Specifications
| Type | Description |
|---|---|
| Part Number | TPS61161 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 6-pin WSON (DRV), 2 mm x 2 mm, exposed thermal pad |
| Component Type | Power_IC |
| Input Voltage Range | 2.7-18 V; recommended operating condition |
| Output Voltage Range | VIN to 38 V; recommended operating condition, TPS61161 |
| Open LED Protection Threshold | 37 V min, 38 V typ, 39 V max; measured on SW pin, TPS61161 |
| Feedback Regulation Voltage | 196 mV min, 200 mV typ, 204 mV max; VIN=3.6 V, CTRL=VIN, TA=-40°C to 85°C |
| Feedback Reference Accuracy | ±2%; 200 mV reference voltage |
| Switching Frequency | 500 kHz min, 600 kHz typ, 700 kHz max; VIN=3.6 V, CTRL=VIN, TA=-40°C to 85°C |
| PWM Dimming Frequency | 5-100 kHz; recommended operating condition |
| Minimum PWM Input Pulse Width | 50 ns; recommended operating condition |
| Recommended Inductor | 10-22 µH; recommended operating condition |
| Recommended Input Capacitor | 1 µF; recommended operating condition |
| Recommended Output Capacitor | 0.47-10 µF; recommended operating condition |
| Operating Ambient Temperature | -40°C to 85°C; recommended operating condition |
| Operating Junction Temperature | -40°C to 125°C; recommended operating condition |
| Absolute Maximum VIN Voltage | -0.3 V to 20 V; with respect to ground |
| Absolute Maximum CTRL Voltage | -0.3 V to 20 V; with respect to ground |
| Absolute Maximum FB and COMP Voltage | -0.3 V to 3 V; with respect to ground |
| Absolute Maximum SW Voltage | -0.3 V to 40 V; with respect to ground |
| Storage Temperature | -65°C to 150°C; absolute maximum rating |
| Absolute Maximum Junction Temperature | 150°C; absolute maximum rating |
| Operating Quiescent Current | 1.8 mA typ; device PWM switching, no load |
| Shutdown Current | 1 µA max; CTRL=GND, VIN=4.2 V |
| Undervoltage Lockout Threshold | 2.2 V min, 2.5 V max; VIN falling |
| Undervoltage Lockout Hysteresis | 70 mV typ; VIN falling/recovery |
| CTRL Logic High Voltage | 1.2 V min; VIN=2.7 V to 18 V |
| CTRL Logic Low Voltage | 0.4 V max; VIN=2.7 V to 18 V |
| CTRL Pulldown Resistance | 400 kΩ min, 800 kΩ typ, 1600 kΩ max; CTRL pin |
| PWM Feedback Reference at 50 mV | 47 mV min, 50 mV typ, 53 mV max; brightness control, VFB=50 mV |
| PWM Feedback Reference at 20 mV | 17 mV min, 20 mV typ, 23 mV max; brightness control, VFB=20 mV |
| Feedback Input Bias Current | 2 µA max; VFB=200 mV |
| Maximum Duty Cycle | 93% min, 95% typ; VFB=100 mV, measured on switching FET drive signal |
| Minimum On Pulse Width | 40 ns typ; power switch |
| N-Channel MOSFET On-Resistance at 3.6 V | 0.3 Ω typ, 0.6 Ω max; VIN=3.6 V |
| N-Channel MOSFET On-Resistance at 3 V | 0.7 Ω max; VIN=3 V |
| N-Channel MOSFET Current Limit | 0.56 A min, 0.7 A typ, 0.84 A max; D=Dmax |
| Startup Current Limit | 0.4 A typ; D=Dmax |
| Thermal Shutdown Threshold | 160°C typ; thermal shutdown |
| Thermal Shutdown Hysteresis | 15°C typ; thermal shutdown recovery |
| Datasheet Status | request_only |
Product Overview
The TPS61161 is a Texas Instruments white LED boost driver categorized under Power_Management. It is supplied in a compact 6-pin WSON (DRV), 2 mm x 2 mm package with an exposed thermal pad for board-level assembly layouts requiring a small power IC footprint.
Recommended operating conditions specify a 2.7-18 V input voltage range and, for TPS61161, an output voltage range from VIN to 38 V. Regulation is based on a 200 mV typical feedback voltage with 196 mV minimum and 204 mV maximum limits over VIN=3.6 V, CTRL=VIN, and TA=-40°C to 85°C. The device also specifies ±2% feedback reference accuracy.
Power conversion parameters include 500 kHz minimum, 600 kHz typical, and 700 kHz maximum switching frequency, 93% minimum and 95% typical maximum duty cycle, and an internal N-channel MOSFET current limit of 0.56 A minimum, 0.7 A typical, and 0.84 A maximum. PWM dimming input operation is specified from 5-100 kHz with a 50 ns minimum PWM input pulse width.
Key Features
- 2.7-18 V recommended input voltage operating range
- VIN to 38 V TPS61161 output voltage range
- 37-39 V open LED protection threshold on SW pin
- 200 mV typical feedback regulation voltage with ±2% accuracy
- 500-700 kHz switching frequency over specified test conditions
- 5-100 kHz PWM dimming frequency input range
- 50 ns minimum PWM input pulse width
- 10-22 µH recommended inductor operating range
- 1 µF recommended input capacitor value
- 0.47-10 µF recommended output capacitor range
- 1 µA maximum shutdown current with CTRL grounded
- 160°C typical thermal shutdown with 15°C hysteresis
Typical Applications
- White LED boost driver circuits
- PWM-dimmed LED backlights
- Low-voltage input LED strings
- Compact WSON power designs
- CTRL-pin brightness control designs
- Boost converters requiring open LED protection
Procurement Notes
When requesting a quote for TPS61161, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What input voltage range is specified for TPS61161 operation?
TPS61161 has a recommended operating input voltage range of 2.7-18 V. Absolute maximum VIN voltage is specified separately as -0.3 V to 20 V with respect to ground.
What output voltage range does the TPS61161 support?
For TPS61161, the recommended operating output voltage range is VIN to 38 V. The open LED protection threshold measured on the SW pin is 37 V minimum, 38 V typical, and 39 V maximum.
How is brightness control specified for the TPS61161?
PWM dimming frequency is specified from 5-100 kHz with a 50 ns minimum PWM input pulse width. PWM feedback references include 50 mV typical and 20 mV typical operating points for brightness control.
What external passive component values are recommended?
The recommended inductor range is 10-22 µH. The recommended input capacitor is 1 µF, and the recommended output capacitor range is 0.47-10 µF under recommended operating conditions.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 12, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.