LTC3026EDDTRPBF

更新时间： 2024-09-25 05:43:51

品牌	Logo	应用领域
凌特 - Linear		稳压器
页数	文件大小	规格书
18页	1827K
描述
1.5A Low Input Voltage VLDO Linear Regulator

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LTC3026EDDTRPBF 数据手册

LTC3026

1.5A Low Input Voltage

VLDO Linear Regulator

FeaTures

DescripTion

TheLTC^®3026isaverylowdropout(VLDO™)linearregula-

tor that can operate at input voltages down to 1.14V. The

device is capable of supplying 1.5A of output current with

a typical dropout voltage of only 100mV. To allow opera-

tion at low input voltages the LTC3026 includes a boost

converter that provides the necessary headroom for the

internal LDO circuitry.

Input Voltage Range:

1.14V to 3.5V (with Boost Enabled)

1.14V to 5.5V (with External 5V Boost)

Low Dropout Voltage: 100mV at I

= 1.5A

OUT

Adjustable Output Range: 0.4V to 2.6V

Output Current: Up to 1.5A

Excellent Supply Rejection Even Near Dropout

Shutdown Disconnects Load from V and V

BST

Output current comes directly from the input supply to

maximize efﬁciency. The boost converter requires only a

small chip inductor and ceramic capacitor for operation.

Additionally, the boosted output voltage of one LTC3026

can supply the boost voltage for other LTC3026s, thus

requiring a single inductor for multiple LDOs. A user

supplied boost voltage can be used eliminating the need

for an inductor altogether.

Low Operating Current: I = 950µA at V = 1.5V

Low Shutdown Current:

I < 1µA (Typ), I = 0.1µA (Typ)

BST

Stable with 10µF or Greater Ceramic Capacitors

Short-Circuit, Reverse Current Protected

Overtemperature Protected

Available in 10-Lead MSOP and 10-Lead

(3mm × 3mm) DFN Packages

The LTC3026 regulator is stable with 10µF or greater

ceramic output capacitors. The device has a low 0.4V

reference voltage which is used to program the output

voltage via two external resistors. The device also has

internal current limit, overtemperature shutdown, and

reverse output current protection. The LTC3026 is avail-

able in a small 10-lead MSOP or low proﬁle (0.75mm)

10-lead 3mm × 3mm DFN package.

applicaTions

High Efﬁciency Linear Regulator

Post Regulator for Switching Supplies

Microprocessor Supply

L, LT, LTC, LTM, Linear Technology, the Linear logo and Burst Mode are registered trademarks

and ThinSOT, VLDO are trademarks of Linear Technology Corporation. All other trademarks are

the property of their respective owners.

Typical applicaTion

1.2V Output Voltage from 1.5V Input Supply

Dropout Voltage vs Output Current

150

10µH

BST

5V BOOST

CONVERTER

4.7µF

100

0.4V

1.2V

1.5V

2.0V

2.6V

= 1.5V

4.7µF

–

= 1.2V,

OUT

ADJ

OUT

1.5A

8.06k

OUT

10µF

OFF ON

SHDN

LTC3026

100k

4.02k

1.0

1.5

0.5

GND

(A)

OUT

3026 TA01a

3026 TA01b

L1: MURATA LQH2MCN100K02

3026fd

ꢀ

12 3 4 5 6 7...18

中文翻译

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