My Inquiry
My Account
Texas Instruments TPS61097A-33DBVR
- Part No.:
- TPS61097A-33DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TPS61097A-33DBVR.pdf
- Description:
- IC REG BOOST 3.3V 200MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:8,513
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61097A-33DBVR from Texas Instruments is a low-input-voltage synchronous boost converter optimized for single-cell battery systems. It delivers a fixed 3.3 V output from inputs as low as 0.9 V, supports up to 100 mA load current at 3.3 V, features <5 μA quiescent current and <5 nA shutdown current, and operates in a compact 5-pin SOT-23 (DBV) package. It enables power backup via integrated bypass switch in shutdown mode for MSP430 and medical sensor applications.
For engineers reviewing the TPS61097A-33DBVR datasheet, TPS61097A-33DBVR pinout, TPS61097A-33DBVR application, or TPS61097A-33DBVR equivalent, key selection criteria include ultra-low quiescent current, fixed 3.3 V output, input voltage down to 0.9 V, integrated bypass switch functionality, and thermal/overcurrent protection - all critical for energy-constrained portable and battery-backed systems.
Technical Context
The TPS61097A-33DBVR uses a hysteretic current-mode controller with constant 200 mA inductor ripple current, enabling automatic transition between continuous and discontinuous conduction modes to maintain high efficiency across load ranges. Its control logic integrates undervoltage lockout (0.6–0.8 V), overtemperature protection (150 °C trip, 20 °C hysteresis), and precise enable thresholding (VIH = 0.78–1.0 V, VIL = 0.58 V).
During operation, it employs two internal MOSFETs - a main switch and synchronous rectifier - with typical on-resistances of 1.0 Ω each. In shutdown, a dedicated P-channel bypass switch connects VIN directly to VOUT via the L pin, providing low-impedance battery-to-load path independent of UVLO or thermal events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±3% (ensures stable supply for 3.3 V logic, ADCs, and RF front-ends without external feedback) |
| Input Voltage Range | 0.9 V to 5.5 V (supports single-cell alkaline/NiMH/Li-ion down to end-of-life voltage) |
| Quiescent Current | <5 μA typical (minimizes battery drain in always-on sensor nodes and sleep-mode microcontrollers) |
| Shutdown Current | <5 nA typical (enables multi-year battery life in backup-power-critical applications) |
| Max Output Current | 100 mA at 3.3 V with 1.2 V input (sufficient for MSP430 peripherals, LED indicators, and low-power transceivers) |
| Switch Current Limit | 400 mA average (limits inrush and fault currents while supporting peak loads during wake-up) |
| Efficiency | Up to 93% at typical operating conditions (reduces thermal stress and extends runtime in space-constrained designs) |
| Package | SOT-23-5 (DBV), 2.8 mm × 2.9 mm footprint (enables ultra-compact PCB layouts for wearables and implantables) |
Pinout & Package
Package: SOT-23-5 (DBV), 2.8 mm × 2.9 mm body, surface-mount, RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Boost converter input | Primary power input node; connects to battery or low-voltage source; must be decoupled with ≥10 μF ceramic capacitor |
| GND | Control and power ground | Common reference for logic and power stages; requires low-impedance connection to PCB ground plane |
| EN | Enable control input | Active-high digital control (VIH ≥ 0.78 V); must be actively terminated to avoid floating; controls both boost and bypass modes |
| VOUT | Regulated output | Fixed 3.3 V supply output; connects to load; requires ≥4.7 μF ceramic output capacitor placed adjacent to pin |
| L | Inductor connection | Switch node for external inductor; carries high-frequency pulsed current; requires short, wide trace to minimize EMI and losses |
Key Features
| Feature | Design Value |
|---|---|
| Bypass switch in shutdown | Direct VIN-to-VOUT path via P-MOSFET enables battery backup without external diode or switch IC |
| Hysteretic current-mode control | Self-regulating architecture eliminates need for external compensation components and ensures stability across input/load variations |
| Ultra-low quiescent current | <5 μA enables >10-year battery life in coin-cell-powered IoT sensors with 10 μA average system current |
| Integrated protection | Overtemperature (150 °C), undervoltage lockout (0.6–0.8 V), and switch current limiting prevent damage during fault conditions |
| Fixed-output topology | No external resistors required - simplifies BOM, reduces layout area, and eliminates resistor tolerance drift effects on output accuracy |
Applications
| Medical Sensor Node | MSP430-Based Data Logger |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with periodic BLE transmission. IC Role / Device Role / Timing Role: Primary 3.3 V power rail generator and battery-backup switch during MCU deep-sleep cycles. Use Value: <5 μA IQ extends battery life beyond 2 years; bypass switch maintains RTC and SRAM retention during shutdown without additional components. | Use Scenario: Environmental sensor node logging temperature/humidity every 5 minutes using MSP430FR5969. IC Role / Device Role / Timing Role: Efficient 3.3 V supply for MCU, ADC, and SPI flash during active measurement; low-IQ standby during sleep. Use Value: 93% peak efficiency minimizes self-heating in sealed enclosure; fixed 3.3 V output eliminates calibration drift from resistor tolerances. |
| Fuel Cell-Powered Wearable | Low-Power White LED Driver |
