CAT4109V-GT2 ON Semiconductor, CAT4109V-GT2 Datasheet - Page 4

• Manufacturer Part Number: CAT4109V-GT2
• Description: IC LED DRIVER RGB 16-SOIC
• Manufacturer: ON Semiconductor
• Type: RGB LED Driverr

Specifications of CAT4109V-GT2

• Constant Current: Yes
• Topology: PWM
• Number Of Outputs: 3
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: RGB
• Voltage - Supply: 3 V ~ 5.5 V
• Voltage - Output: 25V
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (3.9mm Width)
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 175mA
• Internal Switch(s): No
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: SOIC
• Pin Count: 16
• Mounting: Surface Mount
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 5.5V
• Number Of Digits: 3
• Low Level Output Current: 175 mA
• High Level Output Current: 200 mA
• Operating Supply Voltage: 3 V to 5.5 V
• Maximum Supply Current: 10 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Frequency: -
• Efficiency: -
• Lead Free Status / Rohs Status: Compliant
• Other names: CAT4109V-GT2TR

OE Operation
When the OE input goes from high to low, all three LED
channels are turned off. If OE remains low for longer than
t
current” from the supply.
LED by applying an external PWM signal. The device has
a very fast turn−on time (from OE rising to LED on)
allowing “instant on” when dimming LEDs.
and using the OE pin for dimming, the OE PWM frequency
should be much lower to preserve the color mixing.
PWRDWN
Output Enable
LED Current
VIN Quiescent Current
The Output Enable (OE) pin has two primary functions.
The OE input can be used to adjust the contrast of the RGB
When applying PWM signals to the three PWMx inputs
SHUTDOWN 0 mA
SHUTDOWN 0 mA
, the device enters shutdown mode drawing “zero
SHUTDOWN
t
PS
t
P2
50%
t
HI
50%
t
P1
Figure 2. CAT4109 OE Timing
t
LO
http://onsemi.com
t
R
10%
90%
t
4
F
frequencies from 100 Hz to 5 kHz for PWM duty cycle
down to 1%. PWM frequencies up to 50 kHz can be
supported for duty cycles greater than 10%.
small duty cycles, the device may enter shutdown mode.
This has no effect on the dimming accuracy, because the
turn−on time t
low time t
a “zero current” shutdown mode after a 4 ms delay (typical)
when OE is held low.
Accurate linear dimming on OE is compatible with PWM
When performing a combination of low frequencies and
To ensure that PWM pulses are recognized, pulse width
I
LED
= (1.2 V/R
LO
should be longer than 1 ms. The driver enters
PS
SET
is very short, in the range of 1 ms.
) x 400
0 mA
t
PWRDWN
SHUTDOWN 0 mA
SHUTDOWN 0 mA