ltc3827ig-1 Linear Technology Corporation, ltc3827ig-1 Datasheet - Page 6

• Manufacturer Part Number: ltc3827ig-1
• Description: Low Iq, Dual, 2-phase Synchronous Step-down Controller
• Manufacturer: Linear Technology Corporation

LTC3827-1
TYPICAL PERFOR A CE CHARACTERISTICS
6
–100
–200
–300
–400
–500
–600
–700
–800
1.05
1.15
1.10
1.00
0.95
0.90
0.85
0.80
120
1.20
100
200
100
80
40
60
20
0
0
–45
–45
Foldback Current Limit
0
TRACK/SS Pull-Up Current
vs Temperature
Sense Pins Total Input Current
vs Temperature
TRACK/SS = 1V
0.1
–30
–30
0.2
–15
–15
FEEDBACK VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
0.3
0
0
V
V
V
OUT
OUT
OUT
0.4 0.5
15
15
= 10V
= 3.3V
= OV
30
30
0.6 0.7 0.8
45
45
W
60
60
38271 G16
75
38271 G19
75
38271 G22
U
0.9
90
90
0.85
0.75
0.50
1.00
0.95
0.90
0.80
0.70
0.65
0.60
0.55
100
85
75
60
25
20
15
10
95
90
80
70
65
0
5
–45
–45
5
Quiescent Current vs Temperature
Shutdown (RUN) Threshold
vs Temperature
Shutdown Current
vs Input Voltage
PLLIN/MODE = 0V
–30
–30
10
–15
–15
INPUT VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
15
0
0
15
15
20
30
30
45
45
25
60
60
30
75
38271 G23
38271 G17
75
38271 G20
35
90
90
804
802
798
796
792
808
806
800
794
800
700
600
500
400
300
200
100
12
10
8
6
4
2
0
0
–45
–45
SENSE Pins Total Input
Bias Current vs I
0
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
V
SENSE
–30
0.2
–25
–15
= 3.3V
0.4
–5
TEMPERATURE (°C)
TEMPERATURE (°C)
V
V
V
I
0
TH
PLLLPF
PLLLPF
PLLLPF
VOLTAGE (V)
0.6
15
15
TH
= INTV
= FLOAT
= GND
30
0.8
35
CC
45
55
1
60
1.2
75
38271 G18
38271fd
75
38271 G21
38271 G24
1.4
90
95