Datasheet

 2005-2018 Microchip Technology Inc. DS20001826E-page 16
MCP1700
6.4 Voltage Reference
The MCP1700 can be used not only as a regulator, but
also as a low quiescent current voltage reference. In
many microcontroller applications, the initial accuracy
of the reference can be calibrated using production test
equipment or by using a ratio measurement. When the
initial accuracy is calibrated, the thermal stability and
line regulation tolerance are the only errors introduced
by the MCP1700 LDO. The low cost, low quiescent
current and small ceramic output capacitor are all
advantages when using the MCP1700 as a voltage
reference.
FIGURE 6-2: Using the MCP1700 as a
voltage reference.
6.5 Pulsed Load Applications
For some applications, there are pulsed load current
events that may exceed the specified 250 mA
maximum specification of the MCP1700. The internal
current limit of the MCP1700 will prevent high peak
load demands from causing non-recoverable damage.
The 250 mA rating is a maximum average continuous
rating. As long as the average current does not exceed
250 mA, pulsed higher load currents can be applied to
the MCP1700
. The typical current limit for the
MCP1700 is 550 mA (T
A
+25°C).
PIC
®
GND
V
IN
C
IN
1µF
C
OUT
1µF
Bridge Sensor
V
OUT
V
REF
AD0
AD1
Ratio Metric Reference
1 µA Bias
Microcontroller
MCP1700