LTC1626 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC1626' PDF : 12 Pages View PDF
LTC1626
TYPICAL APPLICATIONS
Single Li-Ion to 3.3V Buck-Boost Converter
L1B
3
L1A
2
TOP VIEW
41
L1B
L1A
(VIN = 2.5V TO 4.2V)
SINGLE +
Li-ION
CELL
PWR VIN
LBI
LBO
VIN
SW
MANUFACTURER PART NO.
COILTRONICS
DALE
CTX33-4
LPT4545-330LA
VIN (V)
2.5
3.0
3.5
4.0
4.2
I OUT (mA)
200
350
500*
500*
500*
*DESIGN LIMIT
SHUTDOWN
1k
3900pF
CT
75pF
SHDN
PGND
LTC1626
ITH
CT
SENSE–
VFB
SGND
SENSE+
* IRC 1206-R100F
† AVX TPSE107M016R0100
†† AVX TPSD107M010R0065
+
0.1µF
CIN†
100µF
16V
100µF†
16V
+
4
L1B
33µH
3
1000pF
RSENSE*
0.1Ω
L1A
33µH
D1 1
2
MBRS130LT1
100pF
VOUT
3.3V
15k +
1%
9.09k
1%
COUT††
100µF
10V
1626 TA05
VIN
5V
PWR VIN
LBI
LBO
VIN
SW
SHUTDOWN
1k
3900pF
CT
270pF
SHDN
PGND
LTC1626
ITH
SENSE+
SENSE –
CT
VFB
SGND
* COILCRAFT DO3316-473
** IRC 1206-R100F
† AVX TPSD107K010
†† AVX TPSE227K010
5V to 3.3V Converter
+
0.1µF
CIN†
100µF
10V
L1*
47µH
RSENSE**
0.1Ω
D1
MBRS130LT1
1000pF
100pF
VOUT
3.3V
0.5A
+
15k
1%
COUT††
220µF
10V
9.09k
1%
1626 TA04
RELATED PARTS
PART NUMBER
LTC1174/LTC1174-3.3
LTC1174-5
LTC1265
LT1375/LT1376
LTC1435
LTC1436/LTC1436-PLL
LTC1438/LTC1439
LTC1474/LTC1475
DESCRIPTION
High Efficiency Step-Down and Inverting DC/DC Converters
COMMENTS
Monolithic Switching Regulators, Burst Mode Operation
1.2A, High Efficiency Step-Down DC/DC Converter
Constant Off-Time Monolithic, Burst Mode Operation
1.5A, 500kHz Step-Down Switching Regulators
High Frequency, Small Inductor, High Efficiency
High Efficiency, Low Noise, Synchronous Step-Down Converter 16-Pin Narrow SO and SSOP
High Efficiency, Low Noise, Synchronous Step-Down Converters 24-Pin Narrow and 28-Pin SSOP
Dual, Low Noise, Synchronous Step-Down Converters
Multiple Output Capability
Low Quiescent Current Step-Down DC/DC Converters
Monolithic, IQ = 10µA, 8-Pin MSOP
12 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417q (408)432-1900
FAX: (408) 434-0507qTELEX: 499-3977q www.linear-tech.com
1626f LT/TP 0398 4K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1997
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