Datasheet

LTC2974
12
2974fc
For more information www.linear.com/LTC2974
Typical perForMance characTerisTics
PWRGD and FAULTBn V
OL
vs
Current Sinking
External Temperature READ_
TEMPERATURE_1 Error vs
Temperature
ALERTB V
OL
vs Current Sinking
READ_TEMPERATURE_2 Error vs
Temperature
V
DD33
Regulator Load Regulation
V
VOUT_ENn
and V
AUXFAULTB
Output
V
OH
vs Current Sourcing
V
VOUT_ENn
and V
AUXFAULTB
Output
V
OL
vs Current Sinking
LOAD CURRENT SOURCING (mA)
0
OUTPUT VOLTAGE DELTA (ppm)
30 40
0
–1000
–2000
–3000
–4000
2974 G19
10 20
50
CURRENT SOURCING (µA)
0
OUTPUT HIGH VOLTAGE (V)
4 5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
9.5
9.0
2974 G20
1 2 3
8
76
25°C
85°C
–40°C
CURRENT SINKING (mA)
0
1.4
1.2
1.0
0.8
85°C
–40°C
0.6
0.4
0.2
0
6 10
2974 G21
2 4
8
12
V
OL
(V)
25°C
CURRENT SINKING (mA)
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
15
2974 G22
5 10
20
V
OL
(V)
85°C
25°C
–40°C
TEMPERATURE (°C)
–50
ERROR (%)
50 75
1.00
0.50
0.25
0.75
0
–0.25
–0.50
–0.75
–1.00
2974 G24
–25 0 25
100
THREE TYPICAL PARTS
MMBT3906 DIODE CONNECTED BJTS
MFR_TEMP_1_GAIN_ADJ = 0.987
MFR_EXT_TEMP_1_ADC_OFF = –2°C
TEMPERATURE (°C)
–50
ERROR (%)
50 75
1.00
0.50
0.25
0.75
0
–0.25
–0.50
–0.75
–1.00
2974 G25
–25 0 25
100
THREE TYPICAL PARTS
V
DD33
= V
PWR
= 3.3V
CURRENT SINKING (mA)
0
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2974 G23
5 10
15
V
OL
(V)
85°C
25°C
–40°C