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LM3524D Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce LM3524D
Description  LM2524D/LM3524D Regulating Pulse Width Modulator
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

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LM2524D, LM3524D
SNVS766E – JUNE 2009 – REVISED MAY 2013
www.ti.com
Electrical Characteristics
(1) (continued)
Symbol
Parameter
Conditions
LM2524D
LM3524D
Units
Typ
Tested
Design
Typ
Tested
Design
Limit(2)
Limit(3)
Limit(2)
Limit(3)
ΔfOSC
Freq. Change with VIN
VIN = 8 to 40V
0.5
1
0.5
1.0
%Max
ΔfOSC
Freq. Change with Temp.
TA = −55°C to +125°C
5
5
%
at 20 kHz RT = 5.6k,
CT = 0.01 μF
VOSC
Output Amplitude (Pin 3)
RT = 5.6k, CT = 0.01 μF
3
2.4
3
2.4
VMin
(5)
tPW
Output Pulse Width (Pin 3) RT = 5.6k, CT = 0.01 μF
0.5
1.5
0.5
1.5
μsMax
Sawtooth Peak Voltage
RT = 5.6k, CT = 0.01 μF
3.4
3.6
3.8
3.8
VMax
Sawtooth Valley Voltage
RT = 5.6k, CT = 0.01 μF
1.1
0.8
0.6
0.6
VMin
ERROR-AMP SECTION
VIO
Input Offset Voltage
VCM = 2.5V
2
8
10
2
10
mVMax
IIB
Input Bias Current
VCM = 2.5V
1
8
10
1
10
μAMax
IIO
Input Offset Current
VCM = 2.5V
0.5
1.0
1
0.5
1
μAMax
ICOSI
Compensation Current
VIN(I) − VIN(NI) = 150 mV
65
65
μAMin
(Sink)
95
95
125
125
μAMax
ICOSO
Compensation Current
VIN(NI) − VIN(I) = 150 mV
−125
−125
μAMin
(Source)
−95
−95
−65
−65
μAMax
AVOL
Open Loop Gain
RL = ∞, VCM = 2.5 V
80
74
60
80
70
60
dBMin
VCMR
Common Mode Input
1.5
1.4
1.5
VMin
Voltage Range
5.5
5.4
5.5
VMax
CMRR
Common Mode Rejection
90
80
90
80
dBMin
Ratio
GBW
Unity Gain Bandwidth
AVOL = 0 dB, VCM = 2.5V
3
2
MHz
VO
Output Voltage Swing
RL = ∞
0.5
0.5
VMin
5.5
5.5
VMax
PSRR
Power Supply Rejection
VIN = 8 to 40V
80
70
80
65
dbMin
Ratio
COMPARATOR SECTION
Minimum Duty Cycle
Pin 9 = 0.8V,
tON/tOSC
0
0
0
0
%Max
[RT = 5.6k, CT = 0.01 μF]
Maximum Duty Cycle
Pin 9 = 3.9V,
tON/tOSC
49
45
49
45
%Min
[RT = 5.6k, CT = 0.01 μF]
Maximum Duty Cycle
Pin 9 = 3.9V,
tON/tOSC
44
35
44
35
%Min
[RT = 1k, CT = 0.001 μF]
VCOMPZ
Input Threshold
Zero Duty Cycle
1
1
V
(Pin 9)
VCOMPM
Input Threshold (Pin 9)
Maximum Duty Cycle
3.5
3.5
V
IIB
Input Bias Current
−1
−1
μA
CURRENT LIMIT SECTION
VSEN
Sense Voltage
V(Pin 2) − V(Pin 1) ≥ 150 mV
180
180
mVMin
200
200
220
220
mVMax
TC-Vsense
Sense Voltage T.C.
0.2
0.2
mV/°C
Common Mode Voltage
V5 − V4 = 300 mV
−0.7
−0.7
VMin
Range
1
1
VMax
(5)
OSC amplitude is measured open circuit. Available current is limited to 1 mA so care must be exercised to limit capacitive loading of fast
pulses.
4
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Product Folder Links: LM2524D LM3524D


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