© 2008 Microchip Technology Inc.

DS22063B-page 7

MCP1631/HV/MCP1631V/VHV

VS Amplifier PSRR

PSRR

—

65

—

dB

Common Mode Input Range

GND

—

V

Rail to Rail Input

Closed-loop Voltage Gain

—1

—

V/V

Low-level Output

—

38

GND + 85

mV

VS Amplifier Sink Current

15

—

mA

VS Amplifier Source Current

-2

-5

—

mA

Peak Current Sense Input (C1)

Maximum Current Sense Signal

MCP1631/MCP1631HV

0.85

0.9

0.98

V

Maximum Ramp Signal

MCP1631V/MCP1631VHV

2.7

2.78

2.9

V

Maximum CS input range limited

by comparator input common

Current Sense Input Bias Current

—-0.1

—

µA

MCP1631

—8.5

25

ns

Note 1

Minimum Duty Cycle

——

0

%

Overvoltage Sense Comparator (C2)

OV Reference Voltage High

—1.23

—

V

OV Reference Voltage Low

1.15

1.18

1.23

V

OV Hysteresis

OV_HYS

—

50

—

mV

Overvoltage Comparator

Hysteresis

OV_IN Bias Current

—0.001

1

µA

—

63

150

ns

Delay from OV detection to PWM

termination (Note 1)

OV Input Capacitance

—5

—

pF

Internal Regulator HV Options Input / Output Characteristics

Input Operating Voltage

3.5

—

16.0

V

Note 2

Maximum Output Current

250

—

—

mA

Output Short Circuit Current

—

400

—

mA

Current (average current)

measured 10 ms after short is

applied.

Output Voltage Regulation

V

—

50

150

ppm/

°C

Note 3

DC CHARACTERISTICS (CONTINUED)

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

characterization testing. Signal levels between 0.8V and 2.0V with rise and fall times measured between 10% and 90%

of maximum and minimum values. Not production tested. Additional timing specifications were fully characterized and

specified that are not production tested.

2:

3:

4:

Load regulation is measured at a constant junction temperature using low duty cycle pulse testing. Changes in output

5:

Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its measured