LMR51606 Series

SIMPLE SWITCHER® power converter with 4.5V-to-65V 0.6A synchronous buck and 25µA quiescent current

Catalog

SIMPLE SWITCHER® power converter with 4.5V-to-65V 0.6A synchronous buck and 25µA quiescent current

Part	Operating Temperature [Max]	Operating Temperature [Min]	Number of Outputs	Mounting Type	Output Configuration	Frequency - Switching	Voltage - Output (Max)	Package / Case	Synchronous Rectifier	Voltage - Input (Max) [Max]	Function	Topology	Voltage - Input (Min) [Min]	Voltage - Output (Min/Fixed)	Current - Output	Output Type	Supplier Device Package
Texas Instruments LMR51606YFDBVR	150 °C	-40 °C	1	Surface Mount	Positive	1.1 MHz	28 V	SOT-23-6		65 V	Step-Down	Buck	4 V	0.8 V	600 mA	Adjustable	SOT-23-6
Texas Instruments LMR51606XFDBVR	150 °C	-40 °C	1	Surface Mount	Positive	400 kHz	28 V	SOT-23-6		65 V	Step-Down	Buck	4 V	0.8 V	600 mA	Adjustable	SOT-23-6

Catalog

SIMPLE SWITCHER® power converter with 4.5V-to-65V 0.6A synchronous buck and 25µA quiescent current

Key Features

• Functional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged industrial applications4-V to 65-V input voltage rangeInput transient protection up to 70-V0.6-A/1-A continuous output current80-ns minimum switching on timeFixed 400-kHz and 1.1-MHz switching frequency–40°C to 150°C junction temperature range98% maximum duty cycleMonotonic start-up with pre-biased outputShort-circuit protection with hiccup modePrecision enable±1.5% tolerance voltage referenceSmall design size and ease of useIntegrated synchronous rectificationInternal compensation for ease of useSOT-23 packageVarious options in pin-to-pin compatible packagePFM and forced PWM (FPWM) optionsPin-to-pin compatible with theLMR16006,LV2862,LMR50410,TPS560430,LMR54406, andLMR54410Create a custom design using the LMR516xx with theWEBENCH® Power DesignerFunctional Safety-CapableDocumentation available to aid functional safety system designConfigured for rugged industrial applications4-V to 65-V input voltage rangeInput transient protection up to 70-V0.6-A/1-A continuous output current80-ns minimum switching on timeFixed 400-kHz and 1.1-MHz switching frequency–40°C to 150°C junction temperature range98% maximum duty cycleMonotonic start-up with pre-biased outputShort-circuit protection with hiccup modePrecision enable±1.5% tolerance voltage referenceSmall design size and ease of useIntegrated synchronous rectificationInternal compensation for ease of useSOT-23 packageVarious options in pin-to-pin compatible packagePFM and forced PWM (FPWM) optionsPin-to-pin compatible with theLMR16006,LV2862,LMR50410,TPS560430,LMR54406, andLMR54410Create a custom design using the LMR516xx with theWEBENCH® Power Designer

Description

The LMR516xx is a wide-V IN, easy-to-use synchronous buck converter capable of driving up to 0.6-A and 1-A load current. With a wide input range of 4 V to 65 V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source. The LMR516xx operates at 400-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR516xx has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components. The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation. The LMR516xx is a wide-V IN, easy-to-use synchronous buck converter capable of driving up to 0.6-A and 1-A load current. With a wide input range of 4 V to 65 V, the device is designed for a wide range of industrial applications for power conditioning from an unregulated source. The LMR516xx operates at 400-kHz and 1.1-MHz switching frequency to support use of relatively small inductors for an optimized design size. The LMR516xx has a PFM version to realize high efficiency at light load and a FPWM version to achieve constant frequency and small output voltage ripple over the full load range. Soft-start and compensation circuits are implemented internally, which allow the device to be used with minimal external components. The device has built-in protection features, such as cycle-by-cycle current limit, hiccup mode short-circuit protection, and thermal shutdown in case of excessive power dissipation.