Texas Instruments LP8543SQ LED Drivers
IC LED DRIVER RGLTR DIM 24WQFN
Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
LP8543SQ
Detailed Description
IC LED DRIVER RGLTR DIM 24WQFN
Package
24-WFQFN Exposed Pad
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
LP8543SQ Datasheet
Quick Jump:
Technical Specifications
Texas Instruments LP8543SQ LED Drivers technical specifications.
General
Package / Case
24-WFQFN Exposed Pad
Mounting Type
Surface Mount
Operating Temperature
-40°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
Current Output Channel
60mA
Alternate Parts Comparison (LP8543SQ 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 | -40°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 |
| 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 |
| 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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