High-Reliability Isolated Switching Regulators

Overview

Microsemi is the inventor of PWM controllers, in the market since 1975 with the SG1524. Microsemi's PWM controller family for isolated applications includes products fit for Industrial temperature range and Military-space temperature range.

Industrial

Microsemi’s Industrial High Reliability PWM controllers operate from -25 to 85oC and are available in the following package options:
J: DIP, 16/18-pin, Ceramic
Q: LCC, 20-pin, Plastic
Y: DIP, 8-pin, Ceramic

P/N	Pack.	Mode	Topologies	Vsup (V)	Vref (V)	Vref Acc. (%)	Duty Cyc (%)	Gate Driv (mA)	Vsen (V)	Iq (mA)	Soft Start	UVLO (V)	UVLO Hyst. (V)	Istart max (mA)	Int. Freq. (kHz)	Ext. Sync (kHz)
SG2524	J	Volt./ Curr.	Flyback Forward Half-Bridge Buck Push-Pull	8- 40	5	4	45- 49	50	0.2	10	No	N/A	N/A		100- 300	100- 300
SG2524B	J	Volt./ Curr.	Flyback Forward Half-Bridge Buck Push-Pull	7- 40	5	1	45- 49	100	0.2	12	No	4.5	N/A		100- 400	100- 400
SG2525A	J	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	5.1	1	45- 49	100		20	Yes	7	N/A		100- 350	100- 350
SG2526	J	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	5	1	45- 49	100	0.1	30	Yes	4.8	0.2		100- 350	100- 350
SG2526B	J	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	5	1	45- 49	100	0.1	30	Yes	4.8	0.2		100- 500	100- 500
SG2527A	J	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	5.1	1	45- 49	100		20	Yes	7	N/A		100- 350	100- 350
SG2825C	J Q	Volt./ Curr.	Flyback AC-Forward Forward Half-Bridge Buck Push-Pull	10- 30	5.1	1	0- 85	200	1	33	Yes	9.2	0.8	1.2	4- 1500	4- 2000
SG2842	J Y	Curr.	Flyback AC-Forward Buck	10- 30	5	1	0- 95	200	1	17	Yes	16	6	1	0.1- 500	0.1- 500
SG2843	J Y	Curr.	Flyback AC-Forward Buck	7.6- 30	5	1	0- 95	200	1	17	Yes	8.4	0.8	1	0.1- 500	0.1- 500
SG2844	J Y	Curr.	Flyback Forward Buck	10- 30	5	1	0- 48	200	1	17	Yes	16	6	1	0.1- 500	0.1- 500
SG2845	J Y	Curr.	Flyback Forward Buck	7.6- 30	5	1	0- 48	200	1	17	Yes	8.4	0.8	1	0.1- 500	0.1- 500
SG2846	J Q	Curr.	Flyback Forward Buck Push-Pull	8- 40	5.1	1	0- 48	200	0.5	21	Yes	7.7	0.75		1- 500	1- 500
UC2842A	Y	Curr.	Flyback AC-Forward Buck	10- 30	5	1	0- 96	200	1	17	Yes	16	6	0.5	0.1- 500	0.1- 500
UC2843A	Y	Curr.	Flyback AC-Forward Buck	7.6- 30	5	1	0- 96	200	1	17	Yes	8.4	0.8	0.5	0.1- 500	0.1- 500
UC2844A	Y	Curr.	Flyback Forward Buck	10- 30	5	1	0- 48	200	1	17	Yes	16	6	0.5	0.1- 500	0.1- 500
UC2845A	Y	Curr.	Flyback Forward Buck	7.6- 30	5	1	0- 48	200	1	17	Yes	8.4	0.8	0.5	0.1- 500	0.1- 500

Military

Microsemi’s Space/Military PWM controllers operate from -55 to +125oC and are available in the following package options:
F: Flatpack, 20-pin,Ceramic
J: DIP, 16/18-pin, Ceramic
L: LCC, 20-pin, Ceramic
Y: DIP, 8-pin, Ceramic

The -883B, -DESC and -JAN suffixes indicate compliance with the 883B, DESC and JAN military/space standards respectively.

