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| 型号： | MAX8513EVKIT |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/35页 |
| 文件大小： | 0K |
| 描述： | EVAL KIT FOR MAX8513 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 3，非隔离 |
| 输出电压： | 3.3V，2.5V，12V |
| 电流 - 输出： | 2A，1.5A，100mA |
| 输入电压： | 9 ~ 16 V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 1.4MHz |
| 板类型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX8513 |
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ATION
EVALU
AVAIL
19-3178; Rev 0; 2/04
KIT
ABLE
Wide-Input, High-Frequency, Triple-Output Supplies
with Voltage Monitor and Power-On Reset
General Description
The MAX8513/MAX8514 integrate a voltage-mode
PWM step-down DC-DC controller and two LDO con-
trollers, a voltage monitor, and a power-on reset for the
lowest-cost power-supply and monitoring solution for
xDSL modems, routers, gateways, and set-top boxes.
The DC-DC controller switching frequency can be set
Features
? Low-Cost DC-DC Controller with Two LDOs
? Wide Input Range: 4.5V to 28V
? 300kHz to 1.4MHz Adjustable Switching
Frequency
? Low Noise for High Data-Rate xDSL Applications
with an external resistor from 300kHz to 1.4MHz, to allow
for the optimization of cost, size, and efficiency. For noise-
sensitive applications, the DC-DC controller can also be
synchronized to an external clock, minimizing noise inter-
ference. Operation above 1.1MHz reduces noise for high
?
?
?
?
Synchronizable to External Clock
Adjustable Soft-Start
Lossless Adjustable Foldback Current Limit
Power-On Reset with 140ms Delay
data-rate xDSL applications. An adjustable soft-start and
adjustable foldback current limit provide reliable startup
and fault protection. The DC-DC controller output voltage
can be set externally to a voltage from 1.25V to 5.5V.
Current limiting is accomplished by inductor current sens-
ing for improved efficiency, or by an external sense resis-
tor for better accuracy.
? Adjustable Input Power-Fail Warning for Dying
Gasp
? Selectable Output-Voltage Sequencing or
Output-Voltage Tracking
Ordering Information
The MAX8513/MAX8514s ’ first LDO controller is
designed to provide a low-cost, high-current regulated
output from 0.8V to 5.5V using an N-channel MOSFET or
a low-current output using a low-cost NPN transistor. The
MAX8513’s second regulator can be used to generate
0.8V to 27V output with a low-cost PNP transistor. Both
PART
MAX8513 EEI
MAX8514 EEI
MAX8514AEI
TEMP RANGE
-40 ° C to +85 ° C
-40 ° C to +85 ° C
-40 ° C to +125 ° C
PIN-PACKAGE
28 QSOP
28 QSOP
28 QSOP
LDO regulators can operate either from the DC-DC con-
troller output or from a higher voltage derived with a fly-
back overwinding on the DC-DC converter inductor. The
MAX8514’s second LDO regulator is designed to pro-
vide a negative output with an NPN transistor.
A sequence input allows the outputs to either power up
together, or for the DC-DC regulator to power up first
and each LDO controller to power up in sequence. An
V IN
(4.5V TO 28V)
Functional Diagram
MAX8513
input power-fail output ( PFO ) is provided for input
power-fail warning, such as in dying-gasp applications.
A power-on reset circuit with a 140ms delay is also
included to indicate when all outputs have achieved
ON
OFF
SYNC
STEP-
DOWN
CONTROLLER
V OUT1
(1.25V TO 5.5V)
regulation and stabilized.
Applications
xDSL, Cable, ISDN Modems, and Routers
OUTPUT
POWER-ON RESET
LDO
Wireless Routers
Set-Top Boxes
Automotive Dashboard Electronics
CONTROLLER 1
V OUT2
(0.8V TO V OUT1 )
Pin Configurations appear at end of data sheet.
INPUT POWER-
FAIL MONITOR
LDO
CONTROLLER 2
V OUT3
(0.8V TO 27V)
________________________________________________________________ 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 |
|---|---|
| MAX8514AEI | 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 |
| MAX8514AEI-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 |
| MAX8514EEI | 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 |
| MAX8514EEI-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 |
| MAX8515AEXK | 制造商:Maxim Integrated Products 功能描述:WIDE-INPUT 0.6V SHUNT REGULATOR FOR - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
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