25
LTC1709-85
170985f
APPLICATIO S I FOR ATIO
WUU
U
R
L
V
OUT
C
OUT
+
D1
L1
SW1
R
SENSE1
V
IN
C
IN
R
IN
+
D2
BOLD LINES INDICATE
HIGH, SWITCHING
CURRENT LINES.
KEEP LINES TO A
MINIMUM LENGTH.
L2
SW2
170985 F09
R
SENSE2
Figure 8. Instantaneous Current Path Flow in a Multiple Phase Switching Regulator
26
LTC1709-85
170985f
APPLICATIO S I FOR ATIO
WUU
U
Figure 9. Single and 2-Phase Current Waveforms
I
CIN
SW V
I
COUT
I
CIN
SW1 V
DUAL PHASESINGLE PHASE
SW2 V
I
COUT
RIPPLE
170985 F10
I
L1
I
L2
27
LTC1709-85
170985f
PACKAGE DESCRIPTIO
U
G Package
36-Lead Plastic SSOP (5.3mm)
(Reference LTC DWG # 05-08-1640)
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.
G36 SSOP 0802
0.09 – 0.25
(.0035 – .010)
0
° – 8°
0.55 – 0.95
(.022 – .037)
5.00 – 5.60**
(.197 – .221)
7.40 – 8.20
(.291 – .323)
1234
5
6
7
8 9 10 11 12 14 15 16 17 1813
12.50 – 13.10*
(.492 – .516)
2526 22 21 20 19232427282930313233343536
2.0
(.079)
0.05
(.002)
0.65
(.0256)
BSC
0.22 – 0.38
(.009 – .015)
MILLIMETERS
(INCHES)
DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED .152mm (.006") PER SIDE
DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED .254mm (.010") PER SIDE
*
**
NOTE:
1. CONTROLLING DIMENSION: MILLIMETERS
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
0.42 ±0.03 0.65 BSC
5.3 – 5.7
7.8 – 8.2
RECOMMENDED SOLDER PAD LAYOUT
1.25 ±0.12

LTC1709EG-85#PBF

Mfr. #:
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Hi Pwr PolyPhase DC/DC Controllers
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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