Specifications
| Type | Description |
|---|---|
| Part Number | LP8552 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Component Type | Power_IC |
| Package / Case | DSBGA (YZR), 25 pins, 2.49 mm x 2.49 mm max body size |
| Input Voltage Range | 2.7-22 V; feature summary, supports 1x to 5x cell Li-Ion batteries |
| Recommended Input Voltage | 5.5-22 V; VIN, Figure 27 |
| Recommended VIN + VLDO Voltage | 4.5-5.5 V; low-voltage application, Figure 31 |
| VDDIO Operating Voltage | 1.65-5 V; recommended operating conditions |
| Output/SW/FB Operating Voltage | 0-40 V; V(OUT1...OUT6, SW, FB), recommended operating conditions |
| Operating Junction Temperature | -30 to 125 °C; recommended operating conditions |
| Operating Ambient Temperature | -30 to 85 °C; recommended operating conditions |
| Absolute Maximum VIN | -0.3 to 24 V; absolute maximum ratings |
| Absolute Maximum VLDO | -0.3 to 6 V; absolute maximum ratings |
| Absolute Maximum Logic Pin Voltage | -0.3 to 6 V; VSYNC, PWM, EN, SCLK, SDA |
| Absolute Maximum FAULT Pin Voltage | -0.3 to VDDIO + 0.3 V; FAULT logic pin |
| Absolute Maximum Analog Pin Voltage | -0.3 to 6 V; FILTER, VDDIO, ISET, FSET |
| Absolute Maximum OUT/SW/FB Voltage | -0.3 to 44 V; OUT1...OUT6, SW, FB |
| Maximum Junction Temperature | 125 °C; absolute maximum ratings |
| Thermal Shutdown Threshold | 150 °C typ; thermal shutdown engages |
| Thermal Shutdown Release Threshold | 130 °C typ; thermal shutdown disengages |
| Storage Temperature Range | -65 to 150 °C; handling ratings |
| HBM ESD Rating | -2 to 2 kV; ANSI/ESDA/JEDEC JS-001, all pins |
| CDM ESD Rating | -200 to 200 V; JEDEC JESD22-C101, all pins |
| Machine Model ESD Rating | -1 to 1 kV; handling ratings |
| Junction-to-Ambient Thermal Resistance | 40-73 °C/W; DSBGA 25-pin package, board-layout dependent |
| Standby Supply Current | 1 µA; internal LDO disabled, EN = low, PWM = low |
| Normal Mode Supply Current at 5-MHz PLL | 3 mA; LDO enabled, boost enabled, no LED output current |
| Normal Mode Supply Current at 10-MHz PLL | 3.7 mA; LDO enabled, boost enabled, no LED output current |
| Normal Mode Supply Current at 20-MHz PLL | 4.7 mA; LDO enabled, boost enabled, no LED output current |
| Normal Mode Supply Current at 40-MHz PLL | 6.7 mA; LDO enabled, boost enabled, no LED output current |
| Internal Oscillator Frequency Accuracy at 25°C | -4% to 4%; TA = 25°C |
| Internal Oscillator Frequency Accuracy Over Temperature | -7% to 7%; -30°C <= TA <= 85°C |
| Internal LDO Voltage | 4.5 V min, 5 V typ, 5.5 V max; over full operating ambient temperature range |
| Internal LDO External Loading | 5 mA; electrical characteristics |
| Boost Switch On Resistance | 0.12 ohm typ; ISW = 0.5 A |
| Boost Maximum Output Voltage | 40 V; boost converter electrical characteristics |
| Maximum Continuous Load Current at 9 V Battery | 450 mA; 9 V <= VBATT, VOUT = 35 V |
| Maximum Continuous Load Current at 6 V Battery | 300 mA; 6 V <= VBATT, VOUT = 35 V |
| Maximum Continuous Load Current at 3 V Battery | 180 mA; 3 V <= VBATT, VOUT = 25 V |
| Boost Conversion Ratio | 10; VOUT/VIN, fSW = 1.25 MHz |
| Switching Frequency, BOOST_FREQ = 00 | 156 kHz |
| Switching Frequency, BOOST_FREQ = 01 | 312 kHz |
| Switching Frequency, BOOST_FREQ = 10 | 625 kHz |
| Switching Frequency, BOOST_FREQ = 11 | 1250 kHz |
