TC646BEOA Microchip Technology, TC646BEOA Datasheet - Page 2

• Manufacturer Part Number: TC646BEOA
• Description: IC PWM FAN SPEED CTRLR SD 8-SOIC
• Manufacturer: Microchip Technology
• Type: Controller - PWM Fanr

Specifications of TC646BEOA

• Applications: Fan Controller, Brushless (BLDC)
• Number Of Outputs: 1
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Motor Type: PWM
• No. Of Outputs: 1
• Output Current: 5mA
• Output Voltage: 4.4V
• Supply Voltage Range: 3V To 5.5V
• Driver Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -40°C To +85°C
• Product: Fan / Motor Controllers / Drivers
• Operating Supply Voltage: 6 V
• Supply Current: 400 uA
• Mounting Style: SMD/SMT
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

TC646B/TC648B/TC649B
Functional Block Diagram
DS21755B-page 2
GND
GND
V
V
V
V
C
C
AS
AS
IN
IN
F
F
V
V
SHDN
SHDN
Generator
Generator
Clock
Clock
TC646B/TC649B
V
OTF
TC648B
V
OTF
Note
3xT
Start-up
Missing
Start-up
Control
Control
Detect
Timer
Timer
Pulse
Logic
Timer
Logic
PWM
10 k
70 mV
(typ)
V
V
FAULT
SENSE
V
V
OTF
NC
DD
OUT
DD
OUT
Note: The V
is for the TC646B device only.
OTF
comparator
2003 Microchip Technology Inc.