• Input Voltage Range: 2.8V-6V
• Up to 3A Continuous Output Current
• Low Shutdown Current: 0.7uA
• 0.6±1% Feedback Reference Voltage
• 2.1MHz Switching Frequency
• Integrated 25mΩ High-Side and 20mΩ Low-
Side Power MOSFETs
• Adjustable output voltage from 0.6V to 5V
• Active output discharge
• Programmable Soft Start Time
• Power Good Indicator
• Integrated Protection Feature
- Cycle-by-cycle current limit
- Under-voltage Lockout
- HICCUP Over Current Protection
- Thermal Shutdown Protection:160°C
• QFN-8L 1.5mm*2mm Package
• Available in a Wettable Flank Package

• Functional Safety-Capable
Documentation available to aid functional safety
system design
• Suited for wide input operating range battery
applications
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 when
BIAS ≥ 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)
Integrated error amplifier allows primary-side
regulation without optocoupler (flyback)
• 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 frequency
from 100 kHz to 2.2 MHz
• Integrated protection features
Constant peak current limiting over input
voltage
Optional hiccup mode overload protection (see
the Device Comparison Table)
Programmable line UVLO
OVP protection
Thermal shutdown
• ±1% accuracy feedback reference
• Supports additional slope compensation
• Programmable soft start
• PGOOD indicator
• Create a custom design using the LM5156x with
the WEBENCH® power designer