Use Scenario: Flexible health patch powered by miniature direct methanol fuel cell (0.9–1.5 V output). IC Role / Device Role / Timing Role: Input voltage booster and seamless power-path manager during fuel cell voltage sag or startup. Use Value: 0.9 V start-up capability enables operation before fuel cell reaches nominal voltage; bypass switch sustains load during transient dips. | Use Scenario: Emergency indicator LED on smoke detector powered by AA alkaline cells. IC Role / Device Role / Timing Role: Boost driver delivering regulated 3.3 V to LED string when battery drops below 1.5 V per cell. Use Value: 100 mA output supports bright LED illumination even at 0.9 V input; <5 nA shutdown current prevents battery depletion during 10-year shelf life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610981DSER | Same 3.3 V fixed output, but includes integrated LDO post-regulator and higher IQ (1.2 μA vs 5 μA); 6-pin WSON package | Designed for ultra-low-noise analog rails (e.g., precision ADCs); lacks bypass switch functionality | Select when clean 3.3 V for sensitive analog circuits is prioritized over battery backup capability |
| MAX17222ELT+T | 3.3 V fixed output, 300 nA IQ, 0.7 V min input, but no bypass switch; uses pulse-skipping mode instead of hysteretic control | Optimized for longest possible battery life in infrequently active devices; lower max output current (50 mA) | Select when sub-1 μA quiescent current dominates design requirements and bypass functionality is unnecessary |
Compared with TPS61097A-33DBVR, TPS610981DSER adds analog noise suppression at the cost of missing battery-backup switching, while MAX17222ELT+T achieves deeper sleep current but sacrifices output drive strength and bypass capability - making TPS61097A-33DBVR uniquely suited for applications requiring both ultra-low IQ and seamless power-path continuity.
Availability
TPS61097A-33DBVR is available at Aetrix Electronics and suitable for MSP430-based data loggers, personal medical products, and fuel cell-powered wearables requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS61097A-33DBVR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for battery-operated systems.
The TPS61097A-33DBVR belongs to TI's low-input-voltage boost converter product line, designed specifically for energy-harvesting and single-cell battery applications where extended runtime, minimal quiescent consumption, and reliable power-path management are essential.
FAQ
What is the minimum input voltage required for TPS61097A-33DBVR to start switching?
The TPS61097A-33DBVR begins switching at an input voltage as low as 0.9 V. Startup is supported by an internal oscillator that activates when VIN is insufficient to power the control circuitry; once VOUT reaches ~1.8 V, the device transitions to normal hysteretic current-mode operation. This behavior is confirmed in the datasheet's Section 8.3.4 and Figure 20.
Does TPS61097A-33DBVR require external feedback resistors to set its output voltage?
No, the TPS61097A-33DBVR provides a factory-trimmed fixed 3.3 V output and does not require external feedback resistors. The output voltage is internally regulated to 3.30 V ±3% across input and load conditions, as specified in Section 6.5 Electrical Characteristics of the datasheet.
How does the bypass switch in TPS61097A-33DBVR function during shutdown?
When EN is pulled low, the TPS61097A-33DBVR disables the boost converter and turns on an internal P-channel MOSFET that directly connects the L pin (and thus VIN) to VOUT. This creates a low-impedance path (<3.4 Ω typical) independent of UVLO or thermal shutdown, enabling uninterrupted power to critical loads like RTCs or SRAM during system sleep.
What is the maximum continuous output current capability of TPS61097A-33DBVR at 3.3 V output?
The TPS61097A-33DBVR delivers up to 100 mA continuous output current at 3.3 V when supplied from a 1.2 V input, as verified in the Typical Operating Application section and Figure C001 (Maximum Output Current vs Input Voltage). Performance scales with input voltage - e.g., ~150 mA is achievable at VIN = 1.8 V.
Is TPS61097A-33DBVR compatible with ceramic output capacitors, and what value is recommended?
Yes, the TPS61097A-33DBVR is fully compatible with ceramic output capacitors. A minimum of 4.7 μF is required, but 10 μF is recommended (e.g., Murata GRM319R61A106KE19) to ensure stability, low output ripple, and robust transient response - especially when paired with inductors ≥4.7 μH, per Section 9.2.2.2.2 of the datasheet.
TPS61097A-33DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TPS61097A-33DBVR FAQ
1.How can I place an order for TPS61097A-33DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61097A-33DBVR 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 TPS61097A-33DBVR reliable?
The price and inventory of TPS61097A-33DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61097A-33DBVR is usually 5 days.
3.What payment methods are accepted for TPS61097A-33DBVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61097A-33DBVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61097A-33DBVR?
TPS61097A-33DBVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61097A-33DBVR 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 TPS61097A-33DBVR?
For technical support, including TPS61097A-33DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61097A-33DBVR requirements.
6.How does Aetrix verify that TPS61097A-33DBVR is sourced from the original manufacturer or authorized distributors?
All TPS61097A-33DBVR 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 TPS61097A-33DBVR meets industry standards.
7.What is the process for return or replacement of TPS61097A-33DBVR?
All TPS61097A-33DBVR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61097A-33DBVR, 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 TPS61097A-33DBVR part is unused and in its original packaging.
Return procedure for TPS61097A-33DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61097A-33DBVR 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…
