- 您现在的位置：买卖IC网 > PDF目录39425 > LTC4160EUDC#PBF (LINEAR TECHNOLOGY CORP) POWER SUPPLY MANAGEMENT CKT, PQCC20 PDF资料下载
参数资料
| 型号： | LTC4160EUDC#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | POWER SUPPLY MANAGEMENT CKT, PQCC20 |
| 封装： | 3 X 4 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-20 |
| 文件页数： | 6/32页 |
| 文件大小： | 422K |
| 代理商： | LTC4160EUDC#PBF |
第1页第2页第3页第4页第5页当前第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
LTC4160/LTC4160-1
14
41601f
OPERATION
the programmed limit, CLPROG reaches 1.18V and power
delivered by the switching regulator is held constant.
The input current limit is programmed by the ILIM0 and
ILIM1 pins. The input current limit has four possible set-
tings ranging from the USB suspend limit of 500μA up
to 1A for wall adapter applications. Two of these settings
are specifically intended for use in the 100mA and 500mA
USB application. Refer to Table 1 for current limit settings
using ILIM0 and ILIM1.
Table 1. USB Current Limit Settings Using ILIM0 and ILIM1
ILIM1
ILIM0
USB SETTING
0
1x Mode (USB 100mA Limit)
0
1
10x Mode (Wall 1A Limit)
1
0
Low Power Suspend (USB 500μA Limit)
1
5x Mode (USB 500mA Limit)
When the switching regulator is activated, the average
input current will be limited by the CLPROG programming
resistor according to the following expression:
II
V
R
h
VBUS
VBUSQ
CLPROG
=+
+
()
1
where IVBUSQ is the quiescent current of the LTC4160/
LTC4160-1, VCLPROG is the CLPROG servo voltage in
current limit, RCLPROG is the value of the programming
resistor and hCLPROG is the ratio of the measured cur-
rent at VBUS to the sample current delivered to CLPROG.
Refer to the Electrical Characteristics table for values of
hCLPROG, VCLPROG and IVBUSQ. Given worst-case circuit
tolerances, the USB specification for the average input
current in 100mA or 500mA mode will not be violated,
provided that RCLPROG is 3.01k or greater.
While not in current limit, the switching regulator’s
Bat-Track feature will set VOUT to approximately 300mV
above the voltage at BAT. However, if the voltage at BAT
is below 3.3V, and the load requirement does not cause
the switching regulator to exceed its current limit, VOUT
will regulate at a fixed 3.6V, as shown in Figure 2. This
instant-on operation will allow a portable product to run
immediately when power is applied without waiting for the
battery to charge. If the load does exceed the current limit
at VBUS, VOUT will range between the no-load voltage and
slightly below the battery voltage, indicated by the shaded
region of Figure 2.
Figure 1. Power Path Block Diagram – Power Available from USB/Wall Adapter
+
–
+
–
0.3V
1.18V
3.6V
CLPROG
ISWITCH/N
+ –
+–
15mV
OmV
IDEAL
DIODE
PWM AND
GATE DRIVE
AVERAGE VBUS INPUT
CURRENT LIMIT
CONTROLLER
VBUS
VOLTAGE
CONTROLLER
VOUT VOLTAGE
CONTROLLER
+
–
5V
IDGATE
10
VOUT
12
SW
3.5V TO
(BAT + 0.3V)
TO SYSTEM LOAD
SINGLE CELL
Li-Ion
41601 F01
14
BAT
USB INPUT
BATTERY POWER
11
TO USB
OR WALL
ADAPTER
+
VBUS
+
–
6V
OVERVOLTAGE PROTECTION
×2
+
–
+ –
1V
BATTERY CHARGER
IBAT/1000
+
–
VFLOAT
+
–
PROG
8
17
13
2
OVSENS
1
OVGATE
相关PDF资料 |
PDF描述 |
|---|---|
| LTC4266IUHF#TRPBF | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| LTC4266CUHF#PBF | POWER SUPPLY MANAGEMENT CKT, PQCC38 |
| LTC500-4MM | LOW PASS FILTER |
| LTC6603CUF#PBF | LOW PASS FILTER |
| LTC6603CUF#TRPBF | LOW PASS FILTER |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC4210 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Supply Hot Swap Controller for Advanced Mezzanine Card |
| LTC4210-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Hot Swap Controller in 6-Lead SOT-23 Package |
| LTC42101CS6 | 制造商:Linear Technology 功能描述: |
| LTC4210-1CS6 | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 |
| LTC4210-1CS6#PBF | 制造商:Linear Technology 功能描述:Hot Swap Controller 1-CH 16.5V 6-Pin TSOT-23 制造商:Linear Technology 功能描述:IC HOT SWAP CONT 制造商:Linear Technology 功能描述:HOT SWAP CNTRL 16.5VIN 6SOT23 制造商:Linear Technology 功能描述:HOT SWAP, CNTRL, 16.5VIN, 6SOT23 制造商:Linear Technology 功能描述:IC, HOT SWAP CONT; Controller Applications:Hot Board Insertion, Electronic Circuit Breaker, Industrial High Side Switch; Input Voltage:16.5V; Internal Switch:Yes; Supply Voltage Min:2.7V; Supply Voltage Max:16.5V; No. of Pins:6 ;RoHS Compliant: Yes |
发布紧急采购，3分钟左右您将得到回复。