Datasheet

LTC2997
4
2997fa
TYPICAL PERFORMANCE CHARACTERISTICS
Remote Temperature Error vs
Series Resistance, T
RS
Remote Temperature Error vs
C
DECOUPLE
(Between D
+
and D
–
)
Temperature Error with LTC2997
at Same Temperature as Remote
Diode
Remote Temperature Error vs
T
A
with Remote Diode at 25°C
Internal Temperature Error vs
T
A
, T
INT
UVLO vs Temperature
V
CC
Rising, Falling
Buffered Reference Voltage
vs Temperature, V
REF
SERIES RESISTOR ()
0
–1.5
ERROR (°C)
–1.0
0
–0.5
800600
2997 G05
0.5
1.5
1.0
200 400 1000
DECOUPLE CAPACITOR (nF)
0
ERROR (°C)
0
–0.4
–0.8
43
2997 G06
0.4
0.8
12 5
AVERAGING TIME (ms)
0.01
0
V
PTAT
NOISE (°C RMS)
0.05
0.15
0.20
0.10
1
100
2997 G07
0.25
0.30
0.1
10
V
CC
(V)
1
–1.0
ERROR (°C)
–0.8
–0.2
0
–0.4
–0.6
35
2997 G04
0.2
0.4
24
6
Temperature Error vs
V
CC
- Remote/Internal, T
VCC
V
PTAT
Noise vs Averaging Time
T
A
(°C)
–50
–3
T
RMT
ERROR (°C)
–2
0
–1
75 150100
2997 G01
3
1
2
–25 0 25 50 125
T
A
(°C)
–50
–3
T
RMT
ERROR (°C)
–2
0
–1
75 150100
2997 G02
3
1
2
–25 0 25 50 125
T
A
(°C)
–50
–3
T
INT
ERROR (°C)
–2
0
–1
75 150100
2997 G03
3
1
2
–25 0 25 50 125
T
A
(°C)
–50
1.0
UVLO (V)
1.2
1.8
2.0
1.6
1.4
25 75
175150
2997 G08
2.2
2.4
0–25 50
100 125
V
CC
RISING
V
CC
FALLING
T
A
(°C)
1.790
V
RFE
(V)
1.795
2997 G09
1.800
1.810
1.805
–50 25 75
150
0–25 50
100 125
T
A
= 25°C, V
CC
= 3.3V unless otherwise noted.