Datasheet

 2001-2012 Microchip Technology Inc. DS21448D-page 3
TC648
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage .........................................................6V
Input Voltage, Any Pin... (GND – 0.3V) to (V
DD
+ 0.3V)
Package Thermal Resistance:
PDIP (R
JA
).............................................125°C/W
SOIC (R
JA
) ............................................155°C/W
MSOP (R
JA
) ..........................................200°C/W
Specified Temperature Range............-40°C to +125°C
Storage Temperature Range..............-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 peri-
ods may affect device reliability.
DC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise specified, T
MIN
 T
A
 T
MAX
, V
DD
= 3.0V to 5.5V
Symbol Parameter Min Typ Max Units Test Conditions
V
DD
Supply Voltage 3.0 — 5.5 V
I
DD
Supply Current, Operating — 0.5 1.0 mA Pins 6, 7 Open,
C
F
= 1 µF, V
IN
= V
C(MAX)
I
DD(SHDN)
Supply Current, Shutdown/
Auto-shutdown Mode
— 25 — µA Pins 6, 7 Open;
Note 1
C
F
=1 µF, V
IN
= 0.35V
I
IN
V
IN
, V
AS
Input Leakage -1.0 — +1.0 µA Note 1
V
OUT
Output
t
R
V
OUT
Rise Time — — 50 µsec I
OH
= 5 mA, Note 1
t
F
V
OUT
Fall Time — — 50 µsec I
OL
= 1 mA, Note 1
I
OL
Sink Current at V
OUT
Output 1.0 — — mA V
OL
= 10% of V
DD
I
OH
Source Current at V
OUT
Output
5.0 — — mA V
OH
= 80% of V
DD
SENSE Input
V
TH(SENSE)
SENSE Input Threshold
Voltage with Respect to GND
50 70 90 mV Note 1
OTF
Output
V
OL
Output Low Voltage — — 0.3 V I
OL
= 2.5 mA
V
IN
, V
AS
Inputs
V
C(MAX),
V
OTF
Voltage at V
IN
for 100% Duty
Cycle and Overtemp. Fault
2.5 2.65 2.8 V
V
C(SPAN)
V
C(MAX)
- V
C(MIN)
1.3 1.4 1.5 V
V
AS
Auto-shutdown Threshold V
C(MAX) ~
V
C(SPAN)
— V
C(MAX)
V
V
SHDN
Voltage Applied to V
IN
to
Ensure Reset/Shutdown
—— V
DD
x 0.13 V
V
REL
Voltage Applied to V
IN
to
Release Reset Mode
V
DD
x 0.19 — — V V
DD
= 5V
V
HYST
Hysteresis on V
SHDN,
V
REL
— 0.01 x V
DD
—V
V
HAS
Hysteresis on Auto-shutdown
Comparator
—70—mV
Note 1: Ensured by design, not tested.