PCA9922BS NXP [NXP Semiconductors], PCA9922BS Datasheet - Page 5

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

NXP Semiconductors
PCA9922_1
Product data sheet
6.2 Pin description
Table 3.
I = input; O = output.
[1]
Symbol
V
SDI
CLK
LE/DM1
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
OE/DM2
SDO
R_EXT
V
n.c.
SS
DD
HVQFN20 package die supply ground is connected to both V
be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board
level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad
on the board and for proper heat conduction through the board, thermal vias need to be incorporated in the
PCB in the thermal pad region.
Pin description
Pin
DIP16,
TSSOP16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
-
8-channel constant current LED driver with output error detection
Rev. 01 — 15 January 2009
HVQFN20
19
20
1
2
3
4
5
6
10
11
12
13
14
15
16
17
7, 8, 9, 18
[1]
Type
power supply
I
I
I
O
O
O
O
O
O
O
O
I
O
analog input
power supply
-
Description
supply ground
serial data in
serial data clock used to shift data on SDI
into the shift register
latch enable with internal pull-down
resistor; active HIGH signal used to
capture data in the shift register to present
to the outputs
Detection Mode 1
constant current LED output driver 0
constant current LED output driver 1
constant current LED output driver 2
constant current LED output driver 3
constant current LED output driver 4
constant current LED output driver 5
constant current LED output driver 6
constant current LED output driver 7
output enable with internal pull-up resistor;
active LOW signal used to allow data
captured in the latch to be presented to
the constant current outputs
Detection Mode 2
serial data output
external resistor input
supply voltage
not connected
SS
pin and exposed center pad. V
PCA9922
© NXP B.V. 2009. All rights reserved.
SS
pin must
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