My Inquiry
My Account
Texas Instruments TPS61161DRVT
- Part No.:
- TPS61161DRVT
- Manufacturer:
- Texas Instruments
- Category:
- LED Drivers
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
TPS61161DRVT.pdf
- Description:
- IC LED DRV RGLTR PWM 700MA 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,501
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS61161DRVT from Texas Instruments is a high-efficiency white LED boost driver IC with integrated 40-V/0.7-A N-channel MOSFET, 600-kHz fixed-frequency PWM control, 38-V open-LED protection, and dual-mode brightness control (PWM or EasyScale™ one-wire digital interface). It regulates LED current via 200-mV feedback reference and supports up to 10-series LEDs in portable media backlighting.
For engineers reviewing the TPS61161DRVT datasheet, TPS61161DRVT pinout, TPS61161DRVT application, or TPS61161DRVT equivalent, key selection criteria include input voltage range (2.7–18 V), open-LED protection threshold (38 V), FB reference accuracy (±2%), dimming interface flexibility, and thermal performance in the 2-mm × 2-mm WSON-6 package with exposed thermal pad.
Technical Context
This device implements current-mode PWM control with slope compensation for stable operation above 50% duty cycle. The error amplifier (transconductance: 240–400 μmho, output resistance: 6 MΩ) drives the COMP pin to regulate FB at 200 mV using an external RC compensation network.
Open-LED protection monitors both SW node voltage (>38 V typical) and FB voltage (<100 mV) over eight consecutive switching cycles before disabling the FET. Soft-start ramps FB voltage in 32 steps (213 μs/step), while startup current limit is halved for first 5 ms to limit inrush.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 18 V - supports single-cell Li-ion (3.0–4.2 V) and multi-cell alkaline/NiMH inputs without pre-regulation. |
| Open LED Protection | 38 V (typical) - enables safe operation with up to 10-series white LEDs (e.g., 3.2 V × 10 + 0.2 V = 32.2 V < 38 V). |
| Feedback Reference | 200 mV ±2% - minimizes power loss in RSET; enables precise LED current setting (e.g., 20 mA with 10 Ω). |
| Switching Frequency | 600 kHz (fixed) - allows compact 22-μH inductor and low-ESR ceramic capacitors; reduces output ripple and EMI. |
| Efficiency | Up to 90% - achieved at 20 mA output with 3.6-V input and 8-LED string; critical for battery runtime in portable devices. |
| Quiescent Current | 1.8 mA - ensures low standby power draw during active operation; complements 1-μA shutdown current. |
| Thermal Resistance | RθJA = 96.1°C/W - requires PCB thermal pad connection and vias for reliable operation at full load in 85°C ambient. |
Pinout & Package
TPS61161DRVT uses a 6-pin WSON package (2 mm × 2 mm, 0.5-mm pitch) with exposed thermal pad soldered to analog ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.7–18 V supply; connects to input capacitor (≥1 μF) and inductor high-side terminal. |
| SW | Switch node | Drives inductor low-side; monitored for open-LED detection; maximum 40-V rating limits external component stress. |
| FB | Current-sense feedback | Regulated to 200 mV; connects to RSET resistor between LED cathode and GND to set LED current. |
| GND | Ground reference | Analog ground return for FB, COMP, and internal circuitry; must be low-impedance path to thermal pad. |
| CTRL | Multi-function control | Enables device (logic high), initiates shutdown (≥2.5 ms low), accepts PWM dimming signal, or hosts EasyScale™ digital commands. |
| COMP | Error amplifier output | Connects to RC compensation network (e.g., 10 kΩ + 220 pF) to stabilize loop response and prevent oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual dimming interface | PWM (5–100 kHz) or EasyScale™ one-wire protocol - eliminates need for external DAC or dedicated PWM generator; supports 32-step pseudo-logarithmic brightness control. |
| No-audible-noise dimming | Internal FB reference modulation - avoids pulsing LED current at audio frequencies; prevents capacitor squeal in thin-film displays and handhelds. |
| Built-in soft start | 32-step FB ramp (213 μs/step) + 5-ms half-current limit - limits inrush to ≤400 mA during power-up; protects input source and extends capacitor life. |
| Integrated protection | 38-V open-LED shutdown, 2.2-V UVLO with 70-mV hysteresis, and 160°C thermal shutdown with 15°C hysteresis - reduces need for external fault monitoring circuitry. |
| High-efficiency topology | 90% peak efficiency at 20 mA - achieved via low-RDS(on) (0.3–0.6 Ω) switch and optimized gate drive; extends battery life in portable media players. |
Applications
| Cellular Phone Backlight | Portable Media Player Display |
|---|---|
Use Scenario: Driving 6–8 white LEDs in series for main LCD backlight in slim smartphones with Li-ion battery input. IC Role / Device Role / Timing Role: Boost converter with constant-current regulation; provides stable 20-mA LED current independent of forward voltage variation across LEDs. Use Value: Enables uniform brightness and color consistency across display; 38-V OVP accommodates aging-induced VF rise without latch-off. |
Use Scenario: Powering 10-white-LED string in 4.3-inch TFT panel of MP3/video player with 3.6-V nominal battery. IC Role / Device Role / Timing Role: High-frequency (600 kHz) current-mode controller; delivers regulated current while minimizing inductor size and EMI emissions. Use Value: Achieves >85% efficiency at 20 mA, extending playback time by ~12% versus lower-efficiency alternatives; WSON-6 footprint saves board area. |
| Ultra-Mobile PC Keyboard Illumination | GPS Receiver Status Display |
Use Scenario: Driving 4–6 LEDs for backlit keyboard in sub-12-inch UMPC with variable input (3.0–4.2 V). IC Role / Device Role / Timing Role: Dimmable constant-current source with programmable brightness via microcontroller's EasyScale™ interface. Use Value: Reduces MCU GPIO count and firmware overhead; enables smooth 32-step dimming without PWM timer resource consumption. |
