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LTC4155 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC4155
Description  Dual-Input Power Manager/ 3.5A Li-Ion Battery Charger with I2C Control and USB OTG
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4155 Datasheet(HTML) 6 Page - Linear Technology

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LTC4155
6
4155fc
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at TA ≈ TJ = 25°C (Note 2). VBUS = 5V, BATSNS = 3.7V, DVCC = 3.3V,
RCLPROG1 = RCLPROG2 = 1.21k, RPROG = 499Ω, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
hCLPROG2
(Note 4)
Ratio of Measured VBUS Current to
CLPROG2 Sense Current
2.5mA IVBUS Mode (USB Suspend)
100mA IVBUS Mode
500mA IVBUS Mode
600mA IVBUS Mode
700mA IVBUS Mode
800mA IVBUS Mode
900mA IVBUS Mode
1.00A IVBUS Mode
1.25A IVBUS Mode
1.50A IVBUS Mode
1.75A IVBUS Mode
2.00A IVBUS Mode
2.25A IVBUS Mode
2.50A IVBUS Mode
2.75A IVBUS Mode
3.00A IVBUS Mode
19
79
466
557
657
758
839
990
1222
1494
1746
1999
2175
2477
2730
2956
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
mA/mA
VCLPROG1
CLPROG1 Servo Voltage in
Current Limit
CLPROG1 IVBUS Mode
1.2
V
VCLPROG2
CLPROG2 Servo Voltage in
Current Limit
2.5mA IVBUS Mode (USB Suspend)
100mA – 3A IVBUS Modes
103
1.2
mV
V
fOSC
Switching Frequency
2.05
2.25
2.50
MHz
RPMOS
High Side Switch On Resistance
0.090
Ω
RNMOS
Low Side Switch On Resistance
0.080
Ω
RCHG
Battery Charger Current Sense
Resistance
0.040
Ω
IPEAK
Peak Inductor Current Clamp
500mA – 3A IVBUS Modes
6.7
A
Step-Up Mode PowerPath Switching Regulator (USB On-The-Go)
VBUS
Output Voltage
0mA ≤ IVBUS ≤ 500mA
4.75
5.25
V
VOUT
Input Voltage
2.9
V
IVBUSOTG
Output Current Limit
1.4
A
IVOUTOTGQ
VOUT Quiescent Current
IVBUS = 0mA
1.96
mA
VCLPROG2
Output Current Limit Servo Voltage
1.2
V
VBATSNSUVLO
VBATSNS Undervoltage Lockout
VBATSNS Falling
Hysteresis
2.65
2.8
130
2.95
V
mV
tSCFAULT
Short-Circuit Fault Delay
VBUS < 4V
7.2
ms
Overvoltage Protection, Priority Multiplexer and Undervoltage Lockout; USB Input Connected to USBSNS Through 3.6k Resistor; WALL Input
Connected to WALLSNS Through 3.6k Resistor
VUVLO
USB Input, Wall Input
Undervoltage Lockout
Rising Threshold
Falling Threshold
Hysteresis
4.05
3.90
100
4.45
4.25
V
V
mV
VDUVLO
USB Input, Wall Input to BATSNS
Differential Undervoltage Lockout
Rising Threshold
Falling Threshold
Hysteresis
100
50
70
425
375
mV
mV
mV
VOVLO
USB Input, Wall Input Overvoltage
Protection Threshold
Rising Threshold
5.75
6.0
6.3
V
VUSBGTACTV
USBGT Output Voltage Active
USBSNS < VUSBOVLO
2 • VUSBSNS
V
VWALLGTACTV
WALLGT Output Voltage Active
WALLSNS < VWALLOVLO
2 • VWALLSNS
V
VUSBGTPROT
USBGT Output Voltage Protected
USBSNS > VUSBOVLO
0V


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