the MODE/S-CONF pin configure output voltage on the TPS62901RPJR?
The MODE/S-CONF pin on the TPS62901RPJR determines whether FB/VSET operates as a feedback input (external resistor divider) or VSET pin (internal divider with 16 fixed outputs). When configured via resistor (e.g., 7.15kΩ), it selects both VSET option and switching frequency - per Table 6-1 and Table 6-2 in the datasheet. This SmartConfig™ function is exclusive to the TPS62901RPJR and enables single-resistor programming without firmware or additional logic.
What is the purpose of the VOS pin on the TPS62901RPJR?
On the TPS62901RPJR, the VOS (Voltage Output Sense) pin provides Kelvin sensing of the output voltage by connecting directly to the positive terminal of the output capacitor. This eliminates IR drop errors from PCB traces, ensuring ±0.9% regulation accuracy across temperature and load - especially critical in high-precision applications like data converter biasing. VOS is mandatory when using VSET configuration and optional but recommended for FB mode.
Can the TPS62901RPJR operate in 100% duty cycle mode?
Yes, the TPS62901RPJR supports 100% duty cycle operation, allowing VOUT to track VIN minus minimal dropout (≈200mV at light load). This feature is explicitly documented in Section 1 Features and enables use cases such as post-regulation from a closely matched input source or low-dropout operation in battery-powered systems. It is enabled automatically when VOUT approaches VIN, without requiring external control signals.
TPS62901RPJR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 9-VFQFN
- 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):
- 3V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.4V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1A
- Frequency - Switching:
- 1MHz, 2.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-VQFN-HR (1.5x2)
TPS62901RPJR FAQ
1.How can I place an order for TPS62901RPJR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62901RPJR 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 TPS62901RPJR reliable?
The price and inventory of TPS62901RPJR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62901RPJR is usually 5 days.
3.What payment methods are accepted for TPS62901RPJR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62901RPJR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62901RPJR?
TPS62901RPJR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62901RPJR 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 TPS62901RPJR?
For technical support, including TPS62901RPJR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62901RPJR requirements.
6.How does Aetrix verify that TPS62901RPJR is sourced from the original manufacturer or authorized distributors?
All TPS62901RPJR 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 TPS62901RPJR meets industry standards.
7.What is the process for return or replacement of TPS62901RPJR?
All TPS62901RPJR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62901RPJR, 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 TPS62901RPJR part is unused and in its original packaging.
Return procedure for TPS62901RPJR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62901RPJR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
