LTC3834-1 Datasheet, PDF (6/28 Pages) Linear Technology – 30μA IQ Synchronous Step-Down Controller

LTC3834-1
TYPICAL PERFOR A CE CHARACTERISTICS T_A = 25ºC, unless otherwise noted.
SENSE Pins Total Input Bias
Current vs I_TH
4
3
2
1
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4
I_TH VOLTAGE (V)
38341 G18
TRACK/SS Pull-Up Current vs
Temperature
1.30
1.25
1.20
1.15
1.10
1.05
1.00
0.95
0.90
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38341 G19
Shutdown (RUN) Threshold vs
Temperature
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38341 G20
Regulated Feedback Voltage vs
Temperature
808
806
804
802
800
798
796
794
792
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38341 G21
SENSE Pins Total Input Bias
Current vs Temperature
60
30
V_OUT = 10V
0
–30
V_OUT = 3.3V
–60
–90
–120
–150
–180
–210
V_OUT = 0V
–240
–270
–300
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38341 G22
Shutdown Current vs Input
Voltage
12
10
8
6
4
2
0
5 10 15 20 25 30 35
INPUT VOLTAGE (V)
38341 G23
6
Oscillator Frequency vs
Temperature
800
700
600
V_PLLLPF = INTV_CC
500
400
V_PLLLPF = FLOAT
300
V_PLLLPF = GND
200
100
0
–45 –25
–5 15 35 55
TEMPERATURE (°C)
75 95
38341 G24
Undervoltage Lockout Threshold
vs Temperature
4.2
4.1
4.0
RISING
3.9
3.8
3.7
FALLING
3.6
3.5
3.4
3.3
3.2
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
38341 G25
38341f