MCPF1412M06 datasheet(8/63 Pages) MICROCHIP

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MCPF1412M06

Functional Description

Data Sheet

DS60001885C - 8

Figure 2-3. Soft Start Operation

Initialization complete

Internal

Soft start

VOUT

0.9*VOUT

SS time

Overcurrent Protection (OCP) and Overvoltage Protection (OVP) are active during soft start to

safeguard the MCPF1412M06 from short circuits and excessive voltages.

A resistor divider can be utilized with a standard MCPF1412M06 device to set the desired output

voltage (Figure 2-4). This provides system designers with the flexibility to configure all power rails in

the system across the entire output voltage range (0.6–1.8V) using a single component.

Figure 2-4. Resistor Divider to Set Output Voltage

RBOTTOM

MCPF1412

PVIN

VOUT

RTOP

PVCC

VCC

PVIN

VIN

The following equation describes the appropriate resistor divider selection to set the output voltage

using an MCPF1412M06 programmed to 0.6V:

RBOTTOM=

RTOP

1.7975×VOUT−1.0639−0.00894×RTOP

Where:

RTOP and RBOTTOM are in kΩ.

It is recommended that system designers place a capacitor (CFF in Figure 5-1) of 47 pF to 470 pF in

parallel with RTOP. 4.12 kΩ is suggested as a value for RTOP. The recommended value for RBOTTOM

MCPF1412M06 Datasheet(PDF) 8 Page - Microchip Technology