AIC1568 AIC [Analog Intergrations Corporation], AIC1568 Datasheet - Page 6

• Manufacturer Part Number: AIC1568
• Description: 4-bit DAC, Simple PWM Power Regulator
• Manufacturer: AIC [Analog Intergrations Corporation]

PIN 11: PHASE - Over current detection pin. Connect
PIN 7: COMP - External compensation pin. This
PIN 8: FB
PIN 9: GND
PIN 10: PGOOD-Power
VID0
Table 1. Output Voltage Program
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
VID1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
- The error amplifier
- Signal GND. It also serves as
pin
amplifier
comparator. An RC network is
connected
compensate the voltage-control
feedback loop of the converter.
input pin. The FB pin and COMP
pin are used to compensate the
voltage-control feedback loop.
the power GND for the upper
gate driver.
PGOOD is an open drain output.
This pin is pulled low when the
converter output is ±10% out of
the VDAC reference voltage.
VID2
is
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
good
connected
output
VID3
to
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
indicator
FB
and
VDAC
3.5V
3.4V
3.3V
3.2V
3.1V
3.0V
2.9V
2.8V
2.7V
2.6V
2.5V
2.4V
2.3V
2.2V
2.1V
2.0V
to
inverting
pin
PWM
error
pin.
to
PIN 12: UGATE- External MOSFET gate drive pin.
PIN 13: BOOT - External
PIN 14: VCC
PIN 15: RT/OVP- Frequency
PIN 16: VSEN - Converter output voltage sense pin.
- The
the PHASE pin to source of the
external MOSFET. This pin detects
the voltage drop across the MOSFET
R
Connect this pin to gate of the
external MOSFET.
supply pin. To convert 5V main power
to V
MOSFET,
higher than 12V is recommended
since the negative power terminal of
the internal driver is internally tied to
GND.
Recommended supply voltage is 12V.
overvoltage indicator pin. This pin is
multiplexed to provide two functions.
The
switching
Connecting a resistor (R
pin to GND increases the frequency
according to the following equation:
The second function for this pin is to
drive an external SCR in the event of
an over voltage fault.
Connect this pin to the converter
output.
comparator circuits use this signal to
report output voltage status and
perform
function.
F
S
DS(ON)
≅
CORE
2 0 0
first
for over-current protection.
chip
power by driving N-channel
K H z
The
MOSFET
overvoltage
frequency
function
supply voltage of no
+
power
PGOOD
5
lo g R
adjustment
×
1 0
AIC1568
T
5
driver
supply
is
T
adjustment.
) from this
and
protection
oscillator
power
OVP
and
pin.
6