CMOS IC(For Switching Power Supply Control)
FA13842,13843,13844,13845
s Description
The FA1384X series are CMOS current mode control ICs for off-line and DC-to-DC c...
Description
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,Power 13843, 13844, 13845 For Switching 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 Start threshold Stop threshold FA13842P 16.5V± 1V 9V± 1V FA13842N FA13843P 9.6V± 1V 9V± 1V FA13843N FA13844P 16.5V± 1V 9V± 1V FA13844N FA13845P FA13845N 9.6V± 1V 9V± 1V Maximum duty Package cycle 96% DIP SOP 96% DIP SOP 48% DIP SOP 48% DIP SOP
1
9.3 1.5
4
6.4
3.0min 4.5max
3.3
0~8°
0...
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