AK7864A Datasheet, PDF (9/13 Pages) Asahi Kasei Microsystems – 3 channel LED driver with Charge Pump

4. LEDD block, switching characteristics
[AK7864A]
EN
CONTR/G/B
(high setting)
0.7VDD
ts
0.7VDD
0.3VDD
th
0.7VDD
CONTR/G/B
(low setting)
LED current
tcl
th
0.3VDD
tcl
tlon
90%
10%
tloff
(VDD=3.135~3.465V, Ta=070C, unless otherwise specified)
No.
Item
min. typ. max.
Unit
Conditions
tlon
LED current rise time
10
s
tloff
LED current fall time
10
s
ts
Reset valid setup time
1
s
CONTR/G/B
LEDB_EN(0.3AVDD):standard
to
EN(0.3VDD)
th
Count up setup time
1
s
EN(0.7VDD)
LEDB_EN(0.7AVDD):standard
to
CONTR/G/B
tcl
Current set clearing
1
s
CONT_R/G/B:0.7VDD standard
MS1336 - E - 00
9
2012/01