Renesas Electronics Switching Regulators & Controllers 2,400+

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Part	Manufacturer	Other IC type	Temperature Grade	No. of Terminals	Package Code	Package Shape	Surface Mount	Maximum Switching Frequency	Package Body Material	Maximum Supply Current (Isup)	Maximum Output Current	No. of Functions	Technology	Terminal Form	Control Technique	Nominal Supply Voltage (Vsup)	Switcher Config	Package Style (Meter)	Package Equivalence Code	Terminal Pitch	Maximum Operating Temperature	Minimum Output Voltage	Control Mode	Minimum Operating Temperature	Terminal Finish	Maximum Output Voltage	Terminal Position	JESD-30 Code	Moisture Sensitivity Level (MSL)	Maximum Seated Height	Width (mm)	Qualification	Nominal Input Voltage	Additional Features	Minimum Input Voltage	JESD-609 Code	Maximum Time At Peak Reflow Temperature (s)	Peak Reflow Temperature (C)	Length	Nominal Output Voltage	Maximum Input Voltage
ISL91107IIAZ-T7A	Renesas Electronics																								TIN SILVER COPPER				1							e1
ISL91107IRTAZ	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	20	HVQCCN	RECTANGULAR	YES	2500 kHz	PLASTIC/EPOXY		4.8 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK-BOOST	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel			-40 Cel	MATTE TIN		QUAD	R-PQCC-N20	3	.8 mm	3 mm		3.6 V		1.8 V	e3	30	260	4 mm		5.5 V
ISL91110II2AZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	25	VFBGA	RECTANGULAR	YES	2500 kHz	PLASTIC/EPOXY		5.1 A	1		BALL	PULSE WIDTH MODULATION		BUCK-BOOST	GRID ARRAY, VERY THIN PROFILE, FINE PITCH		.4 mm	85 Cel			-40 Cel	TIN SILVER COPPER		BOTTOM	R-PBGA-B25	1	.59 mm	2.07 mm		3.6 V		1.8 V	e1			2.33 mm	3.5 V	5.5 V
ISL91110II2AZ-T7A	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	25	VFBGA	RECTANGULAR	YES	2500 kHz	PLASTIC/EPOXY		5.1 A	1		BALL	PULSE WIDTH MODULATION		BUCK-BOOST	GRID ARRAY, VERY THIN PROFILE, FINE PITCH		.4 mm	85 Cel			-40 Cel	TIN SILVER COPPER		BOTTOM	R-PBGA-B25	1	.59 mm	2.07 mm		3.6 V	PFM TECHNIQUE ALSO USED	1.8 V	e1	30	260	2.33 mm	3.5 V	5.5 V
ISL9111AEH33Z-T	Renesas Electronics	SWITCHING REGULATOR	OTHER	6	LSSOP	RECTANGULAR	YES	1400 kHz	PLASTIC/EPOXY		1.2 A	1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH		.95 mm	85 Cel		CURRENT-MODE	-20 Cel	MATTE TIN		DUAL	R-PDSO-G6	2	1.45 mm	1.6 mm		1.2 V		.5 V	e3	30	260	2.9 mm	3.3 V
ISL9113AIRAZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	8	HVSON	SQUARE	YES	2000 kHz	PLASTIC/EPOXY		1.5 A	1		NO LEAD	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-N8	1	1 mm	2 mm		3 V	OUTPUT IN ADJUSTABLE MODE IS 4.9V TO 5.2V	.8 V	e3	30	260	2 mm		4.7 V
ISL9305IRTHBFNCZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	16	HVQCCN	SQUARE	YES	3400 kHz	PLASTIC/EPOXY		1.5 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.16SQ,25	.65 mm	85 Cel	.825 V	CURRENT-MODE	-40 Cel	MATTE TIN	3.6 V	QUAD	S-PQCC-N16	3	.8 mm	4 mm		3.3 V		2.5 V	e3	30	260	4 mm	1.5 V	5.5 V
