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Texas Instruments TPS612994YBHR
- Part No.:
- TPS612994YBHR
- Manufacturer:
- Texas Instruments
- Package:
- 6-XFBGA, DSBGA
- Datasheet:
-
TPS612994YBHR.pdf
- Description:
- IC REG BOOST PROG 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,656
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Product details
Overview
TPS612994YBHR from Texas Instruments is a synchronous boost converter IC with 95nA quiescent current, 100mA average input current limit, and true shutdown functionality. It operates from 0.5V–5.5V input, delivers 1.8V–5.5V output, and supports fast transient response (~8μs) in 5V output configurations - enabling ultra-low-power operation in coin-cell–powered wearable sensors.
For engineers reviewing the TPS612994YBHR datasheet, TPS612994YBHR pinout, TPS612994YBHR application, or TPS612994YBHR equivalent, key selection criteria include its 100mA input current limit, WCSP package footprint (1.2mm × 0.8mm), 60nA shutdown current, and compatibility with alkaline/coin-cell battery systems requiring long runtime and load-step stability.
Technical Context
The TPS612994YBHR 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. Its true shutdown mode fully disconnects VIN from VOUT via high-side MOSFET turn-off when EN is low.
It features programmable output voltage via resistor-based VSEL pin configuration (21 options from 1.8V to 5.5V), under-voltage lockout (0.7V rising threshold), and integrated protections including output short-circuit and thermal shutdown (150°C trip, 20°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 95nA into VOUT - enables >1-year runtime on CR2032 at μA-level loads |
| Input Current Limit | 100mA average - prevents excessive alkaline/coin-cell discharge while supporting ~500mA peak output at 3V→5V |
| Startup Voltage | 0.7V (rising) - allows operation down to near-dead battery states without external bias |
| Output Voltage Range | 1.8V–5.5V - covers MCU I/O, BLE radios, and optical sensor biasing with single-device flexibility |
| Efficiency | 94% at VIN=3.6V, VOUT=5V, IOUT=200mA - minimizes thermal rise in sealed wearables |
| Transient Response | ~8μs settling time (0A→200mA) at VOUT=5V - maintains stable supply during RF transmit bursts |
| Shutdown Current | 60nA into VIN - ensures negligible standby drain in always-on sensing nodes |
Pinout & Package
TPS612994YBHR uses a 6-ball WCSP package (1.2mm × 0.8mm, 0.4mm pitch) optimized for space-constrained wearables. The ball layout follows standard YBH top-view configuration with solder-bump interconnects.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 0.5V–5.5V source; UVLO activates at 0.7V rising edge |
| SW | Switch node | Connects internal high-side/low-side MOSFETs; requires external inductor and catch diode-free layout |
| EN | Enable control | Logic-high (>0.84V) enables regulation; logic-low forces true shutdown (VIN–VOUT isolation) |
| VSEL | Voltage select | Resistor-to-GND sets one of 21 output voltages (1.8V–5.5V); latched at startup only |
| VOUT | Regulated output | Delivers stable boosted voltage; supports fast transient mode when configured for 4.5V/5V/5.5V |
| GND | Ground reference | Common return for power and logic; must be low-impedance plane beneath WCSP die |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic current-mode control | Enables fixed 350mA inductor ripple for predictable light-load efficiency and automatic PFM/PWM mode transition |
| True shutdown with <60nA VIN current | Provides complete VIN–VOUT isolation and nanoamp-level system sleep current for battery longevity |
| VSEL resistor programming (21 options) | Eliminates external feedback resistors and enables firmware-agnostic voltage configuration in production |
| Fast transient mode (8μs settling) | Meets dynamic load requirements of BLE/Wi-Fi transceivers without external compensation components |
| Integrated SCP and thermal shutdown | Protects against shorted outputs and PCB overheating without external fault monitoring circuitry |
Applications
| Smart Watch Power Management | TWS Earbud Sensor Hub |
|---|---|
Use Scenario: Boosting 2.4V–3.0V coin-cell output to 3.3V/5V for display backlight and touch controller. IC Role / Device Role / Timing Role: Primary DC-DC regulator providing regulated rail with <100nA quiescent draw during screen-off state. Use Value: Extends CR2032 life beyond 18 months by limiting input current to 100mA and maintaining 94% efficiency at typical 150mA loads. |
Use Scenario: Supplying 5V to MEMS microphones and IMU sensors during active voice capture in Bluetooth earbuds. IC Role / Device Role / Timing Role: Fast-transient boost stage ensuring stable 5V rail during 0→200mA RF + sensor load steps. Use Value: 8μs output settling prevents audio clipping and sensor data corruption during burst-mode wireless transmission. |
| Portable Medical Pulse Oximeter | Optical Module Bias Supply |
Use Scenario: Generating 5V from single AA/AAA alkaline cell (0.9V–1.5V) to drive red/IR LEDs and analog front-end. IC Role / Device Role / Timing Role: Ultra-low-IQ boost converter enabling continuous SpO₂ monitoring with sub-10μA average system current. Use Value: 0.7V startup and 95nA VOUT quiescent current allow operation down to 0.5V input, maximizing usable battery capacity. |
