MCP1501 datasheet(3/39 Pages) MICROCHIP

3 / 39 page

 2015-2022 Microchip Technology Inc. and its subsidiaries

DS20005474G-page 3

MCP1501

1.0

PIN FUNCTION TABLE

The pin functions are described in Table 1-1.

1.1

Buffered VREF Output (OUT)

This is the Buffered Reference Output. On the WDFN

and SOIC package, this should be connected to the

FEEDBACK pin at the device. The output driver and

the Feedback are tristated when in shutdown.

1.2

Buffered VREF Feedback

(FEEDBACK)

This is the buffer amplifier feedback pin. On the WDFN

and SOIC package, this should be connected to the

OUT pin at the device. This connection is internal on

the SOT-23 package. Note that if there is routing

impedance or IR-drop between the OUT and

FEEDBACK pins, it is the FEEDBACK pin which accu-

rately holds the output voltage. This can be used in an

application to remove IR-drop effects on output voltage

caused by the Printed Circuit Board (PCB) or

interconnect resistance with a high-current load.

1.3

System Ground (GND)

This is the power supply return and should be

connected to system ground.

1.4

Shutdown Pin (SHDN)

This is a digital input that will place the device in

Shutdown. The device should be allowed to power up

before using this feature. This pin is active low. When

this pin is low there will be no output.

1.5

Power Supply Input (VDD)

This power pin also serves as the input voltage for the

voltage reference. Refer to the Electrical Tables to

determine minimum voltage, based on the device. It is

recommended to connect a 0.1uF capacitor very close

to the VDD pin.

1.6

Exposed Thermal Pad (EP)

Not

internally

connected,

but

grounding

recommended. This can be soldered to the ground on

the PCB.

TABLE 1-1:

PIN FUNCTION TABLE

SOT-23

SOIC

2 x 2 WDFN

Symbol

Function

OUT

VREF Output

—

FEEDBACK

VREF Feedback

2, 3, 5

2, 4, 5, 6

GND

System Ground

SHDN

Shutdown Pin Active Low

VDD

Power Supply Input

—

Exposed Thermal Pad

Note:

Before using the Shutdown pin, the device

should first be powered up. Once the

device is fully powered up, the Shutdown

pin can be used.

MCP1501 Datasheet(PDF) 3 Page - Microchip Technology

MCP1501 Datasheet(HTML) 3 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Datasheet Download

Link URL