LTC3856 Datasheet, PDF (8/40 Pages) Linear Technology – 2-Phase Synchronous Step-Down DC/DC Controller with Diffamp

LTC3856
Typical Performance Characteristics
Shutdown (RUN) Threshold
vs Temperature
1.25
ON
1.20
1.15
OFF
1.10
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
3856 G15
Regulated Feedback Voltage
vs Temperature
0.605
0.604
0.603
0.602
0.601
0.600
0.599
0.598
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3856 G16
Oscillator Frequency
vs Temperature
900
800
V_FREQ = INTV_CC
700
600
V_FREQ = 1.2V
500
400
300
V_FREQ = GND
200
100
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3856 G17
Undervoltage Lockout Threshold
(INTV_CC) vs Temperature
4.0
ON
3.8
3.6
3.4
OFF
3.2
3.0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3856 G18
Oscillator Frequency
vs Input Voltage
520
510
500
490
480
5
10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3856 G19
Shutdown Current
vs Input Voltage
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40
INPUT VOLTAGE (V)
3856 G20
Shutdown Current vs Temperature
70
60
50
40
30
20
10
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3856 G21
Quiescent Current vs Temperature
without EXTV_CC
6
5
4
3
2
1
0
–50 –25
0 25 50 75
TEMPERATURE (°C)
100 125
3856 G22
3856f