Linear Technology's latest products DC2257A

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DC2257A - LTM8005 38VIN, 38VOUT Boost μModule LED Driver with 40V Switch

Demonstration circuit 2257A features the LTM®8005 – a 38VIN, 38VOUT boost μModule® LED driver that can disconnect the output to protect against faults and provides spread spectrum switching to simplify emissions compliance. DC2257A is an LED driver with an input range for normal operation from 6V to 27V.

OVLO becomes active for inputs above 29V and the maximum input voltage is 38V. The LED current is 1.2A and the base switching frequency is 350kHz. The efficiency is 92% when the input is 12V with a 35V LED load. 35V is the maximum LED voltage.

FEATURES DESCRIPTION

38VIN Boost µModule Regulator for
LED Drive with 10A Switch

The LTM®8005 is a 38VIN, 38VOUT boost µModule (power micromodule) LED driver designed to regulate current or voltage and is ideal for driving LEDs. The fixed frequency and current mode architecture result in stable operation

over a wide range of supply and output voltages. Spread spectrum frequency modulation (SSFM) can be activated for improved electromagnetic compatibility (EMC) performance.

The ground-referred voltage FB pin serves as the input for several LED protection features, and also allows the converter to operate as a constant voltage source. The PWM input provides LED dimming ratios of up to 3000:1, and the CTRL inputs provide additional analog dimming capability.

The low profile package enables utilization of unused space on the bottom of PC boards. The LTM8005 is packaged in thermally enhanced, compact over-molded Ball Grid Array (BGA) package suitable for automated assembly by standard surface mount equipment. The LTM8005 is RoHS compliant. 350mA at 30.5V to 35.5V LED String from 6V to 27V VIN (Boost) with Spread Spectrum

APPLICATIONS

1.  Wide Input Voltage Range: 5V to 38V
2. Supports Boost or SEPIC Power Topologies
3. Adjustable LED Current Up to 1.6A
4. 40V 10A Internal Power Switch
5. Wide Temperature Range: –40°C to 150°C
6. Input and Output Current Reporting
7. Internal Switch for PWM and Output Disconnect
8. Internal Spread Spectrum Frequency Modulation
9. 3000:1 True Color PWM™ Dimming
10. Open LED Protection with OPENLED Flag
11. Short-Circuit Protection and SHORTLED Flag
12. Soft-Start with Programmable Fault Restart Timer
13. 9mm × 11.25mm × 2.22mm BGA
14. High Power LED, High Voltage LED
15. Accurate Current-Limited Voltage Regulators

THE DC2257A DATASHEET DOWNLOAD ADDRESS

You can learn the Product Attributes from data-sheets,for example:
 Manufacturer  Series  Part Status Current - Output / Channel   Outputs and Type    Voltage - Output  Voltage - Input and other feature.

Tag: manufactures Linear DC2257A

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