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| 型号： | MAX15049ETJ+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/31页 |
| 文件大小： | 0K |
| 描述： | IC CTRLR PWM STP-DN TRIPL 32WQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 应用： | 电源控制器，序列发生器 |
| 电源电压： | 4.7 V ~ 23 V |
| 电流 - 电源： | 6mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-WFQFN 裸露焊盘 |
| 供应商设备封装： | 32-TQFN-EP（5x5） |
| 包装： | 管件 |
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EVALUATION KIT AVAILABLE
MAX15048/MAX15049
Triple-Output Buck Controllers
with Tracking/Sequencing
Ordering Information
General Description
The MAX15048/MAX15049 are triple-output pulse-width
modulated (PWM), step-down, DC-DC controllers with
tracking (MAX15048) and sequencing (MAX15049)
options. The devices operate over the 4.7V to 23V input-
voltage range. Each PWM controller provides an adjustable
output down to 0.6V and delivers up to 15A of load current
with excellent load and line regulation. The MAX15049 can
start into prebiased outputs. The MAX15048/MAX15049
are optimized for high-performance, small-size power-
management solutions.
The options of coincident or ratiometric tracking (MAX15048)
or output sequencing (MAX15049) allow the tailoring of
the power-up/power-down sequence depending on the
system requirements. Each of the MAX15048/MAX15049
PWM sections utilizes a voltage-mode control scheme with
external compensation, allowing for good noise immunity
and maximum flexibility with a wide selection of inductor
values and capacitor types. Each PWM section operates at
the same fixed switching frequency that is programmable
from 200kHz to 1.2MHz. Each converter, operating at up to
1.2MHz with 120 N out-of-phase, increases the input capaci-
tor ripple frequency up to 3.6MHz, reducing the RMS input
ripple current and thus the size of the input bypass capaci-
tor significantly. The MAX15048/MAX15049 integrate boost
diodes for additional system cost savings.
The MAX15048/MAX15049 include internal undervolt-
age lockout (UVLO) with hysteresis and digital soft-start
(MAX15048/MAX15049)/soft-stop (MAX15048) for glitch-
free power-up and power-down of the converter. The
power-good circuitry (PGOOD) monitors all three outputs
and provides a power-good signal to the system control/
processor when all outputs are within regulation. Protection
Features
S 4.7V to 23V or 5V ±10% Input Voltage Range
S Triple-Output Synchronous Buck Controllers with
120° Out-of-Phase Operation
S Prebias Power-Up (MAX15049)
S Output Voltage Adjustable Down to 0.6V
S Coincident/Ratiometric Tracking (MAX15048)
S Accurate Sequencing Through Enable Threshold
(MAX15049)
S External Compensation for Maximum Flexibility
S Digital Soft-Start (MAX15048/MAX15049) and Soft-
Stop (MAX15048)
S Lossless Valley-Mode Current Sensing Using
R DS(ON) of the Low-Side MOSFET
S PGOOD Output
S Integrated Bootstrap Diodes
S Programmable Switching Frequency from 200kHz
to 1.2MHz
S Thermal Shutdown and Hiccup Mode Short-Circuit
Protection
S Space-Saving (5mm x 5mm), 32-Pin TQFN
Package
PART TEMP RANGE PIN-PACKAGE
MAX15048 ETJ+ -40 N C to +85 N C 32 TQFN-EP*
MAX15049 ETJ+ -40 N C to +85 N C 32 TQFN-EP*
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Simplified Typical Operating
Circuit (Coincident Tracking)
V OUT2
features include lossless valley-mode current limit, hiccup
mode output short-circuit protection, and thermal shutdown.
IN
IN
The MAX15048/MAX15049 are available in space-saving,
5mm x 5mm, lead-free, 32-pin TQFN-EP packages and
are specified for operation over the -40 N C to +85 N C
extended temperature range.
Applications
Point-of-Load DC-DC Converters
V OUT3
V OUT1
DH3
LX3
BST3
DL3
PGND3
FB3
COMP3
MAX15048
EN1
DH1
LX1
BST1
DL1
PGND1
IN
V OUT1
ASIC/CPU/DSP Core and I/O Voltages
DDR Power Supply
Base-Station Power Supplies
Telecom and Networking Power Supplies
RAID Control Power Supplies
Set-Top Boxes
EN3
V REG
V OUT1
V OUT2
V OUT3
SOFT-START SOFT-STOP
COINCIDENT TRACKING OUTPUTS
FB1
COMP1
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-5110; Rev 0; 1/10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX15049ETJ+ | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking 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 |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC BUCK CNTRL TRIPLE 32WQFN 制造商:Maxim Integrated Products 功能描述:IC, BUCK, CNTRL, TRIPLE, 32WQFN |
| MAX15049ETJ+ | 制造商:Maxim Integrated Products 功能描述:IC PWM STEP-DOWN DC/DC CONVER |
| MAX15049ETJ+T | 功能描述:DC/DC 开关控制器 1.2MHz Triple Buck w/Tracking 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 |
| MAX15049EVKIT+ | 功能描述:电源管理IC开发工具 MAX15049 Eval Kit 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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