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Motorola Electronic Components Datasheet

33702 Datasheet

3.0 A Switch-Mode Power-Supply

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Freescale Semiconductor, Inc.
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document from Analog Marketing: MC33702/D
Rev 0, 05/2003
Preliminary Information
3.0 A Switch-Mode Power Supply
with Linear Regulator
The 33702 provides the means to efficiently supply the Power QUICC™ I,
II, and other families of Motorola microprocessors and DSPs. The 33702
incorporates a high-performance switching regulator, providing the direct
supply for the microprocessor’s core, and a low dropout (LDO) linear regulator
control circuit providing the microprocessor I/O and bus voltage.
The switching regulator is a high-efficiency synchronous buck regulator with
integrated 50 mN-channel power MOSFETs to provide protection features
and to allow space-efficient, compact design.
The 33702 incorporates many advanced features; e.g., precisely
maintained up/down power sequencing, ensuring the proper operation and
protection of the CPU and power system.
Features
• Operating Voltage: 2.8 V to 6.0 V
• High-Accuracy Output Voltages
• Fast Transient Response
• Switcher Output Current Up to 3.0 A
• Undervoltage Lockout
• Power Sequencing
• Programmable Watchdog Timer
• Voltage Margining via I2C™ Bus
• Overcurrent Protection
• Reset with Programmable Power-ON Delay
• Enable Inputs
I2C is a trademark of Phillips Corporation.
33702
POWER SUPPLY
INTEGRATED CIRCUIT
DWB SUFFIX
CASE 1324-02
32-LEAD SOICW
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
PC33702DWB/R2 -40 to 85°C
32 SOICW
Op ti on a l
33702 Simplified Application Diagram
22..88VVtoto1 36. 5.0VVIn put
M3C337307023
VVIN22
VVIINN11
VBBDD
VVBBSSTT
SR
RT
LD RV
CS
LDO
ADD R
SDA
SCL
GND
LFB
RES ET
BO OT
EN1
EN2
SW
CLKS YN VVOOUUTT
CLKS EL PG ND
FR E Q
I NV
O the r
Ci r cuits
VLDO =
0.8 t o 5. 0 V
(Adj u sta b l e)
VDDH (I/Os)
MMPPCC88X5xXxX
VBS T
VOUT =
0.8 to 5.0 V
(Adjus table)
PORESET
VDDL (Core)
This document contains information on a product under development.
Motorola reserves the right to change or discontinue this product without notice.
© Motorola, Inc. 2003
For More Information On This Product,
Go to: www.freescale.com


Motorola Electronic Components Datasheet

33702 Datasheet

3.0 A Switch-Mode Power-Supply

No Preview Available !

Freescale Semiconductor, Inc.
VVIINN11
VVBBSSTT
VBBDD
EN1
EN2
RESET
RT
ADDR
VIINN
8.0V
Boost
Control
Reset
Control
POR
Timer
I2C
Control
VVBBSSTT
Power
Vref Enable
VVDDDDII
Vref
Bandgap
Voltage
Vref Reference
VVDDDDII
Internal
Supply
VVDDDDII
VBBSSTT
VVDDDDII
VVDDDDII
Linear
Regulator
Control
Vref I-LlIiMm
Reset
SysCon
INV
LFB
Thermal
Limit
Power
Sequencing
VVLLDDOO PPWoRw.SSeeqq..
Power
Down UVLO
Voltage Margining
WWat-cdhodgogTimTimerer
VVOOUUTT
VVBSSTT
Current
Limit
I2C
Control
VVDDDDII
Buck
HS
SysCon
SoftSt
Buck
Control
Logic
&
LS
Driver
VVDDDII
LDRV
CS
LDO
LFB
Q4 LCMP
VVBBSSTT
BOOT
VVIINN22
(2)
Q1
SW
(2)
Q2
SDA
SCL
I2C
Interface
Switcher
Oscillator
300kHz
Slope
Comp.
PWM
Comp.
+
-
Error
Amp.
To Reset
+ 0.8V Control
-
PGND
(2)
INV
VOOUUTT
PPWoRw.Seq.
Seq.
Q3 VOOUUTT
CLKSEL CLKSYN FREQ
PGND (4)
Figure 1. 33702 Simplified Block Diagram
33702
2
For More Information OMnOTTOhRiOsLPArAoNdAuLOcGt,INTEGRATED CIRCUIT DEVICE DATA
Go to: www.freescale.com


Part Number 33702
Description 3.0 A Switch-Mode Power-Supply
Maker Motorola Inc
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