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參數(shù)資料
| 型號： | MCP1612 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | Single 1A, 1.4 MHz Synchronous Buck Regulator |
| 中文描述： | 單1A條，1.4 MHz的同步降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 9/22頁 |
| 文件大?。?/td> | 230K |
| 代理商： | MCP1612 |
2005 Microchip Technology Inc.
DS21921B-page 9
MCP1612
3.0
MCP1612 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Input Voltage Pin (V
IN
)
Connect the input voltage source to V
IN
. For normal
operation, the voltage on V
IN
should be between +2.7V
and +5.5V. A 10 μF bypass capacitor should be
connected between V
IN
and P
GND
.
3.2
Analog Input Voltage Pin (V
CC
)
V
CC
provides bias for internal analog functions. This
voltage is derived by filtering the V
IN
supply.
3.3
Shutdown Input Pin (SHDN)
Connect SHDN to a logic-level input in order to turn the
regulator on or off. A logic-high (>45% of V
IN
) will
enable the regulator. A logic-low (<15% of V
IN
) will
force the regulator into Shutdown mode. When in
shutdown, both the P-channel and N-channel switches
are turned off.
3.4
Compensation Pin (COMP)
COMP is the internal transconductance amplifier
output pin. External compensation is connected to
COMP for control-loop stabilization.
3.5
Feedback Pin (FB)
Connect the output voltage of the buck converter
through an external resistor divider to FB to regulate
the output voltage. The nominal voltage compared to
this input for pulse termination is 0.8V.
3.6
Analog Ground Pin (A
GND
)
Tie all small-signal ground returns to A
GND
. Noise on
A
GND
can effect the sensitive internal analog
measurements.
3.7
Power Ground Pin (P
GND
)
Connect all large-signal ground returns to P
GND
. These
large-signal traces should have a small loop area and
length to prevent coupling of switching noise to
sensitive traces.
3.8
Buck Inductor Output Pin (L
X
)
Connect L
X
directly to the buck inductor. This pin
carries large signal-level currents; all connections
should be made as short as possible.
Pin No.
Name
Function
1
2
3
4
5
6
7
8
V
IN
V
CC
SHDN
COMP
FB
A
GND
P
GND
L
X
Input Voltage Pin
Analog Input Voltage Pin
Shutdown Control Input Pin
Transconductance Amplifier Output Pin
Feedback Input Pin
Analog Ground Pin
Power Ground Pin
Buck Inductor Output Pin
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| MCP1612_13 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:Single 1A, 1.4 MHz Synchronous Buck Regulator |
| MCP1612-120I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-150I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-180I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| MCP1612-250I/MS | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 1.4MHz 1A Synch-Buck RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
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