LTC3834 Linear Technology, LTC3834 Datasheet - Page 7

• Manufacturer Part Number: LTC3834
• Description: Synchronous Step-Down Controller
• Manufacturer: Linear Technology

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TYPICAL PERFORMANCE CHARACTERISTICS
808
806
804
802
800
798
796
794
792
–45
Regulated Feedback Voltage
vs Temperature
–30
–15
TEMPERATURE (°C)
0
800
700
600
400
300
200
500
100
5.3
5.2
5.1
4.9
4.8
4.6
5.0
4.7
15
0
–45
0
Oscillator Frequency
vs Temperature
INTV
30
–25
CC
10
45
vs Load Current
60 75
–5
LOAD CURRENT (mA)
TEMPERATURE (°C)
20
V
V
V
PLLLPF
PLLLPF
PLLLPF
3834 G21
V
15
IN
30
= 12V
EXTV
90
= INTV
= FLOAT
= GND
35
CC
CC
40
= 5V
55
–120
–150
–180
–210
–240
–270
–300
–30
–60
–90
60
30
0
50
–45
75
SENSE Pins Total Input Bias
Current vs Temperature
3834 G26
3834 G24
–30
95
60
V
OUT
–15
= 10V
V
TEMPERATURE (°C)
OUT
0
= 0V
15
30
V
OUT
45
= 3.3V
4.2
4.1
4.0
3.9
3.8
3.7
3.6
3.5
3.4
3.3
3.2
60 75
7
6
5
4
3
2
1
0
–45
–45
Undervoltage Lockout Threshold
vs Temperature
Shutdown Current vs Temperature
T
3834 G22
A
–30
–30
= 25°C, unless otherwise noted.
90
–15
–15
TEMPERATURE (°C)
TEMPERATURE (°C)
0
0
FALLING
RISING
15
15
12
10
8
6
4
2
0
5
Shutdown Current
vs Input Voltage
30
30
45
45
10
60 75
60
INPUT VOLTAGE (V)
15
75
3834 G25
3834 G27
90
90
LTC3834
20
25
30
3834 G23
3834fb
7
35