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| LTC4008_15 Datasheet, PDF (22/24 Pages) Linear Technology – 4A, High Effi ciency, Multi-Chemistry Battery Charger | |||
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LTC4008
APPLICATIONS INFORMATION
SWITCH NODE
L1
VBAT
HIGH
VIN
C2
FREQUENCY
CIRCULATING
PATH
D1
C3
BAT
4008 F11
Figure 11. High Speed Switching Path
DIRECTION OF CHARGING CURRENT
RSENSE
4008 F12
CSP
BAT
Figure 12. Kelvin Sensing of Charging Current
PACKAGE DESCRIPTION
GN Package
20-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.254 MIN
.045 p.005
.150 â .165
.337 â .344*
(8.560 â 8.738)
20 19 18 17 16 15 14 13 12 11
.058
(1.473)
REF
.229 â .244
(5.817 â 6.198)
.150 â .157**
(3.810 â 3.988)
.0165 p.0015
.0250 BSC
RECOMMENDED SOLDER PAD LAYOUT
.015 p .004 s 45o
(0.38 p 0.10)
.0075 â .0098
(0.19 â 0.25)
0o â 8o TYP
1 2 3 4 5 6 7 8 9 10
.0532 â .0688
(1.35 â 1.75)
.004 â .0098
(0.102 â 0.249)
.016 â .050
(0.406 â 1.270)
NOTE:
1. CONTROLLING DIMENSION: INCHES
.008 â .012
(0.203 â 0.305)
TYP
2.
DIMENSIONS
ARE
IN
INCHES
(MILLIMETERS)
3. DRAWING NOT TO SCALE
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
.0250
(0.635)
BSC
GN20 (SSOP) 0204
22
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 representa-
tion that the interconnection of its circuits as described herein will not infringe on existing patent rights.
4008fb
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