Datasheet Linear Technology LTC3857 — 数据表

制造商	Linear Technology
系列	LTC3857

低I _Q双路2相同步降压控制器

数据表

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PDF, 453 Kb, 语言: en, 文件上传: Sep 23, 2017, 页数: 38
Low IQ, Dual, 2-Phase Synchronous Step-Down Controller

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价格

打包

	LTC3857EUH#PBF	LTC3857EUH#TRPBF	LTC3857IUH#PBF	LTC3857IUH#TRPBF
N	1	2	3	4
Package	5x5 QFN-32 包装外形图	5x5 QFN-32 包装外形图	5x5 QFN-32 包装外形图	5x5 QFN-32 包装外形图
Package Code	UH	UH	UH	UH
Package Index	05-08-1693	05-08-1693	05-08-1693	05-08-1693
Pin Count	32	32	32	32

参数化

Parameters / Models	LTC3857EUH#PBF	LTC3857EUH#TRPBF	LTC3857IUH#PBF	LTC3857IUH#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1381A-A	DC1381A-A	DC1381A-A	DC1381A-A
Design Tools	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File	LTspice File,LTpowerCAD File
Export Control	no	no	no	no
Features	Burst Mode, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good	Burst Mode, DCR Current Sense, Resistor Set Frequency, External Synchronization, Power Good
Frequency, kHz	850	850	850	850
Frequency Adjust Range	50kHz - 900kHz	50kHz - 900kHz	50kHz - 900kHz	50kHz - 900kHz
Frequency Sync Range	75kHz - 850kHz	75kHz - 850kHz	75kHz - 850kHz	75kHz - 850kHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	0.01	0.01	0.01	0.01
Isupply, mA	0.05	0.05	0.05	0.05
Max Phases	2	2	2	2
Monolithic	no	no	no	no
Number of Outputs	2	2	2	2
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Output Current, A	25	25	25	25
Output Current 2, A	25	25	25	25
Over Voltage Protection, V	40	40	40	40
Polyphase	yes	yes	yes	yes
Sense Resistor	Rsense, DCR	Rsense, DCR	Rsense, DCR	Rsense, DCR
Switch Current, A	25	25	25	25
Switch Current 2, A	25	25	25	25
Synchronous	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck
Topology 2	Buck	Buck	Buck	Buck
Vin Max, V	38	38	38	38
Vin Min, V	4	4	4	4
Vout Max, V	24	24	24	24
Vout Maximum	24V	24V	24V	24V
Vout Min, V	0.8	0.8	0.8	0.8
Vout Min 2, V	.8	.8	.8	.8
Vref Accuracy Over Temp, %	1	1	1	1

生态计划

	LTC3857EUH#PBF	LTC3857EUH#TRPBF	LTC3857IUH#PBF	LTC3857IUH#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant

模型线

系列: LTC3857 (4)

LTC3857EUH#PBF LTC3857EUH#TRPBF LTC3857IUH#PBF LTC3857IUH#TRPBF

制造商分类

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Multiple Output Buck | Micropower Buck Regulators | High Input Voltage Buck | External Power Switch Buck Controllers