Use Scenario: Providing precise 3.3V/5V bias to VCSEL drivers and photodiode amplifiers in compact optical transceivers. IC Role / Device Role / Timing Role: Low-noise, high-PSRR boost regulator minimizing supply-induced jitter in high-speed optical links. Use Value: Tight ±2% output accuracy and <15mV load regulation ensure consistent laser diode current and signal integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS612994DRLR | SOT563 package (1.6mm × 1.6mm); identical electrical specs and pinout | Preferred for manual assembly or thermal-limited layouts where WCSP rework is impractical | Select when board-level reliability testing favors larger pitch or when thermal mass requirements exceed WCSP capability |
| TPS612993YBHR | 50mA input current limit; same WCSP package and shutdown behavior | Better suited for lower-power sensors (e.g., temperature/humidity) where 100mA headroom is unnecessary | Choose when system peak load stays below 250mA and extended battery life outweighs margin for future feature expansion |
Compared with TPS612994DRLR, the TPS612994YBHR offers 35% smaller footprint and lower thermal resistance (RθJB = 39.4°C/W vs. 24.6°C/W), while TPS612993YBHR trades 50mA lower current limit for reduced inrush stress on aging alkaline cells - both require no PCB redesign but differ in thermal and volumetric optimization priorities.
Availability
TPS612994YBHR is available at Aetrix Electronics and suitable for smart watch power management, TWS earbud sensor hubs, and portable medical pulse oximeters requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS612994YBHR 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 energy-efficient power conversion.
The TPS61299x family was designed specifically for ultra-low-power portable electronics powered by primary batteries, emphasizing nanoamp quiescent operation, wide input range, and minimal external component count.
FAQ
What is the minimum input voltage required to start up the TPS612994YBHR?
The TPS612994YBHR has an under-voltage lockout (UVLO) rising threshold of 0.7V. Once started, it can continue operating down to 0.5V input. This allows reliable startup from nearly depleted coin-cell batteries while maintaining regulation across the full 0.5V–5.5V input range. The TPS612994YBHR achieves this with no external bias circuitry.
How does the VSEL pin configure output voltage on the TPS612994YBHR?
The TPS612994YBHR uses a resistor between VSEL and GND to select one of 21 factory-trimmed output voltages (1.8V–5.5V). Configuration occurs once at startup - the device samples VSEL for ~170μs when VOUT reaches 1.8V, then latches the setting. Changing the resistor during operation has no effect unless EN is toggled to reinitialize detection.
Does the TPS612994YBHR support fast transient response, and under what conditions?
Yes - the TPS612994YBHR achieves ~8μs output settling time (0A→200mA) when configured for 4.5V, 5V, or 5.5V output. This fast mode is enabled automatically based on VSEL resistor selection and does not require external pins or registers. It is specifically optimized for RF and sensor burst loads in wearables and optical modules.
What protection features are integrated into the TPS612994YBHR?
The TPS612994YBHR includes output short-circuit protection (SCP), thermal shutdown (150°C trip with 20°C hysteresis), and input current limiting (100mA average). During SCP, it limits input current to ~20mA until fault clears. Thermal protection disables switching and auto-restarts after cooldown. These functions operate autonomously without external components.
Can the TPS612994YBHR be used with alkaline batteries, and how does it manage low-voltage operation?
Yes - the TPS612994YBHR is explicitly designed for alkaline and coin-cell batteries. Its 0.7V startup, 0.5V operational minimum, and 100mA input current limit prevent excessive discharge while delivering regulated output. At light loads, its 95nA quiescent current into VOUT extends runtime significantly compared to conventional boost converters.
TPS612994YBHR 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:
- Programmable
- 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:
- -
- 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)
TPS612994YBHR FAQ
1.How can I place an order for TPS612994YBHR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS612994YBHR 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 TPS612994YBHR reliable?
The price and inventory of TPS612994YBHR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS612994YBHR is usually 5 days.
3.What payment methods are accepted for TPS612994YBHR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS612994YBHR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS612994YBHR?
TPS612994YBHR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS612994YBHR 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 TPS612994YBHR?
For technical support, including TPS612994YBHR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS612994YBHR requirements.
6.How does Aetrix verify that TPS612994YBHR is sourced from the original manufacturer or authorized distributors?
All TPS612994YBHR 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 TPS612994YBHR meets industry standards.
7.What is the process for return or replacement of TPS612994YBHR?
All TPS612994YBHR units undergo pre-shipment inspection (PSI). If there is an issue with TPS612994YBHR, 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 TPS612994YBHR part is unused and in its original packaging.
Return procedure for TPS612994YBHR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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