Datasheet > MC34700_09

MC34700_09

更新时间： 2024-11-07 11:09:03

品牌	Logo	应用领域
飞思卡尔 - FREESCALE		/
页数	文件大小	规格书
28页	1602K
描述
9.0 to 18 V, Quad Output, Integrated MOSFET Power Supply

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MC34700_09 数据手册

Document Number: MC34700

Rev. 5.0, 10/2009

Freescale Semiconductor

Technical Data

9.0 to 18 V, Quad Output,

Integrated MOSFET Power

Supply

MC34700

POWER SUPPLY

98ASA10800D

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

power MOSFETs that features 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.

32-Pin QFN, 5 x 5mm

ORDERING INFORMATION

Temperature

Package

Device

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.

Range (T )

MC34700EP/R2

-40°C to 85°C

32 QFN

Features

• Three switching regulators: 2 synchronous and 1 non-

synchronous

• One low dropout linear regulator

• Output current capability:

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.

• 1.5 A continuous on channel 1

• 1.25 A continuous on channels 2 and 3

• 400 mA continuous on channel 4

• 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 800 kHz switching frequency

• Internal soft-start

Typical Applications:

• Set Top Boxes and Receivers

• Cable Modems

• Networking Cards

• Telecom Line Cards

• 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

MC34700

IN1

9 V - 18 V

VIN

VIN1

VOUT1 VIN2 VIN3

BST1

SW1

VOUT1

2.0 - 5.25 V, 1.5 A

VDDI

COMP1

VGREG

PGOOD

FB1

BST2

SW2

VOUT2

0.7 - 3.6 V, 1.25 A

COMP2

FB2

Enable 1

Enable 2

Enable 3

Enable 4

EN1

EN_LDO

BST3

SW3

VOUT3

0.7 - 3.6 V, 1.25 A

COMP3

AGND

GND2

GND3

FB3

LDO_VIN

LDO

VOUT4

0.7 - 3.6 V, 0.4 A

LDO_FB

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...28

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与MC34700_09相关器件

型号	品牌	获取价格	描述	数据表
MC34700EP	FREESCALE	获取价格	9 to 18V, Quad Output, Integrated MOSFET Power Supply
MC34700EP/R2	FREESCALE	获取价格	9.0 to 18 V, Quad Output, Integrated MOSFET Power Supply
MC34700EPR2	FREESCALE	获取价格	9 to 18V, Quad Output, Integrated MOSFET Power Supply
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

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