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NXP Semiconductors Electronic Components Datasheet

MC33730 Datasheet

Switch Mode Power-Supply

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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 pulse-
width modulation (PWM) voltage mode control. It has a 3.5 A current
limit (typical) and the slew-rate is adjustable via a control pin to reduce
switching noise. The switching regulator has an adjustable frequency
oscillator, which allows the user to optimize its operation over a wide
range of input voltages and component values.
The linear regulators can be configured either as two Normal mode
regulators (VDD3, VDDL) and one standby regulator (VKAM), or as one
Normal mode linear regulator (VDDL) and two standby regulators (VKAM
and VDD3 Standby). Two protected outputs [VREF (1, 2)] are used to
provide power to external sensors.
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 VKAM - 15% accuracy,
operating down to 4.5 V at the KA_VBAT pin
• VDD3 can be programmed as an optional second standby
regulator with 15% accuracy
• Provides two 5.0 V protected supplies for sensors
• Provides reverse battery protection FET gate drive
• Provides necessary MCU monitoring and fail-safe support
SWITCHING POWER SUPPLY
EK SUFFIX (PB-FREE)
98ARL10543D
32-LEAD SOICW-EP
ORDERING INFORMATION
Device
(Add R2 Suffix for
Tape and Reel)
Temperature
Range (TA)
Package
MCZ33730EK
MC33730EK *
- 40 °C to 125 °C
32-SOICW-EP
* Recommended device for all new designs
+
5.0 V
33730
VBAT
+
BOOT
SW
PFD
KA_VBAT
VIGN
IGN_ON
VREF1,2
+
VDDH
INV
VCOMP
VDD3_B
VDD3
P1
P2
P3
CP
GND
HRT
VDDL_B
VDDL
VKAM
5.0V
RSTs
REGON
+
5.0 V
3.3 V
MCU
(32 Bit)
1.5 V
KA_1.0 V
Figure 1. 33730 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Freescale Semiconductor, Inc., 2009 - 2012. All rights reserved.


NXP Semiconductors Electronic Components Datasheet

MC33730 Datasheet

Switch Mode Power-Supply

No Preview Available !

DEVICE VARIATIONS
Table 1. Device Variations
Part no.
MCZ33730EK
MC33730EK
DEVICE VARIATIONS
Temperature Range
- 40 °C to 125 °C
Description
Reset detect circuitry
Improved VDDL and VDD3 reset detect circuitry
33730
2
Analog Integrated Circuit Device Data
Freescale Semiconductor



Part Number MC33730
Description Switch Mode Power-Supply
Maker NXP
Total Page 3 Pages
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MC33730 Datasheet PDF





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