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Texas Instruments TPS61062YZFR
- Part No.:
- TPS61062YZFR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS61062YZFR.pdf
- Description:
- IC LED DRV RGLTR PWM 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,283
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Product details
Overview
TPS61062YZFR from Texas Instruments is a constant-current synchronous boost LED driver IC designed to power up to five white LEDs in series from a 2.7 V to 6 V input supply. It delivers regulated LED current via external sense resistor RS, supports digital (ILED pin) and PWM (EN pin) brightness control, and integrates overvoltage protection (22.2 V min), short-circuit detection, and 1-MHz fixed-frequency operation for compact filter design. It is used in backlighting for handheld displays requiring precise current regulation and low-noise operation.
For engineers reviewing the TPS61062YZFR datasheet, TPS61062YZFR pinout, TPS61062YZFR application, or TPS61062YZFR equivalent, key selection considerations include its 22.2-V OVP threshold (specific to TPS61062), 250-mV/500-mV programmable feedback voltage, 5-bit digital dimming interface, integrated 400-mA N-channel switch, and NanoFree™ DSBGA-8 package with thermal diepad.
Technical Context
The TPS61062YZFR employs peak-current-mode PWM control with a fixed 1-MHz switching frequency and internal loop compensation. Its synchronous rectification uses an integrated N-channel MOSFET (0.6–0.9 Ω RDS(ON) at 3.6 V) and P-channel MOSFET (2.5–3.7 Ω RDS(ON)) to minimize conduction loss and enable continuous conduction mode operation.
It implements dual dimming: EN pin accepts PWM signals ≤1 kHz for analog-like intensity control, while ILED pin enables 5-bit digital programming (32 steps, 15.6 mV/step) of feedback voltage (250 mV to 500 mV), directly scaling LED current without processor intervention. Overvoltage protection triggers at 22.2 V (min), matching its role in 5-LED strings with higher forward voltage sums.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6.0 V - Supports single-cell Li-ion, Li-polymer, or triple-AA battery inputs without external regulation. |
| Output Overvoltage Threshold | 22.2 V (min) - Matches 5-white-LED string requirements (e.g., 3.6 V × 5 = 18 V), enabling use of low-voltage-rated 25-V output capacitors. |
| Feedback Voltage Options | 250 mV (ILED = high) or 500 mV (ILED = GND) - Lower 250-mV setting reduces sense resistor power loss, improving efficiency by ~2% in low-LED-count configurations. |
| Switching Frequency | 1.0 MHz (±20%) - Enables use of small 22-µH inductors and 220-nF ceramic output capacitors, minimizing board area and EMI filtering complexity. |
| Internal Power Switch | 400-mA rated N-channel MOSFET (0.6–0.9 Ω at 3.6 V) - Handles peak inductor current for 20-mA LED strings across full input range without external FET. |
| Digital Dimming Resolution | 5-bit DAC (32 steps, 15.6 mV/step) - Provides monotonic, glitch-free LED current adjustment via simple ILED pin pulse timing, eliminating need for MCU PWM peripherals. |
| Short-Circuit Protection | Precharge current limit of 95 mA (at 3.6 V) - Limits inrush and fault current when output is shorted, protecting inductor and IC during abnormal conditions. |
Pinout & Package
TPS61062YZFR uses an 8-ball NanoFree™ wafer-chip-scale package (DSBGA-8), measuring 1.446 mm × 1.446 mm, with exposed thermal diepad connected to GND for enhanced thermal performance (RθJB = 59.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 2.7–6.0 V; powers internal circuitry and high-side switch; requires 1-µF ceramic bypass capacitor. |
| EN | Enable / PWM dimming input | Pulled high to operate; accepts ≤1-kHz PWM for analog brightness control; internal 300-kΩ pulldown ensures safe shutdown when floating. |
| GND | Analog ground reference | Reference for FB, ILED, and internal error amplifier; must be low-impedance connection to PCB ground plane. |
| SW | Switch node | Connects to inductor and internal N/P-channel MOSFETs; carries high di/dt; requires tight layout to minimize EMI and ringing. |
| FB | Current-sense feedback input | Regulates voltage across RS to 250 mV or 500 mV; bias current <1.5 µA minimizes RS error contribution. |
