1 Features
• AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature
• Functional safety-compliant device
– Developed for functional safety applications
– Documentation to aid ISO 26262 functional
safety system design up to ASIL-B
– BUCK, LDO and load switch output and
Input supply overvoltage and undervoltage
monitoring
– Q&A Watchdog
– Level or PWM error signal monitor (ESM)
– ABIST and CRC
• Input voltage: 3.3 V nominal (3 V to 4 V range)
• 3 high-efficiency, low noise, high frequency stepdown
DC/DC converters:
– Output voltage: 0.8 V, 0.82 V, 0.9 V to 1.9 V
with 20 mV output voltage step
– Maximum output current: 3.5 A
– Switching frequency: 4.4 MHz, 8.8 MHz, and
17.6 MHz
• 600 mA linear regulator with bypass load switch
mode (LDO_LS1)
– Input voltage, LDO mode: 1.2 V to 4 V
– Output voltage: 0.6 V to 3.4 V with 50 mV
output voltage step
– Input voltage, bypass load switch mode: 1.6 V
to 3.4 V
• 400 mA load switch (LS2)
– Input voltage range: 1.6 V to 3.6 V
– On resistance 3.3-V input, 200 mA: 75 mΩ -typ
• Output short-circuit and overload protection
• Regulator output dynamic voltage scaling (DVS)
through I2C interface
• Input overvoltage protection (OVP) and
undervoltage lockout (UVLO)
• Two general purpose voltage monitors shared with
LDO_LS1 and LS2 output
• Overtemperature warning and protection
• I2C interface supporting standard, fast mode, fastmode+
and optional I2C address selection

2 Applications
• Satellite radar
• Short and medium range corner radar
• Ultra-short range radar
• Long range front radar
• Low ripple, low noise applications

3 Description
The LP8772x-Q1 device is designed to meet the
power management requirements of the AWR, IWR,
and other MMICs in various automotive and industrial
radar applications. The device has three step-down
DC/DC converters, a LDO regulator, and a load
switch. The LDO is powered externally and intended
for supplying Ethernet device or any other device in
the system. The load switch is intended to cut off the
3.3 V IO supply during the sensor sleep mode. The
device is controlled by I2C communication interface
and by enable signals.
The low noise step-down DC/DC converters support
factory programmed switching frequency of 17.6 MHz
or 8.8 MHz or 4.4 MHz. High switching frequency
and low noise across wide frequency range, enables
LDO-free power solution which helps to reduce the
solution cost and improve thermal performance. The
switching clock is forced to PWM mode for excellent
RF performance and can also be synchronized to
an external clock. The LP8772x-Q1 device supports
remote voltage sensing to compensate IR drop
between the regulator output and the point-of-load
(POL) which improves the accuracy of the output
voltage.