Buck

Overview

High efficiency&high power density.

Silergy's high-efficiency DC / DC step-down switching regulators have a wide range of input voltage ranges and output current capabilities, and there is always a step-down regulator that can meet your system requirements.

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Product Type	In Production Pre-sample NRND
Application Type	Consumer Industrial Automotive
Vin(min)	≥	Vo(max)	≤
Vin(max)	≤	Io(max)	≤
Iq(typ)	≤

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Part number	Channel!(#)	Vin (min) !(V)	Vin (max) !(V)	Switching frequency (min)!(kHz)	Switching frequency (max)!(kHz)	Vout (min) !(V)	Vout (max) !(V)	Iout (max) !(A)	Vref accuracy! (±%)	Vout accuracy!(±%)	Control mode	Duty cycle (max)!(%)	Operation mode	Iq (typ) !(uA)	Features	Package	Operating temperature range!(°C)	Functional safety category	Datasheet	Online Simulation
Matching parts：202						5.15 5.1 3.36 3.338 3.3 3.2 2.5 1.8 1.5 1.225 1.2 1 0.9 0.81 0.8 0.765 0.7625 0.7125 0.6 0.4 0.1-1	? 37.6 36 33.84 24 12.5 12 9.5 9.2 6 5.95 5.5 5.15 5.1 5 4.4 3.4 3.36 3.338 3.3 2.5 1.8 1.55 1.5 1.3875 1.2 1		3(over temperature) 3 2(over temperature) 2 1.5(over temperature) 1.5 1.2 1(over temperature) 1	2 1.5 1(over temperature) 1	Peak current control Constant on time Clock+Ipeak COT+Ripple COT+Ivalley COT OFF+Ipeak		PFM/FCCM PFM FCCM/PFM Selectable FCCM Auto PFM		Stackable PMBus Soft start Power good I2C Output discharge programmable current limit Latch-off SCP Programmable current limit Latch-off SCP Hiccup SCP Soft start LDO output LDO output Buffered reference programmable current limit Hiccup SCP Programmable current limit ±10mA buffered reference Asynchronous Pre-bias startup Output discharge Asynchronous I2C Interleave operation Enable Fixed soft-start Low Iq UVP with hiccup Low ISD Cycle by cycle overcurrent protection Pre-bias startup Auto-discharge Wettable flanks package OVP External bias input Adjustable switching frequency Spread spectrum Frequency synchronization 100% duty cycle Forced PWM Adjustable soft-start	TSOT23-8 TSOT23-6 SOT583 SOT563 SOT23-6 SOT23-5 SO8E QFN3×4-21 QFN3×4-19 QFN3×4-14 QFN3×4-13 QFN3×3-20 QFN3×3-16 QFN3×3-12 QFN3×3-10 QFN3.5×4-20 QFN3.5×4-14 QFN3.5×3.5-20 QFN3.5×3.5-18 QFN2×3-9 QFN2×3-14 QFN2×2-12 QFN2×2-10 QFN2×1.5-8 QFN2x2-12 QFN2.5×2.5-16 QFN1.5×1.5-7 LGA6×6-42 DFN4×4-8 DFN3×3-12 DFN3×3-10 DFN2×2-8 DFN2×2-7 DFN2×2-6 DFN2×1.5-8 DFN1.5×1.5-6 DFN1.4×1.8-6 DFN1.45×1-6 CSP1.56×1.96-20	-40 to 125	Capable	Y N

SY26024DQD	1	2.5	5.5	2200	2200	0.6	5	4	1(over temperature)		COT+Ripple	100	Auto PFM	21	Power good,Output discharge	DFN1.5×1.5-6	-40 to 125		Y	Consumer
SY26023DQD	1	2.5	5.5	2200	2200	0.6	5	3	1(over temperature)		COT+Ripple	100	Auto PFM	21	Power good,Output discharge	DFN1.5×1.5-6	-40 to 125		N	Consumer
SY20277QQC	1	2.7	5.5	1500	1500	0.6	1.5	12		1	COT+Ripple	70	Auto PFM	95	Output discharge, I2C	QFN3×3-12	-40 to 125		N	Consumer
SY20118ADFC	1	2.5	5.5	1000	1000	0.6	5	4	1.5		COT OFF+Ipeak	100	Auto PFM	55	Power good,Output discharge	DFN2×2-8	-40 to 125		Y	Consumer
SY89456WYQ																			N	Consumer
SY8892BARC																			N	Consumer
SY8510ADC																			N	Consumer
SY83088JRHC																			N	Consumer
SY83071BTMC																			N	Consumer
SY83008YKQ																			N	Consumer
SY82852GABT																			N	Consumer
SY82802BABT																			N	Consumer
SY81586SVD																			N	Consumer
SY81153CART	1	4	18	1200	1200	0.6	5.5	3	1(over temperature)		COT+Ripple	75	Auto PFM	160		SOT563	-40 to 125		N	Consumer
SY81105EADT	1	4.5	18	400	400	0.6	9.5	5	1		COT+Ripple	75	FCCM			TSOT23-6	-40 to 125		N	Consumer
SY81105ADT	1	4.5	18	400	400	0.6	9.5	5	1		COT+Ripple	75	Auto PFM	200		TSOT23-6	-40 to 125		N	Consumer
SY81104EADT	1	4.5	18	400	400	0.6	5.5	4	1		COT+Ripple	75	FCCM			TSOT23-6	-40 to 125		N	Consumer
SY81103EABT	1	4.5	18	500	500	0.6	9.2	3	1.5		COT+Ripple	75	FCCM			SOT23-6	-40 to 125		N	Consumer
SY81103CABT	1	4.5	18	1200	1200	0.6	9.2	3	1.5		COT+Ripple	75	Auto PFM	200		SOT23-6	-40 to 125		N	Consumer
SY81103BABT	1	4.5	18	1200	1200	0.6	9.2	3	1.5		COT+Ripple	75	FCCM			SOT23-6	-40 to 125		N	Consumer

Selection Guide

Title	Date
Automotive Solutions Q4 2025	2025-12-02
Consumer Selection Guide Q4 2025	2025-12-02
Industrial Designs Q4 2025	2025-12-02