lt4254cgn-trpbf Linear Technology Corporation, lt4254cgn-trpbf Datasheet - Page 15

• Manufacturer Part Number: lt4254cgn-trpbf
• Description: Positive High Voltage Hot Swap Controller With Open-circuit Detect
• Manufacturer: Linear Technology Corporation

PACKAGE DESCRIPTIO
APPLICATIO S I FOR ATIO
2ND LAYER METAL
U
GND
(0.178 – 0.249)
.007 – .0098
V
CC
NOTE:
1. CONTROLLING DIMENSION: INCHES
2. DIMENSIONS ARE IN
3. DRAWING NOT TO SCALE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
.254 MIN
.0165 ± .0015
U
RECOMMENDED SOLDER PAD LAYOUT
SHORT
VIA
V
PIN
CC
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.
(0.406 – 1.270)
.016 – .050
(MILLIMETERS)
W
R1
U
INCHES
Figure 15. Recommended Component Placement
1
2
3
4
5
6
7
8
16-Lead Plastic SSOP (Narrow .150 Inch)
R2
UV
OV
NC
OPEN
PWRGD
NC
RETRY
GND
.045 ±.005
.150 – .165
0° – 8° TYP
(Reference LTC DWG # 05-08-1641)
(0.38 ± 0.10)
.015 ± .004
.0250 BSC
U
LT4254
R3
SENSE
TIMER
GATE
V
NC
NC
NC
FB
CC
× 45°
GN Package
C2
14
16
15
13
12
11
10
9
R9
C1
(5.817 – 6.198)
(0.203 – 0.305)
.008 – .012
.229 – .244
R8
TYP
.0532 – .0688
(1.35 – 1.75)
R7
R6
D1
16 15 14 13
1
2 3
(4.801 – 4.978)
R
.189 – .196*
SENSE
Q1
R5
4
12 11 10 9
5 6 7
(0.635)
.0250
BSC
GND
R4
(0.102 – 0.249)
8
.004 – .0098
(3.810 – 3.988)
4254 F15
.150 – .157**
GN16 (SSOP) 0204
PWRGD
(0.229)
V
.009
REF
OUT
OPEN
LT4254
15
4254fb