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| 型号： | TC1266VUA |
| 厂商： | Microchip Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 3.3V 200MA PCI 8MSOP |
| 标准包装： | 100 |
| 应用： | 转换器，PCI 外围设备卡应用 |
| 输入电压： | 4.3 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 3.3V |
| 工作温度： | -5°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-MSOP |
| 包装： | 管件 |
| 产品目录页面： | 665 (CN2011-ZH PDF) |
TC1266
200mA PCI LDO
Features
General Description
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Glitch Free Transition Between Input Sources
Automatic Input Source Selection
External PMOS Bypass Switch Control
Built-in 5V Detector
1% Regulated Output Voltage Accuracy
200mA Load Current Capability
Kelvin Sense Input
Low Dropout Voltage (240mV @ Full Load)
Low Ground Current, Independent of Load
The TC1266 is an application-specific, low dropout
regulator (LDO), specifically intended for use in PCI
peripheral card applications complying with PCI Power
Management (PCI 2.0). It provides an uninterrupted,
3.3V, 200mA (max) output voltage when the main (5V)
or auxiliary (3.3V) input voltage supplies are present.
The TC1266 consists of an LDO, a voltage threshold
detector, external switchover logic and gate drive
circuitry. It functions as a conventional LDO as long as
the voltage on the main supply input (V IN ) is above the
lower threshold (3.90V typical). Should the voltage on
Applications
V IN fall below the lower threshold, the LDO is disabled
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PCMCIA
PCI
Network Interface Cards (NICs)
Cardbus TM Technology
and an external P-channel MOSFET is automatically
turned on, connecting the auxiliary supply input to
V OUT, and ensuring an uninterrupted 3.3V output. The
main supply is automatically selected, if both the main
and auxiliary input supplies are present, and transition
from one input supply to the other is ensured glitch-
Device Selection Table
Junction
Part Number Package
Temp. Range
TC1266VOA 8-Pin SOIC (Narrow) -5°C to +125°C
free. High integration, automatic secondary supply
switchover, Kelvin sensing, and small size make the
TC1266 the optimum LDO for PCI 2.0 applications.
Functional Block Diagram
TC1266VUA
8-Pin MSOP
-5°C to +125°C
Package Type
8-Pin SOIC
V IN
V AUX
Bandgap
Detect
D R
Reference
V IN
1
8
D R
NC
V AUX
2
3
TC1266
7
6
V OUT
SENSE
GND
–
E/A
+
V OUT
SENSE
GND
4
5
NC
8-Pin MSOP
V IN
1
8
D R
NC
V AUX
GND
2
3
4
TC1266
7
6
5
V OUT
SENSE
NC
2002 Microchip Technology Inc.
DS21377B-page 1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1266VUATR | 功能描述:低压差稳压器 - LDO 200mA PCI LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TC1267 | 功能描述:铝质电解电容器 - 带引线 225UF 250V AXIAL CAP RoHS:否 制造商:Kemet 引线类型: 电容:220 uF 容差:20 % 电压额定值:25 V 工作温度范围: 端接类型:Radial 外壳直径:8 mm 外壳长度:11 mm 引线间隔:5 mm 产品:General Purpose Electrolytic Capacitors 封装:Bulk |
| TC1267_13 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:400mA PCI LDO |
| TC1267VET | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:400mA PCI LDO |
| TC1267VETTR | 功能描述:低压差稳压器 - LDO 400mA PCI LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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