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MAX77342 Datasheet(PDF) 11 Page - Maxim Integrated Products

Part # MAX77342
Description  DC-DC Step-Up Converter
PDF  50 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  MAXIM [Maxim Integrated Products]
Direct Link  https://www.maximintegrated.com/en.html
Logo MAXIM - Maxim Integrated Products

MAX77342 Datasheet(HTML) 11 Page - Maxim Integrated Products

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Typical Operating Characteristics
(TA=+25°C,unlessotherwisenoted.)
MAX77342
1.6A Adaptive DC-DC Step-Up Converter
with High-Side Flash Driver
www.maximintegrated.com
Maxim Integrated │ 11
LED EFFICIENCY
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
4.00
3.75
3.25 3.50
3.00
2.75
55
60
65
70
75
80
85
90
95
100
50
2.50
4.25
IOUT = 400mA,
VF = 3.3V
IOUT = 800mA,
VF = 3.54V
IOUT = 1200mA,
VF = 3.72V
IOUT = 1600mA,
VF = 3.87V
IOUT = 100mA,
VF = 3.01V
DC-DC CONVERTER EFFICIENCY
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
4.00
3.75
3.25 3.50
3.00
2.75
55
60
65
70
75
80
85
90
95
100
50
2.50
4.25
IOUT = 400mA,
VF = 3.3V
IOUT = 100mA,
VF = 3.01V
IOUT = 800mA,
VF = 3.54V
IOUT = 1200mA,
VF = 3.72V
IOUT = 1600mA,
VF = 3.87V
LED EFFICIENCY
vs. FLASH CURRENT
FLASH CURRENT (mA)
1500
1300
1100
900
700
500
300
60
70
80
90
100
50
100
VIN = 3.0V
VIN = 2.5V
VIN = 3.4V
VF
VIN = 3.7V
4.60
4.80
4.20
4.40
3.80
4.00
3.40
3.60
3.20
3.00
5.00
FLASH CURRENT (mA)
1400
1200
800 1000
400 600
200
0
1600
DC-DC CONVERTER EFFICIENCY
vs. FLASH CURRENT
55
60
65
70
75
80
85
90
95
100
50
VIN = 4.2V
VIN = 3.7V
VIN = 3.4V
VIN = 3.0V
VIN = 2.5V
MAXIMUM LED FLASH CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
4.1
3.7
3.3
2.9
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
0.8
2.5
4.5
IDCDC_ILIM = 2.9A
IDCDC_ILIM = 2.5A
IDCDC_ILIM = 2.1A
IDCDC_ILIM = 1.4A
IFLED SET TO 1.6A
MEASURED PEAK INPUT CURRENT
vs. INPUT VOLTAGE
INPUT VOLTAGE (V)
3.9
3.6
2.7
3.0
3.3
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
1.4
2.4
4.2
IDCDC_ILIM = 2.9A
IDCDC_ILIM = 2.5A
IDCDC_ILIM = 2.1A
IDCDC_ILIM = 1.4A
IFLASH = 1600mA
PEAK CURRENT LIMIT
vs. TEMPERATURE
TEMPERATURE (°C)
60
35
10
-15
1.2
1.4
1.6
1.8
2.0
2.2
2.4
2.6
2.8
3.0
1.0
-40
85
IFLED = 1600mA
IDCDC_ILIM = 2.9A
IDCDC_ILIM = 2.5A
IDCDC_ILIM = 2.1A
IDCDC_ILIM = 1.4A
SWITCHING FREQUENCY
vs. TEMPERATURE
TEMPERATURE (°C)
60
35
10
-15
1
2
3
4
5
0
-40
85
VIN = 3.4V/3.1V/2.5V
VIN = 3.7V
VIN = 4.2V
IFLED = 1600mA



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