Specifications
| Type | Description |
|---|---|
| Part Number | TPS61194 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | 20-pin HTSSOP (PWP) with exposed thermal pad, 6.50 mm x 4.40 mm nominal body |
| Input Voltage Operating Range | 4.5 to 40 V; device feature summary |
| Maximum LED String Current per Channel | 100 mA; per current sink channel; outputs may be combined externally for higher current |
| Current Sink Matching | 1% typ; four high-precision current sinks |
| PWM Dimming Ratio | 10000:1; PWM input frequency = 100 Hz |
| Boost/SEPIC Converter Output Voltage | Up to 45 V; integrated converter for LED string power |
| Switching Frequency Range | 300 kHz to 2.2 MHz; Boost/SEPIC converter |
| Absolute Maximum Voltage on VIN, SW, FB | -0.3 to 50 V; over operating free-air temperature range; voltages with respect to GND |
| Absolute Maximum Voltage on OUT1, OUT2, OUT3, OUT4 | -0.3 to 45 V; over operating free-air temperature range; voltages with respect to GND |
| Absolute Maximum Voltage on LDO, SYNC, FSET, ISET, PWM, VDDIO/EN, FAULT | -0.3 to 5.5 V; over operating free-air temperature range; voltages with respect to GND |
| Ambient Temperature Range | -40 to 125 °C; absolute maximum rating, TA |
| Junction Temperature Range | -40 to 150 °C; absolute maximum rating, TJ |
| Storage Temperature Range | -65 to 150 °C; Tstg |
| Thermal Shutdown Threshold | 165 °C typ; engages at junction temperature TJ |
| Thermal Shutdown Hysteresis Release Temperature | 145 °C typ; disengages at junction temperature TJ |
| ESD Rating, HBM | ±2000 V; human-body model per JESD22-A114, JS-001 |
| ESD Rating, CDM All Other Pins | ±500 V; charged-device model per JESD22-C101 |
| ESD Rating, CDM Corner Pins | ±750 V; corner pins 1, 10, 11, 20; charged-device model per JESD22-C101 |
| Recommended VIN Voltage | 4.5 to 45 V; recommended operating conditions |
| Recommended SW Voltage | 0 to 45 V; recommended operating conditions |
| Recommended OUT1-OUT4 Voltage | 0 to 40 V; recommended operating conditions |
| Recommended FB, FSET, LDO, ISET, VDDIO/EN, FAULT Voltage | 0 to 5.25 V; recommended operating conditions |
| Recommended SYNC and PWM Voltage | 0 to VDDIO/EN; recommended operating conditions |
| Junction-to-Ambient Thermal Resistance | 44.2 °C/W; PWP HTSSOP, 20 pins; board-layout dependent |
| Junction-to-Case Top Thermal Resistance | 26.5 °C/W; PWP HTSSOP, 20 pins |
| Junction-to-Board Thermal Resistance | 22.4 °C/W; PWP HTSSOP, 20 pins |
| Junction-to-Top Characterization Parameter | 0.9 °C/W; PWP HTSSOP, 20 pins |
| Junction-to-Board Characterization Parameter | 22.2 °C/W; PWP HTSSOP, 20 pins |
| Junction-to-Case Bottom Thermal Resistance | 2.5 °C/W; PWP HTSSOP, 20 pins |
| Standby Supply Current | 4.5 µA typ, 20 µA max; device disabled, VDDIO/EN = 0 V, VIN = 12 V |
| FSET Resistor Range | 24 kΩ to 219 kΩ; resistor connected between FSET pin and ground |
| ISET Resistor Range | 24 kΩ to 129 kΩ; resistor connected between ISET pin and ground |
| Feedback Resistor Value Range | 5 kΩ to 150 kΩ; FB connected to middle of resistor divider between VOUT and ground |
| LDO Decoupling Capacitance | 1 µF; connect between LDO pin and noise-free GND |
| Datasheet Status | request_only |
Product Overview
The TPS61194 is a Texas Instruments four-channel LED driver for Power_Management designs requiring regulated LED string current. It integrates a boost/SEPIC converter for LED string power with an output voltage capability up to 45 V and a switching frequency range from 300 kHz to 2.2 MHz.
Each current sink channel supports up to 100 mA LED string current, with external channel combining noted for higher current configurations. The four current sinks provide 1% typical matching, and PWM dimming supports a 10000:1 ratio when the PWM input frequency is 100 Hz.
The device is supplied in a 20-pin HTSSOP (PWP) package with an exposed thermal pad and a 6.50 mm x 4.40 mm nominal body. Recommended operating conditions include VIN from 4.5 to 45 V, SW from 0 to 45 V, OUT1 to OUT4 from 0 to 40 V, and control pins within their specified logic-voltage ranges.
Key Features
- Four-channel LED driver for regulated LED string current
- 4.5 to 40 V input operating range
- Up to 100 mA per current sink channel
- Channels may be combined externally for higher current
- 1% typical matching across four current sinks
- 10000:1 PWM dimming ratio at 100 Hz
- Boost/SEPIC converter output voltage up to 45 V
- 300 kHz to 2.2 MHz converter switching range
- 4.5 µA typical standby current when disabled
- Thermal shutdown engages at 165 °C typical
Typical Applications
- Four-channel LED string driving
- Boost-powered LED strings
- SEPIC-powered LED strings
- PWM-dimmed LED lighting
- Externally combined LED current channels
- Wide-input LED driver designs
Procurement Notes
When requesting a quote for TPS61194, 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 does the TPS61194 support?
The TPS61194 feature summary specifies a 4.5 to 40 V input operating range. Recommended operating conditions list VIN from 4.5 to 45 V, while absolute maximum ratings for VIN, SW, and FB are -0.3 to 50 V.
How much LED current can each channel provide?
Each TPS61194 current sink channel supports up to 100 mA LED string current. The extracted datasheet facts also state that outputs may be combined externally when a higher current configuration is required.
What package is used for the TPS61194?
The TPS61194 is provided in a 20-pin HTSSOP (PWP) package with an exposed thermal pad. The nominal body size is 6.50 mm x 4.40 mm, and the listed junction-to-ambient thermal resistance is 44.2 °C/W.
What dimming and matching performance is specified?
The TPS61194 specifies 1% typical current sink matching across four high-precision current sinks. Its PWM dimming ratio is 10000:1 when the PWM input frequency is 100 Hz.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 8, 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.