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LED6001 Datasheet

PWM-dimmable single channel LED driver

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LED6001
PWM-dimmable single channel LED driver with integrated boost
controller
Datasheet - production data
HTSSOP-16
Features
Switching controller section
– 5.5 V to 36 V input voltage range
– Very low shutdown current: ISHDN < 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
Indoor and architectural LED lighting
Emergency LED lighting
Off-grid LED street lighting
White goods
Gaming/gambling machines
Description
The LED6001 device is a LED driver that
combines a boost controller and a 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. The
brightness of the LEDs can be controlled through
PWM dimming and analog dimming (10:1 ratio)
by means of two independent pins. Enhanced
PWM dimming can be obtained thanks to
a MOSFET in series with the LED string and
directly driven by a dedicated pin.
The high-side current sensing, in combination
with a P-channel MOSFET, provides an effective
protection in case the positive terminal of the LED
string is shorted to ground. The high precision
current sensing circuitry allows a LED current
regulation reference within 4% accuracy over
the whole temperature range and production
spread.
A fault output (open-drain) informs the host
system about faulty conditions: device
overtemperature, output overvoltage
(disconnected LED string) and LED overcurrent.
Table 1. Device summary
Order code
Package
Packaging
LED6001
LED6001TR
HTSSOP-16
(exposed pad)
Tube
Tape and reel
June 2014
This is information on a product in full production.
DocID025575 Rev 3
1/26
www.st.com


STMicroelectronics Electronic Components Datasheet

LED6001 Datasheet

PWM-dimmable single channel LED driver

No Preview Available !

Contents
Contents
LED6001
1 Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.1 Device supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2 Boost controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2.1 Turn on and power-down sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7.2.2 Boost controller operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.2.3 Boost converter stability and slope compensation . . . . . . . . . . . . . . . . . 14
7.2.4 Switching frequency oscillator and external synchronization . . . . . . . . . 16
7.3 LED current regulation and brightness control . . . . . . . . . . . . . . . . . . . . . 17
7.4 Device protections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.1 Linear regulators undervoltage lockout . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.2 Power switch overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4.3 Output overvoltage and OVFB pin disconnection . . . . . . . . . . . . . . . . . 20
7.4.4 Output rail disconnection detection or output short-circuit to ground . . . 21
7.4.5 Thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2/26 DocID025575 Rev 3


Part Number LED6001
Description PWM-dimmable single channel LED driver
Maker STMicroelectronics
Total Page 26 Pages
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