MCP1700 Microchip Technology, MCP1700 Datasheet - Page 10

• Manufacturer Part Number: MCP1700
• Description: Low Quiescent Current LDO
• Manufacturer: Microchip Technology

MCP1700
3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
Regulator ground. Tie GND to the negative side of the
output and the negative side of the input capacitor.
Only the LDO bias current (1.6 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
Connect V
positive terminal of the output capacitor. The positive
side of the output capacitor should be physically
located as close to the LDO V
The current flowing out of this pin is equal to the DC
load current.
DS21826B-page 10
Pin No.
SOT-23
1
2
3
PIN DESCRIPTIONS
Ground Terminal (GND)
Regulated Output Voltage (V
OUT
to the positive side of the load and the
Pin No.
SOT-89
PIN FUNCTION TABLE
1
3
2
Pin No.
OUT
TO-92
1
3
2
pin as is practical.
Table
Name
V
OUT
3-1.
GND
V
OUT
IN
)
Ground Terminal
Regulated Voltage Output
Unregulated Supply Voltage
3.3
Connect V
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, 1 µF of capacitance will ensure stable
operation of the LDO circuit. For applications that have
load currents below 100 mA, the input capacitance
requirement can be lowered. The type of capacitor
used
electrolytic. The low ESR characteristics of the ceramic
will yield better noise and PSRR performance at high
frequency.
can
Unregulated Input Voltage Pin
(V
IN
IN
be
to the input unregulated source voltage.
)
ceramic,
Function
© 2007 Microchip Technology Inc.
tantalum
or
aluminum