
2002 Microchip Technology Inc.
DS21737A-page 3
TC664/TC665
1.0
ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings *
VDD..................................................................................6.5 V
Input Voltages .................................... -0.3 V to (VDD + 0.3 V)
Output Voltages ................................. -0.3 V to (VDD + 0.3 V)
Storage temperature .....................................-65°C to +150°C
Ambient temp. with power applied ................-40°C to +125°C
Maximum Junction Temperature, TJ ............................. 150°C
ESD protection on all pins
..................................................≥ 4kV
*Notice: Stresses above those listed under “Maximum rat-
ings” may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at
those or any other conditions above those indicated in the
operational listings of this specification is not implied. Expo-
sure to maximum rating conditions for extended periods may
affect device reliability.
PIN FUNCTION TABLE
ELECTRICAL SPECIFICATIONS
Name
Function
VIN
Analog Input
CF
Analog Output
SCLK
Serial Clock Input
SDA
Serial Data In/Out (Open Drain)
GND
Ground
FAULT
Digital (Open Drain) Output
NC
No Connection
SENSE
Analog Input
VOUT
Digital Output
VDD
Power Supply Input
Electrical Characteristics: Unless otherwise noted, all limits are specified for VDD = 3.0 V to 5.5 V, -40°C <TA < +85°C.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Supply Voltage
VDD
3.0
—
5.5
V
Operating Supply Current
IDD
—
150
300
A
Pins 8, 9 Open
Shutdown Mode Supply Current
IDDSHDN
—
5
10
A
Pins 8, 9 Open
VOUT PWM Output
VOUT Rise Time
tR
——
50
sec
VOUT Fall Time
tF
——
50
sec
Sink Current at VOUT Output
IOL
1.0
—
mA
VOL = 10% of VDD
Source Current at VOUT Output
IOH
5.0
—
mA
VOH = 80% of VDD
PWM Frequency
F
26
30
34
Hz
CF = 1 F
VIN Input
VIN Input Voltage for 100% PWM duty-cycle
VC(MAX)
2.45
2.6
2.75
V
VC(MAX) - VC(MIN)
VCRANGE
1.25
1.4
1.55
V
VIN Input Resistance
—
10M
—
VDD = 5.0 V
VIN Input Leakage Current
IIN
-1.0
—
+1.0
A
SENSE Input
SENSE Input Threshold Voltage with
Respect to GND
VTHSENSE
80
100
120
mV
FAULT Output
FAULT Output LOW Voltage
VOL
——
0.3
V
IOL = 2.5 mA
FAULT Output Response Time
tFAULT
—2.4
—
sec
Fan RPM-to-Digital Output
Fan RPM ERROR
-15
—
+15
%
RPM > 1600
2-Wire Serial Bus Interface
Logic Input High
VIH
2.1
—
V
Logic Input Low
VIL
——
0.8
V
Logic Output Low
VOL
——
0.4
V
IOL = 3 mA
Input Capacitance SDA, SCLK
CIN
—10
15
pF
I/O Leakage Current
ILEAK
-1.0
—
+1.0
A
SDA Output Low Current
IOLSDA
6—
—
mA
VOL = 0.6 V
Note 1: Not production tested, ensured by design, tested during characterization.
2: For 5.0 V < VDD ≤ 5.5 V, the limit for VIH = 2.2 V.