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LTC1439CG

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LTC1438/LTC1439
31
14389fb
PACKAGE DESCRIPTION
U
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.
GW Package
36-Lead Plastic SSOP (Wide 0.300)
(LTC DWG # 05-08-1642)
GW36 SSOP 0204
0° – 8° TYP
0.355
REF
0.231 – 0.3175
(.0091 – .0125)
0.40 – 1.27
(.015 – .050)
7.417 – 7.595**
(.292 – .299)
× 45°
0.254 – 0.406
(.010 – .016)
2.286 – 2.388
(.090 – .094)
0.1 – 0.3
(.004 – .0118)
2.44 – 2.64
(.096 – .104)
0.800
(.0315)
BSC
0.28 – 0.51
(.011 – .02)
TYP
15.291 – 15.545*
(.602 – .612)
1 2 3 4 5 6 7 8 9 101112131415161718
10.11 – 10.55
(.398 – .415)
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
10.804 MIN
RECOMMENDED SOLDER PAD LAYOUT
7.75 – 8.258
1936
181
0.800 BSC0.520 ±0.0635
1.40 ±0.127
DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.152mm (0.006") PER SIDE
*
DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.254mm (0.010") PER SIDE
**
MILLIMETERS
(INCHES)
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
LTC1438/LTC1439
32
14389fb
PART NUMBER DESCRIPTION COMMENTS
LTC1159 High Efficiency Step-Down Switching Regulator Controller Synchronous, V
IN
≤ 40V, For Logic Threshold FETs
LT
®
1375/LT1376 1.5A, 500kHz Step-Down Switching Regulators High Frequency, Small Inductor, High Efficiency
Switchers, 1.5A Switch
LTC1436/LTC1436-PLL/ High Efficiency Low Noise Synchronous Step-Down Full-Featured Single Controller
LTC1437 Switching Regulator Controllers
LT1510 Constant-Voltage/Constant-Current Battery Charger 1.3A, Li-Ion, NiCd, NiMH, Pb-Acid Charger
LTC1538-AUX Dual, Synchronous Controller with AUX Regulator 5V Standby in Shutdown
LTC1539 Dual High Efficiency, Low Noise, Synchronous Step-Down 5V Standby in Shutdown
Switching Regulator Controller
LTC1778 Fast Step-Down Synchronous Controller Fast Transient Response; No R
SENSE
LTC3728 2-Phase, Dual Synchronous Step-Down Controller Minimum C
IN
and C
OUT
, 550kHz/Phase; Current Mode
© LINEAR TECHNOLOGY CORPORATION 1996
3.3V to 2.9V at 3A Low Noise Linear Regulator
TYPICAL APPLICATION
U
LTC1439
AUXDR
AUXFB
AUXON
1438 TA05
6.8nF
22pF
47k
27Ω
100Ω
316k
1%
221k
1%
Q1
MMBT2907ALTI
10Ω
+
330µF
× 2
ZETEX
FZT849
(SURFACE MOUNT)
3.3V
5V
2.9V
3A
2.9V
ON/OFF
RELATED PARTS
LT/LT 0305 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
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LTC1439CG

Mfr. #:
Buy LTC1439CG
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators LTC1439 - Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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