ACT6330
PIN DESCRIPTIONS
PIN
1, 2, 3,
14, 15, 16
4
5
6
7
8
9
10
11
12
13
EP
Rev0, 02-Apr-08
NAME
GA
FB1
OVP1
SW1
GP12
SW2
OVP2
FB2
ON2
ON1
IN
EP
DESCRIPTION
Analog Ground. Connect GAs directly to a quiet ground node. Connect GAs and GP12 to-
gether at a single point as close to the IC as possible.
Feedback Sense for REG1. Connect this pin to the LED string current sense resistor to sense
the LED current.
Over-Voltage Protection Input for REG1. Connect this pin directly to the output node to sense
and prevent over-voltage conditions.
Switching Node Output for REG1. Connect this pin to the switching end of the inductor.
Power Ground for REG1, REG2. Connect GP12 directly to a power ground plane. Connect
GAs and GP12 together at a single point as close to the IC as possible.
Switching Node Output for REG2. Connect this pin to the switching end of the inductor.
Over-Voltage Protection Input for REG2. Connect this pin directly to the output node to sense
and prevent over-voltage conditions.
Feedback Sense for REG2. Connect this pin to the center point of a resistive voltage divider
to sense output voltage.
Enable Control Input for REG2. Drive ON2 to IN or to a logic high for normal operation, drive
to GA or a logic low to disable REG2.
Enable Control Input for REG1. Drive ON1 to IN or to a logic high for normal operation, drive
to GA or a logic low to disable REG1.
Power Input for the IC. Bypass IN to GA with a capacitor placed as close as possible to the IC.
Exposed Pad. Must be soldered to ground on the PCB.
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TM
ActivePMU
TM
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