P/N	Packages	Mode	Topologies	Vsup (V)	Vref Acc. (%)	Duty Cyc. (%)	Gate Driv (mA)	Vsen (V)	Iq (mA)	Soft Start	UVLO (V)	UVLO Hyst (V)	Istart max (mA)	Int. Freq. (kHz)	Ext. Sync (kHz)
SG1524	F F-883B J J-883B J-DESC J-JAN L L-883B	Volt./ Curr.	Flyback Forward Half-Bridge Buck Push-Pull	8- 40	4	45- 49	50	0.2	10	No	N/A	N/A		100- 300	100- 300
SG1524B	F F-883B J J-883B J-DESC L L-883B	Volt./ Curr.	Flyback Forward Half-Bridge Buck Push-Pull	7- 40	1	45- 49	100	0.2	12	No	4.5	N/A		100- 400	100- 400
SG1525A	F-DESC J J-883B J-DESC J-JAN L L-883B	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	1	45- 49	100		20	Yes	7	N/A		100- 350	100- 350
SG1526	J J-883B L L-883B	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	1	45- 49	100	0.1	30	Yes	4.8	0.2		100- 350	100- 350
SG1526B	J J-883B J-DESC J-JAN L L-883B	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	1	45- 49	100	0.1	30	Yes	4.8	0.2		100- 500	100- 500
SG1527A	J J-883B J-DESC J-JAN L L-883B	Volt.	Flyback Forward Half-Bridge Buck Push-Pull	8- 35	1	45- 49	100		20	Yes	7	N/A		100- 350	100- 350
SG1825C	F-DESC J J-883B J-DESC L L-883B L-DESC	Volt./ Curr.	Flyback AC Forward Forward Half-Bridge Buck Push-Pull	10- 30	1	0- 85	200	1	33	Yes	9.2	0.8	1.2	4- 1500	4- 2000
SG1842	J J-883B J-DESC L L-883B L-DESC Y Y-883B Y-DESC	Curr.	Flyback AC Forward Buck	10- 30	1	0- 95	200	1	17	Yes	16	6	1	0.1- 500	0.1- 500
SG1843	F-DESC J J-883B J-DESC L L-883B L-DESC Y Y-883B Y-DESC	Curr.	Flyback AC Forward Buck	7.6-30	1	0- 95	200	1	17	Yes	8.4	0.8	1	0.1- 500	0.1- 500
SG1844	F-DESC J J-883B J-DESC L L-883B L-DESC Y Y-883B Y-DESC	Curr.	Flyback Forward Buck	10- 30	1	0- 48	200	1	17	Yes	16	6	1	0.1- 500	0.1- 500
SG1845	F-DESC J J-883B J-DESC L L-883B L-DESC Y Y-883B Y-DESC	Curr.	Flyback Forward Buck	7.6- 30	1	0- 48	200	1	17	Yes	8.4	0.8	1	0.1- 500	0.1- 500
SG1846	F-DESC J J-883B J-DESC L L-883B L-DESC	Curr.	Flyback Forward Buck Push-Pull	8- 40	1	0- 48	200	0.5	21	Yes	7.7	0.75		1- 500	1- 500
UC1842A	Y	Curr.	Flyback AC Forward Buck	10- 30	1	0- 96	200	1	17	Yes	16	6	0.5	0.1- 500	0.1- 500
UC1843A	Y	Curr.	Flyback AC Forward Buck	7.6- 30	1	0- 96	200	1	17	Yes	8.4	0.8	0.5	0.1- 500	0.1- 500
UC1844A	Y	Curr.	Flyback Forward Buck	10- 30	1	0- 48	200	1	17	Yes	16	6	0.5	0.1- 500	0.1- 500
UC1845A	Y	Curr.	Flyback Forward Buck	7.6- 30	1	0- 48	200	1	17	Yes	8.4	0.8	0.5	0.1- 500	0.1- 500

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