Datasheet > MC34700EPR2

MC34700EPR2

更新时间： 2024-09-17 04:40:51

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
页数	文件大小	规格书
31页	866K
描述
9 to 18V, Quad Output, Integrated MOSFET Power Supply

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MC34700EPR2 数据手册

Document Number: MC34700

Rev. 4, 6/2008

Freescale Semiconductor

Technical Data

9 to 18V, Quad Output, Integrated

MOSFET Power Supply

34700

The 34700 is a compact, high efficiency power supply, with on-chip

power MOSFETs that feature three step down switching regulators

and one low dropout linear regulator. The switching regulators utilize

voltage mode control with external compensation, allowing flexibility in

optimizing the performance of the 34700 for a given application.

POWER SUPPLY

The 34700 is ideal for space constrained applications where

multiple power rails are required and simplicity of design and

implementation of the power supply is necessary. Over-voltage,

under-voltage, over-current, and over-temperature protection features

ensure robust and reliable operation. Fixed switching frequency,

internal soft start, and internal power MOSFETs enable rapid power

supply design and development.

The 34700 is well suited for power supply designs in wide variety of

applications, including set top boxes, cable modems, laser printers,

fax machines, point of sale terminals, small appliances, telecom line

cards, and DVD players.

EP SUFFIX (Pb FREE)

98ASA10800D

32-Pin QFN

Features

5 x 5mm

• Three switching regulators: 2 synchronous and 1 non-synchronous

• One low dropout linear regulator

• Input current capability:

ORDERING INFORMATION

Temperature

Package

• 1.5A continuous on channel 1

• 1.25A continuous on channels 2 and 3

• 400mA continuous on channel 4

Device

Range (T )

MC34700EP/R2

-40°C to 85°C

32 QFN

• Internal power MOSFETs on all channels

• Voltage feed forward on channel 1

• ±1.5% Output voltage accuracy on all channels

• Cycle-by-cycle current limit and short-circuit protection

• Fixed 800kHz switching frequency

• Internal soft start

• Over-voltage, under-voltage, and over-temperature protection

• Open-drain power good output signal

• Separate active-high enable input for each channel

• Pb-free packaging designated by suffix code EP

IN1

9V - 18V

VIN

VIN1

VOUT1 VIN2 VIN3

BST1

SW1

VOUT1

2.0 - 5.25V, 1.5A

VDDI

COMP1

VGREG

PGOOD

FB1

BST2

SW2

VOUT2

0.7 - 3.6V, 1.25A

Power Good

COMP2

MC34700

FB2

BST3

Enable 1

Enable 2

Enable 3

Enable 4

EN1

EN_LDO

VOUT3

SW3

0.7 - 3.6V, 1.25A

COMP3

AGND

GND2

GND3

FB3

LDO_VIN

LDO

VOUT4

0.7 - 3.6V, 0.4A

LDO_FB

Figure 1. MC34700 Simplified Application Diagram

Freescale Semiconductor, Inc. reserves the right to change the detail specifications,

as may be required, to permit improvements in the design of its products.

12 3 4 5 6 7...31

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与MC34700EPR2相关器件

型号	品牌	获取价格	描述	数据表
MC34701	FREESCALE	获取价格	1.5A Switch-Mode Power Supply with Linear Regulator
MC34701EK	FREESCALE	获取价格	1.5 A Switch-Mode Power Supply with Linear Regulator
MC34701EKR2	FREESCALE	获取价格	1.5 A Switch-Mode Power Supply with Linear Regulator
MC34701EKR2	NXP	获取价格	1.5 A SWITCHING REGULATOR, 400 kHz SWITCHING FREQ-MAX, PDSO32, LEAD FREE, PLASTIC, SOICW-3
MC34701EW	FREESCALE	获取价格	1.5A Switch-Mode Power Supply with Linear Regulator
MC34701R2	FREESCALE	获取价格	1.5 A Switch-Mode Power Supply with Linear Regulator
MC34702	FREESCALE	获取价格	3.0A Switch-Mode Power Supply with Linear Regulator
MC34702EK	FREESCALE	获取价格	3.0 A Switch-Mode Power Supply with Linear Regulator
MC34702EKR2	FREESCALE	获取价格	3.0 A Switch-Mode Power Supply with Linear Regulator
MC34703	FREESCALE	获取价格	10A+ Switch-Mode Power Supply with LDO Regulator

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