Datasheet LTC3108-1 (Analog Devices) - 6

LTC3108-1
Typical perForMance characTerisTics TA = 25°C, unless otherwise noted. VOUT and PGD Response Start-Up Voltage Sequencing During a Step Load
VIN = 50mV 50mA LOAD STEP 1:100 RATIO TRANSFORMER COUT = 220µF COUT = 220µF CSTORE = 470µF CH1 C VSTORE LDO = 2.2µF 1V/DIV CH2 VOUT, 1V/DIV CH2, VOUT 1V/DIV CH1 PGD, 1V/DIV CH3, VLDO 1V/DIV 31081 G12 31081 G13 10sec/DIV 5ms/DIV
VOUT Ripple LDO Step Load Response
30µA LOAD COUT = 220µF 20mV/ VLDO DIV 20mV/DIV ILDO 5mA/DIV 31081 G14 100ms/DIV 200µs/DIV 31081 G15 0mA TO 3mA LOAD STEP CLDO = 2.2µF
Enable Input and VOUT2 Running on Storage Capacitor
CSTORE = 470µF VOUT LOAD = 100µA CH3 VSTORE CH2 1V/DIV VOUT2 1V/DIV CH2, VOUT 1V/DIV CH4, VLDO CH1 1V/DIV VOUT2_EN CH1, VIN 1V/DIV 50mV/DIV 31081 G16 1ms/DIV 31081 G17 5sec/DIV 10mA LOAD ON VOUT2 COUT = 220µF 31081fb 6 For more information www.linear.com/LTC3108-1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration order information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts