LM2650M-ADJ/NOPB ,Synchronous Step-Down DC/DC Converter 24-SOIC -40 to 125 SNVS133C –JUNE 1999–REVISED APRIL 2013(1)PIN DESCRIPTIONSPins Description1, 12 SUB: These pins mak ..
LM2650MX-ADJ ,Synchronous Step-Down DC/DC ConverterApplicationsthresholds. The LM2650 provides nodes for programmingboth thresholds via external resis ..
LM2651MTC-1.8 ,1.5A High Efficiency Switching RegulatorLM2651 1.5A High Efficiency Synchronous Switching RegulatorMarch 2001LM26511.5A High Efficiency Syn ..
LM2651MTC-2.5 ,1.5A High Efficiency Switching RegulatorFeaturesn Ultra high efficiency up to 97%The LM2651 switching regulator provides high efficiencypow ..
LM2651MTC-3.3 ,1.5A High Efficiency Switching RegulatorLM2651 1.5A High Efficiency Synchronous Switching RegulatorMarch 2001LM26511.5A High Efficiency Syn ..
LM2651MTC-3.3/NOPB ,1.5A High Efficiency Switching Regulator 16-TSSOP -40 to 125Features 3 DescriptionThe LM2651 switching regulator provides high-1• Ultrahigh Efficiency up to 97 ..
LM4927SD/NOPB ,2.5 Watt Fully Differential Audio Power Amplifier With Shutdown 8-WSON Electrical Characteristics V = 5VDDThe following specifications apply for V = 5V, A = 1, and 8Ω loa ..
LM4928SD , 1.2 Watt Stereo Fully Differential Audio Amplifier with RF Suppression and Shutdown Low
LM4929MM ,LM4929 Stereo 40mW Low Noise Headphone Amplifier with OCL OutputGeneral Description Key SpecificationsThe LM4929 is an stereo audio power amplifier capable ofj PSR ..
LM4929MMX ,LM4929 Stereo 40mW Low Noise Headphone Amplifier with OCL OutputBlock Diagram®Boomer is a registered trademark of National Semiconductor Corporation. 2004 National ..
LM4930ITL ,Audio Subsystem with Stereo Headphone & Mono Speaker AmplifiersFeaturesTheLM4930employsadvancedtechniquestoreducepowern 16-bit resolution 48kHz stereo DACconsumpt ..
LM4931ITL ,Audio Subsystem with Mono High Efficiency Loudspeaker and Stereo Headphone AmplifiersFeaturesa minimal amount of external components. It is thereforen 18-bit 44.1kHz or 48kHz stereo DA ..
LM2650M-ADJ/NOPB
Synchronous Step-Down DC/DC Converter
LM2650
www.ti.com SNVS133C–JUNE 1999–REVISED APRIL 2013
LM2650 Synchronous Step-Down DC/DC Converter
Checkfor Samples: LM2650
1FEATURES DESCRIPTIONThe LM2650 is a step-down DC/DC converter
Ultra High Efficiencies (95% possible) featuring high efficiency overa 3Ato milliamperes
• High Efficiency Overa 3Ato Milliamperes load range. This feature makes the LM2650 an ideal
Load Range fitin battery-powered applications that demand long
Synchronous Switchingof Internal NMOS battery lifein both run and standby modes.
Power FETs The LM2650 also features a logic-controlled
• Wide Input Voltage Range (4.5Vto 18V) shutdown modein whichit drawsat most 25μA from
the input power supply.
• Output Voltage Adjustable from 1.5Vto 16V Automatic Low-Power Sleep Mode The LM2650 employsa fixed-frequency pulse-width
modulation (PWM) and synchronous rectificationto
• Logic-Controlled Micropower Shutdown (IQSD≤ achieve very high efficiencies.In many applications,
25µ A) efficiencies reach 95%+ for loads around 1A and
• Frequency Adjustable upto 300 kHz exceed 90% for moderateto heavy loads from 0.2A
Frequency Synchronization with External to 2A.
Signal A low-power hysteretic or "sleep" mode keeps
• Programmable Soft-Start efficiencies highat light loads. The LM2650 enters
and exits sleep mode automatically as the load
• Short-Circuit Current Limitingcrosses "sleep in" and "sleep out" thresholds. The
• Thermal Shutdown LM2650 provides nodes for programming both
• Availablein 24-lead Small-Outline Package thresholds via external resistors.A logic input allows
the userto override the automatic sleep feature and
APPLICATIONS keep the LM2650in PWM mode regardlessof the
load level.
• Notebook and Palmtop Personal Computers optional soft-start feature limits current surges
• Portable Data Terminals from the input power supplyat start up and provides
• Modems a simple means of sequencing multiple power
• Portable Instruments supplies.
Global Positioning Devices (GPSs) Battery-Powered Digital Devices
