LP3985ITL-2.6/NOPB

更新时间： 2024-11-14 13:09:27

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德州仪器 - TI		稳压器调节器输出元件
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LP3985

www.ti.com

SNVS087AC –OCTOBER 2000–REVISED MAY 2013

LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator

Check for Samples: LP3985

FEATURES

DESCRIPTION

The LP3985 is designed for portable and wireless

applications with demanding performance and space

requirements.

•

Miniature 5-I/O DSBGA and USON Package

Logic Controlled Enable

•

Stable with Ceramic and High Quality

Tantalum Capacitors

The LP3985 is stable with a small 1µF ±30% ceramic

or high-quality tantalum output capacitor. The DSBGA

requires the smallest possible PC board area - the

total application circuit area can be less than 2.0mm x

2.5mm, a fraction of a 1206 case size.

•

Fast Turn-on

Thermal Shutdown and Short-Circuit Current

Limit

The LP3985's performance is optimized for battery

powered systems to deliver ultra low noise, extremely

low dropout voltage and low quiescent current.

Regulator ground current increases only slightly in

dropout, further prolonging the battery life.

APPLICATIONS

•

CDMA Cellular Handsets

Wideband CDMA Cellular Handsets

GSM Cellular Handsets

An optional external bypass capacitor reduces the

output noise without slowing down the load transient

response. Fast startup time is achieved by utilizing an

internal power-on circuit that actively pre-charges the

bypass capacitor.

Portable Information Appliances

KEY SPECIFICATIONS

•

2.5 to 6.0V Input Range

Power supply rejection is better than 50dB at low

frequencies and starts to roll off at 1kHz. High power

supply rejection is maintained down to low input

voltage levels common to battery operated circuits.

150mA Verified Output

50dB PSRR at 1kHz @ VIN = VOUT + 0.2V

≤1.5μA Quiescent Current when Shut Down

Fast Turn-On time: 200μs (typ.)

The device is ideal for mobile phone and similar

battery powered wireless applications. It provides up

to 150mA, from a 2.5V to 6V input. The LP3985

consumes less than 1.5µA in disable mode and has

fast turn-on time less than 200µs.

100mV Maximum Dropout with 150mA Load

30μVrms Output Noise (typ.) Over 10Hz to

100kHz

•

−40 to +125°C Junction Temperature Range for

Operation

2.5V, 2.6V, 2.7V, 2.8V, 2.85V, 2.9V, 3.0V, 3.1V,

3.2V, 3.3V, 4.7V, 4.75V, 4.8V and 5.0V outputs

standard

Typical Application Circuit

1(C3)

3(A1)

5(C1)

V_IN

V_OUT

LP3985

1mF

4(A3)

V_EN

BYPASS

2(B2)

Pin Numbers in parenthesis indicate DSBGA package.

* Optional Noise Reduction Capacitor.

Figure 1.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...29

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与LP3985ITL-2.6/NOPB相关器件

型号	品牌	获取价格	描述	数据表
LP3985ITL-2.7	NSC	获取价格	Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.7	TI	获取价格	LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.7/NOPB	TI	获取价格	具有旁路和使能功能的 150mA、低压降稳压器 \| YZR \| 5 \| -40 to 12
LP3985ITL-2.8	NSC	获取价格	Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.8	TI	获取价格	LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.8/NOPB	NSC	获取价格	IC VREG 2.8 V FIXED POSITIVE LDO REGULATOR, 0.1 V DROPOUT, PBGA5, 0.600 MM HEIGHT, MICRO,
LP3985ITL-2.8/NOPB	TI	获取价格	Micropower, 150-mA Low-Noise Ultra-Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.9	NSC	获取价格	Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.9	TI	获取价格	LP3985 Micropower, 150mA Low-Noise Ultra Low-Dropout CMOS Voltage Regulator
LP3985ITL-2.9/NOPB	NSC	获取价格	IC VREG 2.9 V FIXED POSITIVE LDO REGULATOR, 0.1 V DROPOUT, PBGA5, 0.600 MM HEIGHT, MICRO,

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