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LP8860BQVFPRQ1
Texas Instruments
IC LED DRVR CTRLR PWM 32HLQFP
2688 Pcs New Original In Stock
LED Driver IC 4 Output DC DC Controller Step-Up (Boost) PWM Dimming 150mA 32-HLQFP (7x7)
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5.0 / 5.0
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LP8860BQVFPRQ1
Product Overview
1321634
DiGi Electronics Part Number
LP8860BQVFPRQ1-DGManufacturer
Texas Instruments
LP8860BQVFPRQ1
Description
IC LED DRVR CTRLR PWM 32HLQFPInventory
2688 Pcs New Original In Stock
LED Driver IC 4 Output DC DC Controller Step-Up (Boost) PWM Dimming 150mA 32-HLQFP (7x7)
Quantity
Minimum 1
Minimum 1
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LP8860BQVFPRQ1 Technical Specifications
Category
Power Management (PMIC), LED Drivers
Packaging
-
Series
-
Product Status
Active
Type
DC DC Controller
Topology
Step-Up (Boost)
Internal Switch(s)
No
Number of Outputs
4
Voltage - Supply (Min)
3V
Voltage - Supply (Max)
48V
Voltage - Output
48V
Current - Output / Channel
150mA
Frequency
100kHz ~ 2.2MHz
Dimming
PWM
Applications
Backlight, Lighting
Operating Temperature
-40°C ~ 125°C (TA)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
32-PowerLQFP
Supplier Device Package
32-HLQFP (7x7)
Base Product Number
LP8860
Datasheet & Documents
Manufacturer Product Page
LP8860BQVFPRQ1 Specifications
HTML Datasheet
LP8860BQVFPRQ1-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
296-45405-6
LP8860BQVFPRQ1-DG
-296-45405-1-DG
296-45405-2
296-45405-1
Standard Package
1,000
Alternative Parts
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DiGi PART NUMBER
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SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
DiGi Electronics consistently offers cost-effective options with a welcoming and professional service team.
de desembre 02, 2025
My shipping experience was fantastic – fast, reliable, and hassle-free.
de desembre 02, 2025
The company’s assurance of quality makes them a preferred choice in the industry.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the LP8860BQVFPRQ1 in a high-temperature automotive backlight application, and how can I mitigate thermal stress on the 32-HLQFP package?
The LP8860BQVFPRQ1 is rated for -40°C to 125°C ambient temperature, but sustained operation near the upper limit—especially in enclosed automotive environments—can cause localized heating due to switching losses in the external MOSFETs and inductors. Since the IC itself lacks an internal switch, thermal stress primarily affects the PCB layout and surrounding components. To mitigate this, ensure adequate copper pour under the 32-HLQFP package for heat spreading, use thermal vias, and maintain sufficient spacing from heat-sensitive components. Additionally, validate junction temperatures via thermal modeling and consider derating output current by 10–15% at >105°C ambient to preserve long-term reliability under AEC-Q100 Grade 1 conditions.
Can the LP8860BQVFPRQ1 safely replace the LP8860CQVFPRQ1 in a 12V input, 48V output LED string configuration, and what design changes might be required?
While both the LP8860BQVFPRQ1 and LP8860CQVFPRQ1 are part of the same family and share core functionality, the 'B' variant typically includes enhanced fault protection features such as improved open/short LED detection thresholds. Direct pin-for-pin replacement is often feasible, but you must verify the feedback network and dimming control circuitry, as minor differences in reference voltage or PWM response timing may affect dimming linearity. Also, confirm that your boost converter’s inductor saturation current and output capacitor ESR are compatible with the B variant’s slightly different switching behavior. Always re-validate efficiency and stability under full load before deployment.
How should I configure the LP8860BQVFPRQ1 for PWM dimming in a multi-zone automotive display where EMI compliance is critical, and what layout practices minimize noise coupling?
For low-EMI PWM dimming with the LP8860BQVFPRQ1, use a dimming frequency above 200 Hz (ideally 1–5 kHz) to avoid visible flicker while staying below resonant frequencies of nearby circuits. Route the PWM input signal differentially if possible, and keep it away from switching nodes (e.g., SW pins of external boost converters). Place a small RC filter (e.g., 1 kΩ + 100 pF) near the DIM pin to suppress high-frequency noise. Crucially, maintain a tight loop area between the IC, external MOSFET, diode, and input/output capacitors—this reduces radiated emissions. Follow TI’s reference layout for the 32-HLQFP package, ensuring ground planes are solid beneath the device to minimize ground bounce and improve AEC-Q100 EMI resilience.
What are the failure modes to consider when driving long LED strings with the LP8860BQVFPRQ1, and how does output overvoltage protection interact with open-load conditions?
When driving long or high-voltage LED strings, an open-circuit condition can cause the boost output to rise toward the 48V absolute maximum rating, risking damage to downstream components. The LP8860BQVFPRQ1 includes built-in overvoltage protection (OVP), but its threshold must be carefully set via the feedback divider to avoid nuisance tripping during transient load steps. If OVP triggers frequently, it may indicate inadequate headroom in the feedback network or excessive parasitic inductance in the output path. Always include a transient voltage suppressor (TVS) diode rated for >50V at the output as a secondary safeguard, and test open-load recovery under worst-case line and temperature conditions to ensure robust operation per automotive reliability standards.
Is the LP8860BQVFPRQ1 suitable for battery-powered automotive lighting applications with wide input voltage swings (e.g., 6V to 36V), and what efficiency trade-offs should I expect at low input voltages?
Yes, the LP8860BQVFPRQ1 supports a 3V to 48V input range, making it viable for battery-powered systems experiencing load-dump or cold-crank scenarios (e.g., dropping to 6V). However, at low input voltages (below 9V), the required duty cycle for boosting to 48V increases significantly, raising conduction losses in the external MOSFET and inductor DC resistance. This can reduce system efficiency by 8–12% compared to mid-range inputs (~12V). To optimize performance, select a low-RDS(on) MOSFET with fast switching characteristics and use a high-saturation-current inductor with low DCR. Also, enable pulse-skipping or burst-mode operation (if supported by your firmware) during light-load conditions to improve battery life without compromising AEC-Q100 compliance.
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LP8860BQVFPRQ1 CAD Models
Texas Instruments LP8860BQVFPRQ1 PCB symbols & footprints
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