MAX8830EWE Просмотр технического описания (PDF) - Maxim Integrated
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MAX8830EWE Datasheet PDF : 16 Pages
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LED Light Management IC in
2.5mm x 2.5mm UCSP
Typical Operating Characteristics (continued)
(VIN = 3.6V, VOUT = 3.8V, VDD = 3.0V, circuit of Figure 1, TA = +25°C, unless otherwise noted.)
OSCILLATOR FREQUENCY
vs. INPUT VOLTAGE
1.20
1.15
1.10
1.05
1.00
0.95
0.90
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
1.0
0.8
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
-1.0
-40
LED CURRENT ACCURACY
vs. TEMPERATURE
ILED = 10mA
-15
10
35
60
85
TEMPERATURE (°C)
OUTPUT VOLTAGE vs. TEMPERATURE
3.82
MAX8830 toc09 5.07
3.81
5.06
3.80
5.05
3.79
VOUT = 3.8V
5.04
3.78
5.03
3.77
5.02
3.76
5.01
3.75
VOUT = 5V
5.00
3.74
4.99
3.73
4.98
3.72
4.97
-40 -25 -15 0 10 25 35 50 60 70 85
TEMPERATURE (°C)
FLED CURRENT-REGULATOR
DROPOUT VOLTAGE vs. FLED CURRENT
200
180
160
140
120
100
80
60
40
20
0
0
50
100
150
200
FLED CURRENT (mA)
LED CURRENT ACCURACY AND MATCHING
vs. INPUT VOLTAGE (ILED_ = 10mA)
0.5
ILED3
0
ILED1
-0.5
ILED4
-1.0
-1.5
ILED2
-2.0
-2.5
2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5
INPUT VOLTAGE (V)
LED_ CURRENT-REGULATOR
DROPOUT VOLTAGE vs. LED_ CURRENT
50
45
40
35
30
25
20
15
10
5
0
0
2
4
6
8
10
LED_ CURRENT (mA)
STARTUP WAVEFORMS
MAX8830 toc14
5V/div
VIN
VIN
VOUT = 5V
5V/div
VOUT
2V/div VOUT = 3V
VLX
VCOMP
20.0μs/div
SOFT-START
100ms/div
MAX8830 toc15
2V/div
500mV/div
STEP-UP DC/DC IN SUPPLY CURRENT
12
VIN = 3.6V, TOKO DE2812C-1098AS-100M
10μH INDUCTOR
10
8
6
4
500mV/div
2
0
3.5
4.0
4.5
5.0
5.5
VOUT (V)
6 _______________________________________________________________________________________
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