Datasheet > BD3539HFN

BD3539HFN

更新时间： 2024-02-29 01:22:36

品牌	Logo	应用领域
罗姆 - ROHM		光电二极管
页数	文件大小	规格书
12页	402K
描述
Terminator Support Circuit, PDSO8, 3 X 2.90 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, HSON-8

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中文翻译

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BD3539HFN 数据手册

High-performance Regulator IC Series for PCs

Termination Regulators

for DDR-SDRAMs

BD3539HFN, BD3539FVM, BD3539NUV

No.09030EBT03

●Description

BD3539HFN/FVM/NUV is a termination regulator compatible with JEDEC DDR-SDRAM, which functions as a linear power

supply incorporating an N-channel MOSFET and provides a sink/source current capability up to 1A respectively. A built-in

high-speed OP-AMP specially designed offers an excellent transient response. Requires 3.3 volts or 5.0 volts as a bias

power supply to drive the N-channel MOSFET. Has an independent reference voltage input pin (VDDQ) and an

independent feedback pin (VTTS) to maintain the accuracy in voltage required by JEDEC, and offers an excellent output

voltage accuracy and load regulation. Also has a reference power supply output pin (VREF) for DDR-SDRAM or a memory

controller. When EN pin turns to “Low”, VTT output becomes “Hi-Z” while VREF output is kept unchanged, compatible with

“Self Refresh” state of DDR-SDRAM.

●Features

1) Incorporates a push-pull power supply for termination (VTT)

2) Incorporates a reference voltage circuit (VREF)

3) Incorporates an enabler

4) Incorporates an undervoltage lockout (UVLO)

5) Employs HSON8 package :2.9×3.0×0.6(mm) : BD3539HFN

6) Employs MSOP8 package : 2.9×4.0×0.9(mm) : BD3539FVM

7) Employs VSON8 package : 2.0×3.0×0.6(mm) : BD3539NUV

8) Incorporates a thermal shutdown protector (TSD)

9) Operates with input voltage from 2.7 to 5.5 volts

10) Compatible with Dual Channel (DDR3)

●Applications

Power supply for DDR3- SDRAM

●Absolute maximum ratings

Parameter

BD3539HFN

BD3539FVM

BD3539NUV

Symbol

VCC

VEN

VTT_IN

VDDQ

ITT

Unit

Input Voltage

7^*1*2

Enable Input Voltage

Termination Input Voltage

VDDQ Reference Voltage

Output Current

7^*1*2

270.0^*7

616.1^*8

1770.5^*9

1790.8^*10

Power Dissipation1

Power Dissipation2

Power Dissipation3

Power Dissipation4

Operating Temperature Range

Storage Temperature Range

Pd1

630*³

1350*⁴

1750*⁵

437.5^*6

℃

Pd2

Pd3

Pd4

Topr

-30～+100

-55～+150

+150

Tstg

℃

Maximum Junction Temperature

Tjmax

℃

*1 Should not exceed Pd.

*2 Instantaneous surge voltage, back electromotive force and voltage under less than 10% duty cycle.

*3 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 1-layer board (copper foil density 0.2%), θja=198.4℃/W

*4 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 1-layer board (copper foil density 7%), θja=92.4℃/W

*5 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 1-layer board (copper foil density 65%), θja=71.4℃/W

*6 With Ta≧25℃ (With no heat sink) θja=286℃/W

*7 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate board (when don’t mounted on a heat radiation board ), θja=463℃/W

*8 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 1-layer board,θja=202.9℃/W

*9 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 4-layers board, (copper foil area : 6.28mm²)

which has copper foil in each layer, θja=70.6℃/W

*10 With Ta≧25℃ when mounting a 70mm×70mm×1.6mm glass-epoxy substrate 4-layers board, (copper foil area : 5505mm²)

which has copper foil in each layer, θja=69.8℃/W

www.rohm.com

2009.04 - Rev.B

1/12

12 3 4 5 6 7...12

中文翻译

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与BD3539HFN相关器件

型号	品牌	获取价格	描述	数据表
BD3539HFN-E2	ROHM	获取价格	Terminator Support Circuit, 3 X 2.90 MM, 0.60 MM HEIGHT, LEAD FREE, HSON-8
BD3539HFN-TR	ROHM	获取价格	Terminator Support Circuit, PDSO8, 3 X 2.90 MM, 0.60 MM HEIGHT, ROHS COMPLIANT, HSON-8
BD3539NUV	ROHM	获取价格	Terminator Support Circuit, PDSO8, 3 X 2 MM, 0.60 MM PITCH, ROHS COMPLIANT, VSON-8
BD3539NUV-TR	ROHM	获取价格	Terminator Support Circuit, PDSO8, 3 X 2 MM, 0.60 MM PITCH, ROHS COMPLIANT, VSON-8
BD3539NUX	ROHM	获取价格	Termination Regulators for DDR-SDRAMs
BD353N	THINKISEMI	获取价格	35 Ampere Standard Type Negative Block Rectifier Diodes for Automotive Alternators
BD353P	THINKISEMI	获取价格	35 Ampere Standard Type Negative Block Rectifier Diodes for Automotive Alternators
BD354	ETC	获取价格	TRANZYSTORY
BD3540NUV	ROHM	获取价格	Nch FET Ultra LDOs for Desktop PCs Chipsets with Power Good
BD3540NUV_09	ROHM	获取价格	Nch FET Ultra LDOs for Desktop PCs Chipsets with Power Good

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