具有轻载模式的4.5V至18V 输入4A 同步降压DC-DC转换器PS54426

具有轻载模式的4.5V至18V 输入4A 同步降压转换器TPS54426

描述：	IC BUCK SYNC ADJ 4A 14HTSSOP
系列：	Swift™, D-Cap2™, Eco-Mode™
类型：	降压（降压）
输出类型：	可调式
输出数：	1
输出电压：	0.76 V ~ 5.5 V
输入电压：	4.5 V ~ 18 V
PWM 型：	混合物
频率 - 开关：	700kHz
电流 - 输出：	4A
同步整流器：	是
工作温度：	-40°C ~ 85°C
安装类型：	表面贴装
封装/外壳：	14-TSSOP （0.173", 4.40mm 宽）裸露焊盘
包装：	带卷 (TR)
供应商设备封装：	14-HTSSOP

说明：

The TPS54426 is an adaptive on-time D-CAP2™ mode synchronous buck converter. The TPS54426 enables system designers to complete the suite of various end equipment’s power bus regulators with a cost effective, low component count, low standby current solution. The main control loop for the TPS54426 uses the D-CAP2™ mode control which provides a very fast transient response with no external compensation components. The adaptive on-time control supports seamless transition between PWM mode at higher load conditions and Eco-mode™ operation at light loads. Eco-mode™ allows the TPS54426 to maintain high efficiency during lighter load conditions. The TPS54426 also has a proprietary circuit that enables the device to adopt to both low equivalent series resistance (ESR) output capacitors, such as POSCAP, SP-CAP, and ultra-low ESR ceramic capacitors. The device operates from 4.5-V to 18-V VIN input. The output voltage can be programmed between 0.76 V and 5.5 V. The device also features an adjustable soft start time and a power good function. The TPS54426 is available in the 14-pin HTSSOP package and the 16 pin QFN package, designed to operate from –40°C to 85°C.

特性：

D-CAP2™ Mode Enables Fast Transient Response
Low Output Ripple and Allows Ceramic Output Capacitor
Wide V_IN Input Voltage Range: 4.5 V to 18 V
Output Voltage Range: 0.76 V to 5.5 V
Highly Efficient Integrated FET’s Optimized
for Lower Duty Cycle Applications
– 65 mΩ (High Side) and 55 mΩ (Low Side)
High Efficiency, less than 10 µA at shutdown
High Initial Bandgap Reference Accuracy
Adjustable Soft Start
Pre-Biased Soft Start
700-kHz Switching Frequency (f_SW)
Cycle By Cycle Over Current Limit
Power Good Output
Auto-Skip Eco-mode for High Efficiency at Light Load
APPLICATIONS
- Wide Range of Applications for Low Voltage System
  - Digital TV Power Supply
  - High Definition Blu-ray Disc Players
  - Networking Home Terminal
  - Digital Set Top Box (STB)

框图：

型号/规格

TPS54426PWPR,PS54426

品牌/商标

TI（德州仪器）

供应具有轻载模式的4.5V至18V 输入4A 同步降压DC-DC转换器PS54426