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Texas Instruments TPS61060DRBR
- Part No.:
- TPS61060DRBR
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 8-VDFN Exposed Pad
- Datasheet:
-
TPS61060DRBR.pdf
- Description:
- IC LED DRVR RGLTR PWM 400MA 8SON
- Quantity:
- Payment:
- Shipping:
Inventory:5,945
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Product details
Overview
TPS61060DRBR from Texas Instruments is a synchronous boost LED driver IC designed to deliver constant current to up to three white LEDs in series. It operates from 2.7 V to 6 V input, features 1-MHz fixed-frequency PWM control, integrated 400-mA N-channel MOSFET switch and synchronous P-channel rectifier, and provides digital (ILED pin) and PWM (EN pin) brightness control for portable backlighting applications.
For engineers reviewing the TPS61060DRBR datasheet, TPS61060DRBR pinout, TPS61060DRBR application, or TPS61060DRBR equivalent, key selection considerations include its 14-V overvoltage protection threshold, 250-mV/500-mV programmable feedback voltage, 8-pin 3×3-mm QFN package with exposed thermal pad, and support for 220-nF minimum output capacitance in space-constrained handheld designs.
Technical Context
The TPS61060DRBR implements peak-current-mode PWM control with a fixed 1-MHz switching frequency and internal loop compensation. Its architecture integrates an N-channel main switch (325–475 mA current limit) and synchronous P-channel rectifier, operating exclusively in continuous conduction mode to minimize noise and eliminate switch-node ringing.
It employs a 5-bit DAC on the ILED pin to adjust feedback voltage in 15.6-mV steps from 240 mV to 500 mV, enabling precise digital brightness control without continuous processor intervention. Overvoltage protection triggers at 14 V (min), short-circuit detection activates when VOUT falls below VIN – 0.7 V, and undervoltage lockout disables operation below 1.65 V.
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 alkaline input without external regulation. |
| Output Overvoltage Threshold | 14 V (min) - matches TPS61060 variant; enables use of low-voltage-rated (e.g., 16-V) ceramic output capacitors. |
| Feedback Voltage Options | 250 mV (ILED = high) or 500 mV (ILED = GND) - lower setting improves efficiency by ~2% for ≤3-LED strings. |
| Switching Frequency | 1 MHz (±20%) - permits compact 22-µH inductor and 220-nF ceramic output capacitor; simplifies EMI filtering. |
| LED Drive Capability | Up to 3 white LEDs in series - configured via Rs sense resistor; typical 20-mA output with 12-Ω Rs. |
| Internal MOSFETs | N-channel RDS(on) = 0.6 Ω @ 3.6 V; P-channel RDS(on) = 2.5 Ω - enables >80% efficiency at 3.6-V input, 10.8-V output, 20-mA load. |
| Digital Brightness Control | 5-bit DAC (32 steps, 15.6-mV/step) - allows discrete, low-power LED current adjustment without PWM overhead. |
Pinout & Package
TPS61060DRBR uses an 8-pin 3.00 mm × 3.00 mm QFN package (DRB) with exposed thermal diepad (PowerPAD™) that must be soldered to analog ground for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply | Accepts 2.7–6 V; connects to 1-µF input capacitor; powers internal bias circuitry and switches. |
| EN | Enable / PWM dimming input | Pulled high to enable; accepts PWM signals ≤1 kHz for analog brightness control; includes 300-kΩ internal pulldown. |
| GND | Analog ground reference | Reference for FB, EN, ILED; separate from PGND to minimize noise coupling into feedback path. |
| SW | Switch node | Connects to inductor and diode/capacitor network; carries high-frequency switching current; requires tight layout. |
| FB | Current-sense feedback input | Regulates LED current via external Rs; voltage set to 250 mV or 500 mV depending on ILED state. |
| OUT | Boost output | Drives LED anode string; clamped by 14-V OVP; connects directly to output capacitor (not across LEDs). |
| ILED | Digital brightness control | Configures feedback voltage and enables 5-bit DAC programming; logic high = 250-mV mode; pulsed low = stepwise adjustment. |