ISL95857CIRTZ	Renesas Electronics	SWITCHING REGULATOR				RECTANGULAR	YES		UNSPECIFIED			1		NO LEAD	PULSE WIDTH MODULATION										PURE MATTE TIN		QUAD	R-XQCC-N	3								30	260
ISL97519AIUZ	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	8	TSSOP	SQUARE	YES	1500 kHz	PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH		.65 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-G8	3	1.1 mm	3 mm		3.3 V		2.3 V	e3	30	260	3 mm	12 V	5.5 V
ISL97656IRTZ-TK	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	10	HVSON	SQUARE	YES	1500 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-N10	3	.5 mm	3 mm		3 V	IT HAS ADJUSTABLE OUTPUT VOLTAGE RANGE FROM 2.42V TO 24 V	2.2 V	e3	30	260	3 mm		6 V
IW1822-00	Renesas Electronics	SWITCHING CONTROLLER																							NICKEL PALLADIUM GOLD				1							e4
M51995AFP#CF0J	Renesas Electronics	SWITCHING CONTROLLER	COMMERCIAL EXTENDED	20	SOP	RECTANGULAR	YES	500 kHz	PLASTIC/EPOXY		2 A	1		GULL WING	PULSE WIDTH MODULATION		SINGLE	SMALL OUTLINE		1.27 mm	85 Cel			-30 Cel			DUAL	R-PDSO-G20		2.1 mm	5.3 mm	Not Qualified	18 V		12 V		20	260	12.6 mm		36 V
RAA211630GNP#HA0	Renesas Electronics	SWITCHING REGULATOR																							Matte Tin (Sn)				3							e3
ZL9101MAIRZ	Renesas Electronics	SWITCHING CONTROLLER																							MATTE TIN				3							e3
EL7630ICZ-T7A	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	6	SOP	RECTANGULAR	YES	1900 kHz	PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE			85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	R-PDSO-G6					3 V		2.7 V	e3					5.5 V
ICL7660ACBA-T	Renesas Electronics	SWITCHED CAPACITOR CONVERTER	COMMERCIAL	8	SOP	RECTANGULAR	YES	10 kHz	PLASTIC/EPOXY	.165 mA		1	CMOS	GULL WING			DOUBLER	SMALL OUTLINE	SOP8,.24	1.27 mm	70 Cel	-1.5 V		0 Cel		-10 V	DUAL	R-PDSO-G8	1	1.75 mm	3.9 mm		5 V		1.5 V				4.9 mm		12 V
ISL62883BHRTZ-T	Renesas Electronics	SWITCHING CONTROLLER	OTHER	48	HVQCCN	SQUARE	YES	500 kHz	PLASTIC/EPOXY			1		NO LEAD	HYSTERETIC CURRENT MODE		PHASE-SHIFT	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.4 mm	100 Cel		CURRENT-MODE	-10 Cel	MATTE TIN		QUAD	S-PQCC-N48	3	.8 mm	6 mm	Not Qualified	5 V	ALSO HAS PWM CONTROL TECHNIQUE	4.75 V	e3	30	260	6 mm		5.25 V
ISL6420BIAZ	Renesas Electronics	SWITCHING CONTROLLER	INDUSTRIAL	20	SSOP	RECTANGULAR	YES	1400 kHz	PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, SHRINK PITCH		.635 mm	85 Cel		VOLTAGE-MODE	-40 Cel	MATTE TIN		DUAL	R-PDSO-G20	3	1.75 mm	3.895 mm		12 V		5.6 V	e3	30	260	8.65 mm		28 V
ISL6527ACRZ-T	Renesas Electronics	SWITCHING CONTROLLER	COMMERCIAL	16	HVQCCN	SQUARE	YES	600 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.8 mm	70 Cel		VOLTAGE-MODE	0 Cel	Matte Tin (Sn) - annealed		QUAD	S-PQCC-N16		1 mm	5 mm		3.3 V		2.97 V	e3			5 mm		3.63 V
