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Texas Instruments TPS61099YFFT
- Part No.:
- TPS61099YFFT
- Manufacturer:
- Texas Instruments
- Package:
- 6-UFBGA, DSBGA
- Datasheet:
-
TPS61099YFFT.pdf
- Description:
- IC REG BOOST ADJ 800MA 6DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:4,208
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Product details
Overview
TPS61099YFFT 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 400nA IQ into VIN and 600nA IQ into VOUT, supports true shutdown with load disconnection, and targets memory LCD bias and optical heart rate monitor LED drivers.
For engineers reviewing the TPS61099YFFT datasheet, TPS61099YFFT pinout, TPS61099YFFT application, or TPS61099YFFT equivalent, key selection criteria include ultra-low-light-load efficiency (75% at 10µA), hysteretic control architecture, down-mode regulation capability, and WCSP package compatibility for space-constrained designs.
Technical Context
The TPS61099YFFT uses a hysteretic current-mode control topology that dynamically adjusts switching frequency based on input voltage, output voltage, and inductor value-enabling discontinuous conduction mode (DCM) and burst mode operation under light loads. This architecture sustains high efficiency while consuming only 1µA total quiescent current.
It implements three functional modes: boost (VIN < VOUT − 50mV), down mode (VOUT − 50mV < VIN < VOUT + 0.5V), and pass-through (VIN > VOUT + 0.5V), with automatic transitions governed by internal comparators. Down mode maintains regulated output via PMOS gate control, while pass-through bypasses switching entirely using the integrated rectifier.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 0.7V to 5.5V - enables direct operation from single alkaline, NiMH, Li-Mn, or Li-ion cells without pre-regulation. |
| Quiescent Current (VIN) | 400nA - minimizes standby power loss in always-on wearable sensors and memory LCDs. |
| Quiescent Current (VOUT) | 600nA - preserves output rail integrity during ultra-low-power sleep states. |
| Output Voltage Range | Adjustable 1.8V–5.5V - supports programmable bias for diverse analog front-ends and display drivers. |
| Peak Switch Current Limit | 0.8A minimum - ensures stable 300mA output delivery from 3.3V to 5V conversion. |
| Efficiency at 10µA Load | Up to 75% - extends coin-cell battery life beyond 1 year in optical heart rate monitors. |
| Efficiency at 200mA Load | Up to 93% - maintains high power conversion efficiency across full operating range. |
| Shutdown Current | ≤0.5µA - guarantees near-zero system leakage when disabled, critical for long-term storage. |
Pinout & Package
TPS61099YFFT is packaged in a 6-ball, 1.23mm × 0.88mm DSBGA (WCSP) package with bottom-side thermal pad connected to GND. The compact footprint supports high-density PCB layouts in wearables and hearing aids.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 0.7–5.5V supply; connects to battery or energy-harvesting source; UVLO threshold at 0.7V (rising). |
| SW | Switch node | Drives external 2.2µH inductor; integrates synchronous rectifier; rated for 0.8A peak current. |
| EN | Enable control | Active-high logic input; 0.4V/1.2V thresholds; must not float; enables true shutdown with load isolation. |
| GND | Power ground | Reference for all internal circuits; connects to thermal pad; requires low-impedance PCB plane. |
| VOUT | Regulated output | Delivers 1.8–5.5V; supports down mode regulation and pass-through operation; includes OVP at 5.8V. |
| FB | Feedback input | Sets output voltage via resistor divider (adjustable version); tied to GND for fixed-output variants. |
Key Features
| Feature | Design Value |
|---|---|
| Hysteretic current-mode control | Enables automatic transition between CCM, DCM, and burst mode-maximizing efficiency across 10µA–300mA load range. |
| Down mode regulation | Maintains precise VOUT regulation even when VIN exceeds VOUT (up to VIN = VOUT + 0.5V), eliminating need for external LDO. |
| True shutdown with load disconnection | Disconnects VOUT from VIN via fully turned-off PMOS rectifier, reducing system standby current to ≤0.5µA. |
| Integrated overvoltage protection | Clamps output at 5.8V with 100–200mV hysteresis-prevents damage from feedback resistor misconfiguration. |
| Thermal shutdown with hysteresis | Disables operation above 150°C junction temperature and resumes at ~125°C-protects WCSP package in sealed enclosures. |
Applications
| Memory LCD Bias | Optical Heart Rate Monitor |
|---|---|
|
Use Scenario: Powering segment drivers and common electrode in bistable memory LCDs used in smartwatches and e-readers. IC Role / Device Role / Timing Role: Boost converter providing stable 5V bias rail from 3.0V coin cell, operating intermittently during screen updates. Use Value: 75% efficiency at 10µA load extends battery life to >2 years; ultra-low IQ prevents display ghosting during deep sleep. |
Use Scenario: Driving green/red LEDs in photoplethysmography (PPG) modules embedded in fitness bands and earbuds. IC Role / Device Role / Timing Role: High-efficiency current-source driver delivering pulsed 3.3V–5V LED bias synchronized with ADC sampling windows. Use Value: Burst-mode operation matches LED pulse timing; 400nA VIN IQ minimizes average current draw during inter-pulse intervals. |
| Wearable Sensor Hub | Low-Power Wireless Transceiver |
|
Use Scenario: Supplying regulated 3.3V to MEMS accelerometers, gyroscopes, and environmental sensors in hearables. IC Role / Device Role / Timing Role: Primary power rail generator supporting intermittent wake-up cycles and sensor fusion processing bursts. Use Value: Down mode allows seamless transition from battery (3.6V) to regulated 3.3V without brownout; soft-start prevents inrush-induced sensor reset. |