| PGND | Power ground return | High-current return path for SW and OUT; must be routed separately from AGND and tied at single point near VIN decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external Schottky diode; reduces conduction loss and improves efficiency by 5–10% vs. asynchronous boost. |
| Programmable overvoltage protection | 14-V threshold (TPS61060-specific) prevents damage during open-circuit or LED removal; hysteresis = 0.7 V. |
| Digital brightness interface | 5-bit DAC on ILED pin enables microcontroller-free, low-duty-cycle LED current adjustment-reducing system power and EMI. |
| Precharge current limiting | 100-mA start-up precharge prevents inrush into LED string; ensures reliable turn-on even with high forward-voltage LEDs. |
| Short-circuit protection | Activates when VOUT < VIN – 0.7 V; limits current to ~100 mA and enters safe precharge mode-protecting inductor and IC. |
Applications
| Backlit Keypad Lighting | Front Panel Indicator LEDs |
|---|---|
Use Scenario: Compact keypad modules in industrial HMIs requiring uniform, flicker-free illumination under variable battery voltage. IC Role / Device Role / Timing Role: Constant-current boost driver powering 2–3 series white LEDs; regulates current independent of forward-voltage drift and input sag. Use Value: Maintains consistent brightness across 2.7–4.2 V Li-ion discharge curve; 220-nF output cap enables ultra-thin PCB stackup. |
Use Scenario: Status indicators on medical handheld devices where visual clarity, low standby current, and EMI compliance are critical. IC Role / Device Role / Timing Role: Digitally controlled LED driver with shutdown isolation; disconnects LEDs from input during sleep mode. Use Value: 1-µA shutdown current extends battery life; 1-MHz switching avoids audible noise and RF interference with sensitive analog sensors. |
| Smartphone Front Camera Flash | Portable Barcode Scanner Illumination |
Use Scenario: Low-duty-cycle flash assist for front-facing cameras in space-limited smartphones with shared battery rail. IC Role / Device Role / Timing Role: Fast-response current source triggered by EN PWM; delivers precise 100–300-mA pulses with <75-µs step resolution. Use Value: Digital brightness control via ILED eliminates need for dedicated PWM timer; 500-mV feedback enables accurate current scaling. |
Use Scenario: High-reliability illumination for laser-based barcode scanners used in retail and logistics environments. IC Role / Device Role / Timing Role: Robust LED driver with integrated OVP and short-circuit protection-ensuring uninterrupted operation during accidental LED disconnection or cable fault. Use Value: 14-V OVP and thermal shutdown prevent field failures; QFN package withstands reflow and mechanical shock per IPC-A-610 Class 3. |
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 |
|---|---|---|---|
| TPS61060YZFR | Same electrical specs; uses 1.446 mm × 1.446 mm NanoFree™ (CSP) package instead of 3×3-mm QFN. | Lower thermal resistance (RθJA = 120.8°C/W vs. 47.6°C/W) but requires finer-pitch assembly; no exposed thermal pad. | Select YZFR only if board area is constrained and CSP assembly capability exists; DRBR preferred for thermal management and manufacturability. |
| TPS61061DRBR | Identical package and pinout; differs in OVP threshold (18 V min) and max LED count (4 vs. 3). | Supports higher-output-voltage strings (e.g., 4× white LEDs ≈ 14.3 V); not drop-in compatible due to different protection behavior. | Choose TPS61061DRBR only when driving ≥4 LEDs; TPS61060DRBR remains optimal for 3-LED strings requiring tighter OVP margin and lower cost. |
Compared with TPS61060YZFR and TPS61061DRBR, the TPS61060DRBR offers the best thermal performance in standard QFN assembly, precise 14-V OVP alignment for 3-LED strings, and lowest BOM cost-making it the recommended choice for volume production of compact, battery-powered LED lighting.
