Datasheet

LT3694/LT3694-1
6
36941fb
TEMPERATURE (°C)
–50
0
EN/UVLO THRESHOLD (V)
0.4
0.8
1.2
0
50
100
1.4
0.2
0.6
1.0
150
36941 G11
UVLO SWITCHING THRESHOLD
BIAS CURRENT
SHUTDOWN THRESHOLD
TEMPERATURE (°C)
–50
–5
NORMALIZED CURRENT LIMIT (%)
–3
2
0
50
100
5
–1
–4
–2
4
1
3
0
150
36941 G13
DRV CURRENT (mA)
0
V
IN
TO DRV VOLTAGE (V)
2.0
2.5
1.5
1.0
6
10
42
8
0.5
0
36941 G15
0 6
10
42
8
DRV CURRENT (mA)
BIAS TO DRV VOLTAGE (V)
0.3
0.4
0.2
0.1
0
0.5
36941 G16
V
IN
= 5V
V
BIAS
= 4.4V
TYPICAL PERFORMANCE CHARACTERISTICS
LDO Current Limit
vs V
FB
(Foldback)
LDO Minimum V
IN
to DRV Voltage
vs DRV Current
LDO Minimum BIAS to DRV
Voltage vs DRV Current 10Hz to 100kHz LDO Output Noise
EN/UVLO Thresholds
vs Temperature
Minimum Input Voltage
vs Load Current (V
IN
to Start)
LDO Current Limit vs Temperature
V
IN
= 12V, T
A
= 25°C, unless otherwise noted.
TEMPERATURE (°C)
–50
2.0
TRK/SS CURRENT (µA)
2.5
3.5
0
50
100
4.0
3.0
150
36941 G10
I
TRK/SS
vs Temperature
FEEDBACK VOLTAGE (V)
0
CURRENT LIMIT VOLTAGE (mV)
40
50
30
20
0.4
0.2
0.6 0.8
10
0
60
36941 G14
–40°C
+150°C
LOAD CURRENT (A)
0.001
6.0
INPUT VOLTAGE (V)
6.5
0.01 0.1 1
5.5
5.0
4.5
4.0
7.0
36941 G12
V
OUT
= 5V
f
SW
= 800kHz
TO RUN
TO START
1ms/DIV
10mV/DIV
36941 G17
V
OUT
= 2.5V
I
OUT
= 0.25A
ZXTCM322
PASS XSTR