LM3560
Synchronous boost flash driver w/ dual 1A high side current sources (2A Total flash current)
LM3560
- Dual High-Side Current Sources Allow for Grounded Cathode LED Operation
- Accurate and Programmable LED Current from 31.25 mA to 2 A
- Independent LED Current Source Programmability
- Up to 90% Efficient
- Ultra-Small Solution Size: < 26 mm2
- Four Operating Modes: Torch, Flash, Privacy Indicate, and Message Indicator
- 4-Bit ADC for VLED Monitoring
- LED Thermal Sensing and Current Scale-Back
- Hardware Flash and Torch Enable
- Dual Synchronization Inputs for RF Power Amplifier Pulse Events
- LED and Output Disconnect During Shutdown
- Open and Short LED Detection
- 400-kHz I2C-Compatible Interface
- Active Low Hardware Reset
- −40°C to +85°C Ambient Temperature Range
The LM3560 is a 2-MHz fixed frequency synchronous boost converter with two 1000-mA constant current drivers for high-current white LEDs. The dual high-side current sources allow for grounded cathode LED operation and can be tied together for providing flash currents at up to 2 A through a single LED. An adaptive regulation method ensures the current for each LED remains in regulation and maximizes efficiency.
The LM3560 is controlled via an I2C-compatible interface. Features include an internal 4-bit ADC to monitor the LED voltage, independent LED current control, a hardware flash enable allowing a logic input to trigger the flash pulse, dual TX inputs which force the flash pulse into a low-current torch mode allowing for synchronization to RF power amplifier events or other high-current conditions, and an integrated comparator designed to monitor an NTC thermistor and provide an interrupt to the LED current. Additionally, an active high HWEN input provides a hardware shutdown during system software failures.
The device is available in an ultra-small 16-pin DSBGA package. The 2-MHz switching frequency, overvoltage protection and adjustable current limit allow for the use of tiny, low-profile (1-µH and 2.2-µH) inductors and ceramic (10-µF) capacitors.
For all available packages, see the orderable addendum at the end of the data sheet.Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | LM3560 Synchronous Boost Flash Driver With Dual 1-A High-Side Current Sources (2-A Total Flash Current) datasheet (Rev. C) | PDF | HTML | 22 Nov 2016 |
| White paper | Common LED Functions and LED Driver Design Considerations | 21 Sep 2020 | ||
| Selection guide | Power Management Guide 2018 (Rev. R) | 25 Jun 2018 | ||
| User guide | AN-2057 LM3559/LM3560 Evaluation Board (Rev. A) | 30 Apr 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
LM3559EVAL — Evaluation Board for the LM3559
The LM3559/LM3560 Evaluation Board is designed to fully evaluate the LM3559 and LM3560 Synchronous Boost Converter with dual 900mA High Side Flash LED Drivers (LM3559) or dual 1000mA High Side Flash Drivers (LM3560) and I2C-Compatible Interface.
LM3560SW-LINUX — Linux Driver for LM3560
Linux Mainline Status
Available in Linux Main line: Yes
Available through git.ti.com: N/A
Supported Devices:
- lm3560
Linux Source Files
The files (...)
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| DSBGA (YZR) | 16 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Support & training
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