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MAX1540 Fiches technique(PDF) 3 Page - Maxim Integrated Products

No de pièce MAX1540
Description  Dual Step-Down Controllers with Saturation Protection, Dynamic Output, and Linear Regulator
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1540 Fiches technique(HTML) 3 Page - Maxim Integrated Products

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Dual Step-Down Controllers with Saturation
Protection, Dynamic Output, and Linear Regulator
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V+ = 15V, VCC = VDD = ON1 = ON2 = 5V, SKIP = GND, LDOIN (MAX1541) = V+, TA = 0°C to +85°C, unless otherwise noted. Typical
values are at TA = +25
°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Standby Supply Current
(VDD, MAX1541 Only)
ON1 = ON2 = GND, VLDOON = V+ = 28V
<1
5
µA
MAX1540: ON1 = ON2 = GND,
LDOON = V+ = 28V, VCC = 0 or 5V
105
Standby Supply Current (V+)
MAX1541: ON1 = ON2 = GND,
LDOON = V+ = 28V, VCC = VDD = 0 or 5V
<1
5
µA
Standby Supply Current
(LDOIN, MAX1541 Only)
ON1 = ON2 = GND, VLDOON = V+ = 28V
100
µA
Shutdown Supply Current (VCC)
ON1 = ON2 = LDOON = GND
<1
5
µA
Shutdown Supply Current
(VDD, MAX1541 Only)
ON1 = ON2 = LDOON = GND
<1
5
µA
MAX1540: ON1 = ON2 = LDOON = GND,
V+ = 28V, VCC = 0 or 5V
415
Shutdown Supply Current (V+)
MAX1541: ON1 = ON2 = LDOON = GND,
V+ = 28V, VCC = VDD = 0 or 5V
<1
5
µA
Shutdown Supply Current
(LDOIN, MAX1541 Only)
LDOON = GND
4
10
µA
PWM CONTROLLERS
FB1 = GND
1.782
1.80
1.818
VOUT1
Preset output,
V+ = 5.5V to 28V,
SKIP = VCC
FB1 = VCC
1.188
1.20
1.212
MAX1540 Main Output-Voltage
Accuracy (OUT1) (Note 2)
VFB1
Adjustable output, V+ = 5.5V to 28V,
SKIP = VCC
0.693
0.70
0.707
V
FB2 = GND
2.475
2.50
2.525
VOUT2
Preset output,
V+ = 5.5V to 28V,
SKIP = VCC
FB2 = VCC
1.485
1.50
1.515
MAX1540 Secondary Output-
Voltage Accuracy (OUT2)
(Note 2)
VFB2
Adjustable output, V+ = 5.5V to 28V,
SKIP = VCC
0.693
0.70
0.707
V
MAX1541 Main Feedback-
Voltage Accuracy (FB1)
VFB1
V+ = 4.5V to 28V,
SKIP = VCC
REFIN1 = 0.35 x REF
0.693
0.70
0.707
V
FB2 = GND
2.475
2.50
2.525
VOUT2
Preset output,
V+ = 4.5V to 28V,
SKIP = VCC
FB2 = VCC
1.782
1.80
1.818
MAX1541 Secondary Output-
Voltage Accuracy (OUT2)
(Note 2)
VFB2
Adjustable output, V+ = 4.5V to 28V,
SKIP = VCC
0.693
0.70
0.707
V
Load-Regulation Error
ILOAD = 0 to 3A, SKIP = VCC
0.1
%
Line-Regulation Error
VCC = 4.5V to 5.5V, V+ = 4.5V to 28V
0.25
%
FB_ Input Bias Current
IFB_
-0.1
+0.1
µA
Output Adjust Range
0.7
5.5
V


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