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| 型号： | MIC2560-0YWM |
| 厂商： | Micrel Inc |
| 文件页数： | 7/8页 |
| 文件大小： | 0K |
| 描述： | IC PCMCIA CARD SW MATRIX 16-SOIC |
| 标准包装： | 47 |
| 类型： | PCMCIA/Cardbus 开关 |
| 输出数： | 2 |
| Rds（开）： | 1 欧姆 |
| 内部开关： | 是 |
| 电流限制： | 200mA |
| 输入电压： | 3.3V，5V，12V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC |
| 包装： | 管件 |
| 产品目录页面： | 1111 (CN2011-ZH PDF) |
| 其它名称： | 576-2183 MIC2560-0YWM-ND |
Micrel, Inc.
compatible with and desires a different V CC level, the
controller commands this change by disabling V CC ,
waiting at least 100ms, and then re-enabling the other
V CC voltage.
If no card is inserted or the system is in sleep mode, the
controller outputs a (V CC3 IN , V CC5 IN ) = (0,0) to the
MIC2560, which shuts down V CC . This also places the
switch into a high impedance output shutdown (sleep)
mode, where current consumption drops to nearly zero,
with only tiny CMOS leakage currents flowing.
During Flash memory programming with standard
(+12V) Flash memories, the PCMCIA controller outputs
a (1,0) to the EN0, EN1 control pins of the MIC2560,
which connects V PP IN to V PP OUT . The low ON resistance
of the MIC2560 switches allow using small bypass
capacitors (in some cases, none at all) on the V CC OUT
and V PP OUT pins, with the main filtering action performed
by a large filter capacitor on the input supply voltage to
V PP IN (usually the main power supply filter capacitor is
sufficient). The V PP OUT transition from V CC to 12.0V
typically takes 250μs. After programming is completed,
the controller outputs a (EN1, EN0) = (0,1) to the
MIC2560, which then reduces V PP OUT to the V CC level for
read verification. Break-before-make switching action
reduces switching transients and lowers maximum
current spikes through the switch from the output
capacitor. The flag comparator prevents having high
voltage on the V PP OUT capacitor from contaminating the
V CC inputs, by disabling the low voltage V PP switches
until V PP OUT drops below the V CC level selected. The
lockout delay time varies with the load current and the
capacitor on V PP OUT . With a 0.1μF capacitor and nominal
I PP OUT , the delay is approximately 250μs.
Internal drive and bias voltage is derived from V PP IN .
Internal device control logic is powered from V CC3 IN .
Input logic threshold voltages are compatible with
common PCMCIA controllers using either 3.3V or 5V
supplies. No pull-up resistors are required at the control
inputs of the MIC2560.
Output Current and Protection
MIC2560 output switches are capable of more current
than needed in PC Card applications (1A) and meet or
exceed all PCMCIA specifications. For system and card
protection, output currents are internally limited. For full
system protection, long term (millisecond or longer)
output short circuits invoke overtemperature shutdown,
protecting the MIC2560, the system power supplies, the
card socket pins, and the memory card. Overtemp-
erature shutdown typically occurs at a die temperature of
115°C.
Single V CC Operation
For PC Card slots requiring only a single V CC , connect
V CC3 IN and V CC5 IN together and to the system V CC supply
(i.e., Pins 1, 3, and 15 are all connected to system V CC ).
MIC2560
Either the V CC5 switch or the V CC3 switch may be used to
enable the card slot V CC ; generally the V CC3 switch is
preferred because of its lower ON resistance.
Suspend Mode
An additional feature in the MIC2560 is a pseudo power-
down mode, Suspend Mode, which allows operation
without a V PP IN supply. In Suspend Mode, the MIC2560
supplies 3.3V to V CC OUT whenever a V CC output of 3.3V
is enabled by the PCMCIA controller. This mode allows
the system designer the ability to turn OFF the V PP
supply generator to save power when it is not specifically
required. The PCMCIA card receives V CC at reduced
capacity during Suspend Mode, as the switch resistance
rises to approximately 4.5 ? .
Figure 5. Circuit for Generating Bias Drive for the V CC
Switches when +12V is Not Readily Available.
High Current V CC Operation Without a +12V Supply
Figure 5 shows the MIC2560 with V CC switch bias
provided by a simple charge pump. This enables the
system designer to achieve full V CC performance without
a +12V supply, which is often helpful in battery powered
systems that only provide +12V when it is needed.
These on-demand +12V supplies generally have a
quiescent current draw of a few milli-amperes, which is
far more than the microamperes used by the MIC2560.
The charge pump of figure 5 provides this low current,
using about 100μA when enabled. When V PP OUT =12V is
selected, however, the on-demand V PP generator must
be used, as this charge pump cannot deliver the current
required for Flash memory programming. The Schottky
diode may not be necessary, depending on the
configuration of the on-demand +12V generator and
whether any other loads are on this line.
September 2006
7
M9999-092106
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相关代理商/技术参数 |
参数描述 |
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| MIC2560-0YWM TR | 功能描述:电源开关 IC - 配电 PCMCIA Card Sw. Matrix - Lead Free RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MIC25601BWM | 制造商:MICREL 功能描述:* 制造商:Micrel Inc 功能描述: |
| MIC2560-1BWM | 功能描述:电源开关 IC - 配电 PCMCIA Card Sw. Matrix RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MIC2560-1BWM TR | 功能描述:电源开关 IC - 配电 PCMCIA Card Sw. Matrix RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
| MIC2560-1YWM | 功能描述:电源开关 IC - 配电 PCMCIA Card Sw. Matrix - Lead Free RoHS:否 制造商:Exar 输出端数量:1 开启电阻（最大值）:85 mOhms 开启时间（最大值）:400 us 关闭时间（最大值）:20 us 工作电源电压:3.2 V to 6.5 V 电源电流（最大值）: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOT-23-5 |
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