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Motorola Electronic Components Datasheet

MC33394 Datasheet

Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver

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Switch Mode Power Supply with
Multiple Linear Regulators and
High Speed CAN Transceiver
The 33394 is a multi–output power supply integrated circuit with high
speed CAN transceiver. The IC incorporates a switching pre–regulator
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–regulated 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 – 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:
Wide operating input voltage range: +4.0V to +26.5V (+45V transient).
Provides all regulated voltages for MPC5XX MCUs and other ECU’s
logic and analog functions.
Accurate power up/down sequencing.
Provides necessary MCU support monitoring and fail–safe support.
Provides three 5.0 V buffer supplies for internal & external (short–circuit
protected) sensors.
Includes step–down/step–up 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
GND
SW2G
BOOT
SW1
SW1
SW1
VBAT
VBAT
KA_VBAT
VIGN
VKAM
1
QFN
TOP VIEW
VBAT
VBAT
KA_VBAT
VIGN
/SLEEP
HRT
CANH
CANL
GND
CANTXD
CANRXD
/PORESET
/HRESET
/PRERESET
VDDL_FB
VKAM
VKAM_FB
VSEN
REGON
WAKEUP
VREF1
VPP_EN
VPP
VDD3_3
VDD3_3FB
VDDL_X
VDDL_B
VDDL_FB
/PRERESET
/HRESET
/PORESET
CANRXD
CANTXD
1
HSOP
SW1
SW1
SW1
BOOT
SW2G
GND
INV
VCOMP
VPRE
VPRE_S
VDDH
VREF2
VREF3
DO
SCLK
DI
CS
/SLEEP
HRT
CANH
CANL
GND
This document contains information on a new product. Specifications
and information herein are subject to change without notice.
© Motorola, Inc. 2002
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
Order this document from Analog Marketing
Rev. 2.5, 11/2002
33394
MULTI–OUTPUT
POWER SUPPLY
SEMICONDUCTOR
TECHNICAL DATA
44–Lead HSOP
DH SUFFIX
CASE 1291
44–Lead QFN
FC SUFFIX
CASE 1310
(BOTTOM VIEW)
54–Lead SOICW–EP
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
SOICW
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
1


Motorola Electronic Components Datasheet

MC33394 Datasheet

Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver

No Preview Available !

33394
To Q3 Figure 1. 33394DH – Simplified Block Diagram and Typical Application
mLf1
Dp1
6.8 H
VBAT
SW1
mL1
47 H
VPRE
D2 5.6 V
+ Dp2
ON
Control
OFF
+
mCf1
10 F
+ 1, 2
mCf2
100 F
KA_VBAT
3
4.7 k VIGN
10 nF
4
Oscillator
Feed
Forward
Ramp
Generator
Buck
Control
Logic
Boost
+
High–Side
Drive
Low–Side
Drive
42–44
Cb
100 nF
BOOT
41
D1
+
mC1
100 F
SW2G Q1
40
GND
39
MTD20N03HDL
2.6 V
10 nF
+
22 mF
VKAM
22 k 5
VKAM_FB
6
20 k
VKAM
Keep–Alive
Adj. Volt.
60 mA
I–Lim
++
Vbg
40 k
INV
38
11.7 k 100 pF
Cc1
Cc3
3.3 nF
Rc2
100 k
Rc3
430R
VSEN
7
REGON
VSEN
VBAT Volt.
125 mA
T–Lim, I–Lim
VCOMP 1.0 nF
37 VPRE
36 VPRE_S
35
Cc2
8
WAKEUP
CANRXD
Enable
9 Sleep
5.0 V
10 nF
VREF1
+ 10
1.0 mF
VREF1
5.0 V
100 mA
LDO
T–Lim, I–Lim
CAN
Wakeup
Logic
Vbg
VDDH
5.0 V
400 mA
LDO
T–Lim, I–Lim
VDDH
34 +
47 mF
5.0 V
10 nF
VPP_EN
5.0 V/3.3 V VPP11
+ 12
m10 nF
47 F
VPP
5.0 V/3.3 V
150 mA
LDO
T–Lim, I–Lim
Band Gap
Reference
VREF2
5.0 V
100 mA
LDO
T–Lim, I–Lim
VREF2
33 +
1.0 mF
5.0 V
10 nF
VDD3_3
VDD3_3
VREF3
3.3 V
+
m VPRE
10 nF 47 F
Q2
MJD31C
VDDL
2.6 V
13
VDD3_FB
14
VQ3
Q3
MJD31C
15
16
17
3.3 V
120 mA
LDO, Pass
T–Lim, I–Lim
VDDL_B VDDL Drive
VDDL_X
Adj. Volt.
40 mA
VDDL_FB Dual Pass
T–Lim
10 nF
+
47 mF
110R
/PRERESET 18
/HRESET 19
100R
/PORESET
20
Reset
Detection
VDDH,
VDD3_3,
VDDL
Standby
Control
High–Speed CAN
Transceiver
5.0 V
100 mA
LDO
T–Lim, I–Lim
16 Bit
SPI
Control
Fault Rep.
Sleep
POR Timer
VKAM
2.6 V
10 k 10 k
10 k
21
CANRXD
22 23
CANTXD
GND
24 25
CANL CANH
120 R
VREF3
32 +
1.0 mF
5.0 V
10 nF
DO
31 SCLK
30
DI
29
CS
28
VDDH
/SLEEP 5.0 V
27
HRT 47 k
26
1.0 mF
Notes: 1. In this configuration the device can operate with a minimum input voltage VBAT of 4.0 V (voltage at 33394 VBAT pins).
Notes: 2.VDDL and VKAM are adjustable to support current microprocessor technology (1.25 V to 3.3 V) by means of an external resistor divider.
Notes: 3. When the 33394 CAN transceiver is not used, CANL and CANH pins can be shorted together.
Notes: 4. Dp1 = reverse battery protection diode. Dp2 = load dump protection diode. Dp1, Dp2 can be ommitted in those applications which do not require such protection.
2 MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA


Part Number MC33394
Description Switch Mode Power Supply with Multiple Linear Regulators and High Speed CAN Transceiver
Maker Motorola Inc
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MC33394 Datasheet PDF






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