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| 型号： | MCP1541-I/TO |
| 厂商： | Microchip Technology |
| 文件页数： | 4/20页 |
| 文件大小： | 0K |
| 描述： | IC VREF SRS PREC 4.096V TO-92-3 |
| 标准包装： | 1,000 |
| 基准类型： | 串联，精度 |
| 输出电压： | 4.096V |
| 容差： | ±1% |
| 温度系数： | 50ppm/°C |
| 输入电压： | 4.3 V ~ 5.5 V |
| 通道数： | 1 |
| 电流 - 静态： | 100µA |
| 电流 - 输出： | 2mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 散装 |
| 产品目录页面： | 663 (CN2011-ZH PDF) |
| 其它名称： | MCP1541I/TO |
MCP1525/41
1.1.4
DROPOUT VOLTAGE
1.1.9
LONG-TERM OUTPUT STABILITY
The dropout voltage of these devices is measured by
reducing V IN to the point where the output drops by 1%.
Under these conditions the dropout voltage is equal to:
EQUATION 1-2:
V DROP = V IN – V OUT
The long-term output stability is measured by exposing
the devices to an ambient temperature of 125°C
devices are measured periodically at +25°C.
V IN = 5.5V
The dropout voltage is affected
temperature and load current.
by
ambient
MCP1525
MCP1541
In Figure 2-18, the dropout voltage is shown over a
V IN
R L
negative and positive range of output current. For
currents above zero milliamps, the dropout voltage is
positive. In this case, the voltage reference is primarily
powered by V IN . With output currents below zero
V OUT
V SS
C L
1 μF
±2 mA
square wave
@ 10 Hz
milliamps, the dropout voltage is negative. As the
output current becomes more negative, the input
current (I IN ) reduces. Under this condition, the output
current begins to provide the needed power to the
FIGURE 1-1:
Configuration.
Dynamic Life Test
voltage reference.
1.1.10
OUTPUT VOLTAGE HYSTERESIS
1.1.5
LINE REGULATION
The output voltage hysteresis is a measure of the
output voltage error once the powered devices are
Line regulation is a measure of the change in output
voltage (V OUT ) as a function of a change in the input
voltage (V IN ). This is expressed as Δ V OUT / Δ V IN and is
measured in either μV/V or ppm. For example, a 1 μV
change in V OUT caused by a 500 mV change in V IN
would net a Δ V OUT / Δ V IN of 2 μV/V, or 2 ppm.
cycled over the entire operating temperature range.
The amount of hysteresis can be quantified by
measuring the change in the +25°C output voltage after
temperature excursions from +25°C to +85°C to +25°C
and also from +25°C to -40°C to +25°C.
1.1.6
LOAD REGULATION ( Δ V OUT / Δ I OUT )
Load regulation is a measure of the change in the
output voltage (V OUT ) as a function of the change in
output current (I OUT ). Load regulation is usually
measured in mV/mA.
1.1.7
INPUT CURRENT
The input current (operating current) is the current that
sinks from V IN to V SS without a load current on the out-
put pin. This current is affected by temperature and the
output current.
1.1.8
INPUT VOLTAGE REJECTION
RATIO
The Input Voltage Rejection Ratio (IVRR) is a measure
of the change in output voltage versus the change in
The calculation used for this plot is:
EQUATION 1-3:
V IN
IVRR = 20 log -------------
V OUT
DS21653B-page 4
( dB )
? 2005 Microchip Technology Inc.
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