PCA9922BS NXP [NXP Semiconductors], PCA9922BS Datasheet - Page 14

• Manufacturer Part Number: PCA9922BS
• Description: 8-channel constant current LED driver with output error detection
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
12. Static characteristics
Table 9.
V
[1]
PCA9922_1
Product data sheet
Symbol
V
V
Control interface (OE, LE, CLK, SDI, SDO)
V
V
V
V
I
C
R
R
Current controlled outputs (LED[7:0])
I
I
LI
OL
DD
DD
I
th(det)sc
th(norm)
IH
IL
OL
OH
i
PU
pd
OL
= 5.0 V; T
OE must be held active LOW for at least the duration of the rise/fall time of the LEDn pins. This pulse width does not apply to
active LOW times for executing error detect sequences.
Static characteristics
Parameter
short-circuit detection threshold
voltage
normal mode threshold voltage
HIGH-level input voltage
LOW-level input voltage
LOW-level output voltage
HIGH-level output voltage
input leakage current
input capacitance
pull-up resistance
pull-down resistance
LOW-level output current
LOW-level output current variation
supply current
amb
= 25 C; unless otherwise specified.
8-channel constant current LED driver with output error detection
Conditions
for short-error detection;
I
120 mA
for short-error detection;
I
120 mA
I
I
V
V
OE pin
LE pin
V
V
between bits
R
R
R
R
R
Rev. 01 — 15 January 2009
O
O
OL
OL
I
I
O
O
ext
ext
ext
ext
ext
V
V
(target) = 5 mA to
(target) = 5 mA to
= V
= V
= 0.7 V; R
= 0.7 V; R
= 1 mA
= 1 mA
O
O
= open; LED[7:0] = off
= 910 ; LED[7:0] = off
= 470 ; LED[7:0] = off
= 910 ; LED[7:0] = on
= 470 ; LED[7:0] = on
= 0.7 V; R
= 0.7 V; R
DD
DD
or V
or 0 V
SS
ext
ext
ext
ext
(CLK, SDI)
= 910
= 470
= 910
= 470
[1]
Min
2.4
2.3
0.7V
-
V
-
150
100
17.5
35.4
-
-
-
-
-
-
-
0.3
1
DD
DD
0.4
Typ
2.5
-
-
-
-
-
-
1.5
300
200
19.5
38.1
0.7
3.6
6.2
3.6
6.2
3.0
1.5
PCA9922
© NXP B.V. 2009. All rights reserved.
Max
2.6
-
V
0.3V
0.4
-
+1
5
600
400
21.7
40.8
1.05
6.0
9.0
6.0
9.0
7
4
DD
+ 0.3
DD
14 of 26
Unit
V
V
V
V
V
V
pF
k
k
mA
mA
%
%
mA
mA
mA
mA
mA
A