lt3070 Linear Technology Corporation, lt3070 Datasheet - Page 10

• Manufacturer Part Number: lt3070
• Description: 5a, Low Noise, Programmable Output, 85mv Dropout Linear Regulator
• Manufacturer: Linear Technology Corporation

LT3070
typicAl perFormAnce chArActeristics
50mV/DIV
0
1mV/DIV
0.001
0.01
V
300
250
200
150
100
1.0
0.1
50
OUT
V
0
IN
–75
10
Input Voltage Line Regulation
Output Noise Spectral Density
Input Voltage Line Transient
Response
V
V
I
C
V
V
V
I
OUT
OUT
IN
OUT
OUT
BIAS
IN
OUT
–50
= 1.3V
= 2.05V TO 2.7V
= 5A
= 10mA
= 1V
= 16.9µF
= 1.8V
= 3.3V
–25
100
TEMPERATURE (°C)
0
FREQUENCY (Hz)
25
20µs/DIV
50
1k
75
V
V
I
C
C
OUT
BIAS
OUT
OUT
REF/BYP
100
= 5A
10k
= 1V
= 16.9µF
= 2.5V
125
= 0.01µF
150
3070 G39
3070 G36
3070 G42
100k
175
200mV/DIV
10mV/DIV
V
V
BIAS
OUT
80
70
20
10
20
18
16
14
12
10
60
50
40
30
0
8
6
4
2
0
0.01
0
RMS Output Noise
vs Output Current
Output Voltage Start-Up Time
vs C
Bias Voltage Line Transient
Response
V
V
V
I
C
V
V
C
OUT
V
I
C
SEE APPLICATIONS
INFORMATION FOR
START-UP DETAILS
IN
BIAS
OUT
OUT
OUT
IN
BIAS
OUT
BIAS
OUT
= 1.3V
= V
= 5A
REF/BYP
= 1V
= 16.9µF
= 2.5V
= 10mA
= 16.9µF
V
V
V
= 10µF + 4.7µF + 2.2µF
= 3.3V
= 2.5V TO 3.3V
0.1
OUT(NOMINAL)
OUT
OUT
OUT
REF/BYP CAPACITANCE (µF)
OUTPUT CURRENT (A)
= 1.8V
= 1.2V
= 0.8V
0.1
0.2
20µs/DIV
+ 300mV
0.3
1
0.4
3070 G40
3070 G37
3070 G43
0.5
10
100µV/DIV
V
400
350
300
200
150
100
350
340
330
320
310
300
290
280
270
260
250
250
OUT
50
0
–75
0
Nap Mode Recovery Time vs I
Output Noise (10Hz to 100kHz)
V
I
C
VIOC Amplifier IN-to-OUT Servo
Voltage
V
V
EN = LOW TO HIGH
I
OUT
V
OUT
OUT
OUT
BIAS
IN
BIAS
–50
= V
= 5A
= 5A (SET BY A RESISTOR LOAD)
= 1V
= 16.9µF
= 3.3V
= 2.5V
V
C
V
C
V
C
–25
OUT(NOM)
OUT
OUT
OUT
OUT
OUT
OUT
1
OUTPUT CURRENT (A)
= 1.2V,
= 1.8V,
= 117µF
= 117µF
= 0.8V,
= 117µF
0
TEMPERATURE (°C)
+ 300mV
25
2
1ms/DIV
50
75 100
3
125
4
150
OUT
3070 G38
3070 G41
3070 G44
3070f
175
5