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參數(shù)資料
| 型號： | MCP1702 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 250 mA Low Quiescent Current LDO Regulator |
| 中文描述： | 250毫安低靜態(tài)電流LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 12/26頁 |
| 文件大?。?/td> | 689K |
| 代理商： | MCP1702 |
MCP1702
DS22008B-page 12
2007 Microchip Technology Inc.
5.0
FUNCTIONAL DESCRIPTION
The MCP1702 CMOS LDO linear regulator is intended
for applications that need the lowest current consump-
tion while maintaining output voltage regulation. The
operating continuous load range of the MCP1702 is
from 0 mA to 250 mA (V
R
≥
2.5V). The input operating
voltage range is from 2.7V to 13.2V, making it capable
of operating from two or more alkaline cells or single
and multiple Li-Ion cell batteries.
5.1
Input
The input of the MCP1702 is connected to the source
of the P-Channel PMOS pass transistor. As with all
LDO circuits, a relatively low source impedance (10
Ω
)
is needed to prevent the input impedance from causing
the LDO to become unstable. The size and type of the
capacitor needed depends heavily on the input source
type (battery, power supply) and the output current
range of the application. For most applications (up to
100 mA), a 1 μF ceramic capacitor will be sufficient to
ensure circuit stability. Larger values can be used to
improve circuit AC performance.
5.2
Output
The maximum rated continuous output current for the
MCP1702 is 250 mA (V
R
≥
2.5V). For applications
where V
R
< 2.5V, the maximum output current is
200 mA.
A minimum output capacitance of 1.0 μF is required for
small signal stability in applications that have up to
250 mA output current capability. The capacitor type
can be ceramic, tantalum or aluminum electrolytic. The
esr range on the output capacitor can range from 0
Ω
to
2.0
Ω
.
5.3
Output Rise time
When powering up the internal reference output, the
typical output rise time of 500 μs is controlled to
prevent overshoot of the output voltage. There is also
a startup delay time that ranges from 300 μs to 800 μs
based on loading. The startup time is separate from
and precedes the Output Rise Time. The total output
delay is the Startup Delay plus the Output Rise time.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1702-1202E/CB | 制造商:Microchip Technology Inc 功能描述: |
| MCP1702-1202E/TO | 功能描述:低壓差穩(wěn)壓器 - LDO Low Iq 250mA LDO Vin 13.2V max Vout=1.2V 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1702-1502E/TO | 功能描述:低壓差穩(wěn)壓器 - LDO Low Iq 250mA LDO Vin 13.2V max Vout=1.5V 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1702-1802E/TO | 功能描述:低壓差穩(wěn)壓器 - LDO LDO w/ Low Quiescent 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| MCP1702-2502E/TO | 功能描述:低壓差穩(wěn)壓器 - LDO LDO w/ Low Quiescent 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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