LM5156QDSSRQ1 TI Switching Voltage Regulators 2.2-MHz wide VIN nonsynchronous boost

1. Features

EC-Q100 qualified for automotive applications
– Temperature grade 1: –40°C to +125°C TA
• Functional Safety-Capable
– Documentation available to aid functional safetysystem design
• Suited for wide input operating range car batteryapplications
– 3.5-V to 60-V Operating range (65-V abs max)
– 2.97-V to 16-V When BIAS = VCC
– Minimum boost supply voltage 1.5 V whenBIAS ≥ 3.5 V
– Input transient protection up to 65 V
– Minimized battery drain
Low shutdown current (IQ ≤ 2.6 μA)
• Low operating current (IQ ≤ 490 μA)
Small solution size and low cost
– Maximum switching frequency of 2.2 MHz
– 12-Pin WSON package (3 mm × 2 mm) withwettable flanks
– Integrated error amplifier allows primary-sideregulation without optocoupler (flyback)
– Minimized undershoot during cranking (start-stop application)
EMI mitigation
– Selectable dual random spread spectrum
– Lead-less package
• Higher efficiency with low-power dissipation
– 100-mV ±7% accurate current limit threshold
– Strong 1.5-A peak standard MOSFET driver
– Supports external VCC supply
• Avoid AM band interference and crosstalk
– Optional clock synchronization
– Dynamically programmable switching frequencyfrom 100 kHz to 2.2 MHz
• Integrated protection features
– Constant peak current limiting over inputvoltage
Optional hiccup mode overload protection (seethe Device Comparison Table)– Programmable line UVLO
– OVP protection
– Thermal shutdown
Accurate ±1% accuracy feedback reference
• Programmable extra slope compensation
Adjustable soft start
• PGOOD indicator

2.Applications

Automotive 12-V or 24-V battery application
• Automotive start-stop application
• High voltage LiDAR power supply
• Multiple-output flyback without optocoupler
• Automotive rear-lights LED bias supply
• Wide input boost, SEPIC, flyback power module

3.Description

The LM5156x-Q1 (LM5156-Q1 and LM51561-Q1)device is a wide input range, non-synchronous boostcontroller that uses peak current mode control. Thedevice can be used in boost, SEPIC, and flybacktopologies.The LM5156x-Q1 device can start up from a 1-cellbattery with a minimum of 2.97 V if the BIAS pin isconnected to the VCC pin. It can operate with theinput supply voltage as low as 1.5 V if the BIAS pin isgreater than 3.5 V

4.Typical Boost Application

5.Pin Configuration and Functions