My Inquiry
My Account
Texas Instruments TPS62091RGTR
- Part No.:
- TPS62091RGTR
- Manufacturer:
- Texas Instruments
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
TPS62091RGTR.pdf
- Description:
- IC REG BUCK 3.3V 3A 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,488
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS62091RGTR from Texas Instruments is a 3-A synchronous step-down DC/DC converter with fixed 3.3 V output, DCS-Control™ topology, 2.5 V to 6 V input range, and 2.8 MHz/1.4 MHz selectable switching frequency-designed for processor core and I/O rail regulation in space-constrained battery-powered systems.
For engineers reviewing the TPS62091RGTR datasheet, TPS62091RGTR pinout, TPS62091RGTR application, or TPS62091RGTR equivalent, key selection considerations include its 20 µA quiescent current in power save mode, hiccup-mode short-circuit protection, adjustable softstart via external capacitor, output discharge function, and compatibility with 10 µF–150 µF output capacitors.
Technical Context
The TPS62091RGTR implements DCS-Control™-a hybrid regulation architecture combining voltage-mode stability with hysteretic-like transient response-enabling seamless PWM-to-power-save-mode transition without output disturbance. It uses an internal 0.8 V reference and supports output voltage tracking via the SS pin with 1.56× scaling ratio.
Its dual-frequency operation (2.8 MHz default, 1.4 MHz when FREQ = high) directly modulates on-time in PFM mode; the charge pump (CP/CN pins + 10 nF capacitor) enables efficient gate drive for both high- and low-side MOSFETs, while the VOS pin provides output voltage sensing and controlled discharge through a 200 Ω internal resistor during shutdown.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±1.4% (PWM mode, 1 A load), enabling direct replacement of LDOs in noise-sensitive digital rails. |
| Input Voltage Range | 2.5 V to 6 V-supports single-cell Li-ion, dual-cell NiMH, and 3.3 V/5 V system rails without external pre-regulation. |
| Max Output Current | 3 A continuous-sufficient for modern SoCs, FPGAs, and SSD controllers with dynamic load steps up to 2 A/µs. |
| Switching Frequency | 2.8 MHz (FREQ = GND) or 1.4 MHz (FREQ = VIN)-higher frequency allows <1 µH inductors and <22 µF ceramic output caps for ultra-compact layouts. |
| Quiescent Current | 20 µA in power save mode-extends battery runtime in always-on subsystems like RTC, sensors, or wake-on-LAN circuits. |
| Feedback Reference | 0.8 V internal reference-simplifies compensation design and ensures tight regulation across temperature and line/load variations. |
| Protection Features | Hiccup-mode overcurrent, thermal shutdown (150°C), UVLO (2.2 V threshold), and output discharge-eliminates need for external fault-handling circuitry. |
Pinout & Package
TPS62091RGTR is housed in a thermally enhanced 3.0 mm × 3.0 mm, 16-pin QFN package (RGTR) with exposed thermal pad soldered to AGND for optimal thermal performance (RθJA = 47°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 SW | Power switch node | Connects to inductor and high-side/low-side MOSFET drains-requires low-inductance layout to minimize EMI and switching losses. |
| 3 FREQ | Frequency select input | Logic-level control: GND = 2.8 MHz, VIN = 1.4 MHz-internal 400 kΩ pull-down enables default high-frequency operation. |
| 4 PG | Open-drain power good | Signals regulation status (high-Z when VOUT ≥95% nominal); requires external pull-up ≤VIN for sequencing or system monitoring. |
| 5 FB | Feedback input | Internally tied to 0.8 V reference for fixed-output versions-connect to GND for improved thermal performance per datasheet guidance. |
| 6 AGND | Analog ground | Reference for feedback, softstart, and control circuitry-must be separated from PGND and connected to thermal pad. |
| 7 CP / 8 CN | Charge pump terminals | Interface external 10 nF flying capacitor to generate gate drive voltage-critical for MOSFET turn-on efficiency at low VIN. |
| 9 SS | Softstart/voltage tracking | Controls startup ramp time (via external cap) or enables ratiometric tracking of other rails-voltage scaled 1.56× to internal reference. |
| 10 AVIN | Bias supply input | Powers internal analog circuitry-must be connected to same source as PVIN or filtered version to avoid noise coupling. |
