Specifications
| Type | Description |
|---|---|
| Part Number | LP5521 |
| Manufacturer | Texas Instruments |
| Product Type | SMD LED |
| Category | LED |
| Package / Case | DSBGA (20) 2.093 mm x 1.733 mm max; WQFN (24) 5.00 mm x 4.00 mm nominal |
| LED Channel Count | 3 channels; independent R, G, B current source outputs |
| LED Output Current Range | 0 to 25.5 mA per LED; typical application circuit, RGB LED outputs |
| Charge Pump Gain Modes | 1x and 1.5x; adaptive charge pump operation |
| LED Drive Efficiency | Up to 95%; adaptive charge pump LED drive |
| Shutdown Current | 200 nA typ; shutdown mode |
| LED Current Setting Resolution | 8 bit; independently programmable constant-current outputs |
| PWM Control Resolution | 8 bit; per LED channel PWM control |
| Typical LED Output Saturation Voltage | 50 mV typ; LED current source outputs |
| Current Matching | 1% typ; LED current source outputs |
| I2C Address Options | 4 pin-selectable addresses; ADDR_SEL0 and ADDR_SEL1 inputs |
| External Clock Input | 32 kHz; CLK_32K synchronization input |
| Required Input Capacitor | 1 uF; typical application circuit, CIN |
| Required Output Capacitor | 1 uF; typical application circuit, COUT |
| Charge Pump Flying Capacitors | 0.47 uF each; CFLY1 and CFLY2 in typical application circuit |
| Absolute Maximum Voltage | -0.3 to 6 V; VDD, VOUT, R, G, B pins |
| Absolute Maximum Logic Pin Voltage | -0.3 V to VDD + 0.3 V, 6 V maximum; logic pins |
| Maximum Junction Temperature | 125 degC; absolute maximum rating, TJ-MAX |
| Storage Temperature | -65 to 150 degC; Tstg absolute maximum rating |
| Thermal Shutdown Engage Temperature | 150 degC typ; internal thermal shutdown circuitry, TJ |
| Thermal Shutdown Disengage Temperature | 130 degC typ; internal thermal shutdown circuitry, TJ |
| ESD HBM Rating | +/-2000 V; human-body model per ANSI/ESDA/JEDEC JS-001 |
| ESD CDM Rating | +/-200 V; charged-device model per JEDEC JESD22-C101 |
| Recommended Supply Voltage | 2.7 to 5.5 V; VDD |
| Recommended Charge Pump Load Current | 0 to 100 mA; IOUT |
| Recommended Junction Temperature | -30 to 125 degC; TJ recommended operating condition |
| Recommended Ambient Temperature | -30 to 85 degC; TA recommended operating condition |
| Junction-to-Ambient Thermal Resistance | 70.7 degC/W DSBGA; 38.4 degC/W WQFN |
| Junction-to-Case Top Thermal Resistance | 0.5 degC/W DSBGA; 27.3 degC/W WQFN |
| Junction-to-Board Thermal Resistance | 12.1 degC/W DSBGA; 15.4 degC/W WQFN |
| Junction-to-Top Characterization Parameter | 0.2 degC/W DSBGA; 0.2 degC/W WQFN |
| Junction-to-Board Characterization Parameter | 12.0 degC/W DSBGA; 15.4 degC/W WQFN |
| Junction-to-Case Bottom Thermal Resistance | n/a DSBGA; 3.1 degC/W WQFN |
| Standby Supply Current | 0.2 uA typ; EN=0 pin, CHIP_EN=0 bit |
| Standby Supply Current Over Temperature | 2 uA max; EN=0 pin, CHIP_EN=0 bit, -30 degC < TA < 85 degC |
| Standby Supply Current With EN High | 1 uA typ; EN=1 pin, CHIP_EN=0 bit, external 32-kHz clock not running |
| Standby Supply Current With External Clock | 1.4 uA typ; EN=1 pin, CHIP_EN=0 bit, external 32-kHz clock running |
| Normal Mode Supply Current | 0.25 mA typ; charge pump and LED drivers disabled |
| Normal Mode Supply Current In 1x | 0.7 mA typ; charge pump in 1x mode, no load, LED drivers disabled |
| Datasheet Status | request_only |
Product Overview
The LP5521 is a Texas Instruments three-channel RGB LED driver with independent R, G, and B current source outputs. Each LED output supports 0 to 25.5 mA in the typical application circuit, with 8-bit current setting and 8-bit PWM control per LED channel. The LED current source outputs specify 50 mV typical saturation voltage and 1% typical current matching.
Power conversion is handled by an adaptive charge pump with 1x and 1.5x gain modes. The charge-pump LED drive is specified up to 95% efficiency, with recommended VDD operation from 2.7 to 5.5 V and recommended charge pump load current from 0 to 100 mA. The typical application circuit uses 1 uF input and output capacitors plus two 0.47 uF flying capacitors.
Package options include DSBGA (20) at 2.093 mm x 1.733 mm maximum and WQFN (24) at 5.00 mm x 4.00 mm nominal. System interface features include four pin-selectable I2C addresses using ADDR_SEL0 and ADDR_SEL1, plus a 32 kHz CLK_32K synchronization input.
Key Features
- Three independent RGB current source outputs
- 0 to 25.5 mA current range per LED
- 8-bit LED current setting resolution
- 8-bit PWM control on each LED channel
- Adaptive charge pump with 1x and 1.5x modes
- Up to 95% adaptive charge pump LED drive efficiency
- 200 nA typical shutdown current
- 50 mV typical LED output saturation voltage
- 1% typical current matching on LED outputs
- Four pin-selectable I2C addresses
Typical Applications
- RGB LED driving
- Three-channel LED control
- I2C-addressed LED modules
- 32 kHz synchronized lighting
- Low-current standby designs
- Charge-pump LED drive circuits
Procurement Notes
When requesting a quote for LP5521, 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 LED channels does the LP5521 provide?
The LP5521 provides 3 LED channels with independent R, G, and B current source outputs. Each RGB LED output supports 0 to 25.5 mA per LED in the typical application circuit.
What supply voltage range is recommended for LP5521?
The recommended VDD supply voltage range is 2.7 to 5.5 V over the operating free-air temperature range. The recommended charge pump load current range is 0 to 100 mA.
What packages are listed for the LP5521?
The LP5521 package options listed are DSBGA (20), measuring 2.093 mm x 1.733 mm maximum, and WQFN (24), measuring 5.00 mm x 4.00 mm nominal.
What charge pump modes does the LP5521 use?
The LP5521 uses adaptive charge pump operation with 1x and 1.5x gain modes. The extracted datasheet facts specify LED drive efficiency up to 95% for the adaptive charge pump LED drive.
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.