Datasheet

LTC2997
5
2997fa
LTC2997 Internal Sensor
Thermal Step Response
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation of V
PTAT
–
Voltage vs Current Supply Current vs Temperature
Load Regulation of V
REF
–
Voltage vs Current
LOAD CURRENT (mA)
1.780
V
REF
(V)
1.800
1.790
0
2997 G10
1.820
1.810
–4 –2 2 4
V
CC
= 2.5V
V
CC
= 3.5V
V
CC
= 4.5V
V
CC
= 5.5V
TIME (s)
AIR
0
–50
–25
V
PTAT
(°C)
0
100
75
50
25
5
2997 G13
125
LTC2997 CONNECTED VIA 5 INCH
30AWG WRAPPING WIRES
12
3
4
ICE
WATER
BOILING
WATER
T
A
(°C)
–50
150
SUPPLY CURRENT (µA)
160
190
180
170
50
100
2997 G12
200
–25 0 25
75
125 150
T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.
LOAD CURRENT (mA)
–4
1.22
V
PTAT
(V)
1.23
1.26
1.25
1.24
–2 0
4
2997 G11
1.27
1.28
2
V
CC
= 2.5V
V
CC
= 3.5V
V
CC
= 4.5V
V
CC
= 5.5V
I
LEAKAGE
(nA)
–200
–6
T
RMT
ERROR (°C)
4
2
0
–2
–4
0
100
2997 G14
6
–100 200
Remote Temperature Error vs
Leakage Current at D
+
with
Remote Diode at 25°C, T
RMT
Single Wire Remote Temperature
Error vs Potential Difference Between
Remote and Local Ground (VAC)
FREQUENCY (kHz)
0.1
0.01
ABSOLUTE TEMPERATURE ERROR (°C)
1
0.1
10
1000
2997 G15
10
1
100
VAC = 50mV
P-P