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LT1086_15 Datasheet, PDF (6/16 Pages) Linear Technology – 1.5A Low Dropout Positive Regulators Adjustable and Fixed 2.85V, 3.3V, 3.6V, 5V, 12V | |||
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LT1086 Series
TYPICAL PERFORMANCE CHARACTERISTICS
LT1086-5 Ripple Rejection
vs Current
100
90
80
fR = 120Hz
VRIPPLE ⤠3VP-P
70
60
fR = 20kHz
VRIPPLE ⤠0.5VP-P
50
40
30
20 VOUT = 5V
10
CADJ = 25µF
COUT = 25µF
0
0 0.25 0.5 0.75 1.0 1.25 1.5
OUTPUT CURRENT (A)
LT1086 ⢠TPC10
LT1086 Line Transient Response
60
40
20
CADJ = 1µF
0
â20
CADJ = 0
â40 VOUT = 10V
â60
IOUT = 0.2A
CIN = 1µF TANTALUM
14 COUT = 10µF TANTALUM
13
12
11
0
100
200
TIME (µs)
LT1086 ⢠TPC13
LT1086H Dropout Voltage
2
INDICATES GUARANTEED TEST POINT
â 55°C ⤠TJ ⤠150°C
0°C ⤠TJ ⤠125°C
1
TJ = â 55°C
TJ = 25°C
TJ = 150°C
0
0
0.1 0.2 0.3 0.4 0.5
OUTPUT CURRENT (A)
LT1086 ⢠TPC16
LT1086-12 Ripple Rejection
80
VRIPPLE ⤠3VP-P VRIPPLE ⤠0.5VP-P
70
60
(VIN â VOUT) ⥠3V
50
40
(VIN â VOUT) ⥠VDROPOUT
30
20
10
IOUT = 1.5A
0
10
100
1k
10k
FREQUENCY (Hz)
100k
LT1086 ⢠TPC11
LT1086 Load Transient Response
0.3
0.2
CADJ = 0
0.1
0
â0.1
CADJ = 1µF
â0.2 CIN = 1µF TANTALUM
â0.3 COUT = 10µF TANTALUM
1.5
VOUT = 10V
VIN = 13V
1.0
PRELOAD = 100mA
0.5
0
0
50
100
TIME (µs)
LT1086 ⢠TPC14
LT1086H Load Regulation
0.10
âI = 0.5A
0.05
0
â0.05
â0.10
â0.15
â0.20
â50 â25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1086 ⢠TPC17
LT1086-12 Ripple Rejection
vs Current
100
90
80
fR = 120Hz
70
VRIPPLE ⤠3VP-P
60
50
fR = 20kHz
VRIPPLE ⤠0.5VP-P
40
30
20 VOUT = 5V
10
CADJ = 25µF
COUT = 25µF
0
0 0.25 0.5 0.75 1.0 1.25 1.5
OUTPUT CURRENT (A)
LT1086 ⢠TPC12
LT1086H Short-Circuit Current
1.2
1.0
0.8
0.6
0.4
0.2
0
0
GUARANTEED
OUTPUT CURRENT
5
10
15
20
25
INPUT/OUTPUT DIFFERENTIAL (V)
LT1086 ⢠TPC15
LT1086H Ripple Rejection
vs Current
100
90
80
fR = 120Hz
70
VRIPPLE ⤠3VP-P
60
fR = 20kHz
50
VRIPPLE ⤠0.5VP-P
40
30
20 VOUT = 5V
10
CADJ = 25µF
COUT = 25µF
0
0
0.1
0.2
0.3
0.4
0.5
OUTPUT CURRENT (A)
LT1086 ⢠TPC18
6
sn1086 1086ffs
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