Datasheet

LT3070
7
3070fb
For more information www.linear.com/LT3070
TYPICAL PERFORMANCE CHARACTERISTICS
BIAS Pin Current in Nap Mode BIAS Pin Current vs I
OUT
GND Pin Current vs I
OUT
REF/BYP Pin Voltage
vs Temperature
BIAS Pin Undervoltage Lockout
Threshold
Output Voltage (1.8V)
vs Temperature
TEMPERATURE (°C)
–75
1.782
OUTPUT VOLTAGE (V)
1.786
1.794
1.798
1.802
75 100 125 150
1.818
3070 G10
1.790
–50 –25 0 25 50 175
1.806
1.810
1.814
I
LOAD
= 10mA
OUTPUT CURRENT (A)
0
0
GND PIN CURRENT (mA)
0.5
1.0
1.5
2.0
2.5
3.0
1 2 3 4
3070 G11
5
V
OUT
= 1.8V, V
BIAS
= 3.3V
V
OUT
= 1.2V, V
BIAS
= 3.3V
V
OUT
= 0.8V, V
BIAS
= 2.5V
V
IN
= V
OUT
+ 300mV
T
J
= 25°C
TEMPERATURE (°C)
594
REF/BYP VOLTAGE (mV)
598
602
606
596
600
604
–25 25 75 125
3070 G12
175–50–75 0 50 100 150
C
REF/BYP
= 0.01µF
TEMPERATURE (°C)
–75
BIAS PIN CURRENT (µA)
400
350
300
250
200
150
100
50
0
125
3070 G13
–25 25 75 175100–50 0 50 150
V
BIAS
= 2.5V
V
EN
= 0V
OUTPUT CURRENT (A)
0
BIAS PIN CURRENT (mA)
6
8
10
4
3070 G14
4
2
5
7
9
3
1
0
1
2
3
5
V
OUT
= 1.8V
V
BIAS
= 3.3V
V
OUT
= 0.8V
V
BIAS
= 2.5V
V
IN
= V
OUT
+ 300mV
T
J
= 25°C
TEMPERATURE (°C)
–75
UVLO THRESHOLD VOLTAGE (V)
1.5
2.0
2.5
125
3070 G15
1.0
0.5
0
–50 –25 0
25 50
75 100 150
175
V
BIAS
RISING
V
BIAS
FALLING
EN Pin Thresholds
Enable Pin Threshold and
Hysteresis vs V
BIAS
PWRGD Threshold Voltage
TEMPERATURE (°C)
–75
ENABLE PIN THRESHOLD (V)
1.2
1.6
2.0
125
3070 G16
0.8
0.4
1.0
1.4
1.8
0.6
0.2
0
–25–50
250
75 100 150
50
175
V
BIAS
= 2.5V
EN PIN RISING
EN PIN FALLING
TEMPERATURE (°C)
–75
PWRGD TRESHOLD VOLTAGE (V)
0.90
0.95
125
3070 G17
0.85
0.80
–25
25
50
175
1.00
V
OUT
FALLING
75
–50
0
150
100
V
BIAS
= 2.5V
V
OUT
= 1V
V
OUT
RISING
BIAS VOLTAGE (V)
2
ENABLE/DISABLE THRESHOLD (V)
2.0
2.5
3.0
4
3070 G52
1.5
1.0
0
2.5
3
3.5
0.5
4.0
3.5
MAX ENABLE
MIN DISABLE
TYP ENABLE
TYP DISABLE
T
J
= –55°C TO 125°C
TYPICAL HYSTERESIS = 150mV
V
BIAS