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Integrated, Step-Down Switching Regulators with Selectable Applications Configurations

25A全機能内蔵、高効率スイッチングレギュレータ

製品の詳細

主な特長

アプリケーション/用途

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 6.5
VIN (V) (max) 14
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 25
Switch Type Internal
Preset VOUT (V) 1
Output Adjust. Method Dyn. REF In
Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 900
400
500
600
700
800
Package/Pins WLCSP/27
Budgetary
Price (See Notes)
3.17
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技術資料

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パラメーター

Parametric specs for Step-Down Switching Regulators
VIN (V) (min) 6.5
VIN (V) (max) 14
VOUT1 (V) (min) 0.6
VOUT1 (V) (max) 5.5
IOUT1 (A) (max) 25
Switch Type Internal
Preset VOUT (V) 1
Output Adjust. Method Dyn. REF In
Preset
Resistor
Synchronous Switching? Yes
Power Good Signal Yes
# DC-DC Outputs 1
Switching Frequency (kHz) 900
400
500
600
700
800
Package/Pins WLCSP/27
Budgetary
Price (See Notes)
3.17

主な特長

  • High-Efficiency Solution
    • Up to 97% Peak
    • Up to 87% Full-Load
    • Up to 96% Light-Load Efficiency at 1A with DCM Enabled
  • Flexible Design Allows Early PCB Definition
    • Footprint Compatible with MAX38800 (9A) and MAX38801 (15A)
    • 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
  • 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
    • 27-Bump WLCSP (2.2mm x 3.8mm) Footprint
    • Operation Using Ceramic Input and Output Capacitors

アプリケーション/用途

  • DDRメモリ – VDDQ、VPP、およびVTT
  • GPUコア電源
  • I/Oおよびチップセット電源
  • ポイントオブロード(POL)アプリケーション
  • サーバ/マイクロサーバ

説明

The MAX38802/MAX38803 are fully-integrated, highly efficient switching regulators for applications operating from 6.5V to 14V input supplies that require up to 25A maximum load. These single-chip regulators provide a compact high-efficiency, power-delivery solution for precision outputs that demand fast transient response.


The two devices have different programmability options (see Tables 3a and 3b for details) to enable a wide range of configurations. The programmable features include: internal/external reference voltage, output voltage setpoint, switching frequency, overcurrent protection level (OCP), and soft-start timing. Discontinuous current mode (DCM) operation can be enabled through pin-strapping to improve light-load efficiency.


The MAX38802/MAX38803 include 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 damage 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 with ±5% and ±8°C accuracy, respectively.


The devices are available in a 27-bump (2.2mm x 3.8mm) WLCSP package that provides low thermal resistance and minimizes the PCB area.

簡易ブロック図

MAX38802、MAX38803:基本アプリケーション回路 MAX38802、MAX38803:基本アプリケーション回路 Zoom icon

技術資料

サポートとトレーニング

技術質問への回答についてはナレッジベースで検索ください。

絞り込まれた検索

マキシムでは、お客様の技術的質問にお答えするため、アプリケーションエンジニアの専任チームも配置しています。 サポートセンター をご利用ください。