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Texas Instruments TPS61099YFFR
- Part No.:
- TPS61099YFFR
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFBGA, DSBGA
- Datasheet:
-
TPS61099YFFR.pdf
- Description:
- IC REG BOOST ADJ 800MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:6,996
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Product details
Overview
TPS61099YFFR from Texas Instruments is an ultra-low-quiescent-current synchronous boost converter designed for battery-powered wearable and portable systems. It operates from 0.7V to 5.5V input, delivers adjustable 1.8V–5.5V output, features 600nA IQ into VOUT and 400nA IQ into VIN, and supports true disconnection during shutdown - enabling multi-year operation on coin-cell or alkaline batteries in optical heart rate monitors and memory LCD bias circuits.
For engineers reviewing the TPS61099YFFR datasheet, TPS61099YFFR pinout, TPS61099YFFR application, or TPS61099YFFR equivalent, key selection considerations include its hysteretic control topology, down-mode regulation capability (VIN > VOUT), 0.8A peak switch current limit, 6-ball WCSP package (1.23mm × 0.88mm), and verified performance at 10µA load with up to 75% efficiency in fixed-output variants.
Technical Context
The TPS61099YFFR uses a hysteretic current-mode control architecture that dynamically adjusts switching frequency based on input/output voltage and inductor value - eliminating need for external compensation while maintaining high light-load efficiency. Its dual-mode operation includes boost mode (VIN < VOUT), down mode (VIN > VOUT but regulated), and pass-through mode (VIN ≥ VOUT + 0.5V), with automatic transitions governed by internal thresholds.
It integrates cycle-by-cycle overcurrent protection (ILIM = 0.8–1.25A), undervoltage lockout (UVLO rising = 0.7V, hysteresis = 200mV), output overvoltage protection (OVP = 5.8V), and thermal shutdown (TJ = 150°C). The FB pin enables programmable output via resistor divider (VREF = 1.00V ±2%), while fixed-output versions omit FB connection and use internal EEPROM configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - supports single alkaline, NiMH, Li-Mn, or Li-ion cells including depleted states down to 0.7V. |
| Quiescent Current (VIN) | 400nA - enables >10-year battery life in always-on sensor nodes powered by CR2032 coin cells. |
| Quiescent Current (VOUT) | 600nA - critical for low-power bias rails where VOUT supplies high-impedance loads like LCD segments. |
| Output Voltage Range | Adjustable 1.8V–5.5V - set via external resistor divider on FB pin; VREF = 1.00V ±2% ensures ±1% output accuracy. |
| Peak Switch Current Limit | 0.8A minimum - supports up to 300mA output current in 3.3V→5V conversion with 93% efficiency at 200mA. |
| Efficiency @ 10µA Load | Up to 75% - achieved in fixed-output versions, enabling reliable operation in µA-level sensor bias applications. |
| Shutdown Current | ≤1.6µA into VIN - true disconnection isolates load from source, eliminating standby leakage paths. |
| Package | 6-ball DSBGA (YFF) - 1.23mm × 0.88mm footprint ideal for space-constrained wearables and hearables. |
Pinout & Package
TPS61099YFFR is housed in a 6-ball, 1.23mm × 0.88mm wafer-chip-scale package (DSBGA/YFF) with bottom-side solder balls. Thermal performance is optimized via PowerPAD™ connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 0.7–5.5V supply; connects to input capacitor and battery anode; UVLO threshold = 0.7V. |
| SW | Switch node | Connects to inductor (L1); carries pulsed current up to 0.8A peak; requires low-ESR ceramic capacitor nearby. |
| EN | Enable logic input | Active-high control (VIH = 1.2V min); must not float; pulls device into shutdown consuming ≤1.6µA. |
| GND | Power ground | Reference for all signals; connects to PowerPAD™ for thermal and EMI performance; shared with input/output caps. |
| VOUT | Regulated output | Delivers 1.8–5.5V; supplies load directly; supports down-mode regulation when VIN exceeds VOUT. |
| FB | Feedback input | Senses output via resistor divider; sets VOUT = VREF × (1 + R1/R2); tied to GND for fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic current-mode control | Eliminates external compensation, enables stable operation across wide VIN/VOUT ranges without loop instability. |
| Down-mode regulation | Maintains precise VOUT regulation even when VIN > VOUT (e.g., 4.2V battery powering 3.3V rail), avoiding LDO inefficiency. |
| True shutdown disconnection | Completely isolates VOUT from VIN using integrated PMOS rectifier, reducing system standby current to nanoampere level. |
| Ultra-low quiescent current | 400nA into VIN and 600nA into VOUT enable >10-year operation on CR2032 in always-on optical HRM LED drivers. |
| Integrated OVP and thermal protection | OVP triggers at 5.8V (100mV hysteresis); thermal shutdown activates at 150°C (25°C hysteresis), ensuring robust field reliability. |
Applications
| Memory LCD Bias | Optical Heart Rate Monitor |
|---|---|
Use Scenario: Driving segment electrodes of bistable memory LCDs in smartwatches and fitness trackers requiring stable 3.3V–5V bias with intermittent update cycles. IC Role / Device Role / Timing Role: Primary DC-DC bias generator delivering regulated output from single-cell battery; operates in burst mode during display idle periods. Use Value: 75% efficiency at 10µA load extends battery life beyond 2 years on CR2032, while down mode maintains regulation as battery voltage decays from 3.0V to 2.0V. | Use Scenario: Supplying constant-current drive to green LEDs in photoplethysmography (PPG) sensors worn continuously on skin. IC Role / Device Role / Timing Role: High-efficiency LED bias rail generator; synchronizes with ADC sampling windows to minimize noise coupling. Use Value: 400nA IQ into VIN enables sub-µA average system sleep current, supporting multi-week runtime between charges in compact wearables. |
| Wearable Sensor Nodes | Low-Power Wireless Transceivers |
