LM5169-Q1 Series

Automotive 6-V to 120-V Wide VIN, 650-mA DC-DC converter with Fly-Buck™ capability

Catalog

Automotive 6-V to 120-V Wide VIN, 650-mA DC-DC converter with Fly-Buck™ capability

Part	Voltage - Input (Min) [Min]	Number of Outputs	Mounting Type	Package / Case [y]	Package / Case [x]	Package / Case	Function	Frequency - Switching [Max]	Frequency - Switching [Min]	Topology	Voltage - Input (Max) [Max]	Current - Output	Voltage - Output (Min/Fixed)	Operating Temperature [Max]	Operating Temperature [Min]	Output Type	Output Configuration	Voltage - Output (Max) [Max]	Supplier Device Package	Grade	Qualification
Texas Instruments LM5169PDDAR	6 V	1	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	Step-Down	1 MHz	100 kHz	Buck	120 V	650 mA	1.2 V	150 °C	-40 °C	Adjustable	Positive	120 V	8-SO PowerPad
Texas Instruments LM5169FQDDARQ1	6 V	1	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	Step-Down	1 MHz	100 kHz	Buck	120 V	650 mA	1.2 V	150 °C	-40 °C	Adjustable	Positive	120 V	8-SO PowerPad	Automotive	AEC-Q100
Texas Instruments LM5169PQDDARQ1	6 V	1	Surface Mount	3.9 mm	0.154 in	8-PowerSOIC	Step-Down	1 MHz	100 kHz	Buck	120 V	650 mA	1.2 V	150 °C	-40 °C	Adjustable	Positive	120 V	8-SO PowerPad	Automotive	AEC-Q100

Catalog

Automotive 6-V to 120-V Wide VIN, 650-mA DC-DC converter with Fly-Buck™ capability

Key Features

• AEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to +125°C, ambient temperature rangeDesigned for reliability in rugged applicationsWide input voltage range of 6 V to 120 VJunction temperature range: –40°C to +150°CFixed 3-ms internal soft-start timerPeak and valley current-limit protectionInput UVLO and thermal shutdown protectionSuited for scalable automotive HEV/EV power suppliesLow minimum on and off times of 50 nsAdjustable switching frequency up to 1 MHzDiode emulation for high light-load efficiencyAuto mode with low-quiescent current (< 10 µA)FPWM for fly-buck converter capability3-µA shutdown quiescent currentPin-to-pin compatible withLM5164-Q1,LM5163-Q1,LM5017,LM5013-Q1andLM34927Integration reduces solution size and costCOT mode control architectureIntegrated 1.9-Ω NFET buck switchIntegrated 0.71-Ω NFET synchronous rectifier1.2-V internal voltage referenceNo loop compensation componentsInternal VCCbias regulator and boot diodeOpen-drain power-good indicatorSOIC PowerPAD™ integrated circuit packageAEC-Q100-qualified for automotive applicationsDevice temperature grade 1: –40°C to +125°C, ambient temperature rangeDesigned for reliability in rugged applicationsWide input voltage range of 6 V to 120 VJunction temperature range: –40°C to +150°CFixed 3-ms internal soft-start timerPeak and valley current-limit protectionInput UVLO and thermal shutdown protectionSuited for scalable automotive HEV/EV power suppliesLow minimum on and off times of 50 nsAdjustable switching frequency up to 1 MHzDiode emulation for high light-load efficiencyAuto mode with low-quiescent current (< 10 µA)FPWM for fly-buck converter capability3-µA shutdown quiescent currentPin-to-pin compatible withLM5164-Q1,LM5163-Q1,LM5017,LM5013-Q1andLM34927Integration reduces solution size and costCOT mode control architectureIntegrated 1.9-Ω NFET buck switchIntegrated 0.71-Ω NFET synchronous rectifier1.2-V internal voltage referenceNo loop compensation componentsInternal VCCbias regulator and boot diodeOpen-drain power-good indicatorSOIC PowerPAD™ integrated circuit package

Description

The LM5169 -Q1 and LM5168 -Q1 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM516x -Q1 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications. With integrated high-side and low-side power MOSFETs, the LM5169 -Q1 delivers up to 0.65-A of output current and the LM5168 -Q1 delivers up to 0.3-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x -Q1 is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated fly-buck converter applications. Auto mode enables ultra-low IQand diode emulation mode operation for high light-load efficiency. The LM5169 -Q1 and LM5168 -Q1 synchronous buck converters are designed to regulate over a wide input voltage range, minimizing the need for external surge suppression components. A minimum controllable on time of 50 ns facilitates large step-down conversion ratios, enabling the direct step-down from a 48-V nominal input to low-voltage rails for reduced system complexity and solution cost. The LM516x -Q1 operates during input voltage dips as low as 6 V, at nearly 100% duty cycle if needed, making it an excellent choice for wide input supply range industrial and high cell count battery pack applications. With integrated high-side and low-side power MOSFETs, the LM5169 -Q1 delivers up to 0.65-A of output current and the LM5168 -Q1 delivers up to 0.3-A of output current. A constant on-time (COT) control architecture provides nearly constant switching frequency with excellent load and line transient response. The LM516x -Q1 is available in FPWM or auto mode versions. FPWM mode provides forced CCM operation across the entire load range supporting isolated fly-buck converter applications. Auto mode enables ultra-low IQand diode emulation mode operation for high light-load efficiency.