LM3488

AKTIV

N-Kanal-Low-Side-Controller, Großer Vin-Bereich, 2,97 bis 40 V, für Schaltregler

Jetzt bestellen

Datenblatt

document-pdfAcrobat LM3488/-Q1 Automotive High-Efficiency Controller for Boost, SEPIC and Fly-Back DC-DC Converters datasheet (Rev. O) (Englisch) PDF | HTML

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Alternativen vergleichen

Selbe Funktionalität wie der verglichene Baustein bei abweichender Anschlussbelegung.

LM5155

AKTIV

2,2-MHz-MOSFET-Treiber mit breitem VIN-Bereich, 1,5 A, nicht synchronem Aufwärtsregler Up to 2.2-MHz Fsw, higher efficiency and up to 45-V input operating voltage.

LM3488

AKTIV

Jetzt bestellen

Produktdetails

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

40

Vin (min) (V)

2.97

Vout (max) (V)

500

Vout (min) (V)

1.26

Control mode

current mode

Features

Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Prebias startup

Duty cycle (max) (%)

100

Iq (typ) (A)

0.0027

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

40

Vin (min) (V)

2.97

Vout (max) (V)

500

Vout (min) (V)

1.26

Control mode

current mode

Features

Adjustable current limit, Enable, Frequency synchronization, Light-load efficiency, Nonsynchronous rectification, Prebias startup

Duty cycle (max) (%)

100

Iq (typ) (A)

0.0027

Operating temperature range (°C)

-40 to 125

VSSOP (DGK)

8

14.7 mm² (3 mm × 4.9 mm)

Automotive Grade Product, AEC-Q100 Qualified
8-Lead VSSOP Package
Internal Push-Pull Driver With 1-A Peak Current Capability
Current Limit and Thermal Shutdown
Frequency Compensation Optimized With a Capacitor and a Resistor
Internal Soft-Start
Current Mode Operation
Undervoltage Lockout With Hysteresis
Key Specifications:
- Wide Supply Voltage Range of 2.97 V to 40 V
- 100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency
- ±1.5% (Overtemperature) Internal Reference
- 5-µA Shutdown Current (Overtemperature)
Create a Custom Design Using the LM3488 with the WEBENCH Power Designer

Automotive Grade Product, AEC-Q100 Qualified
8-Lead VSSOP Package
Internal Push-Pull Driver With 1-A Peak Current Capability
Current Limit and Thermal Shutdown
Frequency Compensation Optimized With a Capacitor and a Resistor
Internal Soft-Start
Current Mode Operation
Undervoltage Lockout With Hysteresis
Key Specifications:
- Wide Supply Voltage Range of 2.97 V to 40 V
- 100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency
- ±1.5% (Overtemperature) Internal Reference
- 5-µA Shutdown Current (Overtemperature)
Create a Custom Design Using the LM3488 with the WEBENCH Power Designer

The LM3488 is a versatile low-side N-FET high-performance controller for switching regulators. This device is suitable for use in topologies requiring low-side FET, such as boost, flyback, or SEPIC. Moreover, the LM3488 can be operated at extremely high switching frequency to reduce the overall solution size. The switching frequency of LM3488 can be adjusted to any value from 100 kHz to 1 MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.

The LM3488 has built-in features such as thermal shutdown, short-circuit protection, and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5 µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.

The LM3488 is a versatile low-side N-FET high-performance controller for switching regulators. This device is suitable for use in topologies requiring low-side FET, such as boost, flyback, or SEPIC. Moreover, the LM3488 can be operated at extremely high switching frequency to reduce the overall solution size. The switching frequency of LM3488 can be adjusted to any value from 100 kHz to 1 MHz by using a single external resistor or by synchronizing it to an external clock. Current mode control provides superior bandwidth and transient response, besides cycle-by-cycle current limiting. Output current can be programmed with a single external resistor.

The LM3488 has built-in features such as thermal shutdown, short-circuit protection, and overvoltage protection. Power-saving shutdown mode reduces the total supply current to 5 µA and allows power supply sequencing. Internal soft-start limits the inrush current at start-up.

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Technische Dokumentation

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*	Datenblatt	LM3488/-Q1 Automotive High-Efficiency Controller for Boost, SEPIC and Fly-Back DC-DC Converters datasheet (Rev. O)	PDF \| HTML	06.07.2015
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	Anwendungshinweis	AN-1990 Compensation for Current Mode Control SEPIC Converters (Rev. A)		23.04.2013
	Anwendungshinweis	Modeling & Design of Current Mode Control Boost Converters (Rev. B)		23.04.2013

Design und Entwicklung

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