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LT1621IGN#PBF

P1-P3P4-P6P7-P9P10-P12
10
LT1620/LT1621
TYPICAL APPLICATIONS
U
High Efficiency Buck Constant Current Source
Programmable Constant Current Source
AVG
PROG
V
CC
+IN
SENSE
LT1620MS8
1
2
3
4
8
7
I
OUT
GND
–IN
6
5
0.1µF
10k
1%
R
PROG
18k
0.1µF
1µF
I
PROG
2N3904
22Ω
VN2222LM
OUTIN
GNDSHDN
SHUTDOWN
0.1µF
6V
TO 28V
470Ω
0.1Ω
LT1121CS8-5
0.1µF
I
OUT
0A TO 1A
I
OUT
= (I
PROG
)(10,000)
R
PROG
= 40k FOR 1A OUTPUT
LT1620/21 • TA01
81
53
D45VH10
+
AVG
PROG
PROG2
+IN
SENSE
LT1620GN
1
3
5
16
14
I
OUT
GND
13
9
AVG2
6
MODE
12
V
CC
8
–IN
11
47k
0.047 µF
I
OUT
0A TO 1A
LT1620/21 • TA04
MBRS130T3
20k
0.1µF
10k
1%
I
PROG
R
PROG
10k
820Ω
4.7k
1µF
33k
2N7002
2N7002
2N4403
2N4401
10k
4.7k
Si9405
22µF
25V
TPS
22µF
25V
TPS
0.1µF
5V
6V TO
15V
50µH
CTX50-4
0.05Ω
I
OUT
= (I
PROG
)(20,000)
R
PROG
= 90k FOR 1A OUTPUT
+ +
11
LT1620/LT1621
PACKAGE DESCRIPTIO
U
Dimensions in inches (millimeters) unless otherwise noted.
GN Package
16-Lead Plastic SSOP (Narrow 0.150)
(LTC DWG # 05-08-1641)
GN16 (SSOP) 0895
* 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
12
3
4
5
6
7
8
0.229 – 0.244
(5.817 – 6.198)
0.150 – 0.157**
(3.810 – 3.988)
16
15
14
13
0.189 – 0.196*
(4.801 – 4.978)
12 11 10
9
0.016 – 0.050
(0.406 – 1.270)
0.015 ± 0.004
(0.38
± 0.10)
× 45°
0° – 8° TYP
0.0075 – 0.0098
(0.191 – 0.249)
0.053 – 0.069
(1.351 – 1.748)
0.008 – 0.012
(0.203 – 0.305)
0.004 – 0.009
(0.102 – 0.249)
0.025
(0.635)
BSC
1
2
3
4
0.150 – 0.157**
(3.810 – 3.988)
8
7
6
5
0.189 – 0.197*
(4.801 – 5.004)
0.228 – 0.244
(5.791 – 6.197)
0.016 – 0.050
0.406 – 1.270
0.010 – 0.020
(0.254 – 0.508)
× 45°
0°– 8° TYP
0.008 – 0.010
(0.203 – 0.254)
SO8 0996
0.053 – 0.069
(1.346 – 1.752)
0.014 – 0.019
(0.355 – 0.483)
0.004 – 0.010
(0.101 – 0.254)
0.050
(1.270)
TYP
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
*
**
MS8 Package
8-Lead MSOP
(LTC DWG # 05-08-1660)
S8 Package
8-Lead Plastic Small Outline (Narrow 0.150)
(LTC DWG # 05-08-1610)
MSOP08 0596
* 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
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. 
 INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
12
3
4
0.192 ± 0.004
(4.88 ± 0.10)
8
7
6
5
0.118 ± 0.004*
(3.00 ± 0.10)
0.118 ± 0.004**
(3.00 ± 0.10)
0.021 ± 0.004
(0.53 ± 0.01)
0° – 6° TYP
SEATING
PLANE
0.007
(0.18)
0.040 ± 0.006
(1.02 ± 0.15)
0.012
(0.30)
0.006 ± 0.004
(0.15 ± 0.10)
0.025
(0.65)
TYP
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 representation that
the interconnection of its circuits as described herein will not infringe on existing patent rights.
12
LT1620/LT1621
LINEAR TECHNOLOGY CORPORATION 1996
16201f LT/GP 0197 7K • PRINTED IN USA
TYPICAL APPLICATION
U
Electronic Circuit Breaker
AVG
PROG
V
CC
+IN
SENSE
LT1620MS8
1
2
3
4
8
7
I
OUT
GND
–IN
6
5
4.7k
33k
100k
33k
C
DELAY
0.1µF
5V
0.033Ω
5V AT 1A
PROTECTED
FAULT
LT1620/21 • TA03
1N4148
2N3904
1k
2N3904
Si9434DY
100Ω
TYPICAL DC TRIP AT 1.6A
3A FAULT TRIPS
IN 2ms WITH C
DELAY
= 1.0µF
RELATED PARTS
PART NUMBER DESCRIPTION COMMENTS
LTC
®
1435 High Efficiency Low Noise Synchronous Step-Down 16-Pin Narrow SO and SSOP, V
IN
≤ 36V, Programmable
Switching Regulator Constant Frequency
LTC1436/LTC1436-PPL/ High Efficiency Low Noise Synchronous Step-Down Full-Featured Single Controller, V
IN
≤ 36V, Programmable
LTC1437 Switching Regulator Controllers Constant Frequency
LTC1438/LTC1439 Dual High Efficiency Low Noise Synchronous Step-Down Full-Featured Dual Controllers, V
IN
≤ 36V, Programmable
Switching Regulators Constant Frequency
LT1510 1.5A Constant-Current/Constant-Voltage Battery Charger Step-Down Charger for Li-Ion, NiCd and NiMH
LT1511 3.0A Constant-Current/Constant-Voltage Battery Charger Step-Down Charger that Allows Charging During Computer
with Input Current Limiting Operation and Prevents Wall-Adapter Overload
LT1512 SEPIC Constant-Current/Constant-Voltage Battery Charger Step-Up/Step-Down Charger for up to 1A Charging Current
LT1513 SEPIC Constant-Current/Constant-Voltage Battery Charger Step-Up/Step-Down Charger for up to 2A Charging Current
LTC1538-AUX Dual High Efficiency Low Noise Synchronous Step-Down 5V Standby in Shutdown, V
IN
≤ 36V, Programmable
Switching Regulator Constant Frequency
LTC1539 Dual High Efficiency Low Noise Synchronous Step-Down 5V Standby in Shutdown, V
IN
≤ 36V, Programmable
Switching Regulator Constant Frequency
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
●
(408) 432-1900
FAX: (408) 434-0507
●
TELEX: 499-3977
●
www.linear-tech.com
P1-P3P4-P6P7-P9P10-P12

LT1621IGN#PBF

Mfr. #:
Buy LT1621IGN#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Current Sense Amplifiers Dual R-to-R Current Sense Amp
Lifecycle:
New from this manufacturer.
Delivery:
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