Datasheet Linear Technology LTC3874-1 — Ficha de datos

Fabricante	Linear Technology
Serie	LTC3874-1

Controlador esclavo síncrono reductor PolyPhase con detección DCR de sub milliohmios

Hojas de datos

PDF, 1.0 Mb, Idioma: en, Archivo subido: oct 3, 2017, Páginas: 22
PolyPhase Step-Down Synchronous Slave Controller with Sub-Milliohm DCR Sensing

Extracto del documento

	LTC3874EUF-1#PBF	LTC3874EUF-1#TRPBF	LTC3874IUF-1#PBF	LTC3874IUF-1#TRPBF
N	1	2	3	4
Package	4x4 QFN-24 Dibujo del esquema del paquete	4x4 QFN-24 Dibujo del esquema del paquete	4x4 QFN-24 Dibujo del esquema del paquete	4x4 QFN-24 Dibujo del esquema del paquete
Package Code	UF	UF	UF	UF
Package Index	05-08-1697	05-08-1697	05-08-1697	05-08-1697
Pin Count	24	24	24	24

Parameters / Models	LTC3874EUF-1#PBF	LTC3874EUF-1#TRPBF	LTC3874IUF-1#PBF	LTC3874IUF-1#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no
Features	Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase	Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase	Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase	Sub-Milliohm DCR Current Sense, External Synchronization, PolyPhase
Frequency, kHz	1000	1000	1000	1000
Frequency Adjust Range	250kHz - 1MHz	250kHz - 1MHz	250kHz - 1MHz	250kHz - 1MHz
Frequency Sync Range	250kHz - 1MHz	250kHz - 1MHz	250kHz - 1MHz	250kHz - 1MHz
Integrated Inductor	no	no	no	no
Ishutdown, µA	1800	1800	1800	1800
Isupply, mA	4.6	4.6	4.6	4.6
Max Phases	2, 3, 4, 6, 12	2, 3, 4, 6, 12	2, 3, 4, 6, 12	2, 3, 4, 6, 12
Number of Outputs	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	-40 to 85	-40 to 85
Output Current, A	25	25	25	25
Polyphase	yes	yes	yes	yes
Sense Resistor	DCR, Sub-Milliohm DCR	DCR, Sub-Milliohm DCR	DCR, Sub-Milliohm DCR	DCR, Sub-Milliohm DCR
Switch Current, A	25	25	25	25
Synchronous	yes	yes	yes	yes
Topology	Buck	Buck	Buck	Buck
Topology 1	Buck	Buck	Buck	Buck
Vin Max, V	38	38	38	38
Vin Min, V	4.5	4.5	4.5	4.5
Vout Max, V	5.5	5.5	5.5	5.5
Vout Maximum	5.5V	5.5V	5.5V	5.5V
Vout Min, V	0.6	0.6	0.6	0.6

	LTC3874EUF-1#PBF	LTC3874EUF-1#TRPBF	LTC3874IUF-1#PBF	LTC3874IUF-1#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente

Serie: LTC3874-1 (4)

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