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MAX1582 Fiches technique(PDF) 4 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) 4 Page - Maxim Integrated Products

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background image
40
60
50
80
70
90
100
010
515
20
EFFICIENCY vs. LED CURRENT
(vs. NUMBER of LEDs)
LED CURRENT (mA)
2 LEDs
4 LEDs
6 LEDs
40
60
50
80
70
90
100
010
515
20
EFFICIENCY vs. LED CURRENT
(vs. INPUT VOLTAGE)
LED CURRENT (mA)
4.2 VIN
3.6 VIN
2.7 VIN
40
60
50
80
70
90
100
010
515
20
EFFICIENCY vs. LED CURRENT
(vs. INDUCTANCE)
LED CURRENT (mA)
10
µH
4.7
µH
47
µH
22
µH
0
10
5
15
30
35
25
20
40
0
10152025
5
3035404550
INPUT RIPPLE vs. INDUCTANCE
INDUCTANCE (
µH)
0
1
2
4
5
3
6
0
2345
1
6
789
10
INPUT RIPPLE SPECTRUM
FREQUENCY (MHz)
0
5
10
20
15
25
0
20304050
10
60 70 80 90 100
LED CURRENT vs. DIRECT-PWM
DIMMING DUTY CYCLE
DIRECT-PWM DIMMING DUTY CYCLE (%)
VCTRL = SQUARE WAVE
200Hz < FREQ < 200kHz
Typical Operating Characteristics
(See the Typical Applications Circuit, VV+ = VVP = 3.6V, ILED = 15mA, L1 = 22µH, COUT1 = 0.1µF, CCOMP = 0.022µF, RSENSE = 7.5
Ω,
VCTRL = 1.5V, 4 LEDs, TA = +25°C, unless otherwise noted.)
High-Efficiency, 26V Step-Up Converter
for White LED Main and Subdisplay Backlighting
4
_______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(VV+ = +3.0V, VOUT1 = +20V, L1 = 22µH, COUT = 0.1µF, CCOMP = 0.022µF, RSENSE = 7.5
Ω, VCTRL = +1.5V, EN1 = EN2 = V+, TA =
-40°C to +85°C, unless otherwise noted.) (Notes 1, 3)
PARAMETER
CONDITIONS
MIN
MAX
UNITS
Maximum Duty Cycle
CTRL = V+, CS = GND
91
%
N-CHANNEL SWITCH
LX On-Resistance
2.25
LX Current Limit
Duty cycle = 90%
450
950
mA
Note 1: Limits are 100% production tested at TA = +25°C for UCSP parts. Limits over the entire operating temperature range are
guaranteed by design and characterization but are not production tested.
Note 2: The minimum output voltage is the input voltage minus the forward voltage drop of the Schottky diode:
VOUT(MIN) = VV+ - VDIODE
Note 3: Specifications to -40°C are guaranteed by design and not production tested.


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Numéro de composants électroniques

No de pièceDescriptionHtml ViewFabricant
MAX1561 High-Efficiency 26V Step-Up Converters for Two to Six White LEDs 1  2  3  4  5  More Maxim Integrated Products
LM3500 Synchronous Step-up DC/DC Converter for White LED 1  2  3  4  5  More National Semiconductor (TI)
LM3557 Step-Up Converter for White LED Applications 1  2  3  4  5  More National Semiconductor (TI)
MAX1576 480mA White LED 1x/1.5x/2x Charge Pump for Backlighting and Camera Flash 1  2  3  4  5  More Maxim Integrated Products
LM3557 Step-Up Converter for White LED Applications 1  2  3  4  5  More National Semiconductor (TI)
TB62731FUG Step-up DC-DC Converter for White LED Driver 1  2  3  4  5  More Marktech Corporate
LM3502 Step-Up Converter for White LED Applications 1  2  3  4  5  More National Semiconductor (TI)
LM3501 Synchronous Step-up DC/DC Converter for White LED Applications 1  2  3  4  5  More National Semiconductor (TI)
AAT2806 Dual High Efficiency Charge Pump for White LED AND Flash Applications 1  2  3  4  5  More Advanced Analogic Technologies

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