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MAX8539EEI-T

更新时间： 2024-11-28 13:00:39

品牌	Logo	应用领域
美信 - MAXIM		存储双倍数据速率控制器
页数	文件大小	规格书
24页	457K
描述
Dual Switching Controller, Voltage-mode, 0.07A, 1680kHz Switching Freq-Max, BICMOS, PDSO28, 0.150 INCH, 0.025 INCH PITCH, MO-137AF, QSOP-28

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MAX8539EEI-T 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	SSOP
包装说明：	0.150 INCH, 0.025 INCH PITCH, MO-137AF, QSOP-28	针数：	28
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.81
Is Samacsys：	N	模拟集成电路 - 其他类型：	DUAL SWITCHING CONTROLLER
控制模式：	VOLTAGE-MODE	控制技术：	PULSE WIDTH MODULATION
最大输入电压：	5.5 V	最小输入电压：	4.5 V
标称输入电压：	5 V	JESD-30 代码：	R-PDSO-G28
JESD-609代码：	e0	长度：	9.89 mm
功能数量：	1	端子数量：	28
最高工作温度：	85 °C	最低工作温度：	-40 °C
最大输出电流：	0.07 A	封装主体材料：	PLASTIC/EPOXY
封装代码：	SSOP	封装等效代码：	SSOP28,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	1.73 mm	子类别：	Switching Regulator or Controllers
表面贴装：	YES	切换器配置：	PUSH-PULL
最大切换频率：	1680 kHz	技术：	BICMOS
温度等级：	INDUSTRIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

MAX8539EEI-T 数据手册

19-3141; Rev 0; 1/04

Dual-Synchronous Buck Controllers for Point-of-

Load, Tracking, and DDR Memory Power Supplies

General Description

Features

♦ MAX8537/MAX8539: Complete DDR Supplies

The MAX8537/MAX8539 controllers provide a complete

power-management solution for both double-data-rate

(DDR) and combiner supplies. The MAX8537 and

MAX8539 are configured for out-of-phase and in-phase

DDR power-supply operations, respectively, and gener-

♦ MAX8538: Dual Nontracking Controller

♦ Out-of-Phase (MAX8537/MAX8538) or In-Phase

(MAX8539) Operation

♦ 4.5V to 23V Wide Input Range (Operate Down to

ate three outputs: the main memory voltage (V

), the

DDQ

1.8V Input with External 5V Supply)

tracking sinking/sourcing termination voltage (V ), and

♦ Tracking Supply Maintains V = V

= 1/2 V

DDQ

TTR

the termination reference voltage (V ). The MAX8538

TTR

♦ Adjustable Output from 0.8V to 3.6V with 1%

is configured as a dual out-of-phase controller for point-

of-load supplies. Each buck controller can source or

sink up to 25A of current, while the termination refer-

ence can supply up to 15mA output.

Accuracy

♦ VTTR Reference Sources and Sinks Up to 15mA

♦ 200kHz to 1.4MHz Adjustable Switching

The MAX8537/MAX8538/MAX8539 use constant-

frequency voltage-mode architecture with operating

frequencies of 200kHz to 1.4MHz. An internal high-

bandwidth (25MHz) operational amplifier is used as an

error amplifier to regulate the output voltage. This

allows fast transient response, reducing the number of

output capacitors. An all-N-FET design optimizes effi-

ciency and cost. The MAX8537/MAX8538/MAX8539

have a 1% accurate reference. The second synchro-

nous buck controller in the MAX8537/MAX8539 and the

Frequency

♦ All-Ceramic Design Achievable

♦ >90% Efficiency

♦ Independent POK_ and EN_

♦ Adjustable Soft-Start and Soft-Stop for Each

Output

♦ Lossless Adjustable-Hiccup Current Limit

♦ Output Overvoltage Protection

♦ 28-Pin QSOP Package

VTTR amplifier generate 1/2 V

voltage for V and

DDQ

, and track the V

within 1%.

TTR

DDQ

This family of controllers uses a high-side current-sense

architecture for current limiting. ILIM pins allow the set-

ting of an adjustable, lossless current limit for different

combinations of load current and R

. Alternately,

DSON

more accurate overcurrent limit is achieved by using

a sense resistor in series with the high-side FET.

Overvoltage protection is achieved by latching off the

high-side MOSFET and latching on the low-side MOSFET

when the output voltage exceeds 17% of its set output.

Independent enable, power-good, and soft-start features

enhance flexibility.

Ordering Information

PIN-

PACKAGE

PART

TEMP RANGE

OPERATION

Out-of-phase

tracking

MAX8537EEI -40°C to +85°C 28 QSOP

MAX8538EEI -40°C to +85°C 28 QSOP

MAX8539EEI -40°C to +85°C 28 QSOP

Out-of-phase

nontracking

Applications

DDR Memory Power Supplies

Notebooks and Desknotes

In-phase

tracking

Servers and Storage Systems

Broadband Routers

XDSL Modems and Routers

Power DSP Core Supplies

Power Combiner in Advanced VGA Cards

Networking Systems

Pin Configurations appear at end of data sheet.

RAMBUS Memory Power Supplies

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...24

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与MAX8539EEI-T相关器件

型号	品牌	获取价格	描述	数据表
MAX853C/D	MAXIM	获取价格	Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias
MAX853CSA	MAXIM	获取价格	DC-to-DC Voltage Converter
MAX853CSA+	MAXIM	获取价格	暂无描述
MAX853CSA-T	MAXIM	获取价格	暂无描述
MAX853ESA	MAXIM	获取价格	Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias
MAX853ESA+T	MAXIM	获取价格	Switched Capacitor Regulator, 100kHz Switching Freq-Max, CMOS, PDSO8, PLASTIC, SOP-8
MAX853ISA	MAXIM	获取价格	Low-Noise, Regulated, Negative Charge-Pump Power Supplies for GaAsFET Bias
MAX853ISA+	MAXIM	获取价格	Switched Capacitor Regulator, 120kHz Switching Freq-Max, PDSO8, PLASTIC, SOP-8
MAX853ISA+T	MAXIM	获取价格	Switched Capacitor Regulator, 120kHz Switching Freq-Max, PDSO8, PLASTIC, SOP-8
MAX853ISA-T	MAXIM	获取价格	Switched Capacitor Regulator, 0.005A, 120kHz Switching Freq-Max, BIPolar, PDSO8, PLASTIC,

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