Document
A4410
Adjustable Frequency Buck or Buck/Boost Pre-Regulator with a Synchronous Buck, 3 Internal LDOs, Window Watchdog Timer, and NPOR
FEATURES AND BENEFITS
• Automotive AEC-Q100 qualified • 2.8 VIN to 36 VIN operating range, 40 VIN maximum • Buck or buck/boost pre-regulator (VREG) • Adjustable PWM switching frequency: 250 kHz –
2.4 MHz • PWM frequency can be synchronized to external clock • 1.25 V/750 mADC/1 APEAK synchronous buck (1V25) • 3.3 V (3V3) and 5 V (V5) internal LDO regulators with
fold back short circuit protections • 5 V (V5P) internal tracking LDO regulator with fold
back short circuit and short-to-battery protections • TRACK sets either 3V3 or V5 as the reference for V5P • Power-on reset with fixed delay of 15 ms for 1V25/3V3
UV and OV protection (NPOR) • Programmable watchdog timer with a 30 ms activation
delay • Active low, watchdog timer enable/disable pin (WDENn) • Dual band gaps for increased reliability: BGVREF,
BGFAULT Co.