LM3488 Series

2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators

Catalog

2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators

Part	Mounting Type	Output Phases	Output Type	Voltage - Supply (Vcc/Vdd) [Max]	Voltage - Supply (Vcc/Vdd) [Min]	Frequency - Switching [Max]	Frequency - Switching [Min]	Control Features	Number of Outputs	Output Configuration	Package / Case	Package / Case [custom]	Package / Case	Topology	Function	Duty Cycle (Max) [Max]	Operating Temperature [Min]	Operating Temperature [Max]
Texas Instruments LM3488MM/NOPB	Surface Mount	1	Transistor Driver	40 V	2.97 V	1 MHz	100 kHz	Enable Frequency Control	1	Positive	8-MSOP 8-TSSOP	0.118 in	3 mm	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	100 %	-40 °C	125 ¯C
Texas Instruments LM3488MM	Surface Mount	1	Transistor Driver	40 V	2.97 V	1 MHz	100 kHz	Enable Frequency Control	1	Positive	8-MSOP 8-TSSOP	0.118 in	3 mm	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	100 %	-40 °C	125 ¯C
Texas Instruments LM3488MMX/NOPB	Surface Mount	1	Transistor Driver	40 V	2.97 V	1 MHz	100 kHz	Enable Frequency Control	1	Positive	8-MSOP 8-TSSOP	0.118 in	3 mm	Boost Flyback SEPIC	Step-Up Step-Up/Step-Down	100 %	-40 °C	125 ¯C

Catalog

2.97V to 40V Wide Vin Low-Side N-Channel Controller for Switching Regulators

Key Features

• Automotive Grade Product, AEC-Q100 Qualified8-Lead VSSOP PackageInternal Push-Pull Driver With 1-A Peak Current CapabilityCurrent Limit and Thermal ShutdownFrequency Compensation Optimized With a Capacitor and a ResistorInternal Soft-StartCurrent Mode OperationUndervoltage Lockout With HysteresisKey Specifications:Wide Supply Voltage Range of 2.97 V to 40 V100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency±1.5% (Overtemperature) Internal Reference5-µA Shutdown Current (Overtemperature)Create a Custom Design Using the LM3488 with theWEBENCH Power DesignerAutomotive Grade Product, AEC-Q100 Qualified8-Lead VSSOP PackageInternal Push-Pull Driver With 1-A Peak Current CapabilityCurrent Limit and Thermal ShutdownFrequency Compensation Optimized With a Capacitor and a ResistorInternal Soft-StartCurrent Mode OperationUndervoltage Lockout With HysteresisKey Specifications:Wide Supply Voltage Range of 2.97 V to 40 V100-kHz to 1-MHz Adjustable and Synchronizable Clock Frequency±1.5% (Overtemperature) Internal Reference5-µA Shutdown Current (Overtemperature)Create a Custom Design Using the LM3488 with theWEBENCH Power Designer

Description

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.