TC647 Microchip, TC647 Datasheet - Page 3

• Manufacturer Part Number: TC647
• Description: PWM Fan Speed Controller
• Manufacturer: Microchip

1.0
Absolute Maximum Ratings*
Supply Voltage ......................................................... 6V
Input Voltage, Any Pin.... (GND – 0.3V) to (V
Package Thermal Resistance:
Specified Temperature Range ........... -40°C to +125°C
Storage Temperature Range.............. -65°C to +150°C
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, T
V
I
I
I
V
t
t
t
I
I
V
V
V
V
V
Pulse Width Modulator
F
SENSE Input
V
FAULT Output
V
t
t
t
Note 1: Ensured by design, not tested.
DD
DD(SHDN)
IN
R
F
SHDN
OL
OH
MP
STARTUP
DIAG
PWM
DD
OUT
IN
C(MAX)
C(SPAN)
SHDN
REL
TH(SENSE)
OL
2002 Microchip Technology Inc.
, V
PDIP (R
SOIC (R
MSOP (R
Symbol
Output
MIN
ELECTRICAL
CHARACTERISTICS
Inputs
JA
JA
JA
)............................................. 125°C/W
) ............................................ 155°C/W
) .......................................... 200°C/W
Supply Voltage
Supply Current, Operating
Supply Current,
Shutdown Mode
V
V
V
Pulse Width (On V
Fault Mode
Sink Current at V
Source Current at V
Input Voltage at V
100% PWM Duty Cycle
V
Voltage Applied to V
Ensure Shutdown Mode
Voltage Applied to V
Release Shutdown Mode
PWM Frequency
SENSE Input Threshold
Voltage with Respect to GND
Output Low Voltage
Missing Pulse Detector Timer
Start-up Timer
Diagnostic Timer
IN
OUT
OUT
C(MAX)
, V
MIN
Rise Time
Fall Time
- V
Input Leakage
Parameter
C(MIN)
OUT
IN
MIN
OUT
or V
MIN
MIN
Output
) to Clear
to
MIN
to
Output
for
DD
+0.3V)
V
MIN
DD
– 1.0
Min
3.0
1.0
5.0
2.5
1.3
30
26
50
—
—
—
—
—
—
—
—
—
x 0.19
< T
A
< T
MAX
*Stresses above those listed under "Absolute Maximum Rat-
ings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the
operation sections of the specifications is not implied. Expo-
sure to absolute maximum rating conditions for extended peri-
ods may affect device reliability.
32/F
32/F
2.65
Typ
0.5
1.4
3/F
25
30
70
—
—
—
—
—
—
—
—
—
—
, V
DD
V
= 3.0V to 5.5V.
DD
Max
+1.0
5.5
2.8
1.5
0.3
50
50
34
90
—
—
—
—
—
—
—
—
x 0.13
1
Units
µsec
µsec
µsec
mA
mV
Sec
Sec
Sec
µA
mA
mA
Hz
µA
V
V
V
V
V
V
Pins 6, 7 Open,
C
Pins 6, 7 Open,
C
Note 1
I
I
V
Specifications, Note 1
V
V
V
C
Note 1
I
OH
OL
OL
SHDN
OL
OH
DD
F
F
F
= 1 µF, V
= 1 µF, V
= 1.0 µF
= 1 mA, Note 1
= 2.5 mA
= 5 mA, Note 1
= 10% of V
= 5V
= 80% of V
Test Conditions
, V
DS21447C-page 3
TC647
HYST
IN
MIN
= V
DD
DD
= 0.35V
C(MAX)