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MAX16922

MAX16922

2.2MHz、双通道、降压型DC-DC转换器，带有两路LDO和/RESET功能

四通道汽车应用转换器，采用5mm x 5mm封装

数据资料
订阅

点击查看特定型号的库存状况。

概述

说明

MAX16922电源管理集成电路(PMIC)专为中等电压汽车应用而设计，在小尺寸封装中集成了多路电源。器件包含一个高压降压转换器(OUT1)和三个级联连接的低压DC-DC转换器(OUT2、OUT3、OUT4)。OUT1和OUT2是降压DC-DC转换器，OUT3/OUT4是线性稳压器。器件还包含一路复位输出(/RESET)以及一路高压使能输入(EN)。

输出电流为1.2A的高效率、降压DC-DC转换器(OUT1)工作在最高28V电压，具有瞬态电压高达45V的抛负载保护。输出电流为600mA的高效率、降压DC-DC转换器(OUT2)工作在最高5.5V电压。两路300mA LDO线性稳压器的压差仅为130mV (典型值)。电源就绪/RESET输出能够监测OUT1和OUT2的电压。

OUT1和OUT2采用2.2MHz较快的PWM开关频率以及小尺寸外部元件。高压转换器(OUT1)在轻载时自动进入跳脉冲模式，以避免输出端发生过压故障。低压同步DC-DC转换器(OUT2)可以工作在强制PWM模式(以避免AM频带干扰)或高效率自动PWM模式。

MAX16922具有过热关断和过流限制功能。器件工作在-40°C至+125°C温度范围。
MAX16922：典型工作电路 MAX16922：典型工作电路 放大+

关键特性

  • 1.2A、高效率、2.2MHz DC-DC转换器
    • 3.7V至28V工作电压范围
    • 具有45V抛负载保护
    • 输出电压范围：3.0V至5.5V
  • 600mA、高效率、2.2MHz DC-DC转换器
    • 2.7V至5.5V工作电压范围
    • 输出电压范围：1.0V至3.9V
    • 180°错相工作方式
    • 强制PWM和自动PWM工作模式
  • LDO线性稳压器
    • OUT3：1.0V至4.15V、300mA输出
    • OUT4：1.0V至4.15V、300mA输出
    • 独立输入可提高效率
  • 使能输入
  • /RESET输出可监测OUT1和OUT2
  • 过热及短路保护
  • 器件采用
    • 5mm × 5mm × 0.8mm、20引脚TQFN-EP封装
    • 4.5mm × 6.5mm、20引脚TSSOP-EP封装

应用

  • 汽车

参数规格

Part NumberVIN
(V)		VIN
(V)		VOUT1
(V)		VOUT1
(V)		Preset VOUT
(V)		Output Adjust. MethodIOUT1
(A)		Switch TypeSynchronous SwitchingDC-DC OutputsOper. Freq.
(kHz)		Package/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX16922 3.7283550mV stepsPreset1.2InternalYes22200
TQFN/20
TSSOP/20
$5.55 @1k
查看所有Step-Down Switching Regulators (367)
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。

设计资源


MAX16922EVKIT: MAX16922评估板

技术资料

应用笔记 4608 MAX16922 PMIC布线指南及示例

质量和环境数据

申请可靠性报告: MAX16922 
无铅封装的锡（Sn）晶须报告

CAD Symbols and Footprints

  • MAX16922ATPA/V+
  • MAX16922ATPA/V+T
  • MAX16922ATPB/V+
  • MAX16922ATPB/V+T
  • MAX16922ATPC/V+
  • MAX16922ATPC/V+T
  • MAX16922ATPD/V+
  • MAX16922ATPD/V+T
  • MAX16922ATPE/V+
  • MAX16922ATPE/V+T
  • MAX16922ATPF/V+
  • MAX16922ATPF/V+T
  • MAX16922ATPG/V+
  • MAX16922ATPG/V+T
  • MAX16922ATPH/V+
  • MAX16922ATPH/V+T
  • MAX16922ATPI/V+
  • MAX16922ATPI/V+T
  • MAX16922ATPJ/V+
  • MAX16922ATPJ/V+T
  • MAX16922ATPK/V+
  • MAX16922ATPK/V+T
  • MAX16922ATPL/V+
  • MAX16922ATPL/V+T
  • MAX16922ATPN/V+
  • MAX16922ATPN/V+T
  • MAX16922ATPO/V+
  • MAX16922ATPO/V+T
  • MAX16922AUPA/V+
  • MAX16922AUPA/V+T
  • MAX16922AUPB/V+
  • MAX16922AUPB/V+T
  • MAX16922AUPC/V+
  • MAX16922AUPC/V+T
  • MAX16922AUPD/V+
  • MAX16922AUPD/V+T
  • MAX16922AUPE/V+
  • MAX16922AUPE/V+T
  • MAX16922AUPF/V+
  • MAX16922AUPF/V+T
  • MAX16922AUPG/V+
  • MAX16922AUPG/V+T
  • MAX16922AUPH/V+T
    •

    质量与环境

    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。

    质量管理体系 >
    环境管理体系 >

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    技术文档

    类型 编号 PDF 标题
    应用笔记 4608 MAX16922 PMIC布线指南及示例

    参考设计

    类型 编号 标题
    评估板6645MAX16922EVKIT MAX16922评估板