LT1944-1EMS Linear Technology, LT1944-1EMS Datasheet - Page 8

• Manufacturer Part Number: LT1944-1EMS
• Description: IC DC/DC CONV STP-UP DUAL 10MSOP
• Manufacturer: Linear Technology
• Type: Step-Up (Boost)r

Specifications of LT1944-1EMS

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 2
• Voltage - Output: 1.23 ~ 36 V
• Current - Output: 100mA, 175mA
• Voltage - Input: 1.2 ~ 15 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 10-MSOP, Micro10™, 10-uMAX, 10-uSOP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Frequency - Switching: -
• Other names: LT19441EMS

LT1944-1
TYPICAL APPLICATIO
PART NUMBER
LT1307
LT1316
LT1317
LT1610
LT1611
LT1613
LT1615
LT1617
LT1930A
LT1944
Burst Mode is a trademark of Linear Technology Corporation
8
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
DESCRIPTION
Single-Cell Micropower 600kHz PWM DC/DC Converter
Burst Mode
2-Cell Micropower DC/DC with Low-Battery Detector
Single-Cell Micropower DC/DC Converter
1.4MHz Inverting Switching Regulator in 5-Lead ThinSOT
1.4MHz Switching Regulator in 5-Lead ThinSOT
Micropower DC/DC Converter in 5-Lead ThinSOT
Micropower Inverting DC/DC Converter in 5-Lead ThinSOT
2.2MHz Boost DC/DC Converter in ThinSOT
Dual Micropower Step-Up DC/DC Converter
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
TM
Operation DC/DC with Programmable Current Limit
TO 4.2V
4.7 F
2.7V
U
V
C1
IN
www.linear.com
Four Output Power Supply ( 5V, 15V)
4
2
GND
SHDN2
SHDN1
V
IN
8
3
22 H
PGND
L2
LT1944-1
7
22 H
L1
PGND
9
SW2
SW1
FB2
FB1
6
10
5
1
C6
0.1 F
C5
0.1 F
D1
D2
4.7pF
4.7pF
D6
D3
D5
D4
178k
2M
COMMENTS
3.3V at 75mA from One Cell, MSOP Package
1.5V Minimum, Precise Control of Peak Current Limit
3.3V at 200mA from Two Cells, 600kHz Fixed Frequency
3V at 30mA from 1V, 1.7MHz Fixed Frequency
– 5V at 150mA from 5V Input, Tiny ThinSOT Package
5V at 200mA from 3.3V Input, Tiny ThinSOT Package
20V at 12mA from 2.5V Input, Tiny ThinSOT Package
–15V at 12mA from 2.5V Input, Tiny ThinSOT Package
5V at 450mA from 3.3V, Tiny ThinSOT Package
5V at 80mA and 30V at 8mA, MSOP Package
1M
324k
C7
4.7 F
1944-1 TA03
C4
1 F
–5V
20mA
C2
4.7 F
C3
1 F
5V
20mA
15V
2mA
–15V
2mA
LINEAR TECHNOLOGY CORPORATION 2001
19441f LT/TP 0801 2K • PRINTED IN USA