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LTC3422 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3422
Description  1.5A, 3MHz Synchronous Step-Up DC/DC Converter with Output Disconnect
PDF  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3422 Datasheet(HTML) 5 Page - Linear Technology

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LTC3422
5
3422fa
Burst Mode Output Current
Threshold vs RBURST (3.3V Output)
FB Voltage vs Temperature
Frequency vs Temperature
(Normalized About 1MHz)
Burst Mode Quiescent Current
vs Temperature
Current Limit vs Temperature
RDS(ON) vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS (T
A = 25°C, unless otherwise specified)
RBURST (kΩ)
50
120
140
100
80
40
20
350
550 650 750 850
3422 G10
60
0
150 250
450
VIN = 1.25V TO 2.9V
VOUT = 3.3V
fOSC = 1MHz
EXITS BURST (AVE)
ENTERS BURST (MIN)
RBURST (kΩ)
50
120
140
100
80
40
20
275
425 500 575 650
3422 G11
60
0
125 200
350
VIN = 1.8V TO 4.2V
VOUT = 5V
fOSC = 1MHz
EXITS BURST (AVE)
ENTERS BURST (MIN)
TEMPERATURE (
°C)
–45
1.213
1.214
1.215
1.216
1.217
–30 –15
0
15
3422 G12
30
45
60
75
90
TEMPERATURE (
°C)
–45
0.98
0.99
1.00
1.01
1.02
–30 –15
0
15
3422 G13
30
45
60
75
90
TEMPERATURE (
°C)
–45
22
24
26
28
30
–30 –15
0
15
3422 G14
30
45
60
75
90
TEMPERATURE (
°C)
–45
2.35
2.40
2.45
2.50
2.55
–30 –15
0
15
3422 G15
30
45
60
75
90
No-Load Input Current vs VIN
Maximum Output Current vs VIN
Burst Mode Output Current
Threshold vs RBURST (5V Output)
TEMPERATURE (
°C)
–45
160
280
260
240
220
200
180
–30 –15
0
15
3422 G16
30
45
60
75
90
PMOS RDS(ON)
NMOS RDS(ON)
INPUT VOLTAGE (V)
0.8
50
70
90
100
170
140
1.6
2.4 2.8
4.4
160
150
120
60
80
130
110
1.2
2
3.2 3.6
4
4.8
3422 G17
CHIP ENTERS
Burst Mode OPERATION
VOUT = 5V
VOUT = 3.3V
INPUT VOLTAGE (V)
1.80
1200
1400
1600
5.40
3422 G18
1000
800
400
2.40
3.00
3.60
4.20
4.80
600
2000
1800
fOSC = 1MHz
VOUT = 3.3V
VOUT = 5V
3.3V DIODE
RECTIFICATION
5V DIODE
RECTIFICATION



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