EMC2103 datasheet(14/85 Pages) MICROCHIP

14 / 85 page

RPM-Based Fan Controller with Hardware Thermal Shutdown

Datasheet

DS0005250A-page 14

 2013 Microchip Technology Inc.

3.1

Electrical Specifications

Table 3.2 Electrical Specifications

VDD = 3V to 3.6V, TA = -40°C to 125°C, all Typical values at TA = 27°C unless otherwise noted.

CHARACTERISTIC

SYMBOL

MIN

TYP

MAX

UNIT

CONDITIONS

DC Power

Supply Voltage

VDD

3.3

3.6

Supply Current

IDD

1.3

1.8

4 Conversions / second, Fan

Driver active at maximum PWM

frequency, Dynamic Averaging

Enabled (EMC2103-2 and

EMC2103-4)

1.5

4 Conversions / second, Fan

Driver active at maximum PWM

frequency, Dynamic Averaging

Enabled (EMC2103-1)

450

750

1 Conversions / second, Fan

Driver not active, Dynamic

Averaging Disabled

First Conversion

Ready

tCONV_T

175

300

Time after power up before all

channels updated

SMBus Delay

tSMB_D

Time before SMBus

communications should be sent

by host

External Temperature Monitors

Temperature

Accuracy

±0.5

±1

°C

60°C < TDIODE < 125°C

30°C < TA < 100°C

±1

±2

°C

-40°C < TDIODE < 125°C

Temperature

Resolution

0.125

°C

Diode decoupling

capacitor

CFILTER

2200

2700

Connected across external

diode, CPU, GPU, or AMD diode

Resistance Error

Corrected

RSERIES

100

Ohm

Sum of series resistance in both

DP and DN lines

Internal Temperature Monitor

Temperature

Accuracy

TDIE

±1

±2

°C

-40°C < TA < 125°C

TDIE

±1.5

°C

0°C < TA < 85°C

Temperature

Resolution

0.125

°C

PWM Fan Driver

PWM Resolution

PWM

256

Steps

PWM Duty Cycle

DUTY

100

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