LTC4155 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC4155
Linear Technology
'LTC4155' PDF : 52 Pages View PDF
LTC4155
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
hCLPROG2
(Note 4)
VCLPROG1
Ratio of Measured VBUS Current to
CLPROG2 Sense Current
CLPROG1 Servo Voltage in
Current Limit
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
CLPROG1 IVBUS Mode
19
79
466
557
657
758
839
990
1222
1494
1746
1999
2175
2477
2730
2956
1.2
VCLPROG2
fOSC
RPMOS
RNMOS
RCHG
CLPROG2 Servo Voltage in
Current Limit
Switching Frequency
High Side Switch On Resistance
Low Side Switch On Resistance
Battery Charger Current Sense
Resistance
2.5mA IVBUS Mode (USB Suspend)
100mA – 3A IVBUS Modes
103
1.2
2.05 2.25 2.50
0.090
0.080
0.040
IPEAK
Peak Inductor Current Clamp
500mA – 3A IVBUS Modes
6.7
Step-Up Mode PowerPath Switching Regulator (USB On-The-Go)
VBUS
VOUT
IVBUSOTG
IVOUTOTGQ
VCLPROG2
VBATSNSUVLO
Output Voltage
Input Voltage
0mA ≤ IVBUS ≤ 500mA
Output Current Limit
VOUT Quiescent Current
IVBUS = 0mA
Output Current Limit Servo Voltage
VBATSNS Undervoltage Lockout
VBATSNS Falling
Hysteresis
4.75
5.25
2.9
1.4
1.96
1.2
2.65
2.8
2.95
130
tSCFAULT
Short-Circuit Fault Delay
VBUS < 4V
7.2
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
4.45
3.90
4.25
100
VDUVLO
USB Input, Wall Input to BATSNS Rising Threshold
Differential Undervoltage Lockout Falling Threshold
Hysteresis
100
425
50
375
70
VOVLO
USB Input, Wall Input Overvoltage Rising Threshold
Protection Threshold
5.75
6.0
6.3
VUSBGTACTV
VWALLGTACTV
VUSBGTPROT
USBGT Output Voltage Active
WALLGT Output Voltage Active
USBGT Output Voltage Protected
USBSNS < VUSBOVLO
WALLSNS < VWALLOVLO
USBSNS > VUSBOVLO
2 • VUSBSNS
2 • VWALLSNS
0
UNITS
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
V
mV
V
MHz
Ω
Ω
Ω
A
V
V
A
mA
V
V
mV
ms
V
V
mV
mV
mV
mV
V
V
V
V
4155fc
6
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