LT1521CS8-3.3#PBF Linear Technology, LT1521CS8-3.3#PBF Datasheet - Page 7
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LT1521CS8-3.3#PBF
Manufacturer Part Number
LT1521CS8-3.3#PBF
Description
IC LDO REG W/SHTDWN 3.3V 8-SOIC
Manufacturer
Linear Technology
Datasheet
1.LT1521CST-5PBF.pdf
(16 pages)
Specifications of LT1521CS8-3.3#PBF
Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
4.3 ~ 20 V
Voltage - Dropout (typical)
0.5V @ 300mA
Number Of Regulators
1
Current - Output
300mA
Current - Limit (min)
320mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Primary Input Voltage
20V
Output Voltage Fixed
3.3V
Dropout Voltage Vdo
500mV
No. Of Pins
8
Output Current
300mA
Voltage Regulator Case Style
SOIC
Operating Temperature Range
0°C To +125°C
Rohs Compliant
Yes
Voltage Regulator Type
Linear
Topology
LDO
Regulator Output Type
Fixed
Polarity Type
Positive
Number Of Outputs
Single
Input Voltage (min)
-20V
Input Voltage (max)
20V
Output Voltage
3.3V
Package Type
SOIC N
Load Regulation
-30mV
Line Regulation
20mV
Operating Temp Range
0C to 125C
Operating Temperature Classification
Commercial
Dropout Voltage@current (max)
0.17@1mA/0.6@300mA
Dropout Voltage@current (typ)
0.13@1mA/0.5@300mA
Pin Count
8
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TYPICAL PERFORMANCE CHARACTERISTICS
200
175
150
125
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.6
0.5
0.4
0.3
0.2
0.1
75
50
25
0
0
0
–50
–50
–50
Shutdown Pin Threshold
(Off-to-On)
Adjust Pin Bias Current
Current Limit
V
V
IN
OUT
–25
–25
–25
= 7V
= 0V
I
LOAD
0
0
0
TEMPERATURE ( C)
TEMPERATURE ( C)
TEMPERATURE ( C)
= 1mA
25
25
25
I
LOAD
50
50
50
= 300mA
75
75
75
W
LT1521 • TPC22
LT1521 • TPC25
LT1521 • TPC28
100
100
100
U
125
125
125
3.0
2.5
2.0
1.5
1.0
0.5
50
45
40
35
30
25
20
15
10
0
5
0
8
7
6
5
4
3
2
1
0
–50
–50
Reverse Output Current
0
Shutdown Pin Current
Reverse Output Current
T
V
CURRENT FLOWS
INTO OUTPUT PIN
V
(LT1521-3/LT1521-3.3
LT1521-5)
V
V
J
IN
OUT
OUT
V
V
V
V
V
1
SHDN
= 25 C
–25
–25
IN
OUT
OUT
OUT
OUT
= 0V
= 0V
= V
= V
2
= 3V (LT1521-3)
= 3.3V (LT1521-3.3)
= 5V (LT1521-5)
= 3.75V (LT1521)
= 0V
SENSE
ADJ
OUTPUT VOLTAGE (V)
0
0
3
LT1521-3
TEMPERATURE ( C)
TEMPERATURE ( C)
LT1521-3.3
(LT1521)
4
25
25
5
50
50
6
LT1521
LT1521-5
75
7
75
8
LT1521 • TPC26
LT1521 • TPC29
LT1521 • TPC23
100
100
9
125
125
10
LT1521-3.3/LT1521-5
0.6
0.5
0.4
0.3
0.2
0.1
66
64
62
60
58
56
54
52
25
20
15
10
0
5
0
–50
0
Shutdown Pin Input Current
Current Limit
0
Ripple Rejection
V
RIPPLE AT f = 120Hz
I
LOAD
V
IN
–25
LT1521/LT1521-3
1
OUT
1
= V
SHUTDOWN PIN VOLTAGE (V)
= 150mA
2
= 0V
OUT
2
0
TEMPERATURE ( C)
INPUT VOLTAGE (V)
(NOMINAL) + 1V + 0.5V
3
25
3
4
50
5
4
6
75
5
7
LT1521 • TPC30
LT1521 • TPC24
LT1521 • TPC27
P-P
100
1521335fb
6
8
7
125
9
7