FA13842,13843,13844,13845
s
Description
The FA1384X series are CMOS current mode control ICs for
off-line and DC-to-DC converters.
These ICs can reduce start-up circuit loss and are optimum for
high efficiency power supplies because of the low power
dissipation achieved through changes in the CMOS fabrication
process.
These ICs can drive a power MOSFET directly.
The high-performance, compact power supply can be
designed with minimal external components .
CMOS IC
FA13842, 13843, 13844, 13845
For Switching Power Supply Control
s
Dimensions, mm
SOP-8
8
5
1
4
4.9
+0.1
–0.05
s
Features
•
•
•
•
•
•
•
CMOS process
Low-power dissipation
Standby current 2µA (max.), start-up current 30µA (max.)
Pulse-by-pulse current limiting
5V bandgap reference
UVLO (Undervoltage lockout) with hysteresis
Maximum duty cycle
FA13842, 13843: 96%
FA13844, 13845: 48%
• Pin-for-pin compatible with UC384X
Note:
Pins are fully compatible, but characteristics are not.
When our ICs are applied to a power supply circuit
designed for other manufactures' 384X series, the
characteristics and safety features of the power supply
must be checked.
6.0
±0.2
3.9
0.4
±0.1
1.27
±0.2
DIP-8
8
5
s
Types of FA1384X series
Type
UVLO
Maximum duty Package
Start threshold Stop threshold cycle
FA13842P
16.5V±1V
9V±1V
96%
DIP
FA13842N
FA13843P
FA13843N
9.6V±1V
9V±1V
9V±1V
9V±1V
96%
48%
48%
SOP
DIP
SOP
DIP
SOP
DIP
SOP
1
9.3
1.5
4
6.4
3.0min 4.5max
3.3
0~8
°
0.05
0.25
–
+0.1
7.62
FA13844P
16.5V±1V
FA13844N
FA13845P
FA13845N
9.6V±1V
2.54
±0.25
0.46
±0.1
0~15
˚
0~1
5˚
1.7max
0.20
1
FUJI [ FUJI ELECTRIC ]
