LTC1148HV Linear Technology, LTC1148HV Datasheet - Page 19

• Manufacturer Part Number: LTC1148HV
• Description: High Efficiency Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

PACKAGE DESCRIPTIO
TYPICAL APPLICATIO S
**
*
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
(0.203 – 0.254)
0.008 – 0.010
(7.620 – 8.255)
(0.229 – 0.381)
0.300 – 0.325
0.009 – 0.015
0.325
8.255
+0.889
–0.381
+0.035
–0.015
(0.254 – 0.508)
0.010 – 0.020
0.016 – 0.050
0.406 – 1.270
45
(0.508)
0.020
MIN
C
390pF
T
(3.302 0.127)
0.130 0.005
(3.175)
0.125
0 – 8 TYP
MIN
Figure 17. Logic Selectable 5V/1A or 3.3V/1A High Efficiency Regulator
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.
10nF
(1.346 – 1.752)
0.053 – 0.069
(0.355 – 0.483)
0.014 – 0.019
+
R
1k
U
C
C
3300pF
C
1 F
(2.540 0.254)
(0.125)
U
0.100 0.010
0.005
14-Lead Plastic Small Outline (Narrow 0.150)
MIN
**KRL SL-1-C1-0R050R
*COILTRONICS CTX50-2-MP
1
2
3
4
5
6
7
Dimensions in inches (millimeters) unless otherwise noted.
P-DRIVE
NC
V
C
INTV
I
SENSE
TH
IN
T
(1.143 – 1.651)
0.045 – 0.065
CC
14-Lead PDIP (Narrow 0.300)
LTC1148
–
SHUTDOWN
(LTC DWG # 05-08-1510)
(LTC DWG # 05-08-1610)
N-DRIVE
SENSE
PGND
SGND
(1.270)
0.050
V
TYP
NC
FB
+
N Package
S Package
14
13
12
11
10
9
8
NDS9435A
SHUTDOWN
(0.457 0.076)
0.018 0.003
1000pF
50 H
(0.101 – 0.254)
0.004 – 0.010
(1.651)
*L
0.065
TYP
R
0.05
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
SENSE
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm)
(6.477 0.381)
MBRS140T3
NDS9410A
0.255 0.015*
(5.791 – 6.197)
0.228 – 0.244
100pF
**
D1
5.2V TO 14V
LTC1148-3.3/LTC1148-5
+
R1A
33k
1%
V
IN
14
1
14
C
100 F
20V
1
IN
R1B
43k
1%
R2
56k
1%
13
2
13
VN2222LL
2
+
12
3
12
0V: V
5V: V
3
(8.560 – 8.738)
0.337 – 0.344*
LTC1148 • F17
C
220 F
10V
OS-CON
OUT
2
(19.558)
OUT
OUT
0.770*
MAX
11
11
4
4
= 3.3V
= 5V
V
3.3V/2A
OR 5V/2A
OUT
10
10
5
5
6
9
9
6
LTC1148
8
7
8
7
N14 1197
(3.810 – 3.988)
0.150 – 0.157**
19
S14 0695