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MAX1582 Fiches technique(PDF) 2 Page - Maxim Integrated Products

No de pièce MAX1582
Description  High-Efficiency, 26V Step-Up Converter for White LED Main and Subdisplay Backlighting
Download  10 Pages
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Fabricant  MAXIM [Maxim Integrated Products]
Site Internet  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX1582 Fiches technique(HTML) 2 Page - Maxim Integrated Products

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High-Efficiency, 26V Step-Up Converter
for White LED Main and Subdisplay Backlighting
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VV+ = +3.0V, VOUT1 = 20V, L1 = 22µH, COUT = 0.1µF, CCOMP = 0.022µF, RSENSE = 7.5
Ω, VCTRL = +1.5V, EN1 = EN2 = V+, TA =
0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
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.
V+, VP, CTRL to GND............................................-0.3V to +6.0V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT1 to GND ...................................................-0.3V to +30V
OUT2 to GND .........................................................-0.3V to +14V
COMP, CS, EN1, EN2 to GND ....................-0.3V to (VV+ + 0.3V)
ILX ....................................................................................................1ARMS
Continuous Power Dissipation (TA = +70
°C)
12-Pin Thin QFN (derate 16.9mW/
°C above +70°C) ....1349mW
16-Pin UCSP (derate 6.5mW/
°C above +70°C)..............518mW
Operating Temperature Range ...........................-40
°C to +85°C
Junction Temperature ......................................................+150
°C
Storage Temperature Range .............................-65
°C to +150°C
Lead Temperature (soldering, 10s) .................................+300
°C
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Supply Voltage
2.6
5.5
V
Undervoltage Lockout (UVLO)
Threshold
V+ rising or falling
2.10
2.38
2.55
V
UVLO Hysteresis
40
mV
Quiescent Current
No switching, VCTRL = VCS = +0.25V
0.40
0.56
mA
TA = +25
°C0.01
1
Shutdown Supply Current
EN1 = EN2 = GND, OUT1 = V+
TA = +85
°C0.1
µA
Overvoltage Lockout (OVLO)
Threshold
26
27
29
V
OVLO Hysteresis
2V
VOUT1 = +26V, EN1 = EN2 = V+
20
40
65
TA = +25
°C0.01
1
OUT1 Input Bias Current
OUT1 = V+, EN1 = EN2 = GND
TA = +85
°C0.05
µA
Output Voltage Range
(Note 2)
(VV+ -
VDIODE)
25.5
V
ERROR AMPLIFIER
CTRL to CS Regulation
VCTRL = +1.0V, VV+ = +2.6V to +5.5V
0.095
0.100
0.106
V
TA = +25
°C0.01
1
CS Input Bias Current
VCS = VCTRL / 10
TA = +85
°C1
µA
CTRL Input Resistance
0 < VCTRL < +1V
290
500
780
k
CS to COMP Transconductance
VCOMP = +1.0V
32
50
82
µS
OSCILLATOR
Operating Frequency
0.80
1.0
1.25
MHz
PWM mode
12
Minimum Duty Cycle
Pulse skipping
0
%
Maximum Duty Cycle
CTRL = V+, CS = GND
91
94
%


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