TC646BEUA Microchip Technology, TC646BEUA Datasheet - Page 26
![IC PWM FAN SPEED CTRLR SD 8-MSOP](/photos/6/59/65932/mfg_150_c04-111_ms_8-msop_sml.jpg)
TC646BEUA
Manufacturer Part Number
TC646BEUA
Description
IC PWM FAN SPEED CTRLR SD 8-MSOP
Manufacturer
Microchip Technology
Type
Controller - PWM Fanr
Datasheet
1.TC648BEOA.pdf
(36 pages)
Specifications of TC646BEUA
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-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Motor Type
PWM
No. Of Outputs
1
Output Current
5mA
Output Voltage
4.4V
Supply Voltage Range
3V To 5.5V
Driver Case Style
MSOP
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
TC646BEUA
Manufacturer:
Microchip Technology
Quantity:
135
Company:
Part Number:
TC646BEUA
Manufacturer:
MICROCHIP
Quantity:
12 000
Company:
Part Number:
TC646BEUA713
Manufacturer:
MICROCHIP
Quantity:
12 000
TC646B/TC648B/TC649B
FIGURE 5-13:
Bypass capacitor C
decouple the bias voltage. This is good to have, espe-
cially when using a MOSFET as the drive device. This
helps to give a localized low-impedance source for the
current required to charge the gate capacitance of Q
Two other bypass capacitors (labeled as C
added to decouple the V
added simply to remove any noise present that might
cause false triggerings or PWM jitter. R
resistor for the FAULT output. The value for this resistor
is system-dependent.
DS21755B-page 26
45.3k
237 k
R
R
2
1
+5V
17.8 k
R
4
VDD
+5V
Design Example Schematic.
IN
R
32.4 k
3
is added to the design to
and V
C
0.01 µF
0.01 µF
C
1.0 µF
C
B
Thermometrics
100 k @25°C
NHQ104B425R5
AS
B
F
nodes. These were
3
2
1
V
C
V
5
IN
AS
F
is the pull-up
B
) were also
®
TC649B
V
GND
8
1
DD
.
4
+
1.0 µF
SENSE
C
FAULT
VDD
V
OUT
6
7
5
R
10 k
5
C
0.1 µF
SENSE
R
2003 Microchip Technology Inc.
3.0
SENSE
+12V
Fan
Q
SI2302
or
MGSF1N02E
Panasonic
12V, 140 mA
FBA06T12H
1
®