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Integrated, Step-Down Switching Regulators with Selectable Applications Configurations

25A Fully Integrated, Highly Efficient Switching Regulators

产品详情

主要特征

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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参量

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

主要特征

  • 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

应用/用途

  • DDR memory – VDDQ, VPP and VTT
  • GPU Core Supply
  • I/O and Chipset Supplies
  • Point-of-Load (POL) applications
  • Servers/uServers

描述

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.

简化框图

MAX38802, MAX38803: Basic Application Circuit MAX38802, MAX38803: Basic Application Circuit Zoom icon

Technical Docs

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心