Datasheet
2002-2012 Microchip Technology Inc. DS21452C-page 3
TC652/TC653
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Input Voltage (V
DD
to GND) ...................................+6V
Output Voltage (OUT to GND) .................................6V
Voltage On Any Pin....... (GND – 0.3V) to (V
DD
+ 0.3V)
Package Thermal Resistance (
JA
) ...........250°C/W
Operating Temperature Range .........-40°C to +125°C
Storage Temperature .........................-65°C to +150°C
*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
periods may affect device reliability.
TC652/TC653 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: V
DD
= 2.8V to 5.5V, SHDN = V
DD
, T
A
= -40C to 125C unless otherwise specified.
Symbol Parameter Min Typ. Max Units Test Conditions
V
DD
Supply Voltage 2.8 — 5.5 V
I
DD
Supply Current — 50 90 APWM, FAULT, T
OVER
are
open
SHDN
Input
V
IH
SHDN Input High Threshold 65 — — %V
DD
V
IL
SHDN Input Low Threshold — — 15 %V
DD
PWM Output
V
OL
PWM Output Low Voltage — — 0.3 V I
SINK
= 1mA
V
OH
PWM Output High Voltage V
DD
– 0.5 — — V I
SOURCE
= 5mA
t
R
PWM Rise Time — 10 — sec I
OH
= 5mA, 1nF from
PWM to GND
t
F
PWM Fall Time — 10 — sec I
OL
= 1mA, 1nF from
PWM to GND
f
OUT
PWM Frequency 10 15 — Hz
t
STARTUP
Start-up Time — 32/f
OUT
—secV
DD
Rises from GND,
or SHDN
Released
V
TH (SENSE)
Sense Input — 70 — mV Sense Input Threshold
Voltage with Repect to
Ground
Temperature Accuracy
T
H ACC
High Temperature Accuracy T
H
- 3 T
H
T
H
+ 3 C Note 1
(T
H –
T
L
)
ACC
Temp. Range Accuracy -1.0 — +1.0 C(T
H
– T
L
) 20C
-2.5 — +2.5 C(T
H
– T
L
) 20C
T
HYST
Auto-shutdown Hysteresis — (T
H
– T
L
)/5 — C TC653 Only
FAULT
Output
V
HIGH
FAULT Output High Voltage V
DD
– 0.5 — — V I
SOURCE
= 1.2mA
V
LOW
FAULT Output Low Voltage — — 0.4 V I
SINK
= 2.5mA
tmp Missing Pulse Detector
Time-out
— — 32/f
OUT
Sec
T
OVER
Output
V
HIGH
T
OVER
Output High Voltage V
DD
– 0.5 — — V I
SOURCE
= 1.2mA
V
LOW
T
OVER
Output Low Voltage — — 0.4 V I
SINK
= 2.5mA
T
OVER
ACC
Absolute Accuracy — T
H
+ 10 — °C At Trip Point
T
OVER HYST
Trip Point Hysteresis — 5 — °C
Note 1: Transition from 90% to 100% Duty Cycle.