om5448 Hendon Semiconductors, om5448 Datasheet - Page 10

• Manufacturer Part Number: om5448
• Description: Low Voltage Led Driver And Boost Converter
• Manufacturer: Hendon Semiconductors

2007 May 28, Revision 1.0
S E T I R e si st a n c e (ko h ms)
40
35
30
25
20
S E T I R e si st a n c e (ko h ms)
15
10
5
0
Fig.8 SETI resistance against LED current for both amber and white LEDs (1.2 V, circuit figure 4).
250
200
5
150
100
50
0
5
Fig.9 SETI resistance against LED current for a white LED (2.4 V, circuit figure 4).
10
10
100uH 1.6ohms Amber
100uH 1.6ohms Whit e
Out put Curre nt vs SE TI re sist or for O M5 4 48 wit h 1.2 V supply
15
Out put Curre nt vs SE TI re sist or for O M5 4 48 wit h 2.4 V supply
15
100uH 1.6ohms Whit e
20
20
L E D C u rr e n t (mA )
100uH 0.7ohms Amber
100uH 0.7ohms Whit e
L E D C u r r e n t (mA )
10
25
100uH 0.7ohms Whit e
25
30
30
220uH 1.6ohms Amber
220uH 1.6ohms Whit e
Low Voltage LED Driver
220uH 1.6ohms White
and Boost Converter
35
35
40
Product Specification
OM5448
40
45
45