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dc1533af

DEMO MANUAL DC1533A

DESCRIPTION

LTM8045

Inverting/SEPIC µModule Converter

with Up to 700mA Output

Demo circuit DC1533A features the LTM®8045, an inverting/

SEPIC μModule converter delivering up to 700mA of output

current. DC1533A is configured as an inverting converter,

but can be easily changed to a SEPIC configuration for

non-inverting step-up or step-down functionality. The

user adjustable features of the LTM8045 such as output

voltage, switching frequency, soft-start period and under-

voltage lockout can be changed on DC1533A simply by

L, LT, LTC, LTM, μModule, Linear Technology and the Linear logo are registered trademarks of

Linear Technology Corporation. All other trademarks are the property of their respective owners.

PERFORMANCE SUMMARY

BOARD PHOTO

modifying or installing the appropriate resistors or capaci-

tor. The LTM8045 data sheet must be read in conjunction

with this demo manual to properly use or modify demo

circuit DC1533A.

Design files for this circuit board are available at

http://www.linear.com/demo

(TA = 25°C)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Minimum Input Voltage, VIN

2.8

V

Maximum Input Voltage, VIN

18

V

Regulator Output Voltage, VOUT–

R2 = 60.4k

–4.83

–5.19

V

Maximum Output Current, IOUT–

VIN = 5V

VIN = 12V

430

580

mA

mA

Efficiency

VIN = 5V, IOUT– = 400mA

80

%

Switching Frequency

R1 = 130k

700

kHz