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| 型号： | MAX1937EEI+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR PWM HYBRID 28-QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| PWM 型： | 混合物 |
| 输出数： | 1 |
| 频率 - 最大： | 500kHz |
| 占空比： | 50% |
| 电源电压： | 6 V ~ 24 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 85°C |
| 封装/外壳： | 28-QSOP |
| 包装： | 带卷 (TR) |
19-2498; Rev 1; 10/02
ATION
AILABL
EVALU E
AV
KIT
Two-Phase Desktop CPU Core Supply
Controllers with Controlled VID Change
General Description
Features
The MAX1937/MAX1938/MAX1939 comprise a family of
synchronous, two-phase, step-down controllers capable
of delivering load currents up to 60A. The controllers uti-
lize Quick-PWM? control architecture in conjunction with
active load-current voltage positioning. Quick-PWM con-
trol provides instantaneous load-step response, while
programmable voltage positioning allows the converter
to utilize full transient regulation limits, reducing the out-
put capacitance requirement. The two phases operate
180° out-of-phase with an effective 500kHz switching fre-
quency, thus reducing input and output current ripple, as
well as reducing input filter capacitor requirements.
The MAX1937/MAX1938/MAX1939 are compliant with
AMD Hammer, Intel ? ? Voltage-Regulator Module (VRM)
9.0/9.1, and AMD Athlon? Mobile VID code specifica-
tions (see Table 1 for VID codes). The internal DAC pro-
vides ultra-high accuracy of ±0.75%. A controlled VID
voltage transition is implemented to minimize both
undervoltage and overvoltage overshoot during VID
input change.
Remote sensing is available for high output-voltage
accuracy. The MOSFET switches are driven by a 6V
gate-drive circuit to minimize switching and crossover
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±0.75% Output Voltage Accuracy
Instant Load-Transient Response
Up to 90% Efficiency Eliminates Heatsinks
Up to 60A Output Current
8V to 24V Input Range
User-Programmable Voltage Positioning
Controlled VID Voltage Transition
500kHz Effective Switching Frequency
MAX1937: AMD Hammer Compatible
MAX1938: Intel VRM 9.0/9.1 Compatible
MAX1939: AMD Athlon Mobile Compatible
Soft-Start
Power-Good (PWRGD) Output
Cycle-by-Cycle Current Limit
Output Overvoltage Protection (OVP)
R DS(ON) or R SENSE Current Sensing
Remote Voltage Sensing
28-Pin QSOP Package
Ordering Information
conduction losses to achieve efficiency as high as
90%. The MAX1937/MAX1938/MAX1939 feature cycle-
by-cycle current limit to ensure that the current limit is
not exceeded. Crowbar protection is available to pro-
tect against output overvoltage.
PART
MAX1937 EEI
MAX1938 EEI
MAX1939 EEI
TEMP RANGE
-40 ° C to +85 ° C
-40 ° C to +85 ° C
-40 ° C to +85 ° C
PIN-PACKAGE
28 QSOP
28 QSOP
28 QSOP
Applications
Notebook and Desktop Computers
Servers and Workstations
Blade Servers
TOP VIEW
Pin Configuration
High-End Switches
High-End Routers
Macro Base Stations
VID0 1
VID1 2
TIME 3
VID2 4
VID3 5
28 V CC
27 BST1
26 DH1
25 LX1
24 CS1
VID4 6
VPOS 7
V DD 8
ILIM 9
MAX1937
MAX1938
MAX1939
23 DL1
22 VLG
21 PGND
20 DL2
Typical Application Circuits and Functional Diagram appear
at end of data sheet.
Quick-PWM is a trademark of Maxim Integrated Products, Inc.
Athlon is a trademark of Advanced Micro Devices, Inc.
Intel is a registered trademark of Intel Corp.
GND 10
GNDS 11
REF 12
EN 13
FB 14
QSOP
19 CS2
18 LX2
17 DH2
16 BST2
15 PWRGD
________________________________________________________________ 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.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1937EEI-TG069 | 制造商:Maxim Integrated Products 功能描述: |
| MAX1938EEI | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1938EEI-T | 功能描述:DC/DC 开关控制器 RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| MAX1938EEI-TG069 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX1938EVKIT | 功能描述:电源管理IC开发工具 RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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