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LT1185 Datasheet(PDF) 4 Page - Linear Technology

Part # LT1185
Description  Low Dropout Regulator
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1185 Datasheet(HTML) 4 Page - Linear Technology

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4
LT1185
1185ff
Ripple Rejection vs Frequency
Ground Pin Current
INPUT-OUTPUT DIFFERENTIAL (V)
0
0
1
2
3
5
10
15
20
LT1185 • TPC01
25
4
5
30
TYPICAL
TEST POINTS
GUARANTEED
LIMIT
GUARANTEED
LIMIT
Internal Current Limit
INPUT VOLTAGE (V)
0
8
10
12
15
25
LT1185 • TPC02
6
4
510
20
30
35
2
0
VOUT = 5V
*DOES NOT INCLUDE REF CURRENT
OR OUTPUT DIVIDER CURRENT
ILOAD = 0
TJ = 25°C
Quiescent Ground Pin Current*
JUNCTION TEMPERATURE (
°C)
–50
2.37
2.38
2.39
150
LT1185 • TPC03
2.36
2.35
2.33
0
50
100
2.34
2.41
2.40
–25
25
75
125
Feedback Pin Voltage
Temperature Drift
LOAD CURRENT (A)
0
80
100
120
4
LT1185 • TPC04
60
40
0
1
2
3
20
160
140
TJ = 25°C
REGULATOR JUST AT
DROPOUT POINT
VIN – VOUT = 5V
FREQUENCY (Hz)
–20
–40
–60
–80
–100
100
10k
100k
1M
LT1185 • TPC05
0
1k
ALL OUTPUT
VOLTAGES
WITH 0.05
µF
ACROSS R2
VOUT = 5V
VIN – VOUT = 1.5V
Load Transient Response
TIME (
µs)
0
4
8
10
LT1185 • TPC06
26
12
14
16
0.1A tr,f ≤ 100ns
COUT = 2.2µF, ESR = 1Ω
COUT = 2.2µF, ESR = 2Ω
VOUT = 5V
IOUT = 1A
100mV
∆ILOAD
Output Impedance
FREQUENCY (Hz)
0.01
0.1
1
10
1M
10k
100k
LT1183 • TPC07
0.001
1k
OUTPUT IMPEDANCE IS
SET BY OUTPUT CAPACITOR
ESR IN THIS REGION
VOUT = 5V
IOUT = 1A
COUT = 2.2µF
TYPICAL PERFOR A CE CHARACTERISTICS


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