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參數(shù)資料
| 型號(hào)： | PC34703PNB/R2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 18 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PQCC33 |
| 封裝： | 10 X 10 MM, 2.1 MM HEIGHT, 0.8 PITCH, PLASTIC, QFN-33 |
| 文件頁(yè)數(shù)： | 1/46頁(yè) |
| 文件大小： | 2509K |
| 代理商： | PC34703PNB/R2 |
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Document order number:
MC33703
Rev 3.0, 11/2005
Freescale Semiconductor
Technical Data
Freescale Semiconductor, Inc., 2005. All rights reserved.
* This document contains information on a product under development.
Freescale reserves the right to change or discontinue this product without notice.
10 A Switch-Mode Power
Supply with Linear Regulator
The 34703 provides the means to efficiently supply the Power
Quad Integrated Communications Controller (QUICC), and other
families of Freescale microprocessors and DSPs. The 34703
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 low RDS(ON) N-channel power MOSFETs to
provide protection features and to allow space-efficient, compact
design.
The 34703 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
Wide Operating Voltage: 2.8 V to 13.5 V
High-Accuracy Output Voltages
Switcher Output Current Up to 10 A
Undervoltage Lockout
Power Sequencing
Programmable Watchdog Timer
Voltage Margining via I2C Bus
Overcurrent Protection
Reset with Programmable Power-ON Delay
Enable Inputs.
Figure 1. MC34703 Simplified Application Diagram
SWITCHING REGULATOR
PNB SUFFIX
98ASA10705D
33-TERMINAL PQFN
34703
ORDERING INFORMATION
Device
Temperature
Range (TA)
Package
PC34703PNB/R2
-40 to 85°C
33 PQFN
34703
2.8 to 13.5 V
VDDH (I/O)
VDDL (Core)
MCU
POR
VIN1
LDRV
LDO
LFB
ISNS
RESET
SW_A
PGND
INV
CLKSEL
GND
BOOT
VOUT
LCMP
ADDR
VDDI
CLKSYN
FREQ
EN1
SDA
SCL
EN2
VBD
VBST (sense)
VIN2
VBST
SR
SW_B
VBST
COMP
RT
Optional
I2C
Bus
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