ACT6358(2007) Ver la hoja de datos (PDF) - Active-Semi, Inc
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ACT6358 Datasheet PDF : 10 Pages
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ACT6357/ACT6358
Rev PrB, 30-Aug-07
ORDERING INFORMATION
PART NUMBER
ACT6357NH-T
ACT6358NH-T
CURRENT
LIMIT
0.5A
1A
TEMPERATURE
RANGE
-40°C to 85°C
-40°C to 85°C
PIN CONFIGURATION
PACKAGE
TDFN33-8
TDFN33-8
PINS
8
8
PACKAGING
TAPE & REEL
TAPE & REEL
G1
IN 2
EN 3
BC 4
ACT6357
ACT6358
8 SW
7 OV
6 SS
5 FB
TDFN33-8
PIN DESCRIPTIONS
PIN NAME
DESCRIPTION
1
G
Ground
2
IN
Supply Input
3
EN
Enable Control. Drive to a logic high to enable the device. Connect to a logic low to disable the
device. EN should not be left floating; connect EN to IN when unused.
Brightness Control. Accepts either a PWM or analog control signal to perform LED brightness
4
BC
control. For best results, PWM frequency must be between 100Hz and 10kHz, with high level
above 1.7V. Analog control signal must be in the 0 to 1.5V range, providing a LED brightness
dynamic range of 10 to 1.
5
FB
Feedback Input. Connect this pin to the cathode of the bottom LED, and a current feedback
resistor between this pin and G to set the LED bias current.
6
SS
Soft Start Control Input. Connect a capacitor from this pin to G to program the soft start
duration. SS is internally discharged when IC the is disabled.
Over Voltage Protection Input. The IC is automatically disabled when the voltage at this pin
7
OV exceeds 1.21V. Connect OV to the center point of a resistive voltage divider connected across
the LED string.
8
SW Switch Output. Connect this pin to the inductor and the Schottky diode.
EP
EP Exposed Pad. Connect to ground.
Innovative Products. Active Solutions.
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Copyright © 2007 Active-Semi, Inc.
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