参数资料
型号: LTC4155IUFD#TRPBF
厂商: Linear Technology
文件页数: 6/52页
文件大小: 0K
描述: IC I2C POWER MANAGER DUAL 28QFN
标准包装: 2,500
系列: PowerPath™
功能: 充电管理,电源管理
电池化学: 锂离子(Li-Ion)、锂聚合物(Li-Pol)
电源电压: 4.35 V ~ 5.5 V
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 28-WFQFN 裸露焊盘
供应商设备封装: 28-QFN(4x5)
包装: 带卷 (TR)
LTC4155
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T A ≈ T J = 25°C (Note 2). V BUS = 5V, BATSNS = 3.7V, DVCC = 3.3V,
R CLPROG1 = R CLPROG2 = 1.21k, R PROG = 499Ω, unless otherwise noted.
SYMBOL
h CLPROG2
(Note 4)
PARAMETER
Ratio of Measured V BUS Current to
CLPROG2 Sense Current
CONDITIONS
2.5mA I VBUS Mode (USB Suspend)
100mA I VBUS Mode
MIN
TYP
19
79
MAX
UNITS
mA/mA
mA/mA
500mA I VBUS Mode
600mA I VBUS Mode
700mA I VBUS Mode
800mA I VBUS Mode
900mA I VBUS Mode
1.00A I VBUS Mode
1.25A I VBUS Mode
1.50A I VBUS Mode
1.75A I VBUS Mode
2.00A I VBUS Mode
2.25A I VBUS Mode
2.50A I VBUS Mode
2.75A I VBUS Mode
3.00A I VBUS Mode
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
V CLPROG1
CLPROG1 Servo Voltage in
CLPROG1 I VBUS Mode
1.2
V
Current Limit
V CLPROG2
CLPROG2 Servo Voltage in
Current Limit
2.5mA I VBUS Mode (USB Suspend)
100mA – 3A I VBUS Modes
103
1.2
mV
V
f OSC
R PMOS
R NMOS
R CHG
Switching Frequency
High Side Switch On Resistance
Low Side Switch On Resistance
Battery Charger Current Sense
2.05
2.25
0.090
0.080
0.040
2.50
MHz
Ω
Ω
Ω
Resistance
I PEAK
Peak Inductor Current Clamp
500mA – 3A I VBUS Modes
6.7
A
Step-Up Mode PowerPath Switching Regulator (USB On-The-Go)
V BUS
V OUT
I VBUSOTG
I VOUTOTGQ
V CLPROG2
Output Voltage
Input Voltage
Output Current Limit
V OUT Quiescent Current
Output Current Limit Servo Voltage
0mA ≤ I VBUS ≤ 500mA
I VBUS = 0mA
4.75
2.9
1.4
1.96
1.2
5.25
V
V
A
mA
V
V BATSNSUVLO
V BATSNS Undervoltage Lockout
V BATSNS Falling
2.65
2.8
2.95
V
Hysteresis
130
mV
t SCFAULT
Short-Circuit Fault Delay
V BUS < 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
V UVLO
USB Input, Wall Input
Undervoltage Lockout
Rising Threshold
Falling Threshold
4.05
3.90
4.45
4.25
V
V
Hysteresis
100
mV
V DUVLO
USB Input, Wall Input to BATSNS
Differential Undervoltage Lockout
Rising Threshold
Falling Threshold
100
50
425
375
mV
mV
Hysteresis
70
mV
V OVLO
USB Input, Wall Input Overvoltage
Rising Threshold
5.75
6.0
6.3
V
Protection Threshold
V USBGTACTV
V WALLGTACTV
V USBGTPROT
USBGT Output Voltage Active
WALLGT Output Voltage Active
USBGT Output Voltage Protected
USBSNS < V USBOVLO
WALLSNS < V WALLOVLO
USBSNS > V USBOVLO
2 ? V USBSNS
2 ? V WALLSNS
0
V
V
V
4155fc
6
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