LT1618 LINER [Linear Technology], LT1618 Datasheet - Page 12

• Manufacturer Part Number: LT1618
• Description: Constant-Current/ Constant-Voltage 1.4MHz Step-Up DC/DC Converter
• Manufacturer: LINER [Linear Technology]

LT1618
RELATED PARTS
12
TYPICAL APPLICATIONS
PART NUMBER
LT1307
LT1316
LT1317
LT1610
LT1611
LT1613
LT1615
LT1617
LT1930/LT1930A
LT1932
Burst Mode is a trademark of Linear Technology Corporation.
100mA 500mA
0V
50mA/DIV
V
OFF ON
5V
0V
IN
3.3V
2V/DIV
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone] www.linear-tech.com
3.3V
V
4.7 F
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN JMK316BJ106
C3: TAIYO YUDEN EMK212BJ474
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
OUT
I
I
IN
IN
C1
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
Inverting 1.4MHz 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
1.2/2.2MHz Boost DC/DC Converter in ThinSOT
Constant-Current DC/DC LED Driver in ThinSOT
USB SEPIC During Start-Up
20k
USB to 5V SEPIC Converter
0.1
TM
8
9
3
13k
Operation DC/DC with Programmable Current Limit
1ms/DIV
ISP
V
SHDN
I
4
ADJ
ISN
IN
2
LT1618
10 H
GND
5
U
L1
[phone]
[phone]
[phone]
[phone]
[phone]
10
SW
V
FB
C
7
2k
0.47 F
10nF
1
C3
1618 TA10
L2
10 H
D1
R1
316k
R2
107k
1618 • TA09a
V
5V
C2
10 F
OUT
50mA/DIV
2V/DIV
COMMENTS
3.3V at 75mA from 1 Cell, MSOP Package
1.5V Minimum, Precise Control of Peak Current Limit
3.3V at 200mA from 2 Cells; 600kHz Fixed Frequency
3V at 30mA from 1V; 1.7MHz Fixed Frequency
–5V at 150mA from 5V Input. ThinSOT Package
5V at 200mA from 3.3V Input. ThinSOT Package
20V at 12mA from 2.5V Input. ThinSOT Package
–15V at 12mA from 2.5V Input. ThinSOT Package
5V at 450mA from 3.3V. ThinSOT Package
Drives 6 White LEDs from 2.7V
V
OUT
USB SEPIC Start-Up with Output Shorted
80
75
70
65
60
0
50
100
LOAD CURRENT (mA)
Efficiency
150
1ms/DIV
LINEAR TECHNOLOGY CORPORATION 2001
200
1618f LT/TP 0801 2K • PRINTED IN USA
250
300
1618 F09b
1618 TA11
350