| 11, 12 PVIN | Main power input | High-current path for input supply-requires local 10 µF ceramic decoupling close to pins 11/12 and thermal pad. |
| 13 EN | Enable input | Active-high logic control with 400 kΩ internal pull-down-assert high to enable, low to disable with 0.6 µA shutdown current. |
| 14, 15 PGND | Power ground | Return path for high-current switch node-must be solid copper plane tied to thermal pad and isolated from AGND at single point. |
| 16 VOS | Output voltage sense | Direct connection to regulated output-enables accurate remote sensing and activates 200 Ω discharge path during shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| DCS-Control™ topology | Delivers <1% load transient deviation with 20 µs recovery-ideal for burst-mode processors without external compensation. |
| Adjustable softstart | Capacitor-programmable startup time (e.g., 100 nF ≈ 13 ms) prevents inrush current damage to input caps and upstream converters. |
| Output voltage tracking | SS pin accepts external ramp to coordinate power-up/down sequencing with companion rails (e.g., DDR memory VDDQ/VDD). |
| 100% duty cycle operation | Maintains regulation down to VIN = VOUT + IOUT × (RDS(on) + RL)-extends usable battery voltage range by ~300 mV vs conventional buck controllers. |
| Integrated output discharge | 200 Ω internal resistor on VOS pin actively discharges output during disable-ensures safe restart and avoids latch-up in multi-rail systems. |
Applications
| Processor Core Supply | Solid State Drive (SSD) Power |
|---|---|
Use Scenario: Regulating 3.3 V I/O rail for ARM Cortex-A series SoCs with dynamic current ranging 10 mA–3 A during active states. IC Role / Device Role / Timing Role: Primary point-of-load converter delivering stable 3.3 V with <20 mV ripple under 2 A/µs load transients. Use Value: DCS-Control™ achieves sub-50 µs transient recovery-prevents logic errors during CPU frequency scaling and cache flushes. | Use Scenario: Powering NAND flash controller and DRAM buffer in M.2 NVMe SSDs with strict 100 ms power-up timing. IC Role / Device Role / Timing Role: Fixed-output buck supplying 3.3 V to interface logic, synchronized via SS pin to main 1.2 V core rail. Use Value: Adjustable softstart ensures controlled ramp within spec; hiccup protection prevents catastrophic failure during NAND write aborts. |
| Notebook System Rail | Battery-Powered IoT Hub |
Use Scenario: Generating 3.3 V for USB 3.0 PHY, PCIe endpoint, and display bridge ICs in ultrabook platforms. IC Role / Device Role / Timing Role: High-efficiency secondary regulator fed from 5 V system bus, operating in 2.8 MHz mode for minimal EMI near RF sections. Use Value: 95% peak efficiency at 2 A reduces thermal load on thin PCBs; PG signal enables BIOS-controlled power sequencing. | Use Scenario: Supplying 3.3 V to BLE/Wi-Fi SoC, environmental sensors, and secure element in portable asset trackers. IC Role / Device Role / Timing Role: Always-on power stage with 20 µA quiescent current, supporting 10-year battery life in deep-sleep modes. Use Value: Power save mode maintains >85% efficiency down to 100 µA load-eliminates need for discrete load switches or PMIC complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62093RGTR | Fixed 1.8 V output; identical pinout, package, and feature set except output voltage and FB pin configuration. | Targets low-voltage logic (e.g., DDR3 LVD, FPGA I/O) instead of 3.3 V interfaces; requires different feedback network if used in adjustable mode. | Select TPS62093RGTR only when 1.8 V output is required-no PCB change needed, but verify load transient response at lower VOUT. |
| TPS62130ARGTR | 3 A, 3–17 V input, 3.3 V fixed; uses voltage-mode control (not DCS-Control™), higher 3.5 µA IQ, no output discharge or SS tracking. | Better suited for wide-input industrial supplies; lacks softstart adjustability and rail coordination capability critical for portable designs. | Choose TPS62130ARGTR for non-battery applications where input exceeds 6 V or DCS-Control™ transient performance is not required. |
Compared with TPS62093RGTR, the TPS62091RGTR delivers higher output voltage for legacy 3.3 V interfaces but shares identical thermal, layout, and sequencing behavior. Against TPS62130ARGTR, it trades wider input range for superior light-load efficiency, faster transients, and integrated power management features essential in mobile electronics.