| OUT | Boost output | Drives LED anode; connects to cathodes of series-connected LEDs; includes integrated OVP and short-circuit detection. |
| ILED | Digital brightness control input | Configures feedback voltage and enables 5-bit DAC programming via timed low pulses (1–75 µs for up, 180–300 µs for down). |
| PGND | Power ground return | Low-impedance return path for inductor and switch currents; separate from analog GND but tied at single point near VIN capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated OVP with 22.2-V threshold | Protects internal 33-V-rated switch and enables cost-effective 25-V output capacitors for 5-LED strings. |
| Dual dimming interface (EN + ILED) | EN supports simple PWM; ILED enables ultra-low-power digital control-processor can sleep between brightness updates. |
| Synchronous boost architecture | Eliminates external Schottky diode; achieves up to 80% efficiency with 22-µH inductor and 220-nF output capacitor. |
| Start-up precharge current | 95 mA (at 3.6 V) limits inrush into LED string and output cap, preventing false OVP triggering during cold start. |
| NanoFree™ DSBGA-8 package | 1.446 mm × 1.446 mm footprint with thermal diepad reduces PCB area >70% vs. 3×3-mm QFN while maintaining thermal performance. |
Applications
| Smartphone Backlight | Digital Camera Flash |
|---|---|
Use Scenario: Driving five-series white LEDs for main display backlight in space-constrained smartphones. IC Role / Device Role / Timing Role: Constant-current boost controller regulating LED current to 20 mA with 1-MHz switching to minimize EMI near RF sections. Use Value: 22.2-V OVP matches 5-LED forward voltage margin; NanoFree package saves >0.5 mm² PCB area; digital dimming reduces MCU GPIO usage. |
Use Scenario: Providing controlled current pulses to high-brightness white LED arrays in compact digital still cameras. IC Role / Device Role / Timing Role: High-efficiency current source delivering up to 400-mA peak switch current for brief flash durations. Use Value: Precharge current limiting prevents inductor saturation during rapid on/off cycles; 1-MHz operation allows fast transient response to flash trigger signals. |
| Portable Medical Display | Industrial Handheld Scanner |
Use Scenario: Illuminating monochrome or color LCDs in battery-powered medical devices requiring stable, flicker-free brightness. IC Role / Device Role / Timing Role: Precision current regulator with 250-mV feedback option to maximize efficiency and extend battery life. Use Value: 5-bit digital dimming enables 32 discrete brightness levels without PWM-induced EMI; shutdown current <10 µA preserves battery during idle. |
Use Scenario: Powering LED aiming/illumination modules in rugged handheld barcode scanners operating from 3.7-V Li-ion cells. IC Role / Device Role / Timing Role: Robust LED driver with integrated short-circuit and overvoltage protection for field-reliable operation. Use Value: Advanced short-circuit protection limits fault current to 95 mA, preventing thermal runaway during accidental LED wire shorts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar constant-current LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61062DRBR | Same electrical specs, but in 3×3-mm QFN-8 package with PowerPAD™ thermal pad; RθJA = 47.6°C/W vs. 120.8°C/W for YZF. | Better thermal performance in high-power or high-ambient-temp designs; larger footprint (9 mm² vs. 2.09 mm²) limits use in ultra-compact devices. | Select DRBR when thermal dissipation >350 mW is required; choose YZFR for minimal PCB area and acceptable junction rise under 20-mA load. |
| LM3407MMX/NOPB | Asynchronous boost LED driver; 1.25-V feedback voltage; no integrated OVP; max 3-LED support; 1.6-MHz switching. | Lacks 5-LED capability and 22.2-V OVP; requires external Schottky diode; lower integration increases BOM count and board area. | Use only if 3-LED strings suffice and external OVP is added; not suitable as drop-in replacement due to different feedback architecture and pinout. |
Compared with TPS61062DRBR, TPS61062YZFR trades thermal headroom for extreme miniaturization-ideal for wearables and thin smartphones-while LM3407MMX/NOPB offers higher frequency but sacrifices integration, protection, and multi-LED scalability critical to TPS61062YZFR's target applications.
