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參數(shù)資料
| 型號： | MCP1252 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Low Noise, Positive-Regulated Charge Pump |
| 中文描述： | 低噪聲，正調(diào)節(jié)電荷泵 |
| 文件頁數(shù)： | 8/18頁 |
| 文件大?。?/td> | 440K |
| 代理商： | MCP1252 |
MCP1252/3
DS21752A-page 8
2002 Microchip Technology Inc.
3.0
PIN FUNCTIONS
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Open-Drain Power Good Output
(PGOOD)
PGOOD is a high-impedance when the output voltage
is in regulation. A logic-low is asserted when the output
falls 7% (typical) below the nominal value. The PGOOD
output remains low until V
OUT
is within 3% (typical) of
its nominal value. On start-up, this pin indicates when
the output voltage reaches its final value. PGOOD is
high-impedance when SHDN is low.
3.2
Regulated Output Voltage (V
OUT
)
Bypass to GND with a filter capacitor.
3.3
Power Supply Input (V
IN
)
It is recommended that V
IN
be tied to a ceramic bypass
capacitor.
3.4
Ground (GND)
It is recommended that the ground pin be tied to a
ground plane for best performance.
3.5
Flying Capacitor Negative
Terminal (C-)
The charge pump capacitor (flying capacitor) is used to
transfer charge from the input supply to the regulated
output.
It is recommended that a low ESR (equivalent series
resistance) capacitor be used.
3.6
Flying Capacitor Positive Terminal
(C+)
The charge pump capacitor (flying capacitor) is used to
transfer charge from the input supply to the regulated
output.
Proper orientation is imperative when using a polarized
capacitor.
3.7
Shutdown Input (SHDN)
A logic-low signal applied to SHDN disables the device.
A logic-high signal applied to this pin allows normal
operation.
3.8
Select (SELECT) Input or
Feedback (FB) Input
MCP1252-33X50, MCP1253-33X50:
SELECT
: Select Input Pin.
Connect SELECT to V
IN
for 3.3V fixed output. Connect
SELECT to GND for a 5.0V fixed output.
MCP1252-ADJ, MCP1253-ADJ:
FB
: Feedback Pin.
A resistor divider connected to this pin determines the
adjustable V
OUT
value (1.5V to 5.5V).
Pin
No.
Name
Function
1
2
3
4
5
6
7
8
PGOOD
Open-Drain Power GOOD Output
V
OUT
Regulated Output Voltage
V
IN
Power Supply Input
GND
Ground Terminal
C-
Flying Capacitor Negative Terminal
C+
Flying Capacitor Positive Terminal
SHDN
Shutdown Mode, Active-Low Input
SELECT
Output Voltage Select Pin.
(MCP1252-33X50, MCP1253-33X50)
FB
Feedback Input Pin for Adjustable Output
(MCP1252-ADJ, MCP1253-ADJ)
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1252_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Low Noise, Positive-Regulated Charge Pump |
| MCP1252-33X50I/MS | 功能描述:電荷泵 120mA Regulated RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MCP1252-33X50I/MS | 制造商:Microchip Technology Inc 功能描述:DC/DC Charge Pump Converter (DC-DC) IC |
| MCP1252-ADJI/MS | 功能描述:電荷泵 120mA Regulated Adj RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MCP1252DM-BKLT | 功能描述:電源管理IC開發(fā)工具 MCP1252 Charge Pump Backlight Demo Brd RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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