MCP1702-2502E/CB MICROCHIP [Microchip Technology], MCP1702-2502E/CB Datasheet - Page 10

• Manufacturer Part Number: MCP1702-2502E/CB
• Description: 250 mA Low Quiescent Current LDO Regulator
• Manufacturer: MICROCHIP [Microchip Technology]

MCP1702
3.0
The descriptions of the pins are listed in Table 3-1.
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 (2.0 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.
DS22008B-page 10
SOT-23A
Pin No.
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
2, Tab
PIN FUNCTION TABLE
1
3
–
Pin No.
OUT
TO-92
1
3
2
–
pin as is practical.
Symbol
V
OUT
GND
V
NC
OUT
IN
)
Ground Terminal
Regulated Voltage Output
Unregulated Supply Voltage
No connection
3.3
Connect V
Like all LDO 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
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
capacitors
IN
IN
be
to the input unregulated source voltage.
)
ceramic,
Function
or
© 2007 Microchip Technology Inc.
battery
tantalum
type.
or
For
aluminum
most