AIC1567 AIC [Analog Intergrations Corporation], AIC1567 Datasheet - Page 7

• Manufacturer Part Number: AIC1567
• Description: 5-bit DAC, Synchronous PWM Power Regulator with Linear Controller
• Manufacturer: AIC [Analog Intergrations Corporation]

PIN 17: PHASE - Over current detection pin. Connect
PIN 18: UGATE- External MOSFET gate drive pin.
PIN 19: BOOT - External
PHYSICAL DIMENSIONS
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
24 LEAD PLASTIC SO (300 mil) (unit: mm)
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
B
the PHASE pin to source of the
external MOSFET. This pin detects
the voltage drop across the MOSFET
R
Connect UGATE to gate of the
external MOSFET.
supply pin. To convert 5V main power
DS(ON)
D
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
for over-current protection.
e
MOSFET
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
A
driver
E
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
H
C
2.05V
2.00V
1.95V
1.90V
1.85V
1.80V
1.75V
1.70V
1.65V
1.60V
1.55V
1.50V
1.45V
1.40V
1.35V
1.30V
2.1V
2.0V
power
L
PIN 20: PGND - Driver power GND pin. PGND should
PIN 21: LGATE - Lower N-MOSFET gate driver pin.
PIN 22: VCC
PIN 23: OVP
PIN 24: RT
SYMBOL
A1
A
B
C
D
E
H
e
L
- The chip power supply pin. It also
- Frequency
-Over voltage indicator pin. This pin
to V
MOSFET, supply voltage of no higher
than 12V is recommended since the
negative
internal driver is internally tied to
GND.
be connected to a low impedance
ground plane in close to lower N-
MOSFET source.
serves as power supply for LGATE
driver. Recommended supply voltage
is 12V.
also provides a driver source current
to turn on an external SCR in the
event of an over voltage condition.
Connecting a resistor (RT) from this
pin to GND, increase the frequency
by the following equation.
F
S
CORE
≅
15.20
10.00
2.35
0.10
0.33
0.23
7.40
0.40
MIN
200
power by driving N-channel
1.27(TYP)
KHz
power
+
adjustment
5 10
log R
terminal
×
15.60
10.65
MAX
2.65
0.30
0.51
0.32
7.60
1.27
AIC1567
T
5
of
pin.
7
the