Availability
TPS62091RGTR is available at Aetrix Electronics and suitable for notebook computers, solid-state drives, and battery-powered IoT hubs requiring stable component supply with full production lifecycle support.
Supply support for TPS62091RGTR 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 50 years of innovation in high-efficiency DC/DC conversion.
The TPS6209x product line was engineered specifically for space-constrained, battery-operated devices demanding ultra-low quiescent current, fast transient response, and seamless power mode transitions-targeting next-generation portable computing and storage platforms.
FAQ
What is the recommended inductor value for TPS62091RGTR operating at 2.8 MHz?
The TPS62091RGTR datasheet specifies a 0.47 µH inductor for 2.8 MHz operation with 3.3 V output and 3 A load. This value balances peak current ripple (~30% of IOUT), core loss, and physical size-using a shielded power inductor rated for ≥4 A saturation current and ≤30 mΩ DCR ensures optimal efficiency and thermal performance across the full load range.
Does TPS62091RGTR require external compensation components?
No, the TPS62091RGTR does not require external compensation components. Its DCS-Control™ topology integrates all necessary compensation within the IC, enabling stable operation with standard 22 µF ceramic output capacitors and eliminating the need for loop compensation resistors or capacitors-reducing BOM count and layout complexity.
How does the output discharge function operate in TPS62091RGTR?
The TPS62091RGTR activates its internal 200 Ω discharge resistor between the VOS pin and AGND whenever the device is disabled, enters thermal shutdown, or triggers UVLO. This safely discharges the output capacitor to <100 mV within tens of milliseconds-preventing unintended re-powering or latch-up in multi-rail systems where downstream logic must reset cleanly.
Can TPS62091RGTR be used with input voltages below 2.5 V?
No, the TPS62091RGTR has a specified minimum input voltage of 2.5 V per absolute maximum and recommended operating conditions. Operation below this threshold risks UVLO activation, unstable regulation, or failure to start-especially under load. For sub-2.5 V inputs, consider TI's TPS6286x family or alternative architectures such as boost-buck hybrids.
What is the purpose of the CP and CN pins on TPS62091RGTR?
The CP and CN pins on the TPS62091RGTR form the terminals of an external flying capacitor (10 nF) that powers an integrated charge pump. This charge pump generates the gate drive voltage for the high-side MOSFET, enabling full enhancement even at low input voltages-critical for maintaining high efficiency and low dropout across the 2.5 V–6 V input range.
TPS62091RGTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DCS-Control™
- Package/Case:
- 16-VFQFN 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):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 3A
- Frequency - Switching:
- 2.8MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
TPS62091RGTR FAQ
1.How can I place an order for TPS62091RGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62091RGTR 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 TPS62091RGTR reliable?
The price and inventory of TPS62091RGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62091RGTR is usually 5 days.
3.What payment methods are accepted for TPS62091RGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62091RGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62091RGTR?
TPS62091RGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62091RGTR 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 TPS62091RGTR?
For technical support, including TPS62091RGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62091RGTR requirements.
6.How does Aetrix verify that TPS62091RGTR is sourced from the original manufacturer or authorized distributors?
All TPS62091RGTR 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 TPS62091RGTR meets industry standards.
7.What is the process for return or replacement of TPS62091RGTR?
All TPS62091RGTR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62091RGTR, 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 TPS62091RGTR part is unused and in its original packaging.
Return procedure for TPS62091RGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS62091RGTR 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…
