FA3629AV
s
Description
FA3629AV is a Power IC which includes DC-DC
converter controller and Nch-power MOSFET.
This IC can directly drive Nch/Pch MOSFET.
This IC is suitable to reduce converter size because it has
many functions in a small package TSSOP.
CMOS IC
For Switching Power Supply Control
FA3629AV
s
Dimensions, mm
TSSOP-16
16
9
s
Features
鈥?Low input voltage: 2.5V to 6.5V
鈥?40V CDMOS Process:
Built-in 0.3鈩?Nch-Power MOSFET(ch1, open drain)
鈥?3-channels PWM Control:
2 boost circuits(ch1, ch2), 1 inverting circuit (ch3)
鈥?Adjustable soft start time and maximum duty cycle
鈥?Built-in timer latch for short circuit protection:
Delay time = 2
16
/ (switching frequency)
鈥?Built-in protection functions: Overcurrent limit for MOSFET,
overheat protection, undervoltage lockout
鈥?Wide range of operation frequency: 100kHz to 1MHz
鈥?Package: TSSOP-16(Thin and small)
4.4
6.4
鹵0.1
5.2
0.07
鹵0.05
1
8
0.17
+0.02
鈥?.04
0~8藲
0.5
鹵0.08
0.2
鹵0.05
0.65
s
Applications
鈥?Power supply for general equipment
s
Block diagram
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin
symbol
Description
Ch.1 output of error amplifier
Ch.1 inverting input to error
amplifier
Ch. 2 inverting input to error
amplifier
Ground of control blocks
Ground of large power blocks
Ch. 2 output of error amplifier
Ch. 3 inverting input to error
amplifier
Ch. 3 output of error amplifier
Ch. 3 output (for Pch-MOSFET)
Ch. 2 output (for Nch-MOSFET)
Power supply
Ch.1 drain output of internal
Nch-MOSFET
Regulated voltage output
Oscillator timing capacitor
Soft start for Ch. 3
Soft start for Ch.1 and Ch. 2
FB1
IN1鈥?/div>
IN2鈥?/div>
GND
PGND
FB2
IN3鈥?/div>
FB3
OUT3
OUT2
VCC
OUT1
REG
CT
CS3
CS
1.1max
1
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