Use Scenario: Supplying 20-mA current to 3-white-LED status indicator in automotive-grade GPS receiver operating from 12-V supply with LDO pre-regulation. IC Role / Device Role / Timing Role: Input-voltage-tolerant LED driver; withstands 18-V transients and maintains regulation during cold-crank conditions. Use Value: 2.7–18-V input range eliminates need for additional pre-regulator; 38-V OVP prevents false shutdown during load-dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar white LED boost driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61160DRVT | 26-V open-LED protection; identical pinout, package, and functional interface. | Rated for ≤6-series LEDs (e.g., 6 × 3.2 V + 0.2 V = 19.4 V < 26 V); lower OVP threshold reduces margin for LED VF drift. | Select when driving ≤6 LEDs and cost sensitivity outweighs OVP headroom requirements. |
| MAX16832ATA+T | 40-V OVP, 1.2-MHz switching, but requires external MOSFET and lacks integrated EasyScale™ interface. | Supports higher output voltages and currents; suited for industrial LED signage, not space-constrained portable devices. | Choose when system-level flexibility (e.g., discrete FET selection, adjustable frequency) is prioritized over integration and footprint. |
Compared with TPS61161DRVT, TPS61160DRVT offers identical functionality at lower OVP margin-ideal for 4–6 LED strings-while MAX16832ATA+T trades integration for design flexibility and higher voltage capability, requiring additional components and layout effort.
Availability
TPS61161DRVT is available at Aetrix Electronics and suitable for cellular phone backlighting, portable media player displays, ultra-mobile PC illumination, GPS receiver indicators, and other compact LED lighting applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for TPS61161DRVT 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 decades of expertise in high-reliability power conversion ICs.
The TPS6116x product line was designed specifically for space-constrained portable electronics requiring efficient, dimmable white LED backlighting with minimal external components and robust fault protection.
FAQ
What is the maximum number of white LEDs the TPS61161DRVT can drive in series?
The TPS61161DRVT supports up to 10 white LEDs in series, based on its 38-V open-LED protection threshold and 200-mV feedback reference. Assuming a worst-case forward voltage of 3.2 V per LED, the total string voltage is (10 × 3.2 V) + 0.2 V = 32.2 V, which remains safely below the 38-V OVP limit. Exceeding this count risks premature shutdown during normal operation or LED aging.
How does the TPS61161DRVT implement PWM dimming without audible noise?
The TPS61161DRVT avoids audible noise by modulating the internal 200-mV feedback reference voltage-not the LED current-using the PWM signal applied to the CTRL pin. An internal low-pass filter converts the PWM duty cycle into a DC-equivalent reference (e.g., 50% duty → 100 mV), enabling true analog dimming of the regulated LED current. This eliminates high-frequency current pulsing that excites ceramic capacitor piezoelectric effects.
Can the TPS61161DRVT operate from a 3.3-V supply?
Yes, the TPS61161DRVT operates reliably from a 3.3-V supply, well within its 2.7–18-V input range. At 3.3 V, it can drive up to 4–6 white LEDs (depending on VF) while maintaining >85% efficiency. The undervoltage lockout (2.2 V typical) ensures stable startup, and the 600-kHz switching frequency keeps external component sizes minimal even at low input voltage.
What is the role of the COMP pin on the TPS61161DRVT?
The COMP pin on the TPS61161DRVT is the output of the transconductance error amplifier and serves as the control node for loop compensation. It must be connected to an external RC network (e.g., 10 kΩ resistor + 220 pF capacitor) between COMP and GND to stabilize the current-mode control loop, prevent oscillation, and ensure phase margin >45° across temperature and load conditions.
Is the TPS61161DRVT pin-compatible with the TPS61160DRVT?
Yes, the TPS61161DRVT is pin-compatible with the TPS61160DRVT: both use the same 6-pin WSON-6 package, identical pinout (VIN, SW, FB, GND, CTRL, COMP), and share all electrical and functional specifications except open-LED protection threshold (38 V vs. 26 V). PCB designs can interchange them without layout changes, provided the LED string voltage remains within the selected device's OVP margin.
TPS61161DRVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WDFN 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):
- 18V
- Voltage - Output:
- 38V
- Current - Output / Channel:
- 700mA (Switch)
- Frequency:
- 600kHz
- Dimming:
- PWM
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (2x2)
TPS61161DRVT FAQ
1.How can I place an order for TPS61161DRVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS61161DRVT 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 TPS61161DRVT reliable?
The price and inventory of TPS61161DRVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS61161DRVT is usually 5 days.
3.What payment methods are accepted for TPS61161DRVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS61161DRVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS61161DRVT?
TPS61161DRVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS61161DRVT 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 TPS61161DRVT?
For technical support, including TPS61161DRVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS61161DRVT requirements.
6.How does Aetrix verify that TPS61161DRVT is sourced from the original manufacturer or authorized distributors?
All TPS61161DRVT 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 TPS61161DRVT meets industry standards.
7.What is the process for return or replacement of TPS61161DRVT?
All TPS61161DRVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS61161DRVT, 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 TPS61161DRVT part is unused and in its original packaging.
Return procedure for TPS61161DRVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS61161DRVT Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
