TPS732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 TPS732 family of low-dropout (LDO) voltage regulators uses an NMOS pass element in a voltage-follower configuration. This topology is stable using output capacitors with low equivalent series resistance (ESR), and even allows operation without a capacitor. The device also provides high reverse blockage (low reverse current) and ground pin current that is nearly constant over all values of output current.

The TPS732 uses an advanced BiCMOS process to yield high precision while delivering very low dropout voltages and low ground pin current. Current consumption, when not enabled, is less than 1 µA and ideal for portable applications. The extremely low output noise (30 µVRMS with 0.1-µF CNR) is ideal for powering VCOs. These devices are protected by thermal shutdown and foldback current limit.

特性 Features

• Stable with No Output Capacitor or Any Value or Type of Capacitor
• Input Voltage Range: 1.7 V to 5.5 V
• Ultralow Dropout Voltage: 40 mV Typical at 250 mA
• Excellent Load Transient Response–With or Without Optional Output Capacitor
• NMOS Topology Provides Low Reverse Leakage Current
• Low Noise: 30 µVRMS Typical (10 kHz to 100 kHz)
• 0.5% Initial Accuracy
• 1% Overall Accuracy (Line, Load, and Temperature)
• Less Than 1-µA Maximum IQ in Shutdown Mode
• Thermal Shutdown and Specified Min and Max Current Limit Protection
• Available in Multiple Output Voltage Versions
• Fixed Outputs of 1.2 V to 5 V
• Adjustable Outputs from 1.2 V to 5.5 V
• Custom Outputs Available

• APPLICATIONS
• Portable and Battery-Powered Equipment
• Post-Regulation for Switching Supplies
• Noise-Sensitive Circuitry such as VCOs
• Point-of-Load Regulation for DSPs, FPGAs, ASICs, and Microprocessors

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