LTC1771IS8 Linear Technology, LTC1771IS8 Datasheet - Page 15

• Manufacturer Part Number: LTC1771IS8
• Description: IC CTRLR DC/DC STEPDOWN HE 8SOIC
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LTC1771IS8

• Internal Switch(s): No
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.23 ~ 18 V
• Current - Output: 5A
• Voltage - Input: 2.8 ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Frequency - Switching: -

PACKAGE DESCRIPTIO
TYPICAL APPLICATIONS
(0.203 – 0.254)
**
0.008 – 0.010
*
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
(0.254 – 0.508)
0.010 – 0.020
(0.18)
0.007
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
(0.406 – 1.270)
0.016 – 0.050
45
(0.53 0.015)
0.021 0.006
C
C
D1, D2: MICROSEMI UPS5817
L1: COILTRONICS UP2B-470, GOWANDA SMP3316-472M
IN
OUT
220pF
: AVX TPSD226M025R0200
: SANYO POSCAP 10TPB100M
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.
10k
1M
1%
0 – 8 TYP
0.01 F
0 – 6 TYP
U
1
2
3
4
RUN/SS
I
V
GND
TH
U
FB
(1.346 – 1.752)
8-Lead Plastic Small Outline (Narrow 0.150)
0.053 – 0.069
(0.355 – 0.483)
LTC1771
0.014 – 0.019
SEATING
4.69M
5pF
1%
PLANE
Dimension in inches (millimeters) unless otherwise noted.
TYP
SENSE
PGATE
MODE
4-NiCd/NiMH Battery Charger
V
0.040 0.006
(1.02 0.15)
(0.30)
0.012
IN
REF
(LTC DWG # 05-08-1660)
(LTC DWG # 05-08-1610)
8
7
6
5
8-Lead Plastic MSOP
0.0256
MODE
(0.65)
BSC
MS8 Package
S8 Package
1000pF
Si6447DQ
(1.270)
(0.86 0.102)
0.034 0.004
D1
0.050
BSC
(0.101 – 0.254)
0.004 – 0.010
(0.15 0.102)
0.006 0.004
R
0.1
47 H
SENSE
L1
(5.791 – 6.197)
0.228 – 0.244
+
+
(3.00 0.102)
0.193 0.006
0.118 0.004*
(4.90 0.15)
C
22 F
25V
C
100 F
10V
IN
OUT
1771 TA07
D2
1
8
1
8
(4.801 – 5.004)
V
8V
TO 18V
V
4-NiCd
1A
0.189 – 0.197*
IN
OUT
7 6 5
2 3
7
2
4
6
3
MSOP (MS8) 1098
(3.00 0.102)
0.118 0.004**
5
4
LTC1771
(3.810 – 3.988)
0.150 – 0.157**
SO8 1298
15