Texas Instruments LP8543SQE LED Drivers
IC LED DRIVER RGLTR DIM 24WQFN
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LP8543SQE
Detailed Description
IC LED DRIVER RGLTR DIM 24WQFN
Package
24-WFQFN Exposed Pad
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
LP8543SQE Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LP8543SQE LED Drivers technical specifications.
General
RoHS
Yes
Package / Case
24-WFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-30°C ~ 85°C (TA)
Supply Voltage
5.5V ~ 22V
Lifecycle Status
Obsolete
Frequency
625kHz ~ 1.25MHz
Type
DC DC Regulator
Internal Switch S
Yes
Output Voltage
40V
Alternate Parts Comparison (LP8543SQE 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 |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -30°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Supply Voltage | 5.5V ~ 22V | 2.3V ~ 5.5V | 2.3V ~ 5.5V | 2.3V ~ 5.5V |
| RoHS | Yes | Yes | Yes | Yes |
| Lifecycle Status | Obsolete | Active | Active | Obsolete |
| Applications | Backlight | Camera Flash | Camera Flash | Camera Flash |
| Current Output Channel | 60mA | 25mA | 25mA | 25mA |
| Dimming | PWM | I²C, SMBus | I²C, SMBus | I²C, SMBus |
| Internal Switch S | Yes | Yes | Yes | Yes |
| Number of Outputs | 7 | 16 | 8 | 8 |
| Package | 24-WFQFN Exposed Pad | WQFN (RTW)-24 | WQFN (RTW)-24 | 24-WFQFN Exposed Pad |
| 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
More Parts in LED Drivers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.
