LP2985

現行

具啟用功能的 150-mA、16-V、低壓差電壓穩壓器

立即訂購

產品規格表

document-pdfAcrobat LP2985 150mA, Low-Noise, Low-Dropout Regulator With Shutdown datasheet (Rev. S) (英文) PDF | HTML

LP2985

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Vin (max) (V)

16

Vin (min) (V)

2.2

Iout (max) (A)

0.15

Output options

Fixed Output

Vout (max) (V)

10

Vout (min) (V)

1.8

Fixed output options (V)

1.25, 1.5, 1.8, 2.5, 2.8, 2.85, 2.9, 3, 3.1, 3.3, 5, 10

Noise (µVrms)

30

PSRR at 100 KHz (dB)

40

Iq (typ) (mA)

0.065

Features

Enable

Thermal resistance θJA (°C/W)

205.4, 206

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Accuracy (%)

5

Dropout voltage (Vdo) (typ) (mV)

280

Operating temperature range (°C)

-40 to 125

Rating

Catalog

Vin (max) (V)

16

Vin (min) (V)

2.2

Iout (max) (A)

0.15

Output options

Fixed Output

Vout (max) (V)

10

Vout (min) (V)

1.8

Fixed output options (V)

1.25, 1.5, 1.8, 2.5, 2.8, 2.85, 2.9, 3, 3.1, 3.3, 5, 10

Noise (µVrms)

30

PSRR at 100 KHz (dB)

40

Iq (typ) (mA)

0.065

Features

Enable

Thermal resistance θJA (°C/W)

205.4, 206

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Accuracy (%)

5

Dropout voltage (Vdo) (typ) (mV)

280

Operating temperature range (°C)

-40 to 125

SOT-23 (DBV)

5

8.12 mm² 2.9 x 2.8

VIN range (new chip): 2.5V to 16V
VOUT range (new chip):
- 1.2V to 5.0V (fixed, 100mV steps)
VOUT accuracy:
- ±1% for A-grade (legacy chip)
- ±1.5% for standard-grade (legacy chip)
- ±0.5% (new chip)
±1% output accuracy over load and temperature (new chip)
Output current: Up to 150mA
Low IQ (new chip): 71µA at ILOAD = 0mA
Low IQ (new chip): 750µA at ILOAD = 150mA
Shutdown current:
- 0.01µA (typ, legacy chip)
- 1.12µA (typ, new chip)
Low noise: 30µVRMS with 10nF bypass capacitor
Output current limiting and thermal protection
Stable with 2.2µF ceramic capacitors (new chip)
High PSRR: 70dB at 1kHz, 40dB at 1MHz (new chip)
Operating junction temperature: –40°C to +125°C
Package: 5-pin SOT-23 (DBV)

VIN range (new chip): 2.5V to 16V
VOUT range (new chip):
- 1.2V to 5.0V (fixed, 100mV steps)
VOUT accuracy:
- ±1% for A-grade (legacy chip)
- ±1.5% for standard-grade (legacy chip)
- ±0.5% (new chip)
±1% output accuracy over load and temperature (new chip)
Output current: Up to 150mA
Low IQ (new chip): 71µA at ILOAD = 0mA
Low IQ (new chip): 750µA at ILOAD = 150mA
Shutdown current:
- 0.01µA (typ, legacy chip)
- 1.12µA (typ, new chip)
Low noise: 30µVRMS with 10nF bypass capacitor
Output current limiting and thermal protection
Stable with 2.2µF ceramic capacitors (new chip)
High PSRR: 70dB at 1kHz, 40dB at 1MHz (new chip)
Operating junction temperature: –40°C to +125°C
Package: 5-pin SOT-23 (DBV)

The LP2985 is a fixed-output, wide-input, low-noise, low-dropout voltage regulator supporting an input voltage range from 2.5V to 16V (for new chip) and up to 150mA of load current. The LP2985 supports an output range of 1.2V to 5.0V (for new chip).

Additionally, the LP2985 (new chip) has a ±1% output accuracy across load, and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

Low output noise of 30µVRMS (with 10nF bypass capacitors) and wide bandwidth PSRR performance of greater than 70dB at 1kHz and 40dB at 1MHz help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The new chip provides internal soft-start mechanism to reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are also included.