| Overvoltage Protection Voltage | VBOOST + 1.6 V; boost converter electrical characteristics |
| Minimum Switch Pulse Width | 50 ns; no load |
| Startup Time | 6 ms; from boost activation until VOUT crosses 90% of target value |
| SW Pin Current Limit, BOOST_IMAX = 0 | 1.4 A |
| SW Pin Current Limit, BOOST_IMAX = 1 | 2.5 A |
| LED Outputs | 6 current sink outputs; OUT1 through OUT6 |
| LED Current Resolution | 8-bit; LED outputs |
| PWM Resolution | 8 to 13 true bits plus 1 to 3 dithering bits; steady state and brightness changes |
| Datasheet Status | request_only |
Product Overview
The LP8552 is a Texas Instruments LED backlight driver for Power_Management designs using boosted LED strings. It integrates six current sink outputs, identified as OUT1 through OUT6, with 8-bit LED current resolution. PWM dimming supports 8 to 13 true bits plus 1 to 3 dithering bits during steady-state operation and brightness changes.
The device supports a 2.7 V to 22 V input range for 1x to 5x cell Li-Ion battery sources. Recommended VIN operation is 5.5 V to 22 V, while a low-voltage application uses a recommended VIN + VLDO range of 4.5 V to 5.5 V. VDDIO operates from 1.65 V to 5 V, and OUT, SW, and FB pins are specified for 0 V to 40 V operation.
The LP8552 is supplied in a 25-pin DSBGA (YZR) package with a maximum body size of 2.49 mm x 2.49 mm. Thermal data lists 40°C/W to 73°C/W junction-to-ambient resistance depending on board layout, with -30°C to 125°C operating junction temperature and -30°C to 85°C ambient operation.
Key Features
- 2.7 V to 22 V input voltage range
- Supports 1x to 5x cell Li-Ion batteries
- Six current sink LED outputs, OUT1 through OUT6
- 8-bit LED current resolution for LED outputs
- PWM resolution includes true bits and dithering bits
- 40 V boost converter maximum output voltage
- Selectable 156 kHz to 1250 kHz switching frequency
- 1.4 A or 2.5 A SW pin current limit
- 1 µA standby current with EN and PWM low
- 25-pin DSBGA package, 2.49 mm square maximum body
Typical Applications
- LED backlight driver circuits
- Li-Ion battery backlight systems
- Six-channel LED current sink designs
- Boosted LED string supplies
- Low-voltage VIN plus VLDO applications
- PWM dimmed backlight assemblies
Procurement Notes
When requesting a quote for LP8552, 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 type of device is the LP8552?
The LP8552 is a Texas Instruments Power_Management LED backlight driver with six current sink outputs. The extracted datasheet facts identify OUT1 through OUT6, 8-bit LED current resolution, and PWM resolution with true-bit and dithering-bit operation.
What input voltage range does the LP8552 support?
The LP8552 supports a 2.7 V to 22 V input voltage range in the feature summary for 1x to 5x cell Li-Ion batteries. Recommended VIN operation is listed as 5.5 V to 22 V.
What package is used for the LP8552?
The LP8552 is supplied in a DSBGA (YZR) package with 25 pins. The extracted package data lists a maximum body size of 2.49 mm x 2.49 mm.
What are the LP8552 boost converter limits?
The boost converter maximum output voltage is 40 V. Extracted electrical facts also list a 10 VOUT/VIN conversion ratio at 1.25 MHz, overvoltage protection at VBOOST + 1.6 V, and selectable SW current limits of 1.4 A or 2.5 A.
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.