LTC1539_15 Datasheet, PDF (32/32 Pages) Linear Technology – Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators

LTC1538-AUX/LTC1539
TYPICAL APPLICATION
3.3V to 2.9V at 3A Low Noise Linear Regulator
2.9V
ON/OFF
AUXDR
LTC1539
AUXFB
AUXON
6.8nF
47k
22pF
5V
27Ω
Q1
MMBT2907ALTI
100Ω ^10Ω
3.3V
ZETEX
FZT849
(SURFACE MOUNT)
2.9V
3A
316k
1%
+ _330µF
×2
221k
1%
1538 TA05
RELATED PARTS
PART NUMBER
LTC1142/LTC1142HV
LTC1148/LTC1148HV
LTC1159
LT^®1375/LT1376
DESCRIPTION
Dual High Efficiency Synchronous Step-Down Switching Regulators
High Efficiency Step-Down Switching Regulator Controllers
High Efficiency Step-Down Switching Regulator Controller
1.5A, 500kHz Step-Down Switching Regulators
LTC1430
High Power Step-Down Switching Regulator Controller
LTC1435
Single High Efficiency Low Noise Switching Regulator Controller
LTC1436/LTC1436-PLL/ High Efficiency Low Noise Synchronous Step-Down
LTC1437
Switching Regulator Controllers
LTC1438
Dual, Synchronous Controller with Power-On Reset
and an Extra Comparator
LTC1439/LTC1438X
Dual Synchronous Controller with Power-On Reset, Extra Linear
Controller, Adaptive Power, Synchronization, Auxiliary Regulator and
an Extra Uncommited Comparators
LT1510
Constant-Voltage/Constant-Current Battery Charger
COMMENTS
Dual Synchronous, V_IN ≤ 20V
Synchronous, V_IN ≤ 20V
Synchronous, V_IN ≤ 40V, For Logic Threshold FETs
High Frequency, Small Inductor, High Efficiency
Switchers, 1.5A Switch
High Efficiency 5V to 3.3V Conversion at Up to 15A
16-Pin Narrow SO and SSOP Packages
Full-Featured Single Controllers
Shutdown Current < 30µA
Shutdown Current < 30µA, Power-On Reset Eliminated
1.3A, Li-Ion, NiCd, NiMH, Pb-Acid Charger
32 Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] ^q FAX: [phone] ^q TELEX: 499-3977
LT/GP 0896 7K • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1996