a8430 Allegro MicroSystems, Inc., a8430 Datasheet - Page 3
a8430
Manufacturer Part Number
a8430
Description
White Led Driver Constant Current Step-up Converter
Manufacturer
Allegro MicroSystems, Inc.
Datasheet
1.A8430.pdf
(10 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
a8430EEK-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Part Number:
a8430EEKTR-T
Manufacturer:
ALLEGRO/雅丽高
Quantity:
20 000
Feedback Bias Current versus Temperature
300
250
200
150
100
2.5
2.0
1.5
1.0
0.5
20
15
10
50
White LED Driver Constant Current Step-up Converter
0
5
0
0
–50
–50
Quiescent Current versus Input Voltage
Switch Pin Voltage versus Temperature
0
2
0
0
Temperature (°C)
Temperature (°C)
4
V
IN
50
50
(V)
6
Using Typical Application Circuit (Schematic 1)
100
100
8
Operating Characteristics
150
150
10
www.allegromicro.com
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
2.15
2.10
2.05
2.00
1.95
1.90
1.25
1.20
1.15
1.10
1.05
1.00
90
85
80
75
70
65
60
Switching Frequency versus Temperature
–50
–50
Quiescent Current versus Temperature
Conversion Efficiency versus Current
0
0
0
5
Temperature (°C)
Temperature (°C)
LED Current (mA)
50
50
10
V
V
100
100
15
IN
IN
= 3 V
= 4 V
A8430
150
150
20
3