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MC34701EK Datasheet

  • MC34701EK

  • Freescale Semiconductor, Inc [1.5 A Switch-Mode Power Suppl...

  • 860.05KB

  • FREESCALE

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Freescale Semiconductor
Technical Data
MC33701
Rev 4.0, 05/2005
1.5 A Switch-Mode Power
Supply with Linear Regulator
The 34701 provides the means to efficiently supply the Freescale
Power QUICC鈩?I, II, and other families of Freescale
microprocessors and DSPs. The 34701 incorporates a high-
performance switching regulator, providing the direct supply for the
microprocessor鈥檚 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 N-channel power MOSFETs to provide
protection features and to allow space-efficient, compact design.
The 34701 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
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Operating Voltage from 2.8 V to 6.0 V
High-Accuracy Output Voltages
Fast Transient Response
Switcher Output Current Up to 1.5 A
Undervoltage Lockout and Overcurrent Protection
Enable Inputs and Programmable Watchdog Timer
Voltage Margining via I
2
C鈩?Bus
Reset with Programmable Power-ON Delay
Pb-Free Packaging Designated by Suffix Code EK
I
2
C is a trademark of Philips Corporation.
34701
POWER SUPPLY
INTEGRATED CIRCUIT
EK (Pb-FREE) SUFFIX
98AARH99137A
32-TERMINAL SOICW
ORDERING INFORMATION
Device
MC34701EK/R2
Temperature
Range (T
A
)
-40 to 85擄C
Package
32 SOICW
2.8 V to 6.0 V Input
34701
VIN2
VBD
VBST
RT
VIN1
LDRV
CS
LDO
LFB
MPC8xxx
RST
BOOT
SW
VOUT
PGND
INV
VDDI
VBST
Adjustable:
0.8 V to VIN -
Dropout
PORESET
Other
Circuits
Adjustable:
0.8 V to VIN -
Dropout
VDDH (I/Os)
ADDR
SDA
SCL
GND
EN1
EN2
CLKSYN
CLKSEL
Optional
FREQ
VDDL (Core)
Figure 1. 34701 Simplified Application Diagram
* This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
漏 Freescale Semiconductor, Inc., 2005. All rights reserved.

MC34701EK 產(chǎn)品屬性

  • 42

  • 集成電路 (IC)

  • PMIC - 穩(wěn)壓器 - 專用型

  • -

  • 轉(zhuǎn)換器，F(xiàn)reescale 電源 QUICC? I，II

  • 2.8 V ~ 6 V

  • 1

  • 可調(diào)

  • -40°C ~ 85°C

  • 表面貼裝

  • 32-SOIC（0.295"，7.50mm 寬）

  • 32-SOIC

  • 管件

  • KIT33701DWBEVB-ND - KIT FOR 33701 POWER SUPPLY

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