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SG3524NE4 Datasheet(PDF) 2 Page - Texas Instruments

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

SG3524NE4 Datasheet(HTML) 2 Page - Texas Instruments

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SG2524, SG3524
REGULATING PULSEWIDTH MODULATORS
SLVS077D – APRIL 1977 – REVISED FEBRUARY 2003
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
functional block diagram
T
COL 2
OSC OUT
EMIT 2
EMIT 1
COL 1
Vref
Reference
Regulator
Comparator
Oscillator
SHUTDOWN
Error Amplifier
1
2
9
4
5
CURR LIM–
CURR LIM+
GND
8
10
+
NOTE A: Resistor values shown are nominal.
12
11
13
14
3
IN–
IN+
COMP
1 k
10 k
15
RT
CT
REF OUT
16
6
7
Vref
Vref
Vref
Vref
VCC
Vref
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Notes 1 and 2)
40 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Collector output current, ICC
100 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reference output current, IO(ref)
50 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current through CT terminal
–5 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating virtual junction temperature, TJ
150
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package thermal impedance,
θJA (see Notes 3 and 4): D package
73
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
N package
67
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
NS package
64
°C/W
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
260
°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES:
1. All voltage values are with respect to network ground terminal.
2. The reference regulator may be bypassed for operation from a fixed 5-V supply by connecting the VCC and reference output
(REF OUT) pin both to the supply voltage. In this configuration, the maximum supply voltage is 6 V.
3. Maximum power dissipation is a function of TJ(max), θJA,and TA. The maximum allowable power dissipation at any allowable ambient
temperature is PD = (TJ(max) – TA)/θJA. Operation at the absolute maximum TJ of 150°C can impact reliability.
4. The package thermal impedance is calculated in accordance with JESD 51-7.


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