The LP2985 is available in a 5-pin 2.9mm × 2.8mm SOT-23 (DBV) package.

The LP2985 is a fixed-output, wide-input, low-noise, low-dropout voltage regulator supporting an input voltage range from 2.5V to 16V (for new chip) and up to 150mA of load current. The LP2985 supports an output range of 1.2V to 5.0V (for new chip).

Additionally, the LP2985 (new chip) has a ±1% output accuracy across load, and temperature that can meet the needs of low-voltage microcontrollers (MCUs) and processors.

Low output noise of 30µVRMS (with 10nF bypass capacitors) and wide bandwidth PSRR performance of greater than 70dB at 1kHz and 40dB at 1MHz help attenuate the switching frequency of an upstream DC/DC converter and minimize post regulator filtering.

The new chip provides internal soft-start mechanism to reduce inrush current during start up, thus minimizing input capacitance. Standard protection features, such as overcurrent and overtemperature protection, are also included.

The LP2985 is available in a 5-pin 2.9mm × 2.8mm SOT-23 (DBV) package.

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檢視所有 31

	類型	標題		日期
*	Data sheet	LP2985 150mA, Low-Noise, Low-Dropout Regulator With Shutdown datasheet (Rev. S)	PDF \| HTML	2025年 5月 23日
	Application note	An empirical analysis of the impact of board layout on LDO thermal performance (Rev. A)	PDF \| HTML	2025年 9月 23日
	Application note	LDO Noise Demystified (Rev. B)	PDF \| HTML	2020年 8月 18日
	Application brief	16-Bit 8-Channel PLC Analog Input Module with High Voltage (±150 V) Common Mode		2020年 4月 27日
	Application note	ESR, Stability, and the LDO Regulator (Rev. A)		2020年 1月 7日
	Application note	A Topical Index of TI LDO Application Notes (Rev. F)		2019年 6月 27日
	E-book	LDO Basics (Rev. A)		2019年 4月 8日
	Application note	Fundamental Theory of PMOS LDO Voltage Regulators (Rev. A)		2018年 8月 17日
	Application note	LDO PSRR Measurement Simplified (Rev. A)	PDF \| HTML	2017年 8月 9日
	Technical article	LDO basics: dropout	PDF \| HTML	2017年 3月 16日
	Application note	A Topical Index of TI Supply Voltage Supervisor (SVS) Application Notes		2015年 6月 15日
	Application note	Linear power for automated industrial systems		2015年 1月 9日
	Analog Design Journal	Techniques for accurate PSRR measurements		2013年 10月 28日
	Application note	AN-1028 Maximum Power Enhancement Techniques for Power Packages (Rev. B)		2013年 5月 6日
	Application note	AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A)		2013年 4月 25日
	Application note	AN-1815 LDOs Ease the Stress of Start-Up (Rev. A)		2013年 4月 24日
	Application note	AN-1950 Silently Powering Low Noise Applications (Rev. A)		2013年 4月 22日
	Application note	LDO Performance Near Dropout		2010年 10月 8日
	Application note	3.6V – 5.5V Input, LDO Reference Design for MSP430 (Rev. A)		2010年 6月 14日
	Application note	3.6V – 5.5V Input, LDO with Dual-Level Output Reference Design for MSP430 (Rev. A)		2010年 6月 14日
	Application note	Packaging Limits Range of Linear Regulators		2010年 5月 8日
	Application note	Simple Power Solution Using LDOs for the DM365 (Rev. A)		2009年 9月 11日
	Application note	Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A)		2008年 6月 4日
	Application note	Linear and Switching Voltage Regulator Fundamental Part 1		2007年 3月 21日
	Application note	Ceramic Capacitors Replace Tantalum Capacitors in LDOs (Rev. A)		2006年 10月 13日
	Application note	Understanding LDO Dropout		2005年 5月 9日
	More literature	LP2981/85 Product Clip		2004年 9月 9日
	Application note	Extending the Input Voltage Range of an LDO Regulator		2002年 8月 16日
	Application note	Understanding the Terms and Definitions of LDO Voltage Regulators		1999年 10月 21日
	Application note	Technical Review of Low Dropout Voltage Regulator Operation And Performance		1999年 8月 30日
	Application brief	Low Power 150-mA LDO Linear Regulators. Extended Output Voltage Adjustment Range		1999年 6月 11日

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