LT1185 LINER [Linear Technology], LT1185 Datasheet - Page 4

• Manufacturer Part Number: LT1185
• Description: Low Dropout Regulator
• Manufacturer: LINER [Linear Technology]

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