Datasheet Linear Technology LT3991 — Ficha de datos

Fabricante	Linear Technology
Serie	LT3991

Regulador reductor de 55 V, 1.2 A con corriente de reposo de 2.8 µA

Hojas de datos

Vista previa y descarga

PDF, 398 Kb, Idioma: en, Archivo subido: sept 19, 2017, Páginas: 24
55V, 1.2A Step-Down Regulator with 2.8μA Quiescent Current

Extracto del documento

Precios

Embalaje

	LT3991EDD#PBF	LT3991EDD#TRPBF	LT3991EMSE#PBF	LT3991EMSE#TRPBF	LT3991EMSE-3.3#PBF	LT3991EMSE-3.3#TRPBF	LT3991EMSE-5#PBF	LT3991EMSE-5#TRPBF	LT3991IDD#PBF	LT3991IDD#TRPBF	LT3991IMSE#PBF	LT3991IMSE#TRPBF	LT3991IMSE-3.3#PBF	LT3991IMSE-3.3#TRPBF	LT3991IMSE-5#PBF	LT3991IMSE-5#TRPBF
N	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16
Package	3x3 DFN-10 Dibujo del esquema del paquete	3x3 DFN-10 Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	3x3 DFN-10 Dibujo del esquema del paquete	3x3 DFN-10 Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete	MS-10E Dibujo del esquema del paquete
Package Code	DD	DD	MSE	MSE	MSE	MSE	MSE	MSE	DD	DD	MSE	MSE	MSE	MSE	MSE	MSE
Package Index	05-08-1699	05-08-1699	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1699	05-08-1699	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1664	05-08-1664
Pin Count	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10	10

Paramétricos

Parameters / Models	LT3991EDD#PBF	LT3991EDD#TRPBF	LT3991EMSE#PBF	LT3991EMSE#TRPBF	LT3991EMSE-3.3#PBF	LT3991EMSE-3.3#TRPBF	LT3991EMSE-5#PBF	LT3991EMSE-5#TRPBF	LT3991IDD#PBF	LT3991IDD#TRPBF	LT3991IMSE#PBF	LT3991IMSE#TRPBF	LT3991IMSE-3.3#PBF	LT3991IMSE-3.3#TRPBF	LT3991IMSE-5#PBF	LT3991IMSE-5#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Demo Boards	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A	DC1526A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Features	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization	Burst Mode, Resistor Set Frequency, External Synchronization
Frequency, kHz	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000	2000
Frequency Adjust Range	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz	200kHz - 2MHz
Frequency Sync Range	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz	250kHz - 2MHz
Integrated Inductor	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Ishutdown, µA	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7
Isupply, mA	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017	0.0017
Max Phases	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Monolithic	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes	yes
Number of Outputs	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2	1.2
Polyphase	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Switch Current, A	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3	2.3
Synchronous	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no	no
Topology	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	55	55	55	55	55	55	55	55	55	55	55	55	55	55	55	55
Vin Min, V	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3
Vout Max, V	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30	30
Vout Maximum	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V	30V
Vout Min, V	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19
Vref Accuracy Over Temp, %	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1	2.1

Plan ecológico

	LT3991EDD#PBF	LT3991EDD#TRPBF	LT3991EMSE#PBF	LT3991EMSE#TRPBF	LT3991EMSE-3.3#PBF	LT3991EMSE-3.3#TRPBF	LT3991EMSE-5#PBF	LT3991EMSE-5#TRPBF	LT3991IDD#PBF	LT3991IDD#TRPBF	LT3991IMSE#PBF	LT3991IMSE#TRPBF	LT3991IMSE-3.3#PBF	LT3991IMSE-3.3#TRPBF	LT3991IMSE-5#PBF	LT3991IMSE-5#TRPBF
RoHS	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente	Obediente

Artículos

Descargar
1.2A Buck Converters Draw Only 2.8µA When Regulating Zero Load, Accept 38VIN or 55VIN &mdash LT Journal
PDF, 955 Kb, Archivo publicado: dic 1, 2009
Extracto del documento
LINEAR TECHNOLOGY DECEMBER 2009 IN THIS ISSUEвЂ¦
COVER ARTICLE
1.2A Buck Converters Draw Only 2.8ВµA
When Regulating Zero Load, Accept
38VIN or 55VIN.1
John Gardner Linear in the News.2
DESIGN FEATURES
775 Nanovolt Noise Measurement
for a Low Noise Voltage Reference
.6
Jim Williams Monolithic Synchronous Step-Down
Regulator Sources 3A or Sinks 1.5A
in TSSOP or 3mm Г— 4mm QFN.10
Genesia Bertelle Designing a Solar Cell
Battery Charger.12
Jim Drew High Current/High Speed LED Driver
Revolutionizes PWM Dimming.16
Josh Caldwell Produce High DC/DC Step-Down Ratios
in Tight Spaces with 30ns Minimum
On-Time Controller in 3mm Г— 3mm QFN
.20
Theo Phillips New Generation of 14-Bit 150Msps
ADCs Dissipates a Third the Power …

Linea modelo

Serie: LT3991 (16)

LT3991EDD#PBF LT3991EDD#TRPBF LT3991EMSE#PBF LT3991EMSE#TRPBF LT3991EMSE-3.3#PBF LT3991EMSE-3.3#TRPBF LT3991EMSE-5#PBF LT3991EMSE-5#TRPBF LT3991IDD#PBF LT3991IDD#TRPBF LT3991IMSE#PBF LT3991IMSE#TRPBF LT3991IMSE-3.3#PBF LT3991IMSE-3.3#TRPBF LT3991IMSE-5#PBF LT3991IMSE-5#TRPBF

Clasificación del fabricante

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