Specifications
| Type | Description |
|---|---|
| Part Number | TLC5917 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Component Type | Power_IC |
| Package / Case | SOIC-16 9.90 mm x 3.91 mm; PDIP-16 19.30 mm x 6.35 mm; TSSOP-16 5.00 mm x 4.40 mm |
| Output Channels | 8 constant-current sink outputs |
| Output Current Adjustment | Set through single external resistor |
| Constant Output Current Range | 3 mA to 120 mA per channel |
| Global Current Gain Resolution | 256 steps |
| Channel-to-Channel Current Accuracy | < +/-3% maximum |
| IC-to-IC Current Accuracy | < +/-6% maximum |
| Maximum Clock Frequency | 30 MHz |
| Supply Voltage Support | 3.3 V or 5 V |
| Maximum LED Voltage | 20 V |
| Overtemperature Detection | Supported |
| Open-Load Detection | Supported |
| Short-to-GND Detection | Supported |
| Short-to-VLED Detection | Supported |
| Error Register | One single error register; one error bit per channel |
| Pin Count | 16 pins |
| CLK Pin | Pin 3, input; clock input for data shift on rising edge |
| GND Pin | Pin 1; ground for control logic and current sink |
| LE(ED1) Pin | Pin 4, input with internal pulldown; data strobe and control input for error detection/current adjust modes |
| OE(ED2) Pin | Pin 13, input with internal pullup; active-low output enable and control input for error detection/current adjust modes |
| OUT0 to OUT7 Pins | Pins 5 to 12, outputs; constant-current outputs |
| R-EXT Pin | Pin 15, input; external resistor to ground sets current for all outputs |
| SDI Pin | Pin 2, input; serial data input to shift register |
| SDO Pin | Pin 14, output; serial data output to next driver IC or microcontroller |
| VDD Pin | Pin 16, input; supply voltage pin |
| Absolute Maximum Supply Voltage | 0 V to 7 V |
| Absolute Maximum Input Voltage | -0.4 V to VDD + 0.4 V |
| Absolute Maximum Output Voltage | -0.5 V to 20 V |
| Absolute Maximum Clock Frequency | 25 MHz |
| Absolute Maximum Output Current | 120 mA |
| Absolute Maximum GND Terminal Current | 960 mA |
| Operating Free-Air Temperature | -40°C to 125°C |
| Operating Junction Temperature | -40°C to 150°C |
| Storage Temperature | -55°C to 150°C |
| ESD Rating HBM | +/-1500 V |
| ESD Rating CDM | +/-500 V |
| Recommended Supply Voltage | 3 V to 5.5 V |
| Recommended Output Pin Voltage | 20 V maximum |
| Recommended Output Current Low-Voltage Condition | 3 mA at VO >= 0.6 V, DC test circuit |
| Recommended Output Current High-Current Condition | 120 mA at VO >= 1 V, DC test circuit |
| SDO High-Level Output Current Source | -1 mA, SDO shorted to GND |
| SDO Low-Level Output Current Sink | 1 mA, SDO shorted to VCC |
| High-Level Input Voltage | 0.7 x VDD to VDD for CLK, OE(ED2), LE(ED1), and SDI |
| Low-Level Input Voltage | 0 V to 0.3 x VDD for CLK, OE(ED2), LE(ED1), and SDI |
| Thermal Resistance Junction-to-Ambient | 87.4°C/W SOIC-16; 51.8°C/W PDIP-16; 114.8°C/W TSSOP-16 |
| Thermal Resistance Junction-to-Case Top | 48.1°C/W SOIC-16; 39.1°C/W PDIP-16; 35.9°C/W TSSOP-16 |
| Thermal Resistance Junction-to-Board | 44.4°C/W SOIC-16; 31.8°C/W PDIP-16; 59.8°C/W TSSOP-16 |
| Junction-to-Top Characterization Parameter | 12.5°C/W SOIC-16; 23.9°C/W PDIP-16; 1.3°C/W TSSOP-16 |
| Junction-to-Board Characterization Parameter | 44.2°C/W SOIC-16; 31.7°C/W PDIP-16; 59.2°C/W TSSOP-16 |
| Output Leakage Current at VDD=3 V | 0.5 uA typical at TJ=25°C; 2 uA typical at TJ=125°C, VOH=17 V |
| SDO High-Level Output Voltage | VDD - 0.4 V minimum at VDD=3 V, SDO, IOL=-1 mA |
| SDO Low-Level Output Voltage | 0.4 V maximum at VDD=3 V, SDO, IOH=1 mA |
| Output Current 1 at VDD=3 V | 26 mA typical, VOUT=0.6 V, Rext=720 ohm, CG=0.992 |
| Output Current Error Die-to-Die at 26 mA | +/-3% typical, +/-6% maximum at VDD=3 V, VO=0.6 V, Rext=720 ohm, TJ=25°C |
| Output Current Skew Channel-to-Channel at 26 mA | +/-1.5% typical, +/-3% maximum at VDD=3 V, VO=0.6 V, Rext=720 ohm, TJ=25°C |
| Output Current 2 at VDD=3 V | 52 mA typical, VO=0.8 V, Rext=360 ohm, CG=0.992 |
| Output Current Error Die-to-Die at 52 mA | +/-2% typical, +/-6% maximum at VDD=3 V, VO=0.8 V, Rext=360 ohm, TJ=25°C |
| Output Current Skew Channel-to-Channel at 52 mA | +/-1.5% typical, +/-3% maximum at VDD=3 V, VO=0.8 V, Rext=360 ohm, TJ=25°C |
| Output Current vs Output Voltage Regulation, Typical | +/-0.1%/V typical at VDD=3 V, VO=1 V to 3 V, IO=26 mA |
| Output Current vs Output Voltage Regulation, Maximum | +/-1%/V maximum at VDD=3.0 V to 5.5 V, IO=26 mA or 120 mA |
| OE(ED2) Pullup Resistance | 500 kohm typical at VDD=3 V |
