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LT1944-1 Datasheet(PDF) 8 Page - Linear Technology |
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LT1944-1 Datasheet(HTML) 8 Page - Linear Technology |
8 / 8 page 8 LT1944-1 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 q FAX: (408) 434-0507 q www.linear.com ©LINEAR TECHNOLOGY CORPORATION 2001 19441f LT/TP 0801 2K • PRINTED IN USA RELATED PARTS PART NUMBER DESCRIPTION COMMENTS LT1307 Single-Cell Micropower 600kHz PWM DC/DC Converter 3.3V at 75mA from One Cell, MSOP Package LT1316 Burst Mode TM Operation DC/DC with Programmable Current Limit 1.5V Minimum, Precise Control of Peak Current Limit LT1317 2-Cell Micropower DC/DC with Low-Battery Detector 3.3V at 200mA from Two Cells, 600kHz Fixed Frequency LT1610 Single-Cell Micropower DC/DC Converter 3V at 30mA from 1V, 1.7MHz Fixed Frequency LT1611 1.4MHz Inverting Switching Regulator in 5-Lead ThinSOT – 5V at 150mA from 5V Input, Tiny ThinSOT Package LT1613 1.4MHz Switching Regulator in 5-Lead ThinSOT 5V at 200mA from 3.3V Input, Tiny ThinSOT Package LT1615 Micropower DC/DC Converter in 5-Lead ThinSOT 20V at 12mA from 2.5V Input, Tiny ThinSOT Package LT1617 Micropower Inverting DC/DC Converter in 5-Lead ThinSOT –15V at 12mA from 2.5V Input, Tiny ThinSOT Package LT1930A 2.2MHz Boost DC/DC Converter in ThinSOT 5V at 450mA from 3.3V, Tiny ThinSOT Package LT1944 Dual Micropower Step-Up DC/DC Converter 5V at 80mA and 30V at 8mA, MSOP Package Burst Mode is a trademark of Linear Technology Corporation Four Output Power Supply ( ±5V, ±15V) VIN SW2 FB1 LT1944-1 2 3 L1 22 µH D1 SHDN1 324k 1M C2 4.7 µF 5V 20mA 15V 2mA –15V 2mA –5V 20mA VIN 2.7V TO 4.2V 1944-1 TA03 GND 7 PGND 9 PGND 10 86 SW1 4.7pF C1 4.7 µF FB2 4 1 5 SHDN2 L2 22 µH D2 D3 D4 D6 D5 2M 178k C3 1 µF 4.7pF C1, C2, C7: TAIYO YUDEN JMK212BJ475 C3, C4: TAIYO YUDEN EMK212BJ105 C5, C6: TAIYO YUDEN EMK107BJ104 D1, D2, D3, D4, D5, D6: CENTRAL SEMI CMDSH3 L1, L2: MURATA LQH3C220 C5 0.1 µF C6 0.1 µF C7 4.7 µF C4 1 µF TYPICAL APPLICATIO |
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