LTC3834 Datasheet, PDF (7/28 Pages) Linear Technology – 30μA IQ Synchronous Step-Down Controller

LTC3834
TYPICAL PERFORMANCE CHARACTERISTICS T_A = 25°C, unless otherwise noted.
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)
3834 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)
3834 G22
Shutdown Current
vs Input Voltage
12
10
8
6
4
2
0
5 10 15 20 25 30 35
INPUT VOLTAGE (V)
3834 G23
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
3834 G24
Undervoltage Lockout Threshold
vs Temperature
4.2
4.1
4.0
3.9
RISING
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)
3834 G25
INTV_CC vs Load Current
5.3
5.2
V_IN = 12V
5.1
5.0
4.9
EXTV_CC = 5V
4.8
4.7
4.6
0
10 20 30 40 50 60
LOAD CURRENT (mA)
3834 G26
Shutdown Current vs Temperature
7
6
5
4
3
2
1
0
–45 –30 –15 0 15 30 45 60 75 90
TEMPERATURE (°C)
3834 G27
3834fb
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