参数资料
型号: MCP1804T-A002I/MT
厂商: Microchip Technology
文件页数: 16/32页
文件大小: 0K
描述: IC REG LDO 10V .15A SOT89-5
标准包装: 1
稳压器拓扑结构: 正,固定式
输出电压: 10V
输入电压: 最高 28V
电压 - 压降(标准): 0.7V @ 100mA
稳压器数量: 1
电流 - 输出: 150mA(最小)
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: SOT-89-5/6
供应商设备封装: SOT-89-5
包装: 标准包装
产品目录页面: 667 (CN2011-ZH PDF)
其它名称: MCP1804T-A002I/MTDKR
MCP1804
3.0
PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 3-1 .
TABLE 3-1:
MCP1804 PIN FUNCTION TABLE
MCP1804
Symbol
Description
SOT-23-5
SOT-89-5
SOT-89-3
SOT-223-3
1
2
3
4
5
5
2,TAB
4
3
1
3
2, TAB
1
3
2
TAB
1
V IN
GND
NC
SHDN
V OUT
Unregulated Supply Voltage
Ground Terminal
No connection
Shutdown
Regulated Voltage Output
3.1
Unregulated Input Voltage (V IN )
3.3
Shutdown Input (SHDN)
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 to 1.0 μF of capacitance will
ensure stable operation of the LDO circuit. The type of
capacitor used can be ceramic, tantalum or aluminum
electrolytic. The low ESR characteristics of the ceramic
will yield better noise and PSRR performance at
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
quiescent current is 0.01 μA. The SHDN pin does not
have an internal pullup or pulldown resistor. The SHDN
pin must be connected to either V IN or GND to prevent
the device from becoming unstable.
high-frequency.
3.4
Regulated Output Voltage (V OUT )
3.2
Ground Terminal (GND)
Connect V OUT to the positive side of the load and the
positive terminal of the output capacitor. The positive
Regulator ground. Tie GND to the negative side of the
output and the negative side of the input capacitor.
Only the LDO bias current (50 to 60 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.
DS22200C-page 16
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. For most applications, 0.1 μF to 1.0 μF of
capacitance will ensure stable operation of the LDO
circuit. Larger values may be used to improve dynamic
load response. The type of capacitor used can be
ceramic, tantalum or aluminum electrolytic. The low
ESR characteristics of the ceramic will yield better
noise and PSRR performance at high-frequency.
? 2011 Microchip Technology Inc.
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