ISL69144IRAZ	Renesas Electronics	DUAL SWITCHING CONTROLLER																							MATTE TIN				3							e3
ISL8033AIRZ-T	Renesas Electronics	DUAL SWITCHING CONTROLLER	INDUSTRIAL	24	HVQCCN	SQUARE	YES	2850 kHz	PLASTIC/EPOXY		5.5 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		QUAD	S-PQCC-N24	3	1 mm	4 mm		3.6 V	O/P VOLTAGE IS FROM 0.8V	2.85 V	e3	30	260	4 mm		6 V
ISL8117AFRZ-T7A	Renesas Electronics	SWITCHING CONTROLLER	AUTOMOTIVE	16	HVQCCN	SQUARE	YES	2375 kHz	PLASTIC/EPOXY	4 mA		1		NO LEAD	PULSE WIDTH MODULATION	12 V	BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC16,.16SQ,20	.5 mm	125 Cel	.6 V	CURRENT-MODE	-40 Cel	MATTE TIN	54 V	QUAD	S-PQCC-N16	3	1 mm	4 mm		12 V		4.5 V	e3			4 mm		60 V
ISL8117FVEZ-T7A	Renesas Electronics	SWITCHING CONTROLLER	AUTOMOTIVE	16	HTSSOP	RECTANGULAR	YES	2375 kHz	PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH		.65 mm	125 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	R-PDSO-G16	2	1.2 mm	4.4 mm		5 V	0..6V TO 54V OUTPUT RANGE	4.5 V	e3	30	260	5 mm		5.5 V
ISL81601FRZ-T	Renesas Electronics	SWITCHING CONTROLLER	AUTOMOTIVE	32	HVQCCN	SQUARE	YES	650 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BUCK-BOOST	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	125 Cel		CURRENT-MODE	-40 Cel	PURE MATTE TIN		QUAD	S-PQCC-N32	3	1 mm	5 mm		8 V		4.5 V		30	260	5 mm		60 V
ISL81601FVEZ-T	Renesas Electronics	SWITCHING CONTROLLER	AUTOMOTIVE	38	HTSSOP	RECTANGULAR	YES	650 kHz	PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BUCK-BOOST	SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH		.5 mm	125 Cel		CURRENT-MODE	-40 Cel	PURE MATTE TIN		DUAL	R-PDSO-G38	2	1.1 mm	4.4 mm		8 V		4.5 V		30	260	9.7 mm		60 V
ISL8215MIRZ-T1	Renesas Electronics	SWITCHING REGULATOR	AUTOMOTIVE	22	XMA	RECTANGULAR	YES	2375 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BUCK	MICROELECTRONIC ASSEMBLY			125 Cel	.6 V	CURRENT-MODE	-40 Cel	NICKEL PALLADIUM GOLD	12 V	UNSPECIFIED	R-PDMA-N22	3	5.3 mm	13 mm		12 V		7 V	e4			19 mm		42 V
ISL85412FRTZ-T	Renesas Electronics	SWITCHING REGULATOR	AUTOMOTIVE	8	HVSON	SQUARE	YES	784 kHz	PLASTIC/EPOXY		.44 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	125 Cel		CURRENT-MODE	-40 Cel	PURE MATTE TIN		DUAL	S-PDSO-N8	3	.8 mm	3 mm		12 V		3.5 V		30	260	3 mm		40 V
ISL91107IINZ-T	Renesas Electronics																								TIN SILVER COPPER				1							e1
ISL9111AEH50Z-T7A	Renesas Electronics	SWITCHING REGULATOR	OTHER	6	LSSOP	RECTANGULAR	YES	1400 kHz	PLASTIC/EPOXY		1.2 A	1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH		.95 mm	85 Cel		CURRENT-MODE	-20 Cel	MATTE TIN		DUAL	R-PDSO-G6	2	1.45 mm	1.6 mm		1.2 V		.5 V	e3	30	260	2.9 mm	5 V
ISL9113EIAZ-T	Renesas Electronics	SWITCHING REGULATOR	OTHER	6	VFBGA	RECTANGULAR	YES	2200 kHz	PLASTIC/EPOXY		1.5 A	1		BALL	PULSE WIDTH MODULATION		BOOST	GRID ARRAY, VERY THIN PROFILE, FINE PITCH		.4 mm	85 Cel		CURRENT-MODE	-20 Cel	TIN SILVER COPPER		BOTTOM	R-PBGA-B6	1	.55 mm	.8 mm		3 V	ADJUSTABLE VOUT=(3-5.2 VOLT)	.8 V	e1			1.36 mm		4.7 V
