SG2524, SG3524
REGULATING PULSE WIDTH MODULATORS
SLVS077D – APRIL 1977 – REVISED FEBRUARY 2003
recommended operating conditions
MIN
VCC
Supply voltage
Reference output current
Current through CT terminal
RT
CT
TA
Timing resistor
Timing capacitor
SG2524
Operating free-air temperature
free air
SG3524
8
0
–0.03
1.8
0.001
–25
0
MAX
40
50
–2
100
0.1
85
70
UNIT
V
mA
mA
kΩ
µF
°C
electrical characteristics over recommended operating free-air temperature range, V
CC
= 20 V,
f = 20 kHz (unless otherwise noted)
reference section
PARAMETER
Output voltage
Input regulation
Ripple rejection
Output regulation
Output voltage change with temperature
Short-circuit output current§
VCC = 8 V to 40 V
f = 120 Hz
IO = 0 mA to 20 mA
TA = MIN to MAX
TEST CONDITIONS†
SG2524
MIN TYP‡
4.8
5
10
66
20
0.3%
50
1%
MAX
5.2
20
SG3524
MIN TYP‡
4.6
5
10
66
20
0.3%
50
1%
mA
MAX
5.4
30
UNIT
V
mV
dB
mV
Vref = 0
100
100
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values, except for temperature coefficients, are at TA = 25°C
§ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
N
(x
n
*
X)
2
s
+
n+1
N
*
1
oscillator section
PARAMETER
fosc
Oscillator frequency
Standard deviation of frequency§
∆f
osc
Frequency change with voltage
Frequency change with temperature
Output amplitude at OSC OUT
TEST CONDITIONS†
CT = 0.001
µF,
RT = 2 kΩ
All values of voltage, temperature, resistance,
and capacitance constant
VCC = 8 V to 40 V,
TA = MIN to MAX
TA = 25°C
CT = 0.01
µF,
TA = 25°C
3.5
MIN
TYP‡
450
5%
1%
2%
V
µs
MAX
UNIT
kHz
tw
Output pulse duration (width) at OSC OUT
TA = 25°C
0.5
† For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
‡ All typical values, except for temperature coefficients, are at TA = 25°C
§ Standard deviation is a measure of the statistical distribution about the mean, as derived from the formula:
N
(x
n
*
X)
2
s
+
n+1
N
*
1
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
3
TI [ TEXAS INSTRUMENTS ]
