Datasheet > LTC3834-1

LTC3834-1

更新时间： 2024-01-02 20:18:37

品牌	Logo	应用领域
凌特 - Linear		控制器
页数	文件大小	规格书
28页	291K
描述
30μA IQ Synchronous Step-Down Controller

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中文翻译

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数据手册

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LTC3834-1 数据手册

LTC3834-1

30μA I Synchronous

Step-Down Controller

FEATURES

DESCRIPTIO

TheLTC^®3834-1isahighperformancestep-downswitch-

ing regulator controller that drives an all N-channel syn-

chronous power MOSFET stage. A constant-frequency

current mode architecture allows a phase-lockable fre-

quency of up to 650kHz.

■

Wide Output Voltage Range: 0.8V V _OUT10V

■

Low Operating I_Q: 30μA

OPTI-LOOP^®Compensation Minimizes C_OUT

1ꢀ Output Voltage Accuracy

Wide V_INRange: 4V to 36V

■

Phase-Lockable Fixed Frequency 140kHz to 650kHz

The 30μA no-load quiescent current extends operating

life in battery powered systems. OPTI-LOOP compen-

sation allows the transient response to be optimized over

a wide range of output capacitance and ESR values. The

LTC3834-1 featuresaprecision0.8Vreference. The4Vto

36V input supply range encompasses a wide range of bat-

tery chemistries.

■

Dual N-Channel MOSFET Synchronous Drive

■

Very Low Dropout Operation: 99% Duty Cycle

■

Adjustable Output Voltage Soft-Start or Tracking

■

Output Current Foldback Limiting

■

Output Overvoltage Protection

■

Low Shutdown I_Q: 4μA

■

Selectable Continuous, Pulse-Skipping or

Burst Mode^®Operation at Light Loads

The TRACK/SS pin ramps the output voltage during start-

up. Current foldback limits MOSFET heat dissipation

during short-circuit conditions. An enhanced feature set

part (LTC3834) is available.

■

Small 16-Lead Narrow SSOP or 5mm × 3mm

DFN Package

Comparison of LTC3834 and LTC3834-1

CLKOUT/

APPLICATIO S

■

Automotive Systems

PART #

PHASMD

EXTV

PGOOD

PACKAGES

■

Telecom Systems

LTC3834

LTC3834-1

YES

FE20/4 × 5 QFN

GN16/3 × 5 DFN

■

Battery-Operated Digital Devices

Distributed DC Power Systems

■

, LT, LTC, LTM, Burst Mode, PolyPhase and OPTI-LOOP are registered trademarks of

Linear Technology Corporation. All other trademarks are the property of their respective

owners. Protected by U.S. Patents, including 5408150, 5481178, 5705919, 5929620,

6304066, 6498466, 6580258, 6611131.

TYPICAL APPLICATIO

Efficiency and Power Loss

vs Load Current

High Efficiency Step-Down Converter

10000

1000

100

PLLLPF

4V TO 36V

10μF

RUN

0.01μF

0.22μF

TRACK/SS

BOOST

3.3μH

OUT

0.012Ω

3.3V

560pF

54.2k

LTC3834-1

150pF

SGND

PLLIN/MODE

INTV

150μF

4.7μF

68.1k

–

SENSE

215k

PGND

0.1

0.000001

0.0001

0.01

OUTPUT CURRENT (A)

38341 TA01

38341 TA01b

38341f

12 3 4 5 6 7...28

中文翻译

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与LTC3834-1相关器件

型号	品牌	获取价格	描述	数据表
LTC3834EDHC-1#PBF	Linear	获取价格	LTC3834-1 - 30µA IQ Synchronous Step-Down Controller; Package: DFN; Pins: 16; Tem
LTC3834EDHC-1-PBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EDHC-1-TRPBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EFE#PBF	Linear	获取价格	LTC3834 - 30µA IQ Synchronous Step-Down Controller; Package: TSSOP; Pins: 20; Tem
LTC3834EFE-PBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EFE-TRPBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EGN-1-PBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EGN-1-TRPBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller
LTC3834EUFD#PBF	Linear	获取价格	LTC3834 - 30µA IQ Synchronous Step-Down Controller; Package: QFN; Pins: 20; Tempe
LTC3834EUFD-PBF	Linear	获取价格	30μA IQ Synchronous Step-Down Controller

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