1308AI Linear Technology Corporation, 1308AI Datasheet - Page 20

• Manufacturer Part Number: 1308AI
• Description: Lt1308b - Single Cell High Currentmicropower 600khz Boost Dc/dc Converter
• Manufacturer: Linear Technology Corporation

RELATED PARTS
PART NUMBER
LT1302
LT1304
LT1307/LT1307B Single Cell, Micropower, 600kHz PWM DC/DC Converters
LT1316
LT1317/LT1317B Micropower, 600kHz PWM DC/DC Converters
LTC
LTC1516
LTC1522
LT1610
LT1611
LT1613
LT1615
LT1617
LTC1682
LT1949
LT1949-1
LT1308A/LT1308B
20
TYPICAL APPLICATIO
®
1474
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
DESCRIPTION
High Output Current Micropower DC/DC Converter
2-Cell Micropower DC/DC Converter
Burst Mode Operation DC/DC with Programmable Current Limit
Micropower Step-Down DC/DC Converter
2-Cell to 5V Regulated Charge Pump
Micropower, 5V Charge Pump DC/DC Converter
Single-Cell Micropower DC/DC Converter
Inverting 1.4MHz Switching Regulator in 5-Lead SOT-23
1.4MHz Switching Regulator in 5-Lead SOT-23
Micropower Step-Up DC/DC in 5-Lead SOT-23
Micropower Inverting DC/DC Converter in SOT-23
Doubler Charge Pump with Low Noise LDO
600kHz, 1A Switch PWM DC/DC Converter
1.1MHz, 1A Switch DC/DC Converter
●
FAX: [phone]
C1: AVX TAJC476M010
C2: AVX TPSD107M016
D1: IR 10BQ015
2.7V TO 4.2V
U
●
Li-Ion
CELL
www.linear-tech.com
Li-Ion to 12V/300mA Step-Up DC/DC Converter
+
SHUTDOWN
C1
47μF
L1: MURATA LQH6C4R7
SHDN
V
V
IN
C
47k
LT1308B
330pF
4.7μH
L1
GND
SW
FB
D1
COMMENTS
5V/600mA from 2V, 2A Internal Switch, 200μA I
5V/200mA, Low-Battery Detector Active in Shutdown
3.3V at 75mA from One Cell, MSOP Package
1.5V Minimum, Precise Control of Peak Current Limit
100μA I
94% Efficiency, 10μA I
12μA I
Regulated 5V ±4% Output, 20mA from 3V Input
3V at 30mA from 1V, 1.7MHz Fixed Frequency
– 5V at 150mA from 5V Input, Tiny SOT-23 package
5V at 200mA from 4.4V Input, Tiny SOT-23 package
20μA I
V
Adjustable or Fixed 3.3V, 5V Outputs, 60μV
1.1A, 0.5Ω, 30V Internal Switch, V
1.1MHz Version of LT1949
IN
= 1V to 15V; V
R1
887k
R2
100k
Q
Q
Q
, No Inudctors, 5V at 50mA from 3V Input
, 36V, 350mA Switch
, Operate with V
+
1308A/B TA01
12V
300mA
C2
100μF
OUT
to –34V
Q
, 9V to 5V at 250mA
IN
© LINEAR TECHNOLOGY CORPORATION 1999
as Low as 1.5V
IN
LT 0807 REV A • PRINTED IN USA
as Low as 1.5V
RMS
Output Noise
Q
1308abfa