33702 Datasheet, PDF (1/24 Pages) Motorola, Inc – 3.0 A Switch-Mode Power Supply with Linear Regulator

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 mΩ N-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 (T_A)
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
V^VIN22
VV_II_NN₁1
VB_BDD
VVB_BS_STT
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
V_LDO =
0.8 t o 5. 0 V
(Adj u sta b l e)
VDDH (I/Os)
MMPPCC8X5xXxX
VBS T
V_OUT =
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