NCP729数据手册集成电路（IC）的线性+开关稳压器规格书PDF

描述 Description

The NCP729 is a 200 mA LDO suitable to provide clean analog power supply rails for noise sensitive applications. This device features Ultra-Low Noise performance, High Power Supply Rejection Ratio and Very good transient response characteristics. Very Low Dropout and Very Low Quiescent Current makes this LDO an attractive choice for wide range of battery powered, portable products. Current Limit and Thermal Shutdown provide protection during failure conditions. NCP729 is available in 1.06 mm x 1.06 mm Chip Scale Package and it is stable with small 1 uF Ceramic capacitors.

特性 Features

Operating Input Voltage Range: 2.0V to 5.5V
Well suited for battery powered applications
Ultra-Low Output Noise: Typ. 11µVrms from 100Hz to 100kHz
Very well suited for noise sensitive applications
Ultra-Low No-Load Ground Current of Typ. 35µA
Improved efficiency during ligh-load conditions
High Ripple Rejection Ratio: Typ. 72dB @ 1kHz
Effectively filters the supply line noise
Stable with small 1µF ceramic output capacitor
Small solution size
Available Fixed Output Voltage Options: 0.8V to 3.5V
Sub-bandgap output voltages avaliable
Output voltage trimming step: 2.5mV
Output voltage can be trimmed precisely according to specific customer needs
Enable/Shutdown Pin Function
Allows to turn ON/OFF the Regulator using logic I/O signal
Ultra-Low Shutdown Mode Current: Max. 1µA
Minimizes battery drain when placed in the Shutdown Mode
Active Output Discharge
Fast Output Voltage Turn-off
Ouput Short Circuit and Current Limit Protection
Assures robust design
Thermal Shutdown Protection
Protects from overheating
Very-Low Dropout Voltage: Typ. 86mV @ 200mA
Supports applications with very low Input to Output Voltage requirements
Available in small 1.06mm x 1.06mm 4-bump CSP package
Very well suited for space-constrained applications
Output Voltage Accuracy: ±2.0% over load/line and temperature variations
Supports applications with tight regulation requirements

应用 Application

High-Frequency Precision Clock SuppliesPLL, VCO, TCXO Power SuppliesGPS Receiver Section SupplyAudio Section SupplyWLAN Tranceiver PowerTouchscreen Controller SupplyCamera Module Power SupplyPower for Precision Analog-to-Digital Converters Noise Sensitive RF Sections
SmartphoneTabletGPS Portable Navigation DevicePersonal Digital Assistant (PDA)Remote ControlZigbee, Bluetooth, WLAN Based DevicesIntrumentation EquipementCommunication Devices

简介

NCP729属于集成电路（IC）的线性+开关稳压器。由制造生产的NCP729稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。