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LTC3822 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3822
Description  No RSENSETM, Low Input Voltage, Synchronous Step-Down DC/DC Controller
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3822 Datasheet(HTML) 4 Page - Linear Technology

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LTC3822
3822f
LOAD CURRENT (mA)
100
90
80
70
95
85
75
60
50
65
55
100
1000
10000
3822 G01
VIN = 3.3V
VOUT = 2.5V
VOUT = 1.8V
VOUT = 1.0V
LOAD CURRENT (mA)
100
100
90
80
70
60
50
40
30
20
10
0
10
1
0.1
0.01
1000
10000
3822 G02
EFFICIENCY
VIN = 3.3V
VIN = 3.3V
VIN = 4.2V
VIN = 4.2V
VOUT = 1.8V
POWER LOSS
ITH VOLTAGE (V)
0.5
–20
0
20
40
60
100
1
2.0
1.5
3822 G03
80
TYPICAL PERFOR A CE CHARACTERISTICS
Efficiency vs Load Current
Efficiency and Power Loss vs
Load Current
Maximum Current Sense Voltage
vs ITH Pin Voltage
Load Step
Start-Up with Internal Soft-Start
TA = 25°C unless otherwise noted.
VOUT
100mV/DIV
IL
2A/DIV
ILOAD
2A/DIV
40
µs/DIV
VIN = 3.3V
VOUT = 1.8V
ILOAD = 1A TO 3A
3822 G04
VOUT
1.8V
500mV/DIV
200
µs/DIV
VIN = 4.2V
RLOAD = 1Ω
3822 G05



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