LTC3836_15 Datasheet, PDF (5/30 Pages) Linear Technology – Dual 2-Phase, No RSENSETM Low VIN Synchronous Controller

LTC3836
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C unless otherwise noted.
Maximum Current Sense Voltage
vs I_TH Pin Voltage
100
FORCED CONTINUOUS
MODE
80
PULSE-SKIPPING
MODE
60
40
20
0
–20
0.5
1
1.5
I_TH VOLTAGE (V)
2
3836 G09
RUN/SS Pull-Up Current
vs Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3836 G13
Undervoltage Lockout Threshold
vs Temperature
2.50
2.45
V_IN RISING
2.40
2.35
2.30
V_IN FALLING
2.25
2.20
2.15
2.10
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3836 G16
Regulated Feedback Voltage
vs Temperature
0.606
0.605
0.604
0.603
0.602
0.601
0.600
0.599
0.598
0.597
0.596
0.595
0.594
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3836 G11
Maximum Current Sense
Threshold vs Temperature
135 _{IPRG = FLOAT}
130
125
120
115
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3836 G14
Shutdown Quiescent Current
vs Input Voltage
18
16
14
12
10
8
6
4
2
0
2.5
3.0
3.5
4.0
4.5
INPUT VOLTAGE (V)
3836 G17
Shutdown (RUN/SS) Threshold
vs Temperature
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
–60 –40 –20 0 20 40 60 80 100
TEMPERATURE (°C)
3836 G12
Oscillator Frequency
vs Temperature
10
8
6
4
2
0
–2
–4
–6
–8
–10
–60 –40 –20 0 20 40 60
TEMPERATURE (°C)
80 100
3836 G15
RUN/SS Start-Up Current
vs Input Voltage
0.9
RUN/SS = 0V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
2.5
3.0
3.5
4.0
INPUT VOLTAGE (V)
4.5
3836 G18
3836fb
5