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参数资料
| 型号： | MIC2558BM |
| 厂商： | MICREL INC |
| 元件分类： | 电源管理 |
| 英文描述： | PCMCIA Dual Card Socket VPP Switching Matrix |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO14 |
| 封装： | SOIC-14 |
| 文件页数： | 6/8页 |
| 文件大小： | 56K |
| 代理商： | MIC2558BM |
MIC2558
Micrel
MIC2558
6
1997
action performed by a large filter capacitor on VPP IN. The
VPP OUT transition from VCC to 12.0V typically takes 25S.
After programming is completed, the controller outputs a
(0,1) to the MIC2558, which then reduces VPP OUT to the
VCC level. Break-before-make switching action reduces
switching transients and lowers maximum current spikes
through the switch from the output capacitor.
If no card is inserted, or the system is in sleep mode, the
controller outputs either a (0,0) or a (1,1) to the MIC2558.
Either input places the switch into shutdown mode, where
current consumption drops even further.
The HiZ/Low input controls the optional logic low output
clamp. With HiZ/Low in the high state and EN0 = EN1 = 0,
VPP OUT enters a high impedance (open) state. With HiZ/
Low in the low state and EN0 = EN1 = 0, VPP OUT is clamped
to ground, providing a logic low signal. The clamp does not
require any DC bias current for operation.
Figure 3. Full PCMCIA Implementation of V
PP and VCC switching using MIC2558 and MIC2951 voltage regulator.
VPP OUT 1
0.1F
EN01
EN11
1F
+12V
VPP IN
+5V
Hi-Z/ Low 1 Control
VDD
EN02
EN12
Hi-Z/ Low 2 Control
VPP OUT 2
0.1F
MIC2558
7
6
5
4
3
2
8
9
10
11
12
13
14
0.1F
MIC2951
SD
V
GND
4
7
8
OUT
+VIN
FB
1
3
SHUTDOWN
INPUT
100pF
2N2222
1%
300k
VIN = +5.3V to +15V
1%
180k
+
3.3F
470 k
OFF
ON
220k
1%
TTL Logic Level
High (V > 1.5V) VCC = 5.0V
Low (V < 0.5V) VCC = 3.3V
VCC Switching and Control Block
MOSFET drive and bias voltage is derived from VPP IN.
Internal device control logic is powered from VDD, which
should be connected to the same supply voltage as the
PCMCIA controller (normally either 3.3V or 5V).
Output Current
MIC2558 output switches are capable of far more current
than usually needed in PCMCIA applications. PCMCIA VPP
output current is limited primarily by switch resistance voltage
drop (I x R) and the requirement that VPP OUT cannot drop
more than 5% below nominal. VPP OUT will survive output
short circuits to ground if VPP IN or VCC are current limited by
the regulator that supplies these voltages.
相关PDF资料 |
PDF描述 |
|---|---|
| MIC2810-1.2/1.8/2.6YML | 1-CHANNEL POWER SUPPLY SUPPORT CKT, QCC16 |
| MIC29153BT | High-Current Low-Dropout Regulators |
| MIC29153BU | High-Current Low-Dropout Regulators |
| MIC29301-12BT | High-Current Low-Dropout Regulators |
| MIC29301-12BU | High-Current Low-Dropout Regulators |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC2560-0BWM | 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 |
| MIC2560-0BWM 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 |
| MIC2560-0YWM | 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 |
| 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: |
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