TC646
DC ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics:
Unless otherwise specified, T
MIN
≤
T
A
≤
T
MAX
, V
DD
= 3.0V to 5.5V
Symbol
V
IN
, V
AS
Inputs
V
C(MAX),
V
OTF
Voltage at V
IN
for 100% Duty
Cycle and Overtemp. Fault
V
C(SPAN)
V
AS
V
SHDN
V
REL
V
HYST
V
HAS
V
C(MAX)
- V
C(MIN)
Auto-shutdown Threshold
Voltage Applied to V
IN
to
ensure Reset/Shutdown
Voltage Applied to V
IN
to
Release Reset Mode
Hysteresis on V
SHDN,
V
REL
Hysteresis on Auto-shutdown
Comparator
2.5
1.3
V
C(MAX) ~
V
C(SPAN)
—
V
DD
x 0.19
—
—
2.65
1.4
—
—
—
0.01 x V
DD
70
2.8
1.5
V
C(MAX)
V
DD
x 0.13
—
—
—
V
V
V
V
V
V
mV
V
DD
= 5V,
See Figure 5-11
Parameter
Min
Typ
Max
Units
Test Conditions
Pulse Width Modulator
F
OSC
PWM Frequency
26
30
34
Hz
C
F
= 1.0 µF
Note 1:
Ensured by design, not tested.
DS21446C-page 4
2002 Microchip Technology Inc.
MICROCHIP [ MICROCHIP TECHNOLOGY ]
