ALED6001 Datasheet, PDF (1/26 Pages) STMicroelectronics – Automotive-grade PWM-dimmable single channel LED driver

ALED6001
Automotive-grade PWM-dimmable single channel LED driver with
integrated boost controller
Datasheet - production data
TSSOP-16
Features
• AECQ100 qualification
• Switching controller section
– 5.5 V to 36 V input voltage range
– Very low shutdown current: I_SHDN < 10 µA
– Internal +5 V LDO for gate driver supply
– Internal +3.3 V LDO for device supply
– Fixed frequency peak current mode control
– Adjustable (100 kHz to 1 MHz) switching
frequency
– External synchronization for multi-device
applications
– High performance external MOSFET driver
– Cycle-by-cycle external MOSFET OCP
– Fixed internal soft-start
– Programmable output OVP
– Boost, buck-boost and SEPIC topologies
supported
– Thermal shutdown with autorestart
– Output short-circuit detection
• LED control section
– Up to 60 V output voltage
– Constant current control loop
– High-side output current sensing circuitry
– 30 to 300 mV differential sensing voltage
– ± 4% output current reference accuracy
– Output overcurrent protection
– Sensing resistor failure protection
– PWM dimming with auxiliary series switch
– Analog dimming
Applications
• Automotive exterior lighting
• Daytime running lights
• High and low beam lights
• Fog lights
• Position lights / blinkers
Description
The ALED6001 is an automotive-grade
(AECQ100 compliant) LED driver that combines a
boost controller and high-side current sensing
circuitry optimized for driving one string of high-
brightness LEDs. The device is compatible with
multiple topologies such as boost, SEPIC and
floating load buck-boost. PWM dimming of the
LED brightness is achieved by means of an
external MOSFET in series with the LED string
and directly driven by a dedicated pin. The pin
that manages the LED current setting, usually
connected to an external resistor, can also be
used as analog control if a microcontroller is
located in the LED module. The high-side current
sensing, in combination with a P-channel
MOSFET, provides effective protection in case
the positive terminal of the LED string is shorted
to ground. The high precision current sensing
circuitry allows an LED current regulation
reference within ± 4% accuracy over the entire
temperature range and production spread. A fault
output (open-drain) informs the host system of
faulty conditions: device overtemperature, output
overvoltage (disconnected LED string) and LED
overcurrent.
Table 1. Device summary
Order code
Package
Packaging
ALED6001
ALED6001TR
HTSSOP-16
(exposed pad)
Tube
Tape and reel
November 2015
This is information on a product in full production.
DocID026965 Rev 2
1/26
www.st.com