Availability
TPS61062YZFR is available at Aetrix Electronics and suitable for smartphone backlighting, portable medical displays, digital camera flash circuits, and industrial handheld scanner illumination requiring stable component supply and long-term production continuity.
Supply support for TPS61062YZFR 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, embedded processing, and digital signal processing technologies, with leadership in power management ICs for portable electronics.
The TPS6106x family was designed specifically for space-constrained, battery-powered LED backlighting and flash applications-emphasizing high integration, dual dimming flexibility, and robust protection for consumer and industrial handheld devices.
FAQ
What is the overvoltage protection threshold for TPS61062YZFR?
The TPS61062YZFR has a minimum overvoltage protection (OVP) threshold of 22.2 V, with typical and maximum values of 23.5 V and 25 V respectively. This OVP level is specific to the TPS61062 variant and is optimized for driving five-series white LEDs, allowing safe use of low-voltage-rated output capacitors while protecting the internal 33-V switch. The OVP hysteresis is 0.7 V.
How does digital brightness control work on TPS61062YZFR?
TPS61062YZFR implements digital brightness control via its ILED pin using a built-in 5-bit DAC. Pulling ILED high sets feedback voltage to 250 mV for reduced LED current; pulling it low sets 500 mV for full current. Further fine-tuning is achieved by applying timed low pulses (1–75 µs for increment, 180–300 µs for decrement) to program 32 discrete steps (15.6 mV/step). This eliminates continuous MCU PWM overhead.
What package type and dimensions does TPS61062YZFR use?
TPS61062YZFR uses the NanoFree™ wafer-chip-scale package (DSBGA-8), with nominal body size 1.446 mm × 1.446 mm and 0.5-mm ball pitch. It features an exposed thermal diepad that must be soldered to analog ground. This package reduces PCB area by over 70% compared to the 3×3-mm QFN alternative (TPS61062DRBR) while maintaining functional compatibility.
Can TPS61062YZFR drive more than five white LEDs?
No-TPS61062YZFR is specified and characterized to drive up to five white LEDs in series, based on its 22.2-V minimum OVP threshold and internal current-limit design. Attempting to drive six or more LEDs risks exceeding the OVP trip point during normal operation or transients, causing intermittent shutdown. For higher LED counts, a driver with ≥28-V OVP (e.g., TPS61165) is required.
What is the recommended output capacitor value for TPS61062YZFR?
The TPS61062YZFR is qualified to operate with output capacitors as low as 220 nF (X5R/X7R ceramic), enabling ultra-compact designs. Larger values (up to 4.7 µF) reduce output voltage ripple but increase cost and board area. TI recommends placing the capacitor directly between OUT and PGND-never across the LED string-to minimize EMI and ensure stable OVP and short-circuit detection behavior.
TPS61062YZFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.7V
- Voltage - Supply (Max):
- 6V
- Voltage - Output:
- 23.5V
- Current - Output / Channel:
- 400mA (Switch)
- Frequency:
- 1MHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DSBGA
TPS61062YZFR FAQ
1.How can I place an order for TPS61062YZFR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61062YZFR 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 TPS61062YZFR reliable?
The price and inventory of TPS61062YZFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61062YZFR is usually 5 days.
3.What payment methods are accepted for TPS61062YZFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61062YZFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61062YZFR?
TPS61062YZFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61062YZFR 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 TPS61062YZFR?
For technical support, including TPS61062YZFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61062YZFR requirements.
6.How does Aetrix verify that TPS61062YZFR is sourced from the original manufacturer or authorized distributors?
All TPS61062YZFR 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 TPS61062YZFR meets industry standards.
7.What is the process for return or replacement of TPS61062YZFR?
All TPS61062YZFR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61062YZFR, 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 TPS61062YZFR part is unused and in its original packaging.
Return procedure for TPS61062YZFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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