EMC2302 datasheet(4/70 Pages) MICROCHIP

4 / 70 page

EMC2301/2/3/5

DS20006532A-page 4

 2021 Microchip Technology Inc.

1.2

DC Characteristics

Electrical Specifications: Unless otherwise indicated, VDD = 3.0V to 3.6V, all typical values at TA = +27°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

DC Power

Supply Voltage

VDD

33.3

3.6

Supply Current

IDD

—

350

475

µA

EMC2301, channel active

—

400

550

EMC2302, all channels active

—

475

600

EMC2303, all channels active

—

625

800

EMC2305, all channels active

PWM Fan Driver

PWM Resolution

PWM

—

256

—

Steps

PWM Duty Cycle

DUTY

—

100

RPM-Based Fan Controller

Tachometer Range

TACH

480

—

16000

RPM

Tachometer Setting

Accuracy

TACH

—

±0.5

±1

External oscillator 32.768kHz

—

±1

±2

Internal oscillator

Input High Voltage

VIH

2.0

—

Input Low Voltage

VIL

——

0.8

Output High Voltage

VOH

VDD - 0.4

—

8 mA current drive

Output Low Voltage

VOL

—

0.4

8 mA current sink

Leakage Current

ILEAK

—

±5

µA

ALERT pin powered and

unpowered

0°C < TA < 85°C

Pull-up voltage ≤ 3.6V

1.3

SMBus Module DC Characteristics

Operating Conditions: Unless otherwise indicated, VDD = 3V to 3.6V, TA = -40°C to +125°C.

Parameters

Sym.

Min.

Typ.

Max.

Units

Conditions

SMBus Interface

Input High Voltage

VIH

2.0

—

Input Low Voltage

VIL

——

0.8

Output High Voltage

VOH

VDD - 0.4

—

Output Low Voltage

VOL

—

0.4

4 mA current sink

Input High/Low Current

IIH/IIL

—

±5

µA

Powered and unpowered

0°C < TA < 85°C

Input Capacitance

CIN

—5

—

SMBus Timing

Clock Frequency

fSMB

—

400

kHz

Spike Suppression

tSP

—

Bus free time Start to Stop

tBUF

1.3

—

µs

Setup Time: Start

tSU:STA

0.6

—

µs

Setup Time: Stop

tSU:STP

0.6

—

µs

Data Hold Time

tHD:DAT

0—

—

µs

Data Setup Time

tSU:DAT

0.6

—

µs

Clock Low Period

tLOW

1.3

—

µs

Clock High Period

tHIGH

0.6

—

µs

Clock/Data Fall Time

tFALL

—

300

Min. = 20 + 0.1CLOAD ns

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