您的位置：维库电子市场网 > Datasheet > MAX6499

MAX6499 Datasheet

  • MAX6499

  • 72V、过压保护开关/限幅控制器, 外置MOSFET

  • 688.39KB

  • 16页

  • MAXIM

阅览下载 纠错 0

扫码查看芯片数据手册

上传产品规格书

PDF预览

72V, Overvoltage-Protection Switches/Limiter
Controllers with an External MOSFET
During
鈭唗
2
, C
OUT
loses charge through the output load.
The voltage across C
OUT
(鈭哣
2
) decreases until the
MOSFET reaches its V
GS(TH)
threshold and can be
approximated using the following formula:
鈭?/div>
V
2
=
I
OUT
鈭?/div>
t
2
C
OUT
The total period of the overvoltage waveform can be
summed up as follows:
t
OV =
鈭唗
1
+
鈭唗
2
+
鈭唗
3
The MAX6495/MAX6496/MAX6499 dissipate the most
power during an overvoltage event when I
OUT
= 0. The
maximum power dissipation can be approximated
using the following equation:
P
DISS
=
V
OV
脳
0.975
脳
I
GATEPD
脳
鈭?/div>
t
1
鈭?/div>
t
OV
MAX6495鈥揗AX6499
Once the MOSFET V
GS(TH)
is obtained, the slope of the
output-voltage rise is determined by the MOSFET Q
g
charge through the internal charge pump with respect
to the drain potential. The new rise time needed to
reach a new overvoltage event can be calculated using
the following formula:
鈭?/div>
t
3
鈮?/div>
Q
GD
鈭?/div>
V
OUT
V
GS
I
GATE
where Q
GD
is the gate-to-drain charge.
The die-temperature increase is related to
胃
JC
(8.3掳C/W
and 8.5掳C/W for the MAX6495/MAX6496/MAX6499,
respectively) of the package when mounted correctly
with a strong thermal contact to the circuit board. The
MAX6495/MAX6496/MAX6499 thermal shutdown is
governed by the equation:
T
J
= T
A
+ P
DISS
x
胃
JC
< +170掳C
Typical Application Circuits
DC-DC
CONVERTER
IN
OUT
GND
GATE
OUTFB
12V
IN
OUTFB
DC-DC
CONVERTER
IN
OUT
GND
GATE
12V IN
IN
MAX6495
SHDN
OVSET
GND
SHDN
MAX6496
GATEP
GND
OVSET
Figure 5. Overvoltage Limiter (MAX6495)
Figure 6. Overvoltage Limiter with Low-Voltage-Drop Reverse-
Protection Circuit (MAX6496)
______________________________________________________________________________________
11

MAX6499相关型号PDF文件下载

  • 型号
    版本
    描述
    厂商
    下载
  • MAX600
    英文版
    AC To DC Regulator
    MAXIM
    MAX600
  • MAX600
    英文版
    AC To DC Regulator
    MAXIM [Max...
    MAX600
  • MAX601
    英文版
    AC To DC Regulator
    MAXIM
    MAX601
  • MAX601
    英文版
    AC To DC Regulator
    MAXIM [Max...
    MAX601
  • MAX602
    英文版
    AC To DC Regulator
    MAXIM
    MAX602
  • MAX602
    英文版
    AC To DC Regulator
    MAXIM [Max...
    MAX602
  • MAX603
    英文版
    5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Reg...
    MAXIM
    MAX603
  • MAX603
    英文版
    5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Reg...
    MAXIM [Max...
    MAX603
  • MAX604
    英文版
    5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Reg...
    MAXIM
    MAX604
  • MAX604
    英文版
    5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Reg...
    MAXIM [Max...
    MAX604
  • MAX606
    英文版
    Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters ...
    MAXIM
    MAX606
  • MAX606
    英文版
    Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters ...
    MAXIM [Max...
    MAX606
  • MAX607
    英文版
    Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters ...
    MAXIM
    MAX607
  • MAX607
    英文版
    Low-Profile, 5V/12V or Adjustable, Step-Up DC-DC Converters ...
    MAXIM [Max...
    MAX607
  • MAX608
    英文版
    5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller
    MAXIM
    MAX608
  • MAX608
    英文版
    5V or Adjustable, Low-Voltage, Step-Up DC-DC Controller
    MAXIM [Max...
    MAX608
  • MAX610
    英文版
    AC-to-DC Regulator (110/220VAC to 5.0VDC)
    Maixm
    MAX610
  • MAX611
    英文版
    AC-to-DC Regulator (110/220VAC to 5.0VDC)
    Maixm
    MAX611
  • MAX612
    英文版
    AC-to-DC Regulator (110/220VAC to 5.0VDC)
    Maixm
    MAX612
  • MAX613
    英文版
    Dual-Slot PCMCIA Analog Power Controllers
    MAXIM
    MAX613

您可能感兴趣的PDF文件资料

热门IC型号推荐

©2024 维库电子市场网（www.dzsc.com）　备案号：浙B2-20050339-1 经营许可证：浙B2-20210386版权声明
买家服务热线：0571-85317607 | 买家服务部QQ： QQ:1609526468
卖家服务热线：0571-85317607 | 卖家服务部QQ： QQ:331652727

扫码下载APP，
一键连接广大的电子世界。

在线人工客服

买家服务：
卖家服务：

0571-85317607

客服在线时间周一至周五
9:00-17:30

关注官方微信号，
第一时间获取资讯。

建议反馈
返回顶部

建议反馈

联系人：

联系方式：

按住滑块，拖拽到最右边
>>
感谢您向阿库提出的宝贵意见，您的参与是维库提升服务的动力！意见一经采纳，将有感恩红包奉上哦！

PDF纠错X

投诉电话：0571-85317607 投诉QQ：

如选匿名将无法为您反馈投诉结果，建议实名投诉！