Use Scenario: Powering Bluetooth Low Energy (BLE) or proprietary 2.4GHz transceivers in medical patches and asset trackers. IC Role / Device Role / Timing Role: Efficient voltage booster enabling 3.0V operation from aging 2.8V Li-ion cells during TX/RX bursts. Use Value: 93% efficiency at 200mA supports 10ms transmit peaks without voltage droop; pass-through mode reduces losses when VIN ≥ VOUT. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS610994YFFT | Fixed 3.3V output; no FB pin required; 3.23–3.37V accuracy over temperature; same 400nA VIN IQ and WCSP package. | Eliminates external resistor divider but lacks output flexibility; suited for dedicated 3.3V rail generation. | Select when fixed 3.3V simplifies BOM and layout; avoid if adjustable output or multi-rail support is needed. |
| MAX17222ELT+T | 0.5µA IQ (typ), 0.7–5.5V input, 2.0–5.25V adjustable output, 0.5A switch limit, 2mm × 2mm WLP package. | Lower peak current and slightly higher IQ reduce maximum output capability; optimized for sub-100mA loads. | Consider for cost-sensitive, lower-current applications where 0.5A limit suffices and TI ecosystem independence is preferred. |
Compared with TPS61099YFFT, TPS610994YFFT offers plug-and-play 3.3V regulation but sacrifices adjustability, while MAX17222ELT+T provides alternative sourcing with marginally higher IQ and reduced current capability-making TPS61099YFFT optimal for designs requiring both ultra-low IQ and 0.8A peak support in minimal area.
Availability
TPS61099YFFT is available at Aetrix Electronics and suitable for wearable sensor hubs, optical heart rate monitors, memory LCD bias circuits, and low-power wireless transceivers requiring stable component supply with guaranteed long-term manufacturability.
Supply support for TPS61099YFFT 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 ICs, with decades of expertise in battery-efficient power conversion.
The TPS61099x family was engineered specifically for ultra-low-power portable electronics-prioritizing nanoscale quiescent current, miniature WCSP packaging, and intelligent mode transitions to maximize runtime from primary and rechargeable cells.
FAQ
What is the minimum input voltage required for TPS61099YFFT startup?
The TPS61099YFFT can start up from as low as 0.7V input voltage with a load greater than 3kΩ. Below this threshold, undervoltage lockout (UVLO) prevents operation until VIN rises above 0.7V (rising edge). Startup fails if the load draws excessive current before VOUT reaches ~1.6V, requiring either higher VIN or reduced load to initiate regulation.
How does TPS61099YFFT achieve 75% efficiency at 10µA load?
The TPS61099YFFT achieves 75% efficiency at 10µA by combining ultra-low 400nA quiescent current into VIN, hysteretic control that enters burst mode under light loads, and synchronous rectification that eliminates external diode losses. Its fixed-output versions further optimize efficiency by removing FB-divider current.
Does TPS61099YFFT support output voltages below 1.8V?
No, the TPS61099YFFT does not support output voltages below 1.8V. Its adjustable output range is strictly 1.8V to 5.5V, set by the internal 1.00V reference and FB divider ratio. Fixed-output variants begin at 1.8V (TPS610991), confirming 1.8V as the absolute minimum supported VOUT.
What happens to TPS61099YFFT when input voltage exceeds the regulated output?
When VIN exceeds VOUT, the TPS61099YFFT automatically enters down mode (if VIN < VOUT + 0.5V) to regulate VOUT by controlling the PMOS rectifier's gate, then transitions to pass-through mode (if VIN > VOUT + 0.5V) where VOUT ≈ VIN − (IL × DCRL + IL × RDS(on)). No external components are needed for this behavior.
Can TPS61099YFFT be used with ceramic output capacitors?
Yes, the TPS61099YFFT is fully compatible with ceramic output capacitors. The datasheet specifies 10µF–100µF X5R/X7R ceramics for COUT, and typical application circuits use 10µF ceramics. Their low ESR supports stable regulation in burst and down modes without requiring tantalum or aluminum electrolytics.
TPS61099YFFT 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
TPS61099YFFT FAQ
1.How can I place an order for TPS61099YFFT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61099YFFT 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 TPS61099YFFT reliable?
The price and inventory of TPS61099YFFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61099YFFT is usually 5 days.
3.What payment methods are accepted for TPS61099YFFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61099YFFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61099YFFT?
TPS61099YFFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61099YFFT 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 TPS61099YFFT?
For technical support, including TPS61099YFFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61099YFFT requirements.
6.How does Aetrix verify that TPS61099YFFT is sourced from the original manufacturer or authorized distributors?
All TPS61099YFFT 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 TPS61099YFFT meets industry standards.
7.What is the process for return or replacement of TPS61099YFFT?
All TPS61099YFFT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61099YFFT, 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 TPS61099YFFT part is unused and in its original packaging.
Return procedure for TPS61099YFFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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