LDS8620 IXYS Corporation, LDS8620 Datasheet - Page 3

• Manufacturer Part Number: LDS8620
• Description: Lds8620 200 Ma, Dual Output Led Flash/lamp Driver
• Manufacturer: IXYS Corporation

LDS8620
RECOMMENDED EN/SET TIMING
For 2.5 VIN 5.5V, over full ambient temperature range -40 to +85ºC.
REGISTER CONFIGURATION AND PROGRAMMING
Table 1. Register Address and Data
Note: *) If Global current setting register Reg2 is used, registers Reg3 and Reg4 should be empty, and vice versa If registers Reg3and Reg4 are
used, Reg2 should be empty to prevent data interference.
Table 2. Reg1 Code
Note: If bits Bit0 – Bit1 are set to zero, the corresponding LED bank is disabled.
© 2009 IXYS Corp.
Characteristics subject to change without notice
pulses
t
t
Data
RESETDELAY
Register
Symbol
DATADELAY
0
1
2
3
t
REG1
REG2
REG3
REG4
REG5
SETUP
t
t
t
OFF
LO
HI
Reg1 Bit
1
0
1
1
0
Address Pulses
EN/SET Delay High to ADDRESS
EN/SET setup from shutdown
EN/SET low time to shutdown
EN/SET program high time
EN/SET program low time
0
0
1
0
1
EN/SET Delay to DATA
1
2
3
4
6
Figure 2. EN/SET multi flash timing diagram (see description at p.8)
LED B
Off
On
On
Of
Name
Figure 1. EN/SET One Wire Addressable Timing Diagram
LED state
Global Current Setting*
LED A Current Setting
LED B Current Setting
Output Configuration
LED A
Return Lockout
Description
Off
On
Off
On
Conditions
3
Bits
2
6
6
6
1
LED B Enable
Min
500
0.2
0.2
1.5
10
2
Bit 1
See Table 3 for values
DATA pattern
Typ
Doc. No. 8620DS, Rev. N1.1
LED A Enable
Max
100
100
100
RTLKO
Bit 0
Units
ms
ms
μ s
μ s
μ s
μ s