MAX38800

Integrated, Step-Down Switching Regulator with Selectable Applications Configurations

9A Fully Integrated, Highly Efficient Switching Regulator


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说明

The MAX38800 is a fully integrated, highly efficient switching regulator for applications operating from 6.5V to 14V input supplies that require up to 9A maximum load. This single-chip regulator provides compact high-efficiency power delivery for precision outputs that demand fast transient response.

The device has different programmability options to enable a wide range of configurations. The programmable features include: internal/external reference voltage, output voltage set-point, switching frequency, overcurrent protection level (OCP), and soft-start timing. Discontinuous current mode (DCM) operation can be enabled using pinstrapping to improve light-load efficiency.

The MAX38800 includes multiple protection and measurement features. Positive and negative cycle-by-cycle OCP, short-circuit protection and overtemperature protection (OTP) ensure robust design. Input undervoltage and overvoltage lockout shut down the regulator to prevent damages when the input voltage is out of specification. Regulation is halted in case of an output overvoltage (OVP) event. A status pin indicates that the output voltage is within range and the output voltage is in regulation. The device has an analog output that can be configured to report output current or junction temperature.

The device is available in a 19-bump (2.2mm x 2.8mm) WLCSP package that provides low thermal resistance and minimizes the printed circuit board area.
MAX38800: Functional (or Block) Diagram MAX38800: Functional (or Block) Diagram 放大+

关键特性

  • High-Efficiency Solution
    • Up to 96% Peak
    • Up to 95.5% Full Load
    • Up to 94% Light-Load Efficiency at 1A with DCM Enabled
  • Flexible Design Allows Early PCB Definition
    • Footprint Compatible with MAX38801 (15A) and MAX38802/MAX38803 (25A)
    • Programmable Switching Frequency up to 1MHz
    • Programmable Soft-Start and STAT Delay Timings
    • Programmable Reference Voltage with External Input Option
    • Programmable Positive and Negative OCP Limit
    • Supports Current Sourcing and Sinking
  • Advanced Architecture, Protection and Reporting Guarantees Reliable Designs
    • Analog Current or Temperature Reporting
    • Differential Remote Sense with Open-Circuit Detection
    • Fast Transient Response with Quick-PWM™ Architecture
    • Percentage-Based Output Power Good and OVP
    • Open-Drain Status Indicator (STAT) Pin
    • Input Undervoltage and Overvoltage Lockout
    • Adaptive Dead-Time Control
  • Saves Board Space
    • Integrated Boost Switch
    • 19-Bump WLCSP (2.2mm x 2.8mm) Footprint
    • Operation Using Ceramic Input and Output Capacitors

应用

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  • GPU核电源
  • I/O和芯片组供电电源
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Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingPower Good SignalDC-DC OutputsOper. Freq.
(kHz)
Design ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX38800 6.5140.65.5
0.6
0.65
0.9
0.95
1
Dyn. REF In
Preset
Resistor
9InternalYesYes1
400
500
600
700
800
900
EE-Sim
WLCSP/19
$2.77 @1k
查看所有Step-Down Switching Regulators (389)
Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。


MAX38800EVKIT: Evaluation Kit for the MAX38800

质量和环境数据

申请可靠性报告: MAX38800 
无铅封装的锡(Sn)晶须报告

工具和模型

  • EE-Sim: MAX38800 设计和仿真
  • MAX38800 SIMPLIS Schematic
  • 型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C  

    备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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