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PULSE-WIDTH-MODULATION CONTROL CIRCUIT
SLVS052G – APRIL 1988 – REVISED JANUARY 2007
ELECTRICAL CHARACTERISTICS (continued)
V
CC
= 15 V, over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
PWM Comparator Section (see
Input threshold voltage, FEEDBACK
Input sink current, FEEDBACK
Zero duty cycle
FEEDBACK = 0.5 V
T
A
= 25°C
∆T
A
= MIN to MAX
3.5
100
V
CC
= 15 V
V
CC
= 40 V
9
11
12.4
15
18
0.3
4
0.7
6
6.9
4.5
V
mA
TEST CONDITIONS
(1)
MIN
TYP
(2)
MAX
UNIT
Undervoltage Lockout Section (see
Threshold voltage
Hysteresis
(6)
Overall Device
Standby supply current
Average supply current
(6)
R
T
at V
ref
,
All other inputs and outputs open
DTC = 2 V, See
mA
mA
V
mV
Hysteresis is the difference between the positive-going input threshold voltage and the negative-going input threshold voltage.
SWITCHING CHARACTERISTICS
V
CC
= 15 V, T
A
= 25°C, over recommended operating conditions (unless otherwise noted)
PARAMETER
Output-voltage rise time
Output-voltage fall time
Output-voltage rise time
Output-voltage fall time
TEST CONDITIONS
Common-emitter configuration (see
Emitter-follower configuration (see
MIN
TYP
100
30
200
45
MAX
200
100
400
100
UNIT
ns
ns
ns
ns
PARAMETER MEASUREMENT INFORMATION
Amplifier Under Test
+
V
I
-
FEEDBACK
+
V
ref
-
Other Amplifier
Figure 1. Amplifier-Characteristics Test Circuit
5
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