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參數(shù)資料
| 型號： | MCP1802 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 300 mA, High PSRR, Low Quiescent Current LDO |
| 中文描述： | 300毫安，高PSRR，低靜態(tài)電流低壓降穩(wěn)壓器 |
| 文件頁數(shù)： | 10/24頁 |
| 文件大小： | 292K |
| 代理商： | MCP1802 |
MCP1802
DS22053A-page 10
2007 Microchip Technology Inc.
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in
Table 3-1
.
TABLE 3-1:
PIN FUNCTION TABLE
3.1
Ground Terminal (GND)
Regulator ground. Tie GND to the negative side of the
output and the negative side of the input capacitor.
Only the LDO bias current (25 μA typical) flows out of
this pin; there is no high current. The LDO output
regulation is referenced to this pin. Minimize voltage
drops between this pin and the negative side of the
load.
3.2
Regulated Output Voltage (V
OUT
)
Connect V
OUT
to the positive side of the load and the
positive terminal of the output capacitor. The positive
side of the output capacitor should be physically
located as close to the LDO V
OUT
pin as is practical.
The current flowing out of this pin is equal to the DC
load current.
3.3
Unregulated Input Voltage (V
IN
)
Connect V
IN
to the input unregulated source voltage.
Like all low dropout linear regulators, low source
impedance is necessary for the stable operation of the
LDO. The amount of capacitance required to ensure
low source impedance will depend on the proximity of
the input source capacitors or battery type. For most
applications, 0.1 μF of capacitance will ensure stable
operation of the LDO circuit. The type of capacitor
used can be ceramic, tantalum or aluminum electro-
lytic. The low ESR characteristics of the ceramic will
yield better noise and PSRR performance at high-
frequency.
3.4
Shutdown 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 and the LDO enters a low
quiescent current shutdown state where the typical qui-
escent current is 0.01 μA. The SHDN pin does not
have an internal pullup or pulldown resistor. The the
SHDN pin must be connected to either V
IN
or GND to
prevent the device from becoming unstable.
Pin No.
SOT-23-5
Name
Function
2
5
1
3
4
GND
V
OUT
V
IN
SHDN
NC
Ground Terminal
Regulated Voltage Output
Unregulated Supply Voltage
Shutdown
No connection
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MCP1802T-0902E/OT | 制造商:Microchip Technology Inc 功能描述:HIGH PSRR 300 MA LDO, VIN 10V MAX, VOUT =0.9V SOT-23-5-TR - Tape and Reel |
| MCP1802T-0902I/OT | 功能描述:低壓差穩(wěn)壓器 - LDO Hi PSRR 300 mA LDO Vin 10V maxVout 0.9V 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 |
| MCP1802T-1202I/OT | 功能描述:低壓差穩(wěn)壓器 - LDO Hi PSRR 300 mA LDO Vin 10V maxVout 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 |
| MCP1802T-1802E/OT | 制造商:Microchip Technology Inc 功能描述:HIGH PSRR 300 MA LDO, VIN 10V MAX, VOUT =1.8V SOT-23-5-TR - Tape and Reel |
| MCP1802T-1802I/OT | 功能描述:低壓差穩(wěn)壓器 - LDO Hi PSRR 300 mA LDO Vin 10V maxVout 1.8V 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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