Use Scenario: Powering ultra-low-power environmental sensors (temperature, humidity) in Bluetooth LE beacons deployed for asset tracking. IC Role / Device Role / Timing Role: Main power rail converter for MCU and sensor ICs; enters shutdown between measurement intervals. Use Value: True disconnection reduces system standby current to <1µA, enabling 5+ year operation on AA alkaline cells with periodic wake-ups. | Use Scenario: Supplying regulated 3.3V to sub-GHz or BLE radio ICs in battery-operated IoT endpoints transmitting data every 5–60 minutes. IC Role / Device Role / Timing Role: Efficient boost stage preceding LDO or direct radio supply; handles dynamic load transients during TX bursts. Use Value: 93% efficiency at 200mA supports 10dBm RF output without thermal derating in 2mm² WCSP footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610994YFFR | Fixed 3.3V output; no FB pin required; VREF internally trimmed to 1.00V; same YFF package and IQ specs. | Eliminates external resistors for 3.3V designs; slightly higher light-load efficiency (75% @10µA) due to optimized internal reference. | Select when output voltage is fixed at 3.3V and board area is constrained - reduces BOM count and layout complexity. |
| TPS610997YFFR | Fixed 5.0V output; identical quiescent current, package, and down-mode behavior; VOUT accuracy ±1% over temperature. | Optimized for memory LCD and LED bias requiring exact 5.0V; eliminates feedback network and improves long-term stability vs. resistor drift. | Choose for 5V bias rails where precision and simplicity outweigh programmability - especially in production-sensitive consumer wearables. |
Compared with TPS61099YFFR, the fixed-output TPS610994YFFR and TPS610997YFFR offer identical ultra-low IQ and WCSP packaging but remove output adjustability to improve light-load efficiency and reduce component count - making them preferred for volume production where VOUT is known and unchanging.
Availability
TPS61099YFFR is available at Aetrix Electronics and suitable for wearable sensor nodes, optical heart rate monitors, and memory LCD bias circuits requiring stable component supply with guaranteed long-term manufacturability and lifecycle support.
Supply support for TPS61099YFFR 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 IC design.
The TPS61099x family was engineered specifically for ultra-low-power battery-operated devices - prioritizing nanoampere quiescent current, miniature WCSP packaging, and intelligent down-mode regulation to maximize runtime in wearables and portable medical sensors.
FAQ
What is the minimum input voltage required for TPS61099YFFR to start up?
The TPS61099YFFR can start up with a minimum input voltage of 0.7V under light load conditions (e.g., >3kΩ). Startup fails if the load draws excessive current before VOUT reaches ~1.6V, requiring either reduced load or increased VIN. UVLO rising threshold is 0.7V with 200mV hysteresis, so re-enabling requires VIN ≥ 0.9V after dropout.
How does TPS61099YFFR achieve ultra-low quiescent current in boost mode?
The TPS61099YFFR achieves 400nA IQ into VIN and 600nA IQ into VOUT through a combination of hysteretic control (eliminating continuous error amplifier operation), burst-mode operation at light loads (periodic switching with deep sleep between cycles), and optimized internal biasing circuitry. These techniques reduce active circuitry duty cycle while maintaining regulation accuracy.
Can TPS61099YFFR regulate output voltage when input voltage exceeds the target output?
Yes - the TPS61099YFFR supports down-mode regulation, maintaining precise VOUT even when VIN > VOUT (e.g., 4.2V battery powering 3.3V rail). It achieves this by controlling the rectifying PMOS gate to introduce a variable voltage drop. Down mode activates when VIN > VOUT – 50mV and remains active until VIN > VOUT + 0.5V, at which point it transitions to pass-through mode.
What is the function of the FB pin on TPS61099YFFR?
The FB pin on TPS61099YFFR senses output voltage via an external resistor divider to enable adjustable output (1.8V–5.5V). It compares the divided voltage to an internal 1.00V reference (±2%) and adjusts switching to maintain regulation. For fixed-output variants like TPS610994YFFR, FB is internally connected to GND and unused externally.
Does TPS61099YFFR provide overvoltage protection, and what is the threshold?
Yes - the TPS61099YFFR includes output overvoltage protection (OVP) that disables switching when VOUT exceeds 5.8V (typical), with 100–200mV hysteresis. This protects downstream components if the FB resistor divider fails open or is incorrectly configured. Recovery occurs automatically once VOUT falls below 5.7V.
TPS61099YFFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-UFBGA, 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):
- 0.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 800mA (Switch)
- Frequency - Switching:
- -
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DSBGA
TPS61099YFFR FAQ
1.How can I place an order for TPS61099YFFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61099YFFR 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 TPS61099YFFR reliable?
The price and inventory of TPS61099YFFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61099YFFR is usually 5 days.
3.What payment methods are accepted for TPS61099YFFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61099YFFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61099YFFR?
TPS61099YFFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61099YFFR 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 TPS61099YFFR?
For technical support, including TPS61099YFFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61099YFFR requirements.
6.How does Aetrix verify that TPS61099YFFR is sourced from the original manufacturer or authorized distributors?
All TPS61099YFFR 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 TPS61099YFFR meets industry standards.
7.What is the process for return or replacement of TPS61099YFFR?
All TPS61099YFFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61099YFFR, 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 TPS61099YFFR part is unused and in its original packaging.
Return procedure for TPS61099YFFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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