GUI for evaluation module (EVM)
Data sheet
LM3632A
- Drives up to Two Strings of Typically Eight LEDs
in Series- Integrated Backlight Boost with 29-V Maximum
Output Voltage - Two Low-Side Constant-Current LED Drivers
with 25-mA Maximum Output Current
- Integrated Backlight Boost with 29-V Maximum
- Backlight Efficiency Up to 90%
- 11-Bit Exponential or Linear Dimming
- External PWM Input for CABC Backlight
Operation - LCD Bias Efficiency > 85%
- Programmable Positive LCD bias, 4-V to 6-V, 50-
mA Maximum Output Current - Programmable Negative LCD bias, –4-V to –6-V,
50-mA Maximum Output Current - 1.5-A Flash LED Boost
- Flash Efficiency > 85%
- 2.7-V to 5-V Input Voltage Range
The LM3632A integrates the WLED drivers for both the backlight of the LCD panel and the camera flash along with the bias power for the LCD panel into one device. The device has all the safety features required in LED drivers with up to 90% efficiency and bias positive/negative power rails achieving 1.5% accuracy. Capable of driving up to 16 backlight LEDs, the device is ideal for small- to medium-size displays. A 1.5-A constant-current LED driver powered by a synchronous boost converter can be used for flash applications. The high-side flash current source allows for grounded cathode LED operation.
A high level of integration and programmability allows the LM3632A to address a variety of applications without the need for hardware changes.
Technical documentation
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View all 4 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM3632A Single-Chip Backlight With Bias Power and 1.5-A Flash LED Driver datasheet (Rev. A) | PDF | HTML | 10 Sep 2015 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Application note | Analog PWM Dimming in White-LED Drivers | 21 Dec 2016 | ||
| EVM User's guide | LM3632A Evaluation Module User's Guide | 24 Mar 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
LM3632EVM — LM3632EVM Single-Chip Backlight + Bias Power + 1.5-A Flash LED Driver
The LM3632EVM aids in evaluation of the LM3632 Single-Chip Backlight + Bias Power + 1.5-A Flash LED Driver.
The LM3632 contains 3 major blocks:
- A high efficiency backlight driver capable of driving 2 LED strings of up to 8 LEDs per string.
- A set of positive and negative bias supplies of programmable (...)
User guide: PDF
Driver or library
LM3532SW-LINUX — Linux Driver for LM3532
The Linux driver supports the LMU(Lighting Management Unit) devices for smartphone handsets. The Linux driver supports communication through the I2C bus and interfaces with various sub-systems.
Linux Mainline Status
Available in Linux Main line: No
Available through git.ti.com: (...)
Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
| Package | Pins | Download |
|---|---|---|
| DSBGA (YFF) | 30 | View options |
Ordering & quality
Information included:
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Information included:
- Fab location
- Assembly location
Support & training
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