RAA211250GSP#HA0	Renesas Electronics	SWITCHING REGULATOR
ISL6843IBZ-T	Renesas Electronics	SWITCHING CONTROLLER	INDUSTRIAL	8	SOP	RECTANGULAR	YES	2000 kHz	PLASTIC/EPOXY		1 A	1	BICMOS	GULL WING	PULSE WIDTH MODULATION		SINGLE	SMALL OUTLINE		1.27 mm	105 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	R-PDSO-G8	3	1.75 mm	3.9 mm	Not Qualified	15 V		9 V	e3	30	260	4.9 mm		16 V
ISL9111EHADJZ-T7A	Renesas Electronics	SWITCHING REGULATOR	OTHER	6	LSSOP	RECTANGULAR	YES	1400 kHz	PLASTIC/EPOXY		1.2 A	1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH		.95 mm	85 Cel		CURRENT-MODE	-20 Cel	MATTE TIN		DUAL	R-PDSO-G6	2	1.45 mm	1.6 mm		1.2 V		.76 V	e3	30	260	2.9 mm
ISL9113ER7Z-T	Renesas Electronics	SWITCHING REGULATOR	OTHER	8	HVSON	SQUARE	YES	2000 kHz	PLASTIC/EPOXY		1.5 A	1		NO LEAD	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-20 Cel	MATTE TIN		DUAL	S-PDSO-N8	1	1 mm	2 mm		3 V		.8 V	e3	30	260	2 mm	5 V	4.7 V
ISL95858HRZ	Renesas Electronics	SWITCHING REGULATOR																							PURE MATTE TIN				3								30	260
ISL95833HRTZ	Renesas Electronics	DUAL SWITCHING CONTROLLER		32	QCCN	RECTANGULAR	YES		UNSPECIFIED		60 A	1		NO LEAD	PULSE WIDTH MODULATION		PUSH-PULL	CHIP CARRIER							MATTE TIN		QUAD	R-XQCC-N32	3						4.75 V	e3	30	260			5.25 V
EL7564CM	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	20	SOP	RECTANGULAR	YES	1000 kHz	PLASTIC/EPOXY		5 A	1		GULL WING	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE		1.27 mm	85 Cel		CURRENT-MODE	-40 Cel			DUAL	R-PDSO-G20		2.6416 mm	7.493 mm		5 V	VOUT=(1 -3.8 VOLT)	4.5 V		NOT SPECIFIED	NOT SPECIFIED	12.8016 mm		5.5 V
ISL8011IRZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	10	HVSON	SQUARE	YES	1750 kHz	PLASTIC/EPOXY		1.2 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE	SOLCC10,.12,20	.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-N10	3	1 mm	3 mm		3.6 V		2.7 V	e3	30	260	3 mm		5.5 V
ISL95857HRTZ-T	Renesas Electronics	SWITCHING CONTROLLER		40	HVQCCN	RECTANGULAR	YES		UNSPECIFIED			1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	LCC40,.2SQ,16	.4 mm					MATTE TIN		QUAD	S-XQCC-N40	3	.85 mm	5 mm					e3	30	260	5 mm
ISL84541CPZ	Renesas Electronics																																				NOT SPECIFIED	NOT SPECIFIED
ISL8560IRZ	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	20	HVQCCN	SQUARE	YES	600 kHz	PLASTIC/EPOXY		4.8 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.8 mm	85 Cel		VOLTAGE-MODE	-40 Cel	MATTE TIN		QUAD	S-PQCC-N20	2	1 mm	6 mm		24 V		9 V	e3	30	260	6 mm		60 V
ISL62392HRTZ	Renesas Electronics	DUAL SWITCHING CONTROLLER	OTHER	28	HVQCCN	SQUARE	YES	28 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.4 mm	100 Cel			-10 Cel	PURE MATTE TIN		QUAD	S-PQCC-N28	1	.8 mm	4 mm		12 V		5.5 V		30	260	4 mm		25 V
