MCP16323

DS22284A-page 4

© 2011 Microchip Technology Inc.

PFM Mode Feedback

Comparator Threshold

—

V

Feedback Input Bias

Current

—100

—

nA

EN Input Characteristics

EN Input Logic High

2.2

——

V

EN Input Logic Low

——

0.8

V

EN Input Hysteresis

—480

—

mV

EN Input Leakage Current

—3.5

—

µA

—-1.5

—

µA

Soft-Start Time

—4

—

ms

Switching Characteristics

Switching Frequency

0.9

1

1.1

Maximum Duty Cycle

95

97

99

%

Note 1

Minimum Duty Cycle

—

7

—

%

NMOS Low-Side

Switch On Resistance

—120

—

m

Ω

NMOS High-Side

Switch On Resistance

High-Side

—180

—

m

Ω

NMOS High-Side

Switch Current Limit

3.4

3.8

4.4

A

MCP16323

PG Output Characteristics

PG Low-level

Output Voltage

——

0.01

PG High-Level Output

Leakage Current

—0.5

—

µA

PG Release Timer

—10

—

ms

Threshold

Hysteresis

—

old

T

—

Hysteresis

—

Thermal Characteristics

Thermal Shutdown

Die Temperature

—170

—

°C

Die Temperature

Hysteresis

—10

—

°C

DC CHARACTERISTICS (CONTINUED)

Electrical Characteristics:

Parameters

Sym

Min

Typ

Max

Units

Conditions

Note 1:

Regulator SW pin is forced off for 240 ns every 8 cycles to ensure the BOOST cap is replenished.

2:

As a result of the maximum duty cycle limitations, 3A of output current for 5V output conditions may not

regulate the voltage. External component selection may have an impact on this. A minimum input voltage

of 6.5V is recommended.