Availability
TPS61060DRBR is available at Aetrix Electronics and suitable for smartphone front-panel lighting, handheld medical device indicators, industrial HMI keypads, and portable barcode scanner illumination requiring stable component supply and long-term lifecycle continuity.
Supply support for TPS61060DRBR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The TPS6106x product line was engineered specifically for space-constrained, battery-powered LED backlighting and indicator applications-emphasizing high efficiency, integrated protection, and dual-mode (digital + PWM) brightness control without external components.
FAQ
What is the overvoltage protection threshold of the TPS61060DRBR?
The TPS61060DRBR has a guaranteed minimum overvoltage protection (OVP) threshold of 14 V, with typical activation at 14.5 V and maximum at 16 V. This threshold is fixed for the TPS61060 variant and is implemented to protect the internal 33-V-rated switch and allow use of low-voltage-rated (e.g., 16-V) ceramic output capacitors. The OVP hysteresis is 0.7 V, ensuring stable recovery after fault clearance.
How does the ILED pin function on the TPS61060DRBR?
The ILED pin on the TPS61060DRBR serves two roles: static configuration and dynamic programming. When held high (≥1.2 V), it sets the feedback voltage to 250 mV for higher efficiency; when grounded, it defaults to 500 mV. Pulling ILED low for 1–75 µs increments the 5-bit DAC, adjusting VFB in 15.6-mV steps; pulling low for 180–300 µs decrements it. Each step changes LED current proportionally.
Can the TPS61060DRBR drive more than three LEDs?
No-the TPS61060DRBR is specifically characterized and rated to drive up to three white LEDs in series, corresponding to its 14-V OVP threshold and internal current-limit design. Attempting to drive four or five LEDs risks exceeding the OVP trip point or violating the recommended operating conditions. For 4-LED strings, use TPS61061DRBR (18-V OVP); for 5-LED strings, use TPS61062DRBR (22.2-V OVP).
What is the minimum output capacitance supported by the TPS61060DRBR?
TPS61060DRBR is specified to operate stably with a minimum 220-nF ceramic output capacitor, as confirmed in Section 7.3 (Recommended Operating Conditions) and Figure 2–7 (efficiency curves). Use X5R or X7R dielectric to maintain capacitance across temperature and DC bias. Smaller values risk instability and excessive output ripple; larger values reduce ripple but increase cost and board area.
Does the TPS61060DRBR require external compensation components?
No-the TPS61060DRBR features fully internal loop compensation optimized for its fixed 1-MHz current-mode control architecture. No external compensation network (e.g., RC across FB) is required or recommended. The device achieves stable regulation across its full input range (2.7–6 V), output load (0–20 mA), and temperature range (–40°C to 85°C) using only the external Rs sense resistor, inductor, and input/output capacitors.
TPS61060DRBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-VDFN Exposed Pad
- 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:
- 14.5V
- 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-SON (3x3)
TPS61060DRBR FAQ
1.How can I place an order for TPS61060DRBR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61060DRBR 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 TPS61060DRBR reliable?
The price and inventory of TPS61060DRBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61060DRBR is usually 5 days.
3.What payment methods are accepted for TPS61060DRBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61060DRBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61060DRBR?
TPS61060DRBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61060DRBR 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 TPS61060DRBR?
For technical support, including TPS61060DRBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61060DRBR requirements.
6.How does Aetrix verify that TPS61060DRBR is sourced from the original manufacturer or authorized distributors?
All TPS61060DRBR 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 TPS61060DRBR meets industry standards.
7.What is the process for return or replacement of TPS61060DRBR?
All TPS61060DRBR units undergo pre-shipment inspection (PSI). If there is an issue with TPS61060DRBR, 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 TPS61060DRBR part is unused and in its original packaging.
Return procedure for TPS61060DRBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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