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EMC2303-1-KP-TR

Description
Motor / Motion / Ignition Controllers & Drivers Triple RPM Based PWM Fan Speed Controller
CategoryPower/power management    The power supply circuit   
File Size749KB,52 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
Download Datasheet Download user manual Parametric View All

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EMC2303-1-KP-TR Overview

Motor / Motion / Ignition Controllers & Drivers Triple RPM Based PWM Fan Speed Controller

EMC2303-1-KP-TR Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Parts packaging codeQFN
package instructionHVQCCN, LCC12,.16SQ,32
Contacts12
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time12 weeks
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage3.6 V
Minimum input voltage3 V
Nominal input voltage3.3 V
JESD-30 codeS-XQCC-N12
JESD-609 codee3
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals12
Maximum operating temperature125 °C
Minimum operating temperature-40 °C
Maximum output voltage3.2 V
Minimum output voltage0.4 V
Package body materialUNSPECIFIED
encapsulated codeHVQCCN
Encapsulate equivalent codeLCC12,.16SQ,32
Package shapeSQUARE
Package formCHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)260
power supply3.3 V
Certification statusNot Qualified
Maximum seat height0.9 mm
Maximum supply current (Isup)0.6 mA
Nominal supply voltage (Vsup)3.3 V
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency400 kHz
Temperature levelAUTOMOTIVE
Terminal surfaceMatte Tin (Sn) - annealed
Terminal formNO LEAD
Terminal pitch0.8 mm
Terminal locationQUAD
Maximum time at peak reflow temperature40
width4 mm
Base Number Matches1
EMC2303
Multiple RPM-Based PWM Fan Controller
for Three Fans
PRODUCT FEATURES
General Description
The EMC2303 is an SMBus compliant fan controller with
up to three independently controlled PWM fan drivers.
Each fan driver is controlled by a programmable
frequency PWM driver and Fan Speed Control algorithm
that operates in either a closed loop fashion or as a
directly PWM-controlled device.
The closed loop Fan Speed Control algorithm (FSC) has
the capability to detect aging fans and alert the system.
It will likewise detect stalled or locked fans and trigger
an interrupt.
Additionally, the EMC2303 offers a clock output so that
multiple devices may be chained and slaved to the
same clock source for optimal performance in large
distributed systems.
Datasheet
Features
Three Programmable Fan Control circuits (EMC2303)
4-wire fan compatible
High speed PWM (26 kHz)
Low speed PWM (9.5Hz - 2240 Hz)
Optional detection of aging fans
Fan Spin Up Control and Ramp Rate Control
Alert on Fan Stall
Up to 3 Selectable Default Fan Speeds
Watchdog Timer
RPM-based fan control algorithm
— 0.5% accuracy from 500 RPM to 16k RPM (external
crystal oscillator)
— 1% accuracy from 500 RPM to 16k RPM (internal clock)
SMBus 2.0 Compliant
— Up to 6 selectable SMBus addresses
— SMBus Alert compatible
Applications
Servers
Projectors
Industrial and Networking Equipment
Notebook Computers
CLK Pin can provide a clock source output
Available in a 12-pin 4mm x 4mm QFN Lead-free
RoHS Compliant package
Block Diagram
CLK
TACH1
TACH2
TACH3
Tach
Measurement
Tachometer
Limit
Registers
SMBus
Slave
Protocol
ADDR_SEL
SMCLK
SMDATA
ALERT#
PWM1
PWM2
PWM3
PWM
Drivers
Fan Speed Control Algorithm
Fan Speed Control Algorithm
Fan Speed Control Algorithm
SMSC EMC2303
DATASHEET
Revision 1.3 (05-18-11)
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