Datasheet > LTC3406AB-2

LTC3406AB-2

更新时间： 2024-02-04 15:33:20

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
16页	322K
描述
2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

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LTC3406AB-2 数据手册

LTC3406AB-2

2.25MHz, 600mA

Synchronous Step-Down

Regulator in ThinSOT

DESCRIPTION

TheLTC^®3406AB-2isahighefﬁciencymonolithicsynchro-

nous buck regulator using a constant frequency, current

mode architecture. Supply current with no load is 200μA

and drops to <1μA in shutdown. The 2.5V to 5.5V input

voltage range makes the LTC3406AB-2 ideally suited for

single Li-Ion battery-powered applications. 100% duty

cycle provides low dropout operation, extending battery

life in portable systems. PWM pulse skipping mode op-

eration provides very low output ripple voltage for noise

sensitive applications.

FEATURES

■

High Efﬁciency: Up to 96%

■

600mA Output Current

■

2.5V to 5.5V Input Voltage Range

■

2.25MHz Constant Frequency Operation

■

No Schottky Diode Required

■

Low Dropout Operation: 100% Duty Cycle

■

±±2 Output ꢀoltage Accuracy

Low Quiescent Current: 200µA

■

0.6V Reference Allows Low Output Voltages

■

Shutdown Mode Draws <1µA Supply Current

■

Internal Soft-Start Limits Inrush Current

Switching frequency is internally set at 2.25MHz, allowing

the use of small surface mount inductors and capacitors.

The internal synchronous switch increases efﬁciency and

eliminates the need for an external Schottky diode. Low

outputvoltagesareeasilysupportedwiththe0.6Vfeedback

reference voltage. The LTC3406AB-2 is available in a low

proﬁle (1mm) ThinSOT package. Refer to LTC3406A for

applications that require Burst Mode^®operation.

■

Current Mode Operation for Excellent Line and

Load Transient Response

■

Overtemperature Protected

Low Proﬁle (1mm) ThinSOT^TMPackage

■

APPLICATIONS

■

Cellular Telephones

■

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

Burst Mode is a registered trademark of Linear Technology Corporation.

ThinSOT is a registered trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

Protected by U.S. Patents including 5481178, 6580258.

Personal Navigation Devices

■

Wireless and DSL Modems

■

Digital Still Cameras

■

Media Players

■

Portable Instruments

TYPICAL APPLICATION

Efﬁciency vs Output Current

100

2.2μH*

= 1.8V

OUT

1.8V

†

22pF

600mA

4.7μF

CER

OUT

LTC3406AB-2

10μF

CER

RUN

GND

619k

*MURATA LQH32CN2R2M33

**TAIYO YUDEN JMK316BJ106I

^†TAIYO YUDEN JMK212BJ475

309k

3406AB2 TA01a

= 2.7V

= 3.6V

= 4.2V

0.1

100

1000

OUTPUT CURRENT (mA)

3406AB2 TA01b

3406ab2f

12 3 4 5 6 7...16

中文翻译

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与LTC3406AB-2相关器件

型号	品牌	获取价格	描述	数据表
LTC3406AB-2_15	Linear	获取价格	2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
LTC3406ABES5#PBF	Linear	获取价格	IC 1.3 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5, LEAD FREE, PLASTIC, MO-1
LTC3406ABES5#TRM	Linear	获取价格	IC 1.3 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5, LEAD FREE, PLASTIC, MO-1
LTC3406ABES5#TRMPBF	Linear	获取价格	暂无描述
LTC3406ABES5#TRPBF	Linear	获取价格	LTC3406AB - 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT; Package: SOT; Pins:
LTC3406ABES5-2#TRPBF	Linear	获取价格	LTC3406AB-2 - 2.25MHz, 600mA Synchronous Step-Down Regulator in ThinSOT; Package: SOT; Pin
LTC3406ABES5-PBF	Linear	获取价格	1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
LTC3406ABES5-TRPBF	Linear	获取价格	1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT
LTC3406AES5#TRMPBF	Linear	获取价格	LTC3406A - 1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT; Package: SOT; Pins: 5
LTC3406AES5-PBF	Linear	获取价格	1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT

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