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MC33394 Datasheet

  • MC33394

  • Swltch Mode Power Supply Wlth Multlple Llnear Regulators and...

  • 408.24KB

  • Motorola   Motorola

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Order this document from Analog Marketing
Rev. 2.5, 11/2002
Switch Mode Power Supply with
Multiple Linear Regulators and
High Speed CAN Transceiver
The 33394 is a multi鈥搊utput power supply integrated circuit with high
speed CAN transceiver. The IC incorporates a switching pre鈥搑egulator
operating over a wide input voltage range from +4.0V to +26.5V (with
transients up to 45V).
The switching regulator has an internal 3.0A current limit and runs in both
buck mode or boost mode to always supply a pre鈥搑egulated output followed
by Low Drop Out (LDO) regulators: VDDH / 5.0V @ 400mA; VDD3_3 / 3.3V
@ 120mA; VDDL / 2.6V (User scalable between 3.3V 鈥?1.25V) @ 400mA
typically, using an external NPN pass transistor. The Keep Alive regulator
VKAM (scalable) @ 50mA; FLASH memory programming voltage VPP /
5.0V or 3.3V @ 150mA; three sensor supply outputs VREF(1,2,3) / 5.0V
(tracking VDDH) @ 100mA each; and a switched battery output (VSEN) to
supply 125mA clamped to 17V.
Additional features include Active Reset circuitry watching VDDH,
VDD3_3, VDDL and VKAM, user selectable Hardware Reset Timer (HRT),
Power Sequencing circuitry guarantees the core supply voltages never
exceed their limits or polarities during system power up and power down.
A high speed CAN transceiver physical layer interfaces between the
microcontroller CMOS outputs and differential bus lines. The CAN driver is
short circuit protected and tolerant of loss of battery or ground conditions.
33394 is designed specifically to meet the needs of modules, which use
the MPC565 microcontroller, though it will also support others from the
MPC5XX family of Motorola microcontrollers.
Features:
鈥?/div>
Wide operating input voltage range: +4.0V to +26.5V (+45V transient).
33394
MULTI鈥揙UTPUT
POWER SUPPLY
SEMICONDUCTOR
TECHNICAL DATA
44鈥揕ead HSOP
DH SUFFIX
CASE 1291
44鈥揕ead QFN
FC SUFFIX
CASE 1310
(BOTTOM VIEW)
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Provides all regulated voltages for MPC5XX MCUs and other ECU鈥檚
logic and analog functions.
Accurate power up/down sequencing.
Provides necessary MCU support monitoring and fail鈥搒afe support.
Provides three 5.0 V buffer supplies for internal & external (short鈥揷ircuit
protected) sensors.
Includes step鈥揹own/step鈥搖p switching regulator to provide supply
voltages during different battery conditions.
Interfaces Directly to Standard 5.0V I/O for CMOS Microprocessors by
means of Serial Peripheral Interface.
PIN CONNECTIONS
INV
VCOMP
VPRE
VPRE_S
VDDH
VREF2
VREF3
DO
SCLK
DI
CS
VBAT
VBAT
KA_VBAT
VIGN
VKAM
/SLEEP
VKAM_FB
HRT
VSEN
CANH
REGON
CANL
WAKEUP
GND
VREF1
CANTXD
VPP_EN
CANRXD
VPP
/PORESET
VDD3_3
/HRESET
VDD3_3FB
/PRERESET
VDDL_X
VDDL_FB
VDDL_B
VDDL_FB
/PRERESET
/HRESET
/PORESET
CANRXD
CANTXD
1
SW1
SW1
SW1
BOOT
SW2G
GND
INV
VCOMP
VPRE
VPRE_S
VDDH
VREF2
VREF3
DO
SCLK
DI
CS
/SLEEP
HRT
CANH
CANL
GND
54鈥揕ead SOICW鈥揈P
DWB SUFFIX
CASE 1377
PIN CONNECTIONS
GND
CANL
CANH
HRT
/SLEEP
N/C
CS
DI
SCLK
DO
N/C
VREF3
VREF2
VDDH
VPRE_S
VPRE
VCOMP
INV
GND
SW2G
BOOT
N/C
SW1
SW1
SW1
SW1
SW1
1
CANTXD
CANRXD
/PORESET
/HRESET
/PRERESET
N/C
VDDL_FB
VDDL_B
VDDL_X
VDD3_3FB
VDD3_3
VPP
VPP_EN
VREF1
WAKEUP
REGON
VSEN
VKAM_FB
VKAM
VIGN
N/C
KA_VBAT
VBAT
VBAT
VBAT
VBAT
VBAT
GND
SW2G
BOOT
SW1
SW1
SW1
VBAT
VBAT
KA_VBAT
VIGN
VKAM
1
SOICW
QFN
HSOP
This document contains information on a new product. Specifications
and information herein are subject to change without notice.
漏
Motorola, Inc. 2002
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
VKAM_FB
VSEN
REGON
WAKEUP
VREF1
VPP_EN
VPP
VDD3_3
VDD3_3FB
VDDL_X
VDDL_B
TOP VIEW
1

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