LP3988 - 具有电源正常指示功能的微功耗、150mA 超低压降 CMOS 稳压器

LP3988是TI德州仪器公司的一款单通道LDO产品，LP3988是具有电源正常指示功能的微功耗、150mA 超低压降 CMOS 稳压器，本站介绍了LP3988的封装应用图解、特点和优点、功能等，并给出了与LP3988相关的TI元器件型号供参考。

LP3988 - 具有电源正常指示功能的微功耗、150mA 超低压降 CMOS 稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

Input Voltage Range: 2.5 V to 6 V
Output Current: 150 mA
PSRR at 10 kHz: 40 dB
Quiescent Current When Shut Down: ≤ 1µA
Fast Turnon Time: 100 µs (Typical)
Dropout With 150-mA load: 80 mV (Typical)
Junction Temperature Range for Operation: −40°C to +125°C
Power-Good Flag Output
Logic Controlled Enable
Thermal Shutdown and Short-Circuit Current Limit
Stable with Ceramic and High-Quality Tantalum Capacitors

产品应用

CDMA Cellular Handsets
Wideband CDMA Cellular Handsets
GSM Cellular Handsets
Portable Information Appliances
Tiny 3.3 V ± 5% to 2.85 V, 150-mA Converter

产品说明

The LP3988 is a 150-mA low dropout regulator designed specially to meet requirements of portable battery applications. The LP3988 is designed to work with space-saving, small 1-µF ceramic capacitors. The LP3988 features a Power Good (PG) output that indicates a faulty output condition. The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 150 mA output current from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode and has fast turnon time less than 200 µs.

The LP3988 device's performance is optimized for battery-powered systems to deliver low noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies and starts to roll off at 10 kHz. High power-supply rejection is maintained down to lower input-voltage levels common to battery-operated circuits.

The LP3988 is available in a 5-pin SOT-23 package and a 5-pin thin DSBGA package. Performance is specified for −40°C to +125°C temperature range. For all available output voltage and package options, see the Package Option Addendum (POA) at the end of the data sheet.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LP3988	SOT-23 (5)	2.90 mm × 1.60 mm
LP3988	DSBGA (5)	1.502 mm × 1.045 mm(2)

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