ltc3834-1 Linear Technology Corporation, ltc3834-1 Datasheet - Page 6

• Manufacturer Part Number: ltc3834-1
• Description: 30?a Iq Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

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