ISL6556BCB-T	Renesas Electronics	SWITCHING CONTROLLER	COMMERCIAL	28	SOP	RECTANGULAR	YES		PLASTIC/EPOXY			1		GULL WING	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE		1.27 mm	70 Cel		CURRENT-MODE	0 Cel			DUAL	R-PDSO-G28		2.65 mm	7.5 mm		5 V		4.75 V				17.9 mm		5.25 V
ISL6558IRZ	Renesas Electronics	SWITCHING CONTROLLER	INDUSTRIAL	20	HVQCCN	SQUARE	YES	1500 kHz	PLASTIC/EPOXY			1		NO LEAD	PULSE WIDTH MODULATION		BUCK	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE		.65 mm	85 Cel			-40 Cel	MATTE TIN		QUAD	S-PQCC-N20	2	1 mm	5 mm		5 V		4.75 V	e3	30	260	5 mm		5.25 V
ISL80015FRZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	8	HVSON	SQUARE	YES	1200 kHz	PLASTIC/EPOXY		2.9 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-N8	3	.8 mm	2 mm		3.6 V		2.7 V	e3	30	260	2 mm		5.5 V
ISL8002FRZ-T	Renesas Electronics	SWITCHING REGULATOR	INDUSTRIAL	8	HVSON	SQUARE	YES	1150 kHz	PLASTIC/EPOXY		4 A	1		NO LEAD	PULSE WIDTH MODULATION		BUCK	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE		.5 mm	85 Cel		CURRENT-MODE	-40 Cel	MATTE TIN		DUAL	S-PDSO-N8	3	.8 mm	2 mm		3.6 V		2.7 V	e3	30	260	2 mm		5.5 V
ISL9111EH33Z-T7A	Renesas Electronics	SWITCHING REGULATOR	OTHER	6	LSSOP	RECTANGULAR	YES	1400 kHz	PLASTIC/EPOXY		1.2 A	1		GULL WING	PULSE WIDTH MODULATION		BOOST	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH		.95 mm	85 Cel		CURRENT-MODE	-20 Cel	MATTE TIN		DUAL	R-PDSO-G6	2	1.45 mm	1.6 mm		1.2 V		.76 V	e3	30	260	2.9 mm	3.3 V
ISL95866HRZ	Renesas Electronics	SWITCHING REGULATOR																							MATTE TIN				3							e3

Switching Regulators & Controllers

Switching regulators and controllers are electronic devices used to regulate the output voltage and current of power supplies. They operate by rapidly switching a power supply circuit between on and off states, resulting in a high-frequency waveform that can be filtered and smoothed to produce a stable output voltage.

Switching regulators and controllers offer several advantages over traditional linear regulators, including higher efficiency and the ability to handle a wider range of input voltages. They are commonly used in applications such as power supplies for computers, LED lighting, and motor control.

Switching regulators and controllers come in a variety of forms, including step-up (boost), step-down (buck), and step-up/down (buck-boost) configurations. They may be designed as integrated circuits (ICs) or as standalone modules.

Switching regulators and controllers typically include feedback control circuits to adjust the output voltage and current, as well as protection circuits to prevent overvoltage, overcurrent, and overtemperature conditions. They may also include features such as soft-start to reduce inrush currents and synchronization with external clock signals.