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Texas Instruments TPS61299YBHR
- Part No.:
- TPS61299YBHR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS61299YBHR.pdf
- Description:
- IC REG BOOST ADJ 500MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:7,728
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Product details
Overview
TPS61299YBHR from Texas Instruments is a synchronous boost converter IC optimized for ultra-low-power battery-powered systems, featuring 95nA typical quiescent current into VOUT, 1.2A average input current limit, 0.7V minimum start-up voltage (TPS61299x variant), and operation down to 150mV input with VIN > 0.7V. It delivers regulated output from 1.8V to 5.5V in a 1.2mm × 0.8mm WCSP package and is deployed in coin-cell–powered wearables requiring long runtime and fast load transient response.
For engineers reviewing the TPS61299YBHR datasheet, TPS61299YBHR pinout, TPS61299YBHR application, or TPS61299YBHR equivalent, this page provides verified technical context, WCSP-specific pin mapping, confirmed fast-transient performance (8μs setting time), true shutdown behavior at EN low, and validated alternatives for alkaline/coin-cell boost applications.
Technical Context
The TPS61299YBHR implements a hysteretic current-mode control architecture with constant 350mA inductor ripple current, enabling variable switching frequency (~3MHz at VIN=3.6V, VOUT=5V, L=1μH) and automatic PFM/PWM transition. It supports auto pass-through when VIN > VOUT and enters burst mode under light load to sustain 95nA quiescent current.
As a TPS61299x-series device (non-A variant), it features true disconnection at EN low-fully turning off the high-side MOSFET-with 60nA typical shutdown current into VIN. Its UVLO rising threshold is 0.7V, and it operates continuously down to 0.5V after startup, enabling deep discharge utilization of single alkaline or coin cells.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current (VOUT) | 95nA typical - enables multi-year runtime on CR2032 coin cell in always-on sensor nodes |
| Input Current Limit | 1.2A average - supports up to 500mA output at 3V→5V conversion with ~94% efficiency |
| Start-up Voltage | 0.7V (rising) - allows reliable startup from partially depleted alkaline or zinc-air batteries |
| Output Voltage Range | 1.8V to 5.5V - configurable via VSEL resistor; covers MCU core, BLE radio, and display bias rails |
| Load Transient Setting Time | ~8μs (0A → 200mA) - maintains stable 5V rail during RF transmit bursts in TWS earbuds |
| Shutdown Current (VIN) | 60nA typical - ensures negligible battery drain during system sleep or power-off states |
| Package | 6-ball WCSP (1.2mm × 0.8mm) - enables ultra-compact PCB layout for space-constrained wearables |
Pinout & Package
TPS61299YBHR uses a 6-ball wafer-level chip-scale package (WCSP) with 0.4mm pitch, measuring 1.2mm × 0.8mm. The package is bottom-soldered with solder balls; no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 0.5V–5.5V; powers internal circuitry and high-side switch; UVLO triggers at 0.7V rising |
| SW | Switch node | Connects to external inductor; carries pulsed current; requires low-inductance layout to minimize ringing |
| EN | Enable logic input | Active-high; pulls low for true shutdown (full input-output isolation); internal 800kΩ pulldown |
| VSEL | Voltage select | Resistor-to-GND sets one of 21 output voltages (e.g., 3.3V, 5.0V); latched at startup only |
| VOUT | Regulated output | Delivers stable boosted voltage; requires ≥10μF ceramic output capacitor for stability |
| GND | Ground reference | System return path; must be low-impedance connection to minimize noise and thermal resistance |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic current-mode control | Enables variable-frequency operation without external compensation, reducing component count and layout sensitivity |
| True shutdown with full disconnection | EN low disables switching and turns off high-side MOSFET, eliminating leakage paths between VIN and VOUT |
| Burst mode at light load | Maintains 95nA IQ by cycling on/off only as needed to hold regulation-critical for multi-month battery life |
| VSEL-based output programming | 21 precise output options (1.8V–5.5V) set via single external resistor-no EEPROM or I²C required |
| Fast transient response (8μs) | Minimizes output droop during sudden load steps (e.g., BLE packet transmission), preserving system stability |
Applications
| Smart Watch Power Management | TWS Earbud Boost Supply |
|---|---|
Use Scenario: Powers display backlight and BLE SoC from a single CR2032 coin cell in a wrist-worn fitness tracker. IC Role / Device Role / Timing Role: Primary boost regulator delivering regulated 3.3V/5.0V; manages battery discharge down to 0.5V post-startup. Use Value: 95nA quiescent current extends battery life beyond 12 months in standby; true shutdown eliminates parasitic drain during sleep. | Use Scenario: Supplies 5V to charging IC and audio codec in true wireless stereo earbuds with space-limited PCB. IC Role / Device Role / Timing Role: Compact, high-efficiency boost converter enabling rapid 0A→200mA load transitions during RF activity. Use Value: 8μs transient response prevents brownout during Bluetooth transmit bursts; 1.2mm × 0.8mm WCSP saves >30% board area vs. SOT563. |
| Portable Medical Sensor Node | Optical Module Bias Supply |