| LE(ED1) Pulldown Resistance | 500 kohm typical at VDD=3 V |
| Overtemperature Shutdown | 150°C min, 175°C typ, 200°C max |
| Restart Temperature Hysteresis | 15°C typical |
| Open-Error Detection Threshold Current | 0.5 x IOUT,target %, IOUT,target=3 mA to 120 mA |
| Short-Error Detection Trigger Threshold Voltage | 2.5 V min, 2.7 V typ, 3.1 V max; TLC5917 only |
| Short-Error Detection Return Threshold Voltage | 2.2 V typical; TLC5917 only |
| Supply Current with Rext Open at VDD=3 V | 5 mA typical, 10 mA maximum |
| Supply Current with Rext 720 ohm at VDD=3 V | 8 mA typical, 14 mA maximum |
| Supply Current with Rext 360 ohm at VDD=3 V | 11 mA typical, 18 mA maximum |
| Supply Current with Rext 180 ohm at VDD=3 V | 16 mA typical, 22 mA maximum |
| Output Leakage Current at VDD=5.5 V | 0.5 uA typical at TJ=25°C; 2 uA typical at TJ=125°C, VOH=17 V |
| Output Current 1 at VDD=5.5 V | 26 mA typical, VOUT=0.6 V, Rext=720 ohm, CG=0.992 |
| Output Current 2 at VDD=5.5 V | 52 mA typical, VO=0.8 V, Rext=360 ohm, CG=0.992 |
| Supply Current with Rext Open at VDD=5.5 V | 6 mA typical, 10 mA maximum |
| Supply Current with Rext 720 ohm at VDD=5.5 V | 11 mA typical, 14 mA maximum |
| Supply Current with Rext 360 ohm at VDD=5.5 V | 13 mA typical, 18 mA maximum |
| Supply Current with Rext 180 ohm at VDD=5.5 V | 19 mA typical, 24 mA maximum |
| Datasheet Status | request_only |
Product Overview
The TLC5917 is a Texas Instruments 8-channel constant-current LED sink driver for LED drive channels requiring serial data control and matched current sinks. It integrates 8 constant-current outputs, OUT0 through OUT7, with current adjustment set through a single external resistor connected at R-EXT. The recommended output current range is 3 mA to 120 mA per channel, with 256-step programmable global current gain.
The device supports 3.3 V or 5 V logic operation, with recommended VDD from 3 V to 5.5 V. OUT0 to OUT7 support up to 20 V, and input thresholds are specified as 0.7 x VDD to VDD for high level and 0 V to 0.3 x VDD for low level. Serial interface pins include SDI, SDO, CLK, LE(ED1), and OE(ED2).
Package choices include SOIC-16, PDIP-16, and TSSOP-16. The 16-pin pinout includes GND, VDD, R-EXT, serial data, clock, latch/output-enable control, and eight output pins. Detection features cover overtemperature, open-load, short-to-GND, and TLC5917-only short-to-VLED conditions.
Key Features
- 8 constant-current sink outputs
- 3 mA to 120 mA per-channel current range
- Output current set through one external resistor
- 256-step programmable global current gain
- 30 MHz maximum clock frequency in feature summary
- 3 V to 5.5 V recommended VDD range
- 20 V maximum recommended OUT0 to OUT7 voltage
- Open-load, short, and overtemperature detection supported
- Single error register with one bit per channel
- SOIC-16, PDIP-16, and TSSOP-16 package options
Typical Applications
- LED channel current sinking
- Serial-controlled LED outputs
- Cascaded LED driver IC stages
- 3.3 V or 5 V LED systems
- 20 V LED output rails
- Fault-monitored LED driver channels
Procurement Notes
When requesting a quote for TLC5917, 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 LED and optoelectronic sourcing, brightness bin, wavelength or color temperature bin, forward voltage range, viewing angle, moisture sensitivity level and soldering process limits may affect final selection, availability and lead time.
FAQ
How many outputs does the TLC5917 provide?
The TLC5917 provides 8 constant-current sink outputs. OUT0 through OUT7 are assigned to pins 5 through 12 and are specified as constant-current outputs for LED sink-driver operation.
How is output current adjusted on the TLC5917?
Output current for all channels is set through a single external resistor connected from the R-EXT pin to ground. The recommended constant output current range is 3 mA to 120 mA per channel.
Which fault detection functions are supported by TLC5917?
The TLC5917 supports overtemperature detection, open-load detection, short-to-GND detection, and short-to-VLED detection. Detection conditions are reported through one single error register with one error bit per channel.
What supply and output voltage ranges are specified?
The recommended VDD operating range is 3 V to 5.5 V, with feature support for 3.3 V or 5 V systems. The recommended output pin voltage for OUT0 through OUT7 is 20 V maximum.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: July 25, 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.