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LED DRIVER. IS31BL3230 Datasheet

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LED DRIVER. IS31BL3230 Datasheet






IS31BL3230 DRIVER. Datasheet pdf. Equivalent




IS31BL3230 DRIVER. Datasheet pdf. Equivalent





Part

IS31BL3230

Description

8 CHANNELS CONSTANT CURRENT LED DRIVER



Feature


IS31BL3230 8 CHANNELS CONSTANT CURRENT L ED DRIVER WITH PWM BRIGHTNESS CONTROL F ebruary 2012 GENERAL DESCRIPTION The I S31BL3230 provides eight regulated curr ent sources, each delivers up to 40mA o f load current with careful selection o f external sense resistors, all outputs at the IS31BL3230 may be connected in parallel to enable the current through the LED to be as h.
Manufacture

ISSI

Datasheet
Download IS31BL3230 Datasheet


ISSI IS31BL3230

IS31BL3230; igh as 320mA. The IS31BL3230 does not in clude a charge pump and therefore has n o noise and significantly improved the efficiency. The external resistor, RSET 1, determines the constant current outp ut of ports LED1 thru LED4, while resis tor RSET2 determines the constant curre nt output of ports LED5 thru LED8. Brig htness can be controlled with PWM techn iques. The constan.


ISSI IS31BL3230

t current source is set with two externa l sense resistors. Alternatively, a PWM signal applied to the PWM pin can vary the perceived brightness of the LED. T he device is in shut down mode when the PWM Input is logic low. FEATURES Ult ra low headroom voltage Cost effective LED driver Current adjustable via ext ernal resistors Best Noise and Efficie ncy Performance H.


ISSI IS31BL3230

ighly integrated design, minimal compone nt 1.6μA (typ.) Shutdown current Sma ll package QFN-16 3mm×3mm APPLICATION S Flash LED driver Backlight LED driv er TYPICAL APPLICATION CIRCUIT http:// www.DataSheet4U.net/ VIN Cin 1uF PWM I SET1 ISET2 RSET1 RSET2 GND LED1 LED2 L ED3 LED4 LED5 LED6 LED7 LED8 Figure 1 Typical Application Circuit Integrate d Silicon Solution, .

Part

IS31BL3230

Description

8 CHANNELS CONSTANT CURRENT LED DRIVER



Feature


IS31BL3230 8 CHANNELS CONSTANT CURRENT L ED DRIVER WITH PWM BRIGHTNESS CONTROL F ebruary 2012 GENERAL DESCRIPTION The I S31BL3230 provides eight regulated curr ent sources, each delivers up to 40mA o f load current with careful selection o f external sense resistors, all outputs at the IS31BL3230 may be connected in parallel to enable the current through the LED to be as h.
Manufacture

ISSI

Datasheet
Download IS31BL3230 Datasheet




 IS31BL3230
IS31BL3230
8 CHANNELS CONSTANT CURRENT LED DRIVER
WITH PWM BRIGHTNESS CONTROL
March 2015
GENERAL DESCRIPTION
The IS31BL3230 provides eight regulated current
sources, each delivers up to 90mA of load current with
careful selection of external sense resistors, all outputs
at the IS31BL3230 may be connected in parallel to
enable the current through the LED to be as high as
720mA.
The IS31BL3230 does not include a charge pump and
therefore has no noise and significantly improved the
efficiency. The external resistor, RSET1, determines the
constant current output of ports LED1 thru LED4, while
resistor RSET2 determines the constant current output of
ports LED5 thru LED8.
Brightness can be controlled with PWM techniques. The
constant current source is set with two external sense
resistors.
Alternatively, a PWM signal applied to the PWM pin can
vary the perceived brightness of the LED. The device is
in shut down mode when the PWM Input is logic low.
FEATURES
Ultra low headroom voltage
Total output current can be 720mA
Cost effective LED driver
Current adjustable via external resistors
Best noise and efficiency performance
Highly integrated design, minimal component
1.6μA (Typ.) shutdown current
Small package QFN-16 (3mm×3mm)
APPLICATIONS
Flash LED driver
Backlight LED driver
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical Application Circuit for Flash LED Driving
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 02/09/2015
1




 IS31BL3230
IS31BL3230
Figure 2 Typical Application Circuit for 8 LEDs Driving
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 02/09/2015
2




 IS31BL3230
IS31BL3230
PIN CONFIGURATION
Package
Pin Configurations (Top View)
QFN-16
PIN DESCRIPTION
No. Name
1
2
3, 7
4, 10
5, 8
6
9
11~16
LED2
LED1
VCC
GND
PWM
ISET1
ISET2
LED8~LED3
Thermal Pad
Description
Current source outputs 2.
Current source outputs 1.
Input voltage.
Ground.
PWM brightness control.
Current set 1 input.
Current set 2 input.
Current source outputs 8~3.
Connect to GND.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. B, 02/09/2015
3



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