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参数资料
| 型号： | DS2154L |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Digital Transmission Controller |
| 英文描述： | DATACOM, FRAMER, PQFP100 |
| 封装： | 14 X 14 MM, 1.40 MM HEIGHT, LQFP-100 |
| 文件页数： | 2/11页 |
| 文件大小： | 1257K |
| 代理商： | DS2154L |
10
Maxim Integrated
250mA to 2.5A Adjustable Current-Limit Switches
MAX14575A/MAX14575AL/
MAX14575B/MAX14575C
IN Bypass Capacitor
Connect a minimum 1FF capacitor from IN to GND to
limit the input-voltage drop during momentary output
short-circuit conditions. If the power supply cannot
support the required short-circuit current, then a larger
capacitor should be used to maintain the input voltage
above 2.3V.
If the supply is not strong enough and the user does not
want to use a larger capacitor at the input, then the fol-
lowing circuitry can be used (Figure 4.)
OUT Bypass Capacitor
For stable operation over the full temperature range and
over the full programmable current-limit range, use a 1FF
ceramic capacitor from OUT to ground.
Excessive output capacitance can cause a false over-
current condition due to decreased dV/dt across the
capacitor. Use the following formula to calculate the
maximum capacitive load (CMAX) on OUT:
×
= LIM
BLANK(MIN)
MAX
IN
I
(mA) t
(ms)
C
( F)
V (V)
For example, for VIN = 5.0V, tBLANK = 10ms, and ILIM =
1000mA, CMAX equals 2000FF.
Layout and Thermal Dissipation
To optimize the switch response time to output short-
circuit conditions, it is very important to keep all traces
as short as possible to reduce the effect of undesirable
parasitic inductance. Place input and output capacitors
as close as possible to the device (should be no more
than 5mm). IN and OUT must be connected with wide
short traces to the power bus. During normal operation,
the power dissipation is small and the package tem-
perature change is minimal. If the output is continuously
shorted to ground at the maximum supply voltage, the
operation of the switches with the autoretry option does
not cause problems because the total power dissipated
during the short is scaled by the duty cycle:
××
=
+
IN(MAX)
OUT(MAX)
BLANK
(MAX)
RETRY
BLANK
VI
t
P
tt
Attention must be given to the MAX14575C continuous
current-limit version when the power dissipation during
a fault condition causes the device to reach the thermal-
shutdown threshold.
Chip Information
PROCESS: BiCMOS
Figure 4. Optional Protection for Weak Supply
RSETI
EN(EN)
IN
OUT
FLAG
GND
SETI
EP
~100I*
1F
PARENTHESES FOR THE MAX14575AL ONLY
*IF VIN > 3V, A DIODE CAN BE USED IN PLACE OF THE RESISTOR.
LOAD
MAX14575A
MAX14575AL
MAX14575B
MAX14575C
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maximintegrated.com/packages. Note
that a “+”, “#”, or “-” in the package code indicates RoHS status
only. Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
8 TDFN-EP
T822+2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2154L+ | 功能描述:网络控制器与处理器 IC Enhanced E1 Transceiver RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2154LA2 | 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2154LA2+ | 功能描述:网络控制器与处理器 IC Enhanced E1 Transceiver RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| DS2154L-C01 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS2154LD1 | 功能描述:网络控制器与处理器 IC Enhanced E1 Transceiver RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
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