LT1618 LINER [Linear Technology], LT1618 Datasheet - Page 11

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

PACKAGE DESCRIPTIO
TYPICAL APPLICATIO S
(0.18)
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
0.007
1.8V TO 5V
12V Boost Converter Start-Up with Input Current Limit
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
200mA/DIV
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
5V/DIV
C1: TAIYO YUDEN JMK212BJ475
C2: TAIYO YUDEN EMK316BJ475
D1: ON SEMICONDUCTOR MBR0520
L1: SUMIDA CR43-100
V
V
4.7 F
IN
OUT
I
LI
12V Boost Converter with 500mA Input Current Limit
C1
(0.53 0.015)
0.021 0.006
(V
I
L1
IN
= 1.8V, I
0.1
0 – 6 TYP
3
8
9
LOAD
50 s/DIV
4
ISP
V
SHDN
I
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
ADJ
ISN
IN
2
= 40mA)
LT1618
SEATING
10 H
GND
5
U
L1
PLANE
[phone]
[phone]
[phone]
[phone]
10
U
SW
V
FB
C
7
2k
0.007 – 0.011
(0.17 – 0.27)
10nF
1
D1
(Reference LTC DWG # 05-08-1661)
1618 TA07
(1.10)
0.043
MAX
10-Lead Plastic MSOP
0.0197
(0.50)
MS10 Package
BSC
R1
909k
R2
107k
1618 • TA06a
C2
4.7 F
V
12V
OUT
12V Boost Converter Start-Up without Input Current Limit
(0.86)
0.034
REF
0.005 0.002
(0.13 0.05)
200mA/DIV
5V/DIV
V
OUT
I
LI
0.193 0.006
(3.00 0.102)
0.118 0.004*
(4.90 0.15)
(V
90
85
80
75
70
65
60
IN
0
= 1.8V, I
20
40
LOAD
10
1 2 3 4 5
L0AD CURRENT (mA)
50 s/DIV
Efficiency
V
9
IN
60
= 40mA)
8
= 3.3V
7 6
V
80
IN
= 5V
100
(3.00 0.102)
0.118 0.004**
120 140
MSOP (MS10) 1100
LT1618
1618 TA08
1618 TA06b
160
11