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RT5762是输入电压范围为 2.5V~6V、负载能力为 2A、简单易用的同步 Buck 转换器,内含 0.6V 高精度参考电压源和低 RDS(ON) MOSFET 功率开关,转换效率高,以 SOT-563 (FC) 和 UDFN-6L 1.4x1 (FC) 封装形式供货。
RT5762采用改进型固定导通时间(ACOT®)控制架构,具有超快瞬态响应速度,外围元件少,在整个输入、输出和负载范围内具有几乎恒定的工作频率。在轻载时,RT5762A/C/E 自动运行于 PSM 模式以维持高转换效率,RT5762B/D/F 则工作于强制 PWM 模式以满足应用对高输出电压精度的要求。
RT5762通过对上下桥 MOSFET 流过电流的检测实现强劲的过流保护,每个周期都进行的电流限制可防止器件在出现输出端短路、过流或电感饱和等现象时免于受到严重的损坏。其内建的软启动功能可避免在启动期间出现电流冲击,还有输入欠压锁定保护、输出欠压保护、过压保护(RT5762AL/BL/CL/DL/EL/FL)和过热保护等功能可确保其在各种工作状态下的安全和平稳的运行。

应用

  • 移动电话和手持设备
  • 机顶盒、调制解调器等通讯设备
  • 网络设备和存储装置
  • 通用负载点低压调节器
主要规格
RT5762A RT5762B RT5762C RT5762D RT5762E RT5762F
Status Active Active Active Active Active Preview
Vin (min) (V) 2.5 2.5 2.5 2.5 2.5 2.5
Vin (max) (V) 5.5 5.5 5.5 5.5 5.5 5.5
Number of Outputs 1 1 1 1 1 1
Vout (min) (V) 0.6 0.6 0.6 0.6 0.6 0.6
Vout (max) (V) 5.5 5.5 5.5 5.5 5.5 5.5
Output Adj. Method Resistor Resistor Resistor Resistor Resistor Resistor
Iout (max) (A) 2 2 2 2 2 2
Current Limit (typ) (A) 2.3 2.3 2.3 2.3 2.3 2.3
Freq (typ) (kHz) 1200 1200 1200 1200 1200 1200
Ext Sync No No No No No No
Ron_HS (typ) (mOhm) 100 100 100 100 100 100
Ron_LS (typ) (mOhm) 70 70 70 70 70 70
Iq (typ) (mA) 0.023 0.023 0.023 0.023 0.023 0.023
Features 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;PSM;Power Good;SCP;Stable with Ceramic Capacitor;UVP 100% Duty Cycle;ACOT Control;COT Control;Cycle-by-Cycle Current Limit;Enable Input;Fast Transient Response;OCP;OTP;OVP;Power Good;SCP;Stable with Ceramic Capacitor;UVP
Package Type SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC) SOT-563(FC);UDFN1.4x1-6(FC)
关键特性
  • 输入电压范围:2.5V~6V
  • 集成 100mΩ/70mΩ MOSFET 功率开关
  • 100% 占空比支持低压差运行
  • 内部参考电压精度:1%
  • 典型工作频率:1.2MHz
  • 轻载时,RT5762A/C/E 以节能模式运行
  • ACOT® 控制架构
  • 内置 1.5ms 软启动时间
  • 使能控制
  • Power Good 指示
  • 负电流过流保护(RT5762B/D/F)
  • 输入欠压锁定保护、过压保护、欠压保护、逐周期电流限制保护和过热保护
  • 符合 RoHS 规范,不含卤素
Part NumberPackage TypePackage Qty.Free SampleDistributorStockBuy From Authorized Distributor
RT5762BHGH6FSOT-563(FC)5,000 Request Digikey 0 Lead-Time: 14 weeks
Mouser 3,640 Buy
RT5762CHGH6FSOT-563(FC)5,000 Request Digikey 3,524 Buy
Mouser 4,690 Buy
RT5762DHGH6FSOT-563(FC)5,000 Request Digikey 0 Lead-Time: 14 weeks
Mouser 4,775 Buy
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