TPS7A4501U/EM集成电路（IC）的线性+开关稳压器规格书PDF中文资料

TPS7A4501U/EM属于集成电路（IC）的线性+开关稳压器。由德州仪器制造生产的TPS7A4501U/EM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。

1 Features

1• QMLV Qualified SMD 5962-12224

• Adjustable Output from 1.21 to 20 V

• Optimized for Fast-Transient Response

• High Output Voltage Accuracy: 1.15 at 25°C

(Typical)

• Dropout Voltage: 200 mV With ILOAD = 750 mA

(Typical)

• Low Noise: 50 μV RMS (10 Hz to 100 kHz) for VOUT = 5 V

• High Ripple Rejection: 68 dB at 1 kHz

• 1-mA Quiescent Current

• No Protection Diodes Needed

• Stable With Ceramic Output Capacitor

• Reverse-Battery Protection

• Reverse Current Protection

• 5962-1222402VHA:

– Wide Vin 2.3 to 20 V

– Output Current: 750 mA

• 5962R1222403VXC:

– Wide Vin 2.9 to 20 V

– Output Current: 1.5 A

– Thermally-Enhanced HKU Package

– Radiation Hardness Assurance (RHA) up to

Total Ionizing Dose (TID) 100 krad (Si)

– Exhibits Low Dose Rate Sensitivity But

Remains Within the Pre-Radiation Electrical

Limits at 100 krad Total Dose Level, as

Allowed by MIL-STD-883, TM1019

2 Applications

• RF Components VCOs, Receivers, ADCs,

Amplifiers and Clock Distributions

• Clean Analog Supply Requirements

• Available in Military (–55°C to 125°C)

Temperature Range

• Engineering Evaluation (/EM) Samples are

Available

(1) These units are intended for engineering evaluation only.

They are processed to a non-compliant flow (for example, no burn-in, and so forth) and are tested to a temperature rating of

25°C only. These units are not suitable for qualification,

production, radiation testing or flight use. Parts are not specified for performance over the full MIL specified

temperature range of –55°C to 125°C or operating life.

3 Description

The TPS7A4501-SP is a low-dropout (LDO) regulator

optimized for fast-transient response. The 5962-

1222402VHA can supply 750 mA of output current

with a dropout voltage of 300 mV. The

5962R1222403VXC can supply 1.5 A of output current with a dropout voltage of 320 mV. Quiescent

current is well controlled; it does not rise in dropout,

as with many other regulators. In addition to fast

transient response, the TPS7A4501-SP regulator has very-low output noise, which makes it ideal for

sensitive RF supply applications.