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LM3524D Arkusz danych(PDF) 3 Page - Texas Instruments

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Numer części LM3524D
Szczegółowy opis  LM2524D/LM3524D Regulating Pulse Width Modulator
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Producent  TI [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI - Texas Instruments

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LM2524D, LM3524D
www.ti.com
SNVS766E – JUNE 2009 – REVISED MAY 2013
These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam
during storage or handling to prevent electrostatic damage to the MOS gates.
Absolute Maximum Ratings
(1) (2)
Supply Voltage
40V
Collector Supply Voltage
LM2524D
55V
LM3524D
40V
Output Current DC (each)
200 mA
Oscillator Charging Current (Pin 7)
5 mA
Internal Power Dissipation
1W
Operating Junction Temperature Range (3)
LM2524D
−40°C to +125°C
LM3524D
0°C to +125°C
Maximum Junction Temperature
150°
Storage Temperature Range
−65°C to +150°C
Lead Temperature (Soldering 4 sec.)
NFG, D Pkg.
260°C
(1)
Absolute maximum ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not
apply when operating the device beyond its rated operating conditions.
(2)
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
(3)
For operation at elevated temperatures, devices in the NFG package must be derated based on a thermal resistance of 86°C/W,
junction to ambient. Devices in the D package must be derated at 125°C/W, junction to ambient.
Electrical Characteristics
(1)
Symbol
Parameter
Conditions
LM2524D
LM3524D
Units
Typ
Tested
Design
Typ
Tested
Design
Limit(2)
Limit(3)
Limit(2)
Limit(3)
REFERENCE SECTION
VREF
Output Voltage
5
4.85
4.80
5
4.75
VMin
5.15
5.20
5.25
VMax
VRLine
Line Regulation
VIN = 8V to 40V
10
15
30
10
25
50
mVMax
VRLoad
Load Regulation
IL = 0 mA to 20 mA
10
15
25
10
25
50
mVMax
ΔVIN/ΔVREF
Ripple Rejection
f = 120 Hz
66
66
dB
IOS
Short Circuit Current
VREF = 0
25
25
mA Min
50
50
180
200
mA Max
NO
Output Noise
10 Hz
≤ f ≤ 10 kHz
40
100
40
100
μVrms
Max
Long Term Stability
TA = 125°C
20
20
mV/kHr
OSCILLATOR SECTION
fOSC
Max. Freq.
RT = 1k, CT = 0.001 μF
(4)
550
500
350
kHzMin
fOSC
Initial Accuracy
RT = 5.6k, CT = 0.01 μF
(4)
17.5
17.5
kHzMin
20
20
22.5
22.5
kHzMax
RT = 2.7k, CT = 0.01 μF
(4)
34
30
kHzMin
38
38
42
46
kHzMax
(1)
Unless otherwise stated, these specifications apply for TA = TJ = 25°C. Boldface numbers apply over the rated temperature range:
LM2524D is
−40° to 85°C and LM3524D is 0°C to 70°C. VIN = 20V and fOSC = 20 kHz.
(2)
Tested limits are ensured and 100% tested in production.
(3)
Design limits are ensured (but not 100% production tested) over the indicated temperature and supply voltage range. These limits are
not used to calculate outgoing quality level.
(4)
The value of a Ct capacitor can vary with frequency. Careful selection of this capacitor must be made for high frequency operation.
Polystyrene was used in this test. NPO ceramic or polypropylene can also be used.
Copyright © 2009–2013, Texas Instruments Incorporated
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Product Folder Links: LM2524D LM3524D


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