Datasheet
12
LT1611
1611f LT/TP 0999 4K • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1998
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LT1307 Single Cell Micropower DC/DC with Low Battery Detector 3.3V/75mA from 1V, 600kHz Fixed Frequency
LT1316 Burst Mode
TM
Operation DC/DC with Programmable Current Limit 1.5V Minimum V
IN
, Precise Control of Peak Switch Current
LT1317 2-Cell Micropower DC/DC with Low Battery Detector 3.3V/200mA from Two Cells, 600kHz Fixed Frequency
LT1370/LT1371 500kHz High Efficiency DC/DC Converter 42V, 6A/3A Internal Switch, Negative Feedback Regulation
LT1610 Single Cell Micropower DC/DC 3V/30mA from 1V, 1.7MHz Fixed Frequency, 30µA I
Q
LT1613 1.4MHz SOT-23 Step-Up DC/DC Converter 5V at 200mA from 3.3V Input
LT1614 Inverting Mode Switching Regulator with Low-Battery Detector –5V at 200mA from 5V Input in MSOP
LT1615 Micropower SOT-23 Step-Up DC/DC Converter 20µA Quiescent Current, V
OUT
Up to 34V
LT1617 Micropower SOT-23 Inverting Regulator V
OUT
Up to –34V, 20µA Quiescent Current
Burst Mode is a trademark of Linear Technology Corporation.
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
LOAD CURRENT (mA)
0
25 50 75 100 125 150
EFFICIENCY (%)
1611 TA04
85
80
75
70
65
60
55
50
V
IN
= 6.5V
V
IN
= 5V
V
IN
= 3.6V
4-Cell to –10V Inverting Converter Efficiency
PACKAGE DESCRIPTION
U
Dimensions in inches (millimeters) unless otherwise noted.
S5 Package
5-Lead Plastic SOT-23
(LTC DWG # 05-08-1633)
TYPICAL APPLICATIO S
U
V
IN
V
IN
V
OUT
–10V/60mA
1611 TA03
SW
L1A
15µH
L1B
15µH
D1
GND
LT1611
C1
22µF
C3
6.8µF
C2
1µF
10k
68.1k
NFBSHDNSHUTDOWN
+
+
C1: AVX TAJB226M010 (803) 946-0362
C2: TAIYO YUDEN LMK212BJ105MG
C3: AVX TAJA685M016
D1: MOTOROLA MBR0520 (800) 441-2447
L1: SUMIDA CL562-150 (847) 956-0666
4-Cell to –10V Inverting Converter
1.50 – 1.75
(0.059 – 0.069)
0.35 – 0.55
(0.014 – 0.022)
0.35 – 0.50
(0.014 – 0.020)
FIVE PLACES (NOTE 2)
S5 SOT-23 0599
0.90 – 1.45
(0.035 – 0.057)
0.90 – 1.30
(0.035 – 0.051)
0.00 – 0.15
(0.00 – 0.006)
0.09 – 0.20
(0.004 – 0.008)
(NOTE 2)
2.60 – 3.00
(0.102 – 0.118)
NOTE:
1. DIMENSIONS ARE IN MILLIMETERS
2. DIMENSIONS ARE INCLUSIVE OF PLATING
3. DIMENSIONS ARE EXCLUSIVE OF MOLD FLASH AND METAL BURR
4. MOLD FLASH SHALL NOT EXCEED 0.254mm
5. PACKAGE EIAJ REFERENCE IS SC-74A (EIAJ)
0.95
(0.037)
REF
2.80 – 3.00
(0.110 – 0.118)
(NOTE 3)
1.90
(0.074)
REF