LED regulator can be configured in choice of operation modes
A DC/DC µModule regulator from Analog Devices is designed to drive LEDs. The Power by Linear LTM8005 regulator includes a DC/DC controller, power switch, Schottky diode and current sense resistor in a 9.0 x 11.25 x 2.22mm BGA package.
The LTM8005 operates from a 5.0 to 38V input voltage range and can deliver up to 1.6A of regulated current at an output voltage of up to 38V. An external inductor enables the LTM8005 to configure in different operation modes including boost, buck-boost, buck and SEPIC topologies, with a coupled inductor.
The high-reliability H-grade version guarantees operation from –40 to +150 degree C. The wide input voltage range and +150 degree C operation make this µModule LED driver suitable for use in automotive and industrial lighting applications.
The operating frequency is adjustable from 100kHz to 1MHz, while integral spread spectrum frequency modulation improves EMC performance, claims Analog Devices. LED brightness can be controlled by the analogue CTRL pin and by PWM dimming with a range up to 3,000:1. The LTM8005’s safety features include output disconnect short-circuit protection, open LED protection, programmable input current limit, as well as, input and output current reporting.
The E and I grades of the LTM8005 operate from –40 to +125 degree C.
The LTM8005 is in production now.