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LTC1772B Datasheet(PDF) 4 Page - Linear Technology

Part # LTC1772B
Description  Constant Frequency Current Mode Step-Down DC/DC Controller in SOT-23
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1772B Datasheet(HTML) 4 Page - Linear Technology

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LTC1772B
4
1772bfa
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage
vs Temperature
Undervoltage Lockout Trip
Voltage vs Temperature
Shutdown Threshold
vs Temperature
Maximum (VIN – SENSE) Voltage
vs Duty Cycle
Normalized Oscillator Frequency
vs Temperature
TEMPERATURE (°C)
–55
775
780
790
795
800
825
810
–15
25
45
125
1772 G01
785
815
820
805
–35
5
65
85 105
VIN = 4.2V
TEMPERATURE (°C)
–55
–10
–8
–4
–2
0
10
4
–15
25
45
125
1772 G02
–6
6
8
2
–35
5
65
85 105
VIN = 4.2V
DUTY CYCLE (%)
20
30
100
1772 G04
40
50
60
70
80
90
120
110
100
90
80
70
60
50
40
VIN = 4.2V
TA = 25°C
TEMPERATURE (°C)
–55
200
240
320
360
400
600
480
–15
25
45
125
1772 G05
280
520
560
440
–35
5
65
85 105
VIN = 4.2V
TEMPERATURE (°C)
–55
1.84
1.88
1.96
2.00
2.04
2.24
2.12
–15
25
45
125
1772 G03
1.92
2.16
2.20
2.08
–35
5
65
85 105
VIN FALLING


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