- 您现在的位置：买卖IC网 > PDF目录11161 > MAX1694EUB+ (Maxim Integrated Products)IC USB SWITCH 1X1 10UMAX PDF资料下载
参数资料
| 型号： | MAX1694EUB+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/9页 |
| 文件大小： | 0K |
| 描述： | IC USB SWITCH 1X1 10UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 功能： | USB 开关 |
| 电路： | 1 x 1:1 |
| 导通状态电阻： | 90 毫欧 |
| 电压电源： | 单电源 |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 5.5 V |
| 电流 - 电源： | 25µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 管件 |
MAX1693/(MAX1693H)/MAX1694
USB Current-Limited Switches
with Fault Blanking
8 ________________________________________________________________________________________
Fault Blanking
The MAX1693/(MAX1693H)/MAX1694 feature 10ms
fault blanking. Fault blanking allows current-limit faults,
including momentary short-circuit faults that occur
when hot-swapping a capacitive load, and also ensures
that no fault is issued during power-up. When a load
transient causes the device to enter current limit, an
internal counter starts. If the load fault persists beyond
the 10ms fault-blanking timeout, the FAULT output
asserts low. Ensure that the MAX1693/(MAX1693H)/
MAX1694’s input is adequately bypassed to prevent
input glitches from triggering spurious FAULT outputs.
Input voltage glitches less than 150mV will not cause a
spurious FAULT output. Load-transient faults less than
10ms (typ) will not cause a FAULT output assertion.
Only current-limit faults are blanked. Die overtempera-
ture faults and input voltage droops below the UVLO
threshold will cause an immediate fault output.
Fault Latching (MAX1694 Only)
The MAX1694 features a latched FAULT output.
Whenever the FAULT output is activated, it latches the
FAULT output low and also turns the switch off. To clear
the latch, either cycle the ON input or cycle the input
voltage below UVLO.
Applications Information
Input Capacitor
To limit the input voltage drop during momentary output
short-circuit conditions, connect a capacitor from IN to
GND. A 1F ceramic capacitor will be adequate for most
applications; however, higher capacitor values will fur-
ther reduce the voltage drop at the input (see Figure 2).
Output Capacitor
Connect a 0.1F capacitor from OUT to GND. This cap-
acitor helps prevent inductive parasitics from pulling
OUT negative during turn-off.
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 to the device as possible (no more than 5mm).
All IN and all OUT pins must be connected with short
traces to the power bus. Wide power bus planes will
provide superior heat dissipation through the switch IN
and OUT pins. Figure 3 shows suggested pin connec-
tions for a single-layer board.
Under normal operating conditions, the package can
dissipate and channel heat away. Calculate the maxi-
mum power dissipation as follows:
P = (ILIMIT)2 RON
where ILIMIT is the preset current limit (1.0A max) and
RON is the on-resistance of the switch (125m
max).
When the output is short-circuited, foldback-current lim-
iting activates and the voltage drop across the switch
equals the input supply. The power dissipated across
the switch increases, as does the die temperature. If the
fault condition is not removed, the thermal-overload-pro-
tection circuitry activates (see the Thermal Shutdown
section). Wide power-bus planes connected to IN and
OUT and a ground plane in contact with the device will
help dissipate additional heat.
1
2
3
4
5
10
9
8
7
6
OUT
IN
OUT
FAULT
OUT
IN
OUT
IN
MAX1693
(MAX1693H)
MAX1694
GND
ON (ON)
Figure 3. IN and OUT Cross Connections for a Single-Layer
Board
Figure 2. Typical Application Circuit
Chip Information
TRANSISTOR COUNT: 715
MAX1693
(MAX1693H)
MAX1694
IN
OUTPUT
OUT
INPUT
2.7V TO 5.5V
FAULT
ON (ON)
ON
(OFF)
(ON)
OFF
100k
1
F
0.1
F*
*USB SPECIFICATIONS REQUIRE A LARGER CAPACITOR
GND
相关PDF资料 |
PDF描述 |
|---|---|
| VE-BNN-CU-B1 | CONVERTER MOD DC/DC 18.5V 200W |
| VE-BNM-CU-B1 | CONVERTER MOD DC/DC 10V 200W |
| VE-BNL-CU-B1 | CONVERTER MOD DC/DC 28V 200W |
| MAX1693HEUB+ | IC USB SWITCH 1X1 10UMAX |
| VE-B6N-IW-F4 | CONVERTER MOD DC/DC 18.5V 100W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1694EUB+ | 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1694EUB+T | 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1694EUB-T | 功能描述:电源开关 IC - USB USB Current-Limited Switch w/Fault Blank RoHS:否 制造商:Micrel 电源电压-最小:2.7 V 电源电压-最大:5.5 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:SOIC-8 封装:Tube |
| MAX1694EUB-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX16950AAUE/V+ | 功能描述:DC/DC 开关控制器 2MHz Step-Down Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
发布紧急采购，3分钟左右您将得到回复。