參數(shù)資料
型號(hào): LTC4155IUFD#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: POWER SUPPLY SUPPORT CKT, PQCC28
封裝: 5 X 4 MM, 0.75 MM HEIGHT, PLASTIC, MO-220WXXX-X, QFN-28
文件頁(yè)數(shù): 49/52頁(yè)
文件大?。?/td> 473K
代理商: LTC4155IUFD#TRPBF
LTC4155
6
4155f
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating
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
16
76
388
473
554
633
708
821
1042
1250
1458
1667
1875
2083
2292
2500
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
680
mA
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
mV
VDUVLO
USB Input, Wall Input to BATSNS
Differential Undervoltage Lockout
Rising Threshold
Falling Threshold
Hystersis
100
50
70
425
375
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
0
V
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