NCP5623DTBR2G ON Semiconductor, NCP5623DTBR2G Datasheet - Page 8

• Manufacturer Part Number: NCP5623DTBR2G
• Description: IC LED DRIVER RGB 14-TSSOP
• Manufacturer: ON Semiconductor
• Type: RGB LED Driverr

Specifications of NCP5623DTBR2G

• Topology: PWM, Switched Capacitor (Charge Pump)
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Primary: Backlight, Flash/Torch
• Type - Secondary: RGB, White LED
• Frequency: 800kHz ~ 1.2kHz
• Voltage - Supply: 2.7 V ~ 5.5 V
• Voltage - Output: 4.4 V ~ 5.7 V
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 90mA
• Internal Switch(s): Yes
• Efficiency: 94%
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Supply Current: 350 uA
• Maximum Power Dissipation: 235 mW
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

the start and end output current range: since the ILED value
is encoded in the Bits[4:0] binary scale, a maximum of 31
steps is achievable during a gradual dimming operation.
the chip according to the equation:
step was 5 and the new one is 15, then we will have 10 steps
to run between the actual location to the end value. If the
timing was set at 16 ms, the total gradual dimming sequence
will be 160 ms.
NOTE:
Table 3. Output Current Programmed Value (ILED = F(Step))
Table 2. Basic Programming Sequences
I2C Address
The number of step for a given sequence, depends upon
The number of steps will be automatically recalculated by
Nstep = | existing step position − new step position |
As an example, assuming the previously programmed
0 / $00
1 / $01
2 / $02
3 / $03
4 / $04
5 / $05
6 / $06
7 / $07
8 / $08
Step
$70
$70
$70
$70
$70
$70
$70
$70
The table assumes I
COMMAND Bits[7:0]
ILED (mA)
0.92
0.95
0.98
1.02
1.06
1.10
1.15
1.20
000X XXXX
0010 0000
0100 0000
0110 0000
1000 0000
1010 0000
1100 0000
0
0011 1111
0101 1111
1001 1111
1011 1111
1101 1111
1110 0001
0111 1111
1111 1111
REF
= 11.5 mA
10 / $0A
12 / $0C
13 / $0D
14 / $0E
11 / $0B
15 / $0F
16 / $10
17 / $11
9 / $09
Step
Set Up the Gradual Dimming
Set Up the IEND Downward
time and run the sequence
Set Up the GREEN PWM
Set Up the IEND Upward
Set Up the ILED current
Set Up the BLUE PWM
Set Up the RED PWM
System Shut Down
Operation
ILED (mA)
1.25
1.31
1.38
1.45
1.53
1.62
1.72
1.84
1.97
http://onsemi.com
8
Upward or Downward), one shall send the appropriate
register before to activate the sequence as depicted below:
1010 1111 ³ 1110 0011 ³ select an UPWARD sequence
with
(I
sequence with 32 ms/step, the end ILED current being
(I
26 / $1A
18 / $12
19 / $13
20 / $14
21 / $15
22 / $16
23 / $17
24 / $18
25 / $19
REF
REF
Step
To select the direction of the gradual dimming (either
1100 0001 ³ 1110 0100 ³ select the DOWNWARD
Bits[4:0] contain the ILED value as defined by the I
*2400)/(31−15)
*2400)/(31−1).
24
ms/step,
ILED (mA)
Bits[4:0] contain the PWM value
Bits[4:0] contain the PWM value
Bits[4:0] contain the PWM value
Bits[4:0] contain the IEND value
Bits[4:0] contain the IEND value
Bits[4:0] contain the TIME value
2.12
2.30
2.50
2.76
3.06
3.45
3.94
4.60
5.52
Bits[4:0] are irrelevant
the
GREENPWM
ILED register
BLUEPWM
DWNWRD
REDPWM
UPWARD
GRAD
Note
end
28 / $1C
29 / $1D
30 / $1E
31 / $1F
27 $1B
Step
ILED
current
ILED (mA)
13.80
27.60
27.60
REF
6.90
9.20
value
being