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參數(shù)資料
| 型號： | MCP1827S-1802EET |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| 中文描述： | 1.5安培的電流，低電壓，低靜態(tài)電流LDO穩(wěn)壓器 |
| 文件頁數(shù)： | 15/32頁 |
| 文件大?。?/td> | 968K |
| 代理商： | MCP1827S-1802EET |
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2006 Microchip Technology Inc.
DS22001B-page 15
MCP1827/MCP1827S
3.0
PIN DESCRIPTION
The descriptions of the pins are listed in Table 3-1.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Input Voltage Supply (V
IN
)
Connect the unregulated or regulated input voltage
source to V
IN
. If the input voltage source is located
several inches away from the LDO, or the input source
is a battery, it is recommended that an input capacitor
be used. A typical input capacitance value of 1 μF to
10 μF should be sufficient for most applications.
3.2
Shutdown Control Input (SHDN)
The SHDN input is used to turn the LDO output voltage
on and off. When the SHDN input is at a logic-high
level, the LDO output voltage is enabled. When the
SHDN input is pulled to a logic-low level, the LDO
output voltage is disabled. When the SHDN input is
pulled low, the PWRGD output also goes low and the
LDO enters a low quiescent current shutdown state
where the typical quiescent current is 0.1 μA.
3.3
Ground (GND)
Connect the GND pin of the LDO to a quiet circuit
ground. This will help the LDO power supply rejection
ratio and noise performance. The ground pin of the
LDO only conducts the quiescent current of the LDO
(typically 120 μA), so a heavy trace is not required.
For applications have switching or noisy inputs tie the
GND pin to the return of the output capacitor. Ground
planes help lower inductance and voltage spikes
caused by fast transient load currents and are
recommended for applications that are subjected to
fast load transients.
3.4
Power Good Output (PWRGD)
The PWRGD output is an open-drain output used to
indicate when the LDO output voltage is within 92%
(typically) of its nominal regulation value. The PWRGD
threshold has a typical hysteresis value of 2%. The
PWRGD output is delayed by 200 μs (typical) from the
time the LDO output is within 92% + 3% (max
hysteresis) of the regulated output value on power-up.
This delay time is internally fixed.
3.5
Output Voltage Adjust Input (ADJ)
For adjustable applications, the output voltage is
connected to the ADJ input through a resistor divider
that sets the output voltage regulation value. This
provides the user the capability to set the output
voltage to any value they desire within the 0.8V to 5.0V
range of the device.
3.6
Regulated Output Voltage (V
OUT
)
The V
OUT
pin is the regulated output voltage of the
LDO. A minimum output capacitance of 1.0 μF is
required for LDO stability. The MCP1827/MCP1827S is
stable with ceramic, tantalum and aluminum-electro-
lytic capacitors. See
Section 4.3 “Output Capacitor”
for output capacitor selection guidance.
3.7
Exposed Pad (EP)
The DDPAK and TO-220 package have an exposed tab
on the package. A heat sink may be mount to the tab to
aid in the removal of heat from the package during
operation. The exposed tab is at the ground potential of
the LDO.
3-Pin Fixed
Output
5-Pin Fixed
Output
Adjustable
Output
Name
Description
—
1
1
SHDN
Shutdown Control Input (active-low)
1
2
2
V
IN
GND
Input Voltage Supply
2
3
3
Ground
3
4
4
V
OUT
PWRGD
Regulated Output Voltage
—
5
—
Power Good Output
—
—
5
ADJ
Voltage Adjust/Sense Input
Pad
Pad
Pad
EP
Exposed Pad of the Package (ground potential)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MCP1827S-2502EAB | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1827S-2502EAT | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1827S-2502EEB | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1827S-2502EET | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
| MCP1827S-3002EAB | 1.5A, Low Voltage, Low Quiescent Current LDO Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1827S-2502E/AB | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 |
| MCP1827S-2502E/EB | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 |
| MCP1827S-3002E/AB | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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 |
| MCP1827S-3002E/AB | 制造商:Microchip Technology Inc 功能描述:; LEADED PROCESS COMPATIBLE:YES; PEAK RE 制造商:Microchip Technology Inc 功能描述:IC, LDO VOLT REG, 3V, 1.5A, TO-220-3 |
| MCP1827S-3002E/EB | 功能描述:低壓差穩(wěn)壓器 - LDO LDO 1.5A CMOS 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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