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MAX1561 Fiches technique(PDF) 2 Page - Maxim Integrated Products

No de pièce MAX1561
Description  High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs
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

MAX1561 Fiches technique(HTML) 2 Page - Maxim Integrated Products

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High-Efficiency, 26V Step-Up Converters
for Two to Six White LEDs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VIN = 3V, VOUT = 20V, COUT = 0.1µF, CCOMP = 0.15µF, RSENSE = 7.5
Ω, VCTRL = 1.5V, Figure 1, TA = 0°C to +85°C, unless other-
wise noted. Typical values are at TA = +25°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.
IN to GND .................................................................-0.3V to +6V
PGND to GND .......................................................-0.3V to +0.3V
LX, OUT to GND .....................................................-0.3V to +30V
CTRL to GND...................-0.3V to the lower of +6V or (VIN + 2V)
COMP, CS to GND.........................................-0.3 to (VIN + 0.3V)
ILX.............................................................................................1A
Continuous Power Dissipation (TA = +70°C)
3mm x 3mm 8-Pin TDFN
(derate 24.4mW/°C above +70°C) .............................1950mW
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
UVLO Threshold
VIN rising or falling
2.10
2.38
2.55
V
UVLO Hysteresis
40
mV
Quiescent Current
No switching
0.38
0.55
mA
TA = +25
°C
0.3
2
Shutdown Supply Current
CTRL = GND, VOUT = VIN
TA = +85
°C1
µA
OVLO Threshold
VOUT rising
26
27
29
V
OVLO Hysteresis
2V
VOUT = 26V, VCTRL > 0.24V
10
20
30
OUT Input Bias Current
VOUT = VIN, CTRL = GND
0.01
1
µA
Output Voltage Range
(Note 1)
(VIN - VD1)
25.5
V
ERROR AMPLIFIER
CTRL to CS Regulation
VCTRL = 1V, VIN = 2.6V to 5.5V
0.095
0.100
0.105
V
TA = +25
°C
0.01
1
CS Input Bias Current
VCS = VCTRL/10
TA = +85
°C
0.03
µA
CTRL Input Resistance
VCTRL
≤ 1.0V
290
500
780
k
CTRL Dual-Mode Threshold
100
170
240
mV
CTRL Dual-Mode Hysteresis
5mV
MAX1561
6.5
8.2
10.5
CTRL Shutdown Enable Delay
(Note 2)
MAX1599
13.6
16.4
21.0
ms
CS-to-COMP Transconductance
VCOMP = 1.0V
32
50
82
µS
OSCILLATOR
MAX1561
0.80
1.0
1.25
Operating Frequency
MAX1599
0.4
0.5
0.6
MHz
PWM mode
12
Minimum Duty Cycle
Pulse skipping
0
%
Maximum Duty Cycle
CTRL = IN, CS = GND
91
94
%


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