Use Scenario: Powers optical heart-rate sensor and low-power MCU in disposable patch-style vital sign monitor. IC Role / Device Role / Timing Role: Ultra-low-IQ boost stage converting 1.5V alkaline to stable 3.3V for analog front-end and ADC. Use Value: 0.7V start-up enables full battery utilization; 60nA shutdown current ensures shelf life >2 years before first use. | Use Scenario: Generates precise 5.0V bias for VCSEL driver and photodiode amplifier in compact optical proximity sensor. IC Role / Device Role / Timing Role: Low-noise, fast-settling boost supply ensuring stable optical signal integrity during dynamic sensing. Use Value: Tight ±2% output accuracy and <15mV load regulation support sub-millivolt analog measurement fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61299DRLR | SOT563 package (1.6mm × 1.6mm); identical electrical specs and pinout; higher thermal resistance (RθJA = 135.6°C/W vs. 130.0°C/W) | Better suited for hand-soldered prototypes or thermally less constrained layouts where WCSP rework is impractical | Select when board assembly process lacks fine-pitch WCSP capability or thermal margin exceeds 5°C/W requirement |
| TPS61299A | Same WCSP package but force-pass-through at EN low (30nA IBY); 0.9V UVLO; same 1.2A input limit and 1.8V–5.5V VOUT range | Required where system needs uninterrupted VIN-to-VOUT conduction during disable (e.g., backup power path) | Choose only if true shutdown is not required and pass-through functionality aligns with system power sequencing |
Compared with TPS61299DRLR, TPS61299YBHR offers 25% smaller footprint and marginally better thermal performance; compared with TPS61299A, it provides full input-output isolation in shutdown-critical for zero-drain battery preservation in always-on devices.
Availability
TPS61299YBHR is available at Aetrix Electronics and suitable for smart watch, portable medical equipment, and TWS earbud designs requiring stable component supply, ultra-low quiescent current, and WCSP-level miniaturization.
Supply support for TPS61299YBHR 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 battery-efficient power conversion.
The TPS61299x family was designed specifically for ultra-low-power portable electronics powered by primary cells-prioritizing nanoscale IQ, wide input range, and minimal solution size over high-current capability.
FAQ
What is the minimum input voltage required to start up the TPS61299YBHR?
The TPS61299YBHR has a 0.7V rising UVLO threshold. It starts switching once VIN rises above 0.7V and sustains operation down to 0.5V after startup. This enables full utilization of alkaline and coin-cell batteries, even near end-of-life. The TPS61299YBHR datasheet confirms this value under "Recommended Operating Conditions" and "Electrical Characteristics."
Does the TPS61299YBHR support true shutdown, and what is its shutdown current?
Yes-the TPS61299YBHR (as a non-A variant) supports true shutdown: when EN is pulled low, the high-side MOSFET fully turns off, disconnecting VIN from VOUT. Its typical shutdown current into VIN is 60nA, verified across temperature in the "Electrical Characteristics" table. This ensures negligible battery drain in system sleep modes.
How is output voltage selected on the TPS61299YBHR?
Output voltage is set using an external resistor between the VSEL pin and GND. The TPS61299YBHR supports 21 factory-trimmed options from 1.8V to 5.5V (e.g., 3.3V at 0Ω, 5.0V at 4.75kΩ). Configuration is latched once at startup; changing the resistor mid-operation has no effect unless EN is toggled.
What is the typical switching frequency of the TPS61299YBHR under standard conditions?
The TPS61299YBHR uses hysteretic current-mode control and does not have a fixed frequency. At VIN = 3.6V, VOUT = 5V, and L = 1μH, the typical switching frequency is approximately 3MHz. Frequency varies dynamically with load, input/output voltage, and inductance-detailed in Section 7.3.4 of the TPS61299YBHR datasheet.
Can the TPS61299YBHR operate with input voltages below 1V after startup?
Yes-the TPS61299YBHR continues regulating down to 0.5V after initial startup (which requires VIN > 0.7V). With VIN > 0.7V applied, it can sustain operation even as the battery discharges to 150mV, provided the signal VIN remains above 0.7V. This behavior is explicitly documented in the "Features" and "Description" sections of the TPS61299YBHR datasheet.
TPS61299YBHR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA (1.23x0.84)
TPS61299YBHR FAQ
1.How can I place an order for TPS61299YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61299YBHR 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 TPS61299YBHR reliable?
The price and inventory of TPS61299YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61299YBHR is usually 5 days.
3.What payment methods are accepted for TPS61299YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61299YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61299YBHR?
TPS61299YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61299YBHR 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 TPS61299YBHR?
For technical support, including TPS61299YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61299YBHR requirements.
6.How does Aetrix verify that TPS61299YBHR is sourced from the original manufacturer or authorized distributors?
All TPS61299YBHR 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 TPS61299YBHR meets industry standards.
7.What is the process for return or replacement of TPS61299YBHR?
All TPS61299YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61299YBHR, 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 TPS61299YBHR part is unused and in its original packaging.
Return procedure for TPS61299YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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