Datasheet LT1944-1 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Dual Micropower Step-Up DC/DC Converter |
| Pages / Page | 8 / 8 — TYPICAL APPLICATIO. Four Output Power Supply (. 5V,. 15V). RELATED PARTS. … |
| File Format / Size | PDF / 151 Kb |
| Document Language | English |
TYPICAL APPLICATIO. Four Output Power Supply (. 5V,. 15V). RELATED PARTS. PART NUMBER. DESCRIPTION. COMMENTS
Model Line for this Datasheet
Text Version of Document
LT1944-1
U TYPICAL APPLICATIO Four Output Power Supply (
±
5V,
±
15V)
D5 –5V 20mA C6 C7 D6 0.1µF 4.7µF L1 22 V µH D1 IN 5V 2.7V 20mA TO 4.2V 8 6 4.7pF 1M VIN SW2 4 5 SHDN2 FB2 C1 LT1944-1 C2 4.7µF 4.7µF 2 1 SHDN1 FB1 324k GND PGND PGND SW1 3 7 9 10 178k C3 4.7pF 2M 1µF L2 22µH D2 15V 2mA D3 C1, C2, C7: TAIYO YUDEN JMK212BJ475 C3, C4: TAIYO YUDEN EMK212BJ105 C5, C6: TAIYO YUDEN EMK107BJ104 C5 C4 D1, D2, D3, D4, D5, D6: CENTRAL SEMI CMDSH3 0.1µF D4 1µF –15V L1, L2: MURATA LQH3C220 1944-1 TA03 2mA
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 ModeTM 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 19441f LT/TP 0801 2K • PRINTED IN USA 8 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2001
U TYPICAL APPLICATIO Four Output Power Supply (
±
5V,
±
15V)
D5 –5V 20mA C6 C7 D6 0.1µF 4.7µF L1 22 V µH D1 IN 5V 2.7V 20mA TO 4.2V 8 6 4.7pF 1M VIN SW2 4 5 SHDN2 FB2 C1 LT1944-1 C2 4.7µF 4.7µF 2 1 SHDN1 FB1 324k GND PGND PGND SW1 3 7 9 10 178k C3 4.7pF 2M 1µF L2 22µH D2 15V 2mA D3 C1, C2, C7: TAIYO YUDEN JMK212BJ475 C3, C4: TAIYO YUDEN EMK212BJ105 C5, C6: TAIYO YUDEN EMK107BJ104 C5 C4 D1, D2, D3, D4, D5, D6: CENTRAL SEMI CMDSH3 0.1µF D4 1µF –15V L1, L2: MURATA LQH3C220 1944-1 TA03 2mA
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 ModeTM 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 19441f LT/TP 0801 2K • PRINTED IN USA 8 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 2001
