The MAX16920BATJ/V+ from Maxim Integrated Products is an automotive power management IC with three step-down converters and linear regulator 32 TQFN. It integrates three high voltage step-down DC to DC converters, one high voltage linear regulator and an overvoltage protection block. The three step-down converters deliver up to 150mA, 600mA and 1.5A while the linear regulator is capable of up to 150mA. The MAX16920BATJ/V+ is designed to operate with input voltages between 5.5V to 28V and survive voltage transients to 45V, making it ideal for automotive applications. It is optimized for high efficiency and low standby current. It can be ordered with spread spectrum frequency modulation. Device includes power-good outputs (PG_) for DC-DC2, DC-DC3, LDOA and a power-on reset (active-low POR) for DC-DC1. All regulators other than DC-DC1 have an enable input (EN_). DC-DC1 always operates when power is applied to MAX16920. It is used in automotive radios, automotive navigation systems.
Feature
- Automotive AEC-Q100 grade 1 qualified, 2.2MHz switching frequency, 7.5ms active-low POR delay
- Internal soft start, ±2% undervoltage comparator, overtemperature shutdown
- Three high voltage buck converters with high efficiency
- DC-DC1: 150mA (max), always-on, 3.3V fixed or adjustable from 1.22V to 5V
- DC-DC2: 600mA (max), 5V fixed or adjustable output voltage from 1.22V to 5V
- DC-DC3: 1.5A (max), 3.3V fixed or adjustable from 1.22V to 8V
- One high voltage 5V linear regulator (150mA)
- PMOS driver output with fixed overvoltage shutdown, operating temperature range from -40°C to +125°C
- Frequency synchronization input, enable inputs for DC-DC2, DC-DC3 and LDO
- DC to DC converters can also be synchronized to an external frequency reference using SYNC input
Applications
- Automotive Navigation Systems
- Automotive Radios
