参数资料
| 型号： | MC34703PNB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 1/46页 |
| 文件大小： | 0K |
| 描述： | IC POWER SUPPLY QUICC 33-QFN |
| 标准包装： | 1 |
| 应用： | 电源 |
| 电流 - 电源： | 60mA |
| 电源电压： | 2.8 V ~ 13.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 33-PowerQFN |
| 供应商设备封装： | 33-PQFN（10x10） |
| 包装： | 管件 |
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Freescale Semiconductor
Technical Data
10 A + Switch-Mode Power
Supply with LDO Regulator
The 34703 integrated power supply IC is designed to support the
PowerQUICC? family of MCUs as well as other MCUs and DSPs
requiring a high current core supply. The 34703 incorporates a high-
performance switching regulator for the microprocessor’s core
supply, and a low-dropout (LDO) linear regulator control circuit to
provide I/O and bus voltage.
The switching regulator is an efficient synchronous buck converter
with integrated low R DS(ON) high side and low side FETs.
Temperature and current sensing is built in and provides protection
for the IC as well as the external circuitry.
The 34703 incorporates specific advanced protection features for
use with high power processors and controllers, including power-up
and power-down sequencing of the I/O and core supply voltages in
relation to each other.
Features
? Wide input Operating Voltage Range: 2.8 V to 13.5 V
? Adjustable Output Voltages
? Continuous Core Voltage Supply Currents up to 10 A (with
infrequent excursions to 12 A permitted)
? Undervoltage Lockout
Document Number: MC34703
Rev. 5.0, 8/2006
34703
INTEGRATED POWER SUPPLY IC
PNB SUFFIX
98ASA10705D
33-PIN PQFN
ORDERING INFORMATION
? Selectable Power Sequencing
? Programmable Watchdog Timer
? Voltage Margining via I 2 C Bus
? Overcurrent Protection
Device
MC34703PNB/R2
Temperature
Range (T A )
-40 to 85°C
Package
33 PQFN
? Reset with Programmable Power-ON Delay
2.8 to 13.5 V
34703
VIN2
VBST
VBST (sense)
VBD
FREQ
CLKSYN
VIN1
LDRV
ISNS
LDO
LCMP
SR
LFB
MCU
VDDH (I/O)
I2C
Bus
SDA
SCL
EN1
RESET
BOOT
SW_A
VBST
POR
VDDL (Core)
EN2
SW_B
Optional
CLKSEL
VOUT
COMP
ADDR
INV
VDDI
RT
Figure 1. MC34703 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
? Freescale Semiconductor, Inc., 2006. All rights reserved.
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| MC34704AEP | 功能描述:开关变换器、稳压器与控制器 DSC8 PASS.1.3 RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34704AEPR2 | 功能描述:开关变换器、稳压器与控制器 DSC8 PASS1.3 TAPE RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34704BEP | 功能描述:开关变换器、稳压器与控制器 5CH DC-DC PWR MANGMNET I RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34704BEPR2 | 功能描述:开关变换器、稳压器与控制器 5CH DC-DC PWR MANGMNET RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34705 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 12WAY 制造商:SPC Multicomp 功能描述:HEADER, VERTICAL, 12WAY |
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