Texas Instruments LP8545SQ/NOPB LED Drivers
Six channel high-efficiency LED backlight driver for notebooks with flexible ext/int FET control
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LP8545SQ/NOPB
Detailed Description
Six channel high-efficiency LED backlight driver for notebooks with flexible ext/int FET control
Package
24-WFQFN Exposed Pad
Key Features
Package / Case: 24-WFQFN Exposed Pad; Frequency: 156kHz, 312kHz, 625kHz, 1250kHz
Lifecycle Status
Active
RoHS State
RoHS Compliant
Datasheet
LP8545SQ/NOPB Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LP8545SQ/NOPB LED Drivers technical specifications.
General
RoHS
Yes
Number of Channels
6
Package / Case
24-WFQFN Exposed Pad
Operating Temperature
-30°C ~ 85°C (TA)
Supply Voltage
2.7V ~ 22V
Lifecycle Status
Active
Application
Backlight
Frequency
156kHz, 312kHz, 625kHz, 1250kHz
Type
DC DC Regulator
Topology
Step-Up (Boost)
Alternate Parts Comparison (LP8545SQ/NOPB vs LP3943ISQ/NOPB vs LP3944ISQ/NOPB vs LP3944ISQX)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad | 24-WFQFN Exposed Pad |
| Operating Temperature | -30°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 2.7V ~ 22V | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Active | Active | Active | Obsolete |
| Current Output Channel | 50mA | 25mA | 25mA | 25mA |
| Dimming | PWM | I²C, SMBus | I²C, SMBus | I²C, SMBus |
| Internal Switch S | Yes | Yes | Yes | Yes |
| Number of Outputs | 6 | 16 | 8 | 8 |
| Package | WQFN (RTW)-24 | WQFN (RTW)-24 | WQFN (RTW)-24 | 24-WFQFN Exposed Pad |
| Topology | Step-Up (Boost) | Shift Register | Shift Register | Shift Register |
| Type | DC DC Regulator | Power Switch | Power Switch | Power Switch |
| Action |
Cross Reference
Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .
Suggested replacements
MC34844AEPNXP SemiconductorsNXP
IC LED DRVR RGLTR DIM 80MA 32QFN
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