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LT1121IS8-5 Datasheet(PDF) 2 Page - Linear Technology

Part # LT1121IS8-5
Description  Micropower Low Dropout Regulators with Shutdown
Download  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1121IS8-5 Datasheet(HTML) 2 Page - Linear Technology

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LT1121/LT1121-3.3/LT1121-5
Storage Temperature Range ................. – 65
°C to 150°C
Operating Junction Temperature Range (Note 2)
LT1121C-X ......................................... 0
°C to 125°C
LT1121I-X ..................................... – 40
°C to 125°C
Lead Temperature (Soldering, 10 sec) .................. 300
°C
*For applications requiring input voltage ratings greater than 30V, contact the factory.
Input Voltage ......................................................
±30V*
Output Pin Reverse Current ................................. 10mA
Adjust Pin Current ............................................... 10mA
Shutdown Pin Input Voltage (Note 1) ........ 6.5V, – 0.6V
Shutdown Pin Input Current (Note 1) .................. 20mA
Output Short-Circuit Duration ......................... Indefinite
A
G
A
U
A
R
BSOLUTEXI
TI
S
ELECTRICAL C
C
HARA TERISTICS
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Regulated Output Voltage
LT1121-3.3
VIN = 3.8V, IOUT = 1mA, TJ = 25°C
3.250
3.300
3.350
V
(Note 3)
4.3V < VIN < 20V, 1mA < IOUT < 150mA
q
3.200
3.300
3.400
V
LT1121-5
VIN = 5.5V, IOUT = 1mA, TJ = 25°C
4.925
5.000
5.075
V
6V < VIN < 20V, 1mA < IOUT < 150mA
q
4.850
5.000
5.150
V
LT1121 (Note 4)
VIN = 4.3V, IOUT = 1mA, TJ = 25°C
3.695
3.750
3.805
V
4.8V < VIN < 20V, 1mA < IOUT < 150mA
q
3.640
3.750
3.860
V
Line Regulation
LT1121-3.3
∆VIN = 4.8V to 20V, IOUT = 1mA
q
1.5
10
mV
LT1121-5
∆VIN = 5.5V to 20V, IOUT = 1mA
q
1.5
10
mV
LT1121 (Note 4)
∆VIN = 4.3V to 20V, IOUT = 1mA
q
1.5
10
mV
PACKAGE/ORDER I FOR ATIO
θJA ≈ 150°C/W
θJA ≈ 50°C/W
1
2
3
BOTTOM VIEW
IN
GND
OUT
Z PACKAGE
3-LEAD PLASTIC TO-92
LT1121 • PO02
3
2
1
FRONT VIEW
TAB IS
GND
OUTPUT
GND
VIN
ST PACKAGE
3-LEAD PLASTIC SOT-223
LT1121 • PO03
ORDER PART NUMBER
ORDER PART
NUMBER
LT1121CZ-3.3
LT1121IZ-3.3
LT1121CZ-5
LT1121IZ-5
Consult factory for Military grade parts.
LT1121CN8
LT1121CN8-3.3
LT1121CN8-5
LT1121IN8
LT1121IN8-3.3
LT1121IN8-5
LT1121CS8
LT1121CS8-3.3
LT1121CS8-5
LT1121IS8
LT1121IS8-3.3
LT1121IS8-5
LT1121ACS8
LT1121ACS8-3.3
LT1121ACS8-5
LT1121AIS8
LT1121AIS8-3.3
LT1121AIS8-5
1121
11213
11215
1121I
121I3
121I5
1121A
121A3
121A5
121AI
121AI3
121AI5
LT1121CST-3.3
LT1121IST-3.3
LT1121CST-5
LT1121IST-5
S8 PART
MARKING
ORDER PART
NUMBER
1
2
3
4
8
7
6
5
TOP VIEW
OUT
NC/ADJ*
GND
NC
IN
NC**
NC**
SHDN
N8 PACKAGE
8-LEAD PLASTIC DIP
S8 PACKAGE
8-LEAD PLASTIC SOIC
PIN 2 = NC FOR LT1121-3.3/LT1121-5
= ADJ FOR LT1121
PINS 6 AND 7 ARE FLOATING (NO
INTERNAL CONNECTION) ON THE
STANDARD S8 PACKAGE.
PINS 6 AND 7 CONNECTED TO GROUND
ON THE A VERSION OF THE LT1121 (S8 ONLY).
CONNECTING PINS 6 AND 7 TO THE
GROUND PLANE WILL REDUCE THERMAL
RESISTANCE. SEE THERMAL RESISTANCE
TABLES IN THE APPLICATIONS INFORMATION
SECTION.
*
**
θJA ≈ 120°C/W (N8, S8)
θJA ≈ 70°C/W (AS8)


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