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參數(shù)資料
| 型號： | MCP1701 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 2uA Low Dropoout Positive Voltage Refulator |
| 中文描述： | 五成低Dropoout正電壓Refulator |
| 文件頁數(shù)： | 10/20頁 |
| 文件大?。?/td> | 385K |
| 代理商： | MCP1701 |
MCP1701
DS21874A-page 10
2004 Microchip Technology Inc.
4.0
DETAILED DESCRIPTION
The MCP1701 is a low quiescent current, precision,
fixed-output voltage LDO. Unlike bipolar regulators,
the MCP1701 supply current does not increase
proportionally with load current.
4.1
Output Capacitor
A minimum of 1 μF output capacitor is required. The
output capacitor should have an effective series
resistance (esr) greater than 0.1
and less than 5
,
plus a resonant frequency above 1 MHz. Larger output
capacitors can be used to improve supply noise
rejection and transient response. Care should be taken
when increasing C
OUT
to ensure that the input
impedance is not high enough to cause high input
impedance oscillation.
4.2
Input Capacitor
A 1 μF input capacitor is recommended for most
applications when the input impedance is on the order
of 10
. Larger input capacitance may be required for
stability when operating from a battery input, or if there
is a large distance from the input source to the LDO.
When large values of output capacitance are used, the
input capacitance should be increased to prevent high
source impedance oscillations.
4.3
Overcurrent
The MCP1701 internal circuitry monitors the amount of
current flowing through the P-channel pass transistor.
In the event of a short-circuit or excessive output
current, the MCP1701 will act to limit the output current.
FIGURE 4-1:
MCP1701 Block Diagram.
V
IN
V
OUT
GND
Short-Circuit
Protection
Voltage
Reference
+
–
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| MCP1701-1802I/TO | 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1701-2502I/TO | 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1701-3002I/TO | 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1701-3302I/TO | 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1701-5002I/TO | 功能描述:低壓差穩(wěn)壓器 - LDO 250mA Adj LDO 2% RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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