Datasheet LT1944 (Analog Devices) - 8
| Manufacturer | Analog Devices |
| Description | Dual Micropower Step-Up DC/DC Converter |
| Pages / Page | 8 / 8 — TYPICAL APPLICATIO. Four Output Power Supply for Color LCD Displays. … |
| File Format / Size | PDF / 168 Kb |
| Document Language | English |
TYPICAL APPLICATIO. Four Output Power Supply for Color LCD Displays. RELATED PARTS. PART NUMBER. DESCRIPTION. COMMENTS
Model Line for this Datasheet
Text Version of Document
LT1944
U TYPICAL APPLICATIO Four Output Power Supply for Color LCD Displays
Q1 C7 0.1µF –6.5V C6 500µA 2.2 D3A µF Q2 D3B 140k D2B C3 20V 0.1µF 500µA C5 C4 L1 D2A 1µF 0.1µF 10 V µH D1 IN 10V 2.7V 5mA TO 4.2V 8 10 1M VIN SW1 2 1 SHDN1 FB1 C1 LT1944 C2 4.7µF 2.2µF 4 5 SHDN2 FB2 140k GND PGND PGND SW2 3 7 9 6 C8 1µF 82.5Ω L2 10µH D4 15mA 5 WHITE LEDs 1944 TA03 C1: TAIYO YUDEN JMK212BJ475 (408) 573-4150 C2, C6: TAIYO YUDEN LMK212BJ225 (408) 573-4150 C3, C4, C7: TAIYO YUDEN EMK107BJ104 (408) 573-4150 C5, C8: TAIYO YUDEN TMK316BJ105 (408) 573-4150 D1, D4: ON SEMI MBR0530 (800) 282-9855 D2, D3: ZETEX BAT54S (631) 543-7100 L1, L2: SUMIDA CLQ4D10-100 (847) 956-0666 Q1, Q2: ON SEMI MMBT3906 (800) 282-9855
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® 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 SOT-23 – 5V at 150mA from 5V Input, Tiny SOT-23 Package LT1613 1.4MHz Switching Regulator in 5-Lead SOT-23 5V at 200mA from 3.3V Input, Tiny SOT-23 Package LT1615 Micropower DC/DC Converter in 5-Lead SOT-23 20V at 12mA from 2.5V Input, Tiny SOT-23 Package LT1617 Micropower Inverting DC/DC Converter in 5-Lead SOT-23 –15V at 12mA from 2.5V Input, Tiny SOT-23 Package LT1930A 2.2MHz Boost DC/DC Converter in SOT-23 5V at 450mA from 3.3V, Tiny SOT-23 Package Burst Mode is a registered trademark of Linear Technology Corporation 1944f LT/TP 1001 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 for Color LCD Displays
Q1 C7 0.1µF –6.5V C6 500µA 2.2 D3A µF Q2 D3B 140k D2B C3 20V 0.1µF 500µA C5 C4 L1 D2A 1µF 0.1µF 10 V µH D1 IN 10V 2.7V 5mA TO 4.2V 8 10 1M VIN SW1 2 1 SHDN1 FB1 C1 LT1944 C2 4.7µF 2.2µF 4 5 SHDN2 FB2 140k GND PGND PGND SW2 3 7 9 6 C8 1µF 82.5Ω L2 10µH D4 15mA 5 WHITE LEDs 1944 TA03 C1: TAIYO YUDEN JMK212BJ475 (408) 573-4150 C2, C6: TAIYO YUDEN LMK212BJ225 (408) 573-4150 C3, C4, C7: TAIYO YUDEN EMK107BJ104 (408) 573-4150 C5, C8: TAIYO YUDEN TMK316BJ105 (408) 573-4150 D1, D4: ON SEMI MBR0530 (800) 282-9855 D2, D3: ZETEX BAT54S (631) 543-7100 L1, L2: SUMIDA CLQ4D10-100 (847) 956-0666 Q1, Q2: ON SEMI MMBT3906 (800) 282-9855
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® 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 SOT-23 – 5V at 150mA from 5V Input, Tiny SOT-23 Package LT1613 1.4MHz Switching Regulator in 5-Lead SOT-23 5V at 200mA from 3.3V Input, Tiny SOT-23 Package LT1615 Micropower DC/DC Converter in 5-Lead SOT-23 20V at 12mA from 2.5V Input, Tiny SOT-23 Package LT1617 Micropower Inverting DC/DC Converter in 5-Lead SOT-23 –15V at 12mA from 2.5V Input, Tiny SOT-23 Package LT1930A 2.2MHz Boost DC/DC Converter in SOT-23 5V at 450mA from 3.3V, Tiny SOT-23 Package Burst Mode is a registered trademark of Linear Technology Corporation 1944f LT/TP 1001 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
