
NXP Semiconductors
PCU9955
16-channel UFm I 2 C-bus 57 mA constant current LED driver
6. Pinning information
6.1 Pinning
REXT
A0
1
2
28 V DD
27 USDA
A1
A2
A3
LED0
LED1
LED2
LED3
3
4
5
6
7
8
9
PCU9955TW
26 USCL
25 RESET
24 V SS
23 LED15
22 LED14
21 LED13
20 LED12
V SS 10
LED4 11
LED5 12
LED6 13
LED7 14
(1)
19 V SS
18 LED11
17 LED10
16 LED9
15 LED8
002aaf094
(1) Thermal pad; connected to V SS .
Fig 2.
Pin configuration for HTSSOP28
6.2 Pin description
Table 2.
Pin description
Symbol
REXT
A0
A1
A2
A3
LED0
LED1
LED2
LED3
LED4
LED5
LED6
LED7
LED8
LED9
LED10
LED11
LED12
Pin
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
20
Type
I
I
I
I
I
O
O
O
O
O
O
O
O
O
O
O
O
O
Description
current set resistor input; resistor to ground
address input 0 [1]
address input 1 [1]
address input 2 [1]
address input 3 [1]
LED driver 0
LED driver 1
LED driver 2
LED driver 3
LED driver 4
LED driver 5
LED driver 6
LED driver 7
LED driver 8
LED driver 9
LED driver 10
LED driver 11
LED driver 12
PCU9955
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 2 — 2 October 2012
? NXP B.V. 2012. All rights reserved.
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