Datasheet

LTC4008
22
4008fb
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.
PACKAGE DESCRIPTION
GN Package
20-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
.337 – .344*
(8.560 – 8.738)
GN20 (SSOP) 0204
12
3
4
5
6
7
8910
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
1617181920
15
14
13
12 11
.016 – .050
(0.406 – 1.270)
.015 p .004
(0.38 p 0.10)
s
45
o
0
o
– 8
o
TYP
.0075 – .0098
(0.19 – 0.25)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
.058
(1.473)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 BSC.0165
p
.0015
.045
p
.005
* 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
INCHES
(MILLIMETERS)
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
APPLICATIONS INFORMATION
4008 F11
V
BAT
L1
V
IN
HIGH
FREQUENCY
CIRCULATING
PATH
BAT
SWITCH NODE
C2
C3
D1
Figure 11. High Speed Switching Path
CSP
4008 F12
DIRECTION OF CHARGING CURRENT
R
SENSE
BAT
Figure 12. Kelvin Sensing of Charging Current