AIC1686 AIC [Analog Intergrations Corporation], AIC1686 Datasheet - Page 7

• Manufacturer Part Number: AIC1686
• Description: Off-Line Power Supply Protection IC with Shunt Regulator
• Manufacturer: AIC [Analog Intergrations Corporation]

PIN DESCRIPTIONS
IN 1: PRIN
PIN 2: REMI - Logic input for remote ON/OFF
PIN 3: PG
PIN 4: V33 -
PIN 5: GND - Ground pin. Connect to ground
PIN 6: V5
PIN 7: V12
PIN 8: EAO - Output of the error amplifier. Can
PIN 9: EAI
PIN 10: LS
- Auxiliary protection logic input to
- Power good output signal. High
- From 5V power supply. Used for
- From 12V power supply. Used for
- Inverting
fault latch. HIGH for 25µS to set
latch and cause FL output to go
LOW. Internally active pulled
down for normal operation.
control
REMOTE ON, HIGH=REMOTE
OFF. In remote off state this chip
goes
FL=HIGH, REMO = LOW, and
PG = LOW.
level indicates that power is
good.
From 3.3V power supply. Used
for overvoltage sensing only.
on secondary side.
overvoltage sensing as well as
internal supply for certain specific
functions.
overvoltage sensing only.
be used to drive an opto-isolator.
amplifier, used to close voltage
feedback loop.
-
AC line sense input signal.
into
power
input
standby
supply.
of
the
LOW=
mode,
error
PIN 11: CLS - Timing capacitor used to help
PIN 12: VCC- VCC supply input to IC. This
PIN 13: REF - +5V precision reference output.
PIN 14: REMO- Remote ON/OFF output that
PIN 15: FL - Fault output that indicates the
PIN 16: CPG
Use rectified output from main
power
clamped to 9V and sinks up to
2mA.
ensure that a falling LS voltage is
detected before power supply
outputs fall out of regulation.
should be a DC voltage between
8 and 16V.
May be used to supply up to
25mA to external circuitry.
indicates the state of the power
supply. HIGH = REMOTE ON,
LOW=REMOTE OFF. This is
essentially the inverse of the
REMI input voltage.
fault condition. HIGH = NORMAL,
LOW = FAULT. When fault states
the PG goes LOW.
-Timing capacitor that sets the
delay from +5V main coming up
to PG signal being asserted High.
T
PGR
≈
2 5 C
transformer.
.
I
CPGH
×
CPG
AIC1686
Internally
7