Datasheet

27
LTC4221
4221fa
U
PACKAGE DESCRIPTIO
GN Package
16-Lead Plastic SSOP (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1641)
GN16 (SSOP) 0204
.016 – .050
(0.406 – 1.270)
.015
±
.004
(0.38
±
0.10)
× 45°
0° – 8° TYP
.007 – .0098
(0.178 – 0.249)
.0532 – .0688
(1.35 – 1.75)
.008 – .012
(0.203 – 0.305)
TYP
.004 – .0098
(0.102 – 0.249)
.0250
(0.635)
BSC
12
3
4
5
6
7
8
.229 – .244
(5.817 – 6.198)
.150 – .157**
(3.810 – 3.988)
16
15
14
13
.189 – .196*
(4.801 – 4.978)
12 11 10
9
.009
(0.229)
REF
.254 MIN
RECOMMENDED SOLDER PAD LAYOUT
.150 – .165
.0250 BSC.0165 ± .0015
.045 ±.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
Sequenced Up/Down, Channel 1 Up First, Down Last
ON2
FAULT
GND
LTC4221
Z1
Z2
D1
1
16
7
10
9
8
FB2
PWRGD2
PWRGD1
V
OUT1
3.3V
5A
V
OUT2
2.5V
5A
FB1
LONG
LONG
SHORT
GND
FAULT
LONG
SHORT
D1: 1N4148
Z1, Z2: SMAJ10
TIMER
FILTER
234151413
12
11
6
5
ON1
V
CC1
SENSE1 GATE1 V
CC2
SENSE2 GATE2
V
CC1
3.3V
V
CC2
2.5V
ON
0V TO 3.3V
OR
3.3V TO 0V
BACKPLANE
CONNECTOR
(FEMALE)
PCB EDGE
CONNECTOR
(MALE)
R
X1
10Ω
R
X2
10Ω
R5
13k
R3
8.06k
R2
6.98k
R4
10k
R1
17.8k
R
F3
14.3k
Q2
IRF7413
R
F4
5.11k
R
F1
20k
R
F2
5.11k
4221 TA05
C
X1
100nF
C
FILTER
1nF
C
TIMER
470nF
C
X2
100nF
Q1
IRF7413
R
SENSE1
0.004Ω
R
SENSE2
0.004Ω
TYPICAL APPLICATIO S
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.