NCP1840Q8A6MNG ON Semiconductor, NCP1840Q8A6MNG Datasheet - Page 11

• Manufacturer Part Number: NCP1840Q8A6MNG
• Description: LED Lighting Drivers PRGRM MULTI LED DRIVER
• Manufacturer: ON Semiconductor

Specifications of NCP1840Q8A6MNG

• Product Category: LED Lighting Drivers
• Rohs: yes
• Input Voltage: 3 V to 5.5 V
• Operating Frequency: 400 kHz
• Maximum Supply Current: 0.75 mA
• Output Current: 30 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-20
• Minimum Operating Temperature: - 40 C

Current Level Registers
NCP1840 can be individually programmed by loading the
appropriate data into the Current Level Register for each
channel. There are 32 different current levels per channel
REGISTER ADDRESS MAP
CURRENT LEVEL REGISTER DESCRIPTION
The current through each of the 8 channels on the
A4
D7
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A3
D6
Address − Binary
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
A2
D5
0
0
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Data − Binary
A1
D4
1
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
A0
D3
0
1
0
1
0
1
0
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
D2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
Address − Hex
Address − Hex
D1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
10
11
A
B
C
D
E
F
http://onsemi.com
D0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
11
that are implemented as a logarithmically scaled percentage
of the maximum current, dictated by an external resistor
R
found in the following table.
LED3 PWM Register
LED4 PWM Register
LED5 PWM Register
LED6 PWM Register
LED7 PWM Register
LED8 PWM Register
Output Control Register
Main Status Register
BIAS
Data − Hex
. A description of the 32 different current levels can be
0A
0B
0C
0D
0E
0F
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
Percentage of Maximum Current
Function
Function
10.0000%
11.2333%
12.6000%
14.1333%
15.8667%
17.8000%
19.9667%
22.4000%
25.1333%
28.2000%
31.6333%
35.4667%
39.8000%
2.8333%
3.1667%
3.5333%
3.9667%
4.4667%
5.0000%
5.6333%
6.3000%
7.0667%
7.9333%
8.9000%