MAX5070AASA Ver la hoja de datos (PDF) - Maxim Integrated
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MAX5070AASA Datasheet PDF : 22 Pages
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High-Performance, Single-Ended, Current-Mode
PWM Controllers
ABSOLUTE MAXIMUM RATINGS
VCC (Low-Impedance Source) to GND ..................-0.3V to +30V
VCC (ICC < 30mA).....................................................Self Limiting
OUT to GND ...............................................-0.3V to (VCC + 0.3V)
OUT Current.............................................................±1A for 10µs
FB, SYNC, COMP, CS, RT/CT, VREF to GND ...........-0.3V to +6V
COMP Sink Current (MAX5070)..........................................10mA
Continuous Power Dissipation (TA = +70°C)
8-Pin µMAX (derate 4.5mW/°C above +70°C) .............362mW
8-Pin SO (derate 5.9mW/°C above +70°C)...............470.6mW
Operating Temperature Range (Automotive) ....-40°C to +125°C
Maximum Junction Temperature .....................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°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 in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VCC = +15V, RT = 10kΩ, CT = 3.3nF, VVREF = OPEN, CVREF = 0.1µF, COMP = OPEN, VFB = 2V, CS = GND, TA = -40°C to +85°C,
unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
REFERENCE
Output Voltage
Line Regulation
Load Regulation
Total Output Variation
VVREF
∆VLINE
∆VLOAD
VREFT
TA = +25°C, IVREF = 1mA
12V < VCC < 25V, IVREF = 1mA
1mA < IVREF < 20mA
1mA < IVREF < 20mA, 12V < VCC < 25V
Reference Output-Noise Voltage
Reference Output Short Circuit
VNOISE
IS_SC
10Hz < f < 10kHz, TA = +25°C
VVREF = 0V
OSCILLATOR
Initial Accuracy
TA = +25°C
Voltage Stability
Temp Stability
RT/CT Voltage Ramp (P-P)
VRAMP
12V < VCC < 25V
-40°C < TA < +85°C
RT/CT Voltage Ramp Valley
Discharge Current
VRAMP_VALLEY
IDIS
VRT/CT = 2V, TA = +25°C
Frequency Range
fOSC
ERROR AMPLIFIER (MAX5070A/MAX5070B)
FB Input Voltage
FB Input Bias Current
VFB
IB(FB)
FB shorted to COMP
Open-Loop Voltage Gain
AVOL
2V ≤ VCOMP ≤ 4V
Unity-Gain Bandwidth
fGBW
Power-Supply Rejection Ratio
COMP Sink Current
PSRR
ISINK
12V ≤ VCC ≤ 25V (Note 2)
VFB = 2.7V, VCOMP = 1.1V
COMP Source Current
COMP Output High Voltage
COMP Output Low Voltage
CURRENT-SENSE AMPLIFIER
ISOURCE
VCOMPH
VCOMPL
VFB = 2.3V, VCOMP = 5V
VFB = 2.3V, RCOMP = 15kΩ to GND
VFB = 2.7V, RCOMP = 15kΩ to VREF
Gain
ACS
(Notes 3, 4)
Maximum Current-Sense Signal
VCS_MAX
MAX5070A/B (Note 3)
VCOMP = 5V, MAX5071_
MIN TYP MAX UNITS
4.950 5.000 5.050
V
0.4
4
mV
6
25
mV
4.9
5.1
V
50
µV
-30
-100 -180
mA
51
54
57
kHz
0.2
0.5
%
0.5
%
1.7
V
1.1
V
7.9
8.3
8.7
mA
20
1000 kHz
2.465
60
2
-0.5
5
2.5
-0.01
100
1
80
6
-1.2
5.8
0.1
2.535
-0.1
-1.8
1.1
V
µA
dB
MHz
dB
mA
mA
V
V
2.85
3
3.26
V/V
0.95
1
1.05
V
0.84 0.935 1.03
2 _______________________________________________________________________________________
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