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LTC3557 Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3557
Description  USB Power Manager with Li-Ion Charger and Three Step-Down Regulators
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3557 Datasheet(HTML) 7 Page - Linear Technology

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LTC3557/LTC3557-1
7
35571fc
TYPICAL PERFORMANCE CHARACTERISTICS
IBAT vs VBAT
Input Disconnect Waveform
Forward Voltage vs Ideal Diode
Current (No External FET)
Forward Voltage
vs Ideal Diode Current
(with Si2333DS External FET)
TA = 25°C unless otherwise specified
Input Connect Waveform
Switching from 1x to 5x Mode
WALL Connect Waveform
WALL Disconnect Waveform
Switching from Suspend Mode
to 5x Mode
VBAT (V)
2.0
0
100
200
300
400
600
2.4
2.8
3.2
3.6
35571 G10
4.0
4.4
500
VBUS = 5V
10x MODE
RPROG = 2k
RCLPROG = 2k
IBAT (A)
0
0
0.05
0.10
0.15
0.20
0.25
0.2
0.4
0.6
0.8
35571 G11
1.0
1.2
VBAT = 3.2V
VBUS = 0V
TA = 25°C
VBAT = 4.2V
VBAT = 3.6V
IBAT (A)
0
15
20
25
0.6
1.0
35571 G12
10
5
0
0.2
0.4
0.8
30
35
40
VBAT = 3.8V
VBUS = 0V
TA = 25°C
VBUS
5V/DIV
VOUT
5V/DIV
IBUS
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 100mA
RCLPROG = 2k
RPROG = 2k
1ms/DIV
35571 G25
VBUS
5V/DIV
VOUT
5V/DIV
IBUS
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 100mA
RCLPROG = 2k
RPROG = 2k
1ms/DIV
35571 G26
ILIM0/ILIM1
5V/DIV
IBUS
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 50mA
RCLPROG = 2k
RPROG = 2k
1ms/DIV
35571 G27
ILIM0
5V/DIV
VOUT
5V/DIV
IBUS
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 100mA
RCLPROG = 2k
RPROG = 2k
ILIM1 = 5V
100μs/DIV
35571 G28
WALL
5V/DIV
VOUT
5V/DIV
IWALL
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 100mA
RPROG = 2k
1ms/DIV
35571 G29
WALL
5V/DIV
VOUT
5V/DIV
IWALL
0.5A/DIV
IBAT
0.5A/DIV
VBAT = 3.75V
IOUT = 100mA
RPROG = 2k
1ms/DIV
35571 G30


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