33730 Datasheet (NXP) - Switch Mode Power-Supply

33730, Switch Mode Power-Supply

Reset detect circuitry Improved VDDL and VDD3 reset detect circuitry 33730 2 Analog Integrated Circuit Device Data Freescale Semiconductor INTERNAL BLOCK DIAGRAM INTERNAL BLOCK DIAGRAM VBAT VBAT KA_VBAT VKAM CP PFD REG ON VIGN IGN_ON VREF1 VREF2 P1 P2 P3 RSTKAM RSTH RST3 RSTL UVLO /OVLO Feed

Freescale Semiconductor Advance Information Document Number: MC33730 Rev.

9.0, 8/2012 Switch Mode Power Supply with Multiple Linear Regulators 33730 The 33730 is a multiple output power supply integrated circuit for automotive applications.

The integrated circuit (IC) incorporates a switching regulator, which operates over a wide input voltage range from 4.5 to 26.5 V.

The step-down switching regulator uses a fixed frequency pulsewidth modulation (PWM) voltage mode control.

It has a 3.5 A cu

33730 Features

* Provides all regulated voltages for Freescale 32-bit microcontroller family

* Adjustable frequency switching buck regulator with slew-rate control

* Power sequencing provided

* Programmable voltages VDDL, VDD3 - 3% accuracy

* Programmable standby regulator V