NCP1840Q8A6MNG ON Semiconductor, NCP1840Q8A6MNG Datasheet - Page 3

• 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

PIN DESCRIPTION
16, 17, 19, 20
2−5, 11−14
6, 15, 21
Pin
10
18
1
7
8
9
Pin 10− R
Pin 15− GND
Pin 7− DV
Pin 9− SDA
Pin 6− GND
Pin 8− SCL
C2−, C1−, C2+,
LED1 − LED8
Name
DV
R
CPO
GND
V
SDA
BIAS
SCL
C1+
BIAS
BAT
CC
CC
Bandgap & Bias
Logic Serial
Control Logic
Interface
Oscillator
Charge pump output used as power supply to the LEDs. Should have a 2.2 mF ceramic
capacitor (X5R or X7R) connected to ground.
Current sink outputs for driving LEDs. Output current level and PWM duty cycle can be
programmed through the I
Ground connection (Pin 21 is the exposed paddle and should be connected to ground)
Supply input for digital circuitry. Should have a 1 mF ceramic capacitor (X5R or X7R)
connected to ground.
I
I
An external resistor connected to ground defines the full−scale current for the LED outputs.
Charge pump flying capacitor connections. A 1 mF ceramic capacitor (X5R or X7R) should be
connected from C1+ to C1− and C2+ to C2−.
Supply input for the charge pump and analog circuitry. Should have a 2.2 mF low ESR
ceramic capacitor connected to ground.
Registers
Generator
2
2
C clock input
C serial data input/output
Over Temp Detect
Figure 3. NCP1840 Block Diagram
POR
http://onsemi.com
3
2
C interface.
Charge Pump
Output DAC
Output DAC
Output DAC
Output DAC
Output DAC
Output DAC
Output DAC
Output DAC
Function
Pin 1− CPO
Pin 2− LED1
Pin 3− LED2
Pin 4− LED3
Pin 5− LED4
Pin 11− LED5
Pin 12− LED6
Pin 13− LED7
Pin 14− LED8