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SG3524NE4 Datasheet(PDF) 3 Page - Texas Instruments

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Part No. SG3524NE4
Description  REGULATING PULSE-WIDTH MODULATORS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

SG3524NE4 Datasheet(HTML) 3 Page - Texas Instruments

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SG2524, SG3524
REGULATING PULSEWIDTH MODULATORS
SLVS077D ? APRIL 1977 ? REVISED FEBRUARY 2003
3
POST OFFICE BOX 655303
? DALLAS, TEXAS 75265
recommended operating conditions
MIN
MAX
UNIT
VCC
Supply voltage
8
40
V
Reference output current
0
50
mA
Current through CT terminal
?0.03
?2
mA
RT
Timing resistor
1.8
100
k
?
CT
Timing capacitor
0.001
0.1
µF
TA
Operating free air temperature
SG2524
?25
85
°C
TA
Operating free-air temperature
SG3524
0
70
°C
electrical characteristics over recommended operating free-air temperature range, VCC = 20 V,
f = 20 kHz (unless otherwise noted)
reference section
PARAMETER
TEST CONDITIONS?
SG2524
SG3524
UNIT
PARAMETER
TEST CONDITIONS?
MIN
TYP?
MAX
MIN
TYP?
MAX
UNIT
Output voltage
4.8
5
5.2
4.6
5
5.4
V
Input regulation
VCC = 8 V to 40 V
10
20
10
30
mV
Ripple rejection
f = 120 Hz
66
66
dB
Output regulation
IO = 0 mA to 20 mA
20
50
20
50
mV
Output voltage change with temperature
TA = MIN to MAX
0.3%
1%
0.3%
1%
Short-circuit output current§
Vref = 0
100
100
mA
? 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:
s +
N
n
+1
(xn
* X)2
N
* 1
oscillator section
PARAMETER
TEST CONDITIONS?
MIN
TYP?
MAX
UNIT
fosc
Oscillator frequency
CT = 0.001 µF,
RT = 2 k?
450
kHz
Standard deviation of frequency§
All values of voltage, temperature, resistance,
and capacitance constant
5%
?f
Frequency change with voltage
VCC = 8 V to 40 V,
TA = 25°C
1%
?fosc
Frequency change with temperature
TA = MIN to MAX
2%
Output amplitude at OSC OUT
TA = 25°C
3.5
V
tw
Output pulse duration (width) at OSC OUT
CT = 0.01 µF,
TA = 25°C
0.5
µs
? 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:
s +
N
n
+1
(xn
* X)2
N
* 1


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