Datasheet > LTC3335

LTC3335

更新时间： 2023-12-20 18:46:32

品牌	Logo	应用领域
亚德诺 - ADI		转换器计数器
页数	文件大小	规格书
28页	525K
描述
具集成型库仑计数器的毫微功率降压-升压型 DC/DC 转换器

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中文翻译

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数据手册

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LTC3335 数据手册

LTC3335

Nanopower Buck-Boost

DC/DC with Integrated

Coulomb Counter

FeaTures

DescripTion

The LTC^®3335 is a high efficiency, low quiescent current

(680nA) buck-boost DC/DC converter with an integrated

precision coulomb counter which monitors accumulated

batterydischargeinlonglifebatterypoweredapplications.

The buck-boost can operate down to 1.8V on its input and

provides eight pin-selectable output voltages with up to

50mA of output current.

680nA Input Quiescent Current (Output in

Regulation at No Load)

1.8V to 5.5V Input Operating Range

Selectable Output Voltages of 1.8V, 2.5V, 2.8V,

3V, 3.3V, 3.6V, 4.5V, 5V

Integrated Coulomb Counter Measures

Accumulated Battery Discharge

5ꢀ Battery Discharge Measurement Accuracy

The coulomb counter stores the accumulated battery dis-

Programmable Peak Input Current of 5mA, 10mA,

chargeinaninternalregisteraccessibleviaanI Cinterface.

15mA, 25mA, 50mA, 100mA, 150mA, 250mA

The LTC3335 features a programmable discharge alarm

threshold. When the threshold is reached, an interrupt is

generated at the IRQ pin.

Up to 50mA of Output Current

Up to 90% Efficiency

Programmable Coulomb Counter Prescaler for Wide

To accommodate a wide range of battery types and sizes,

the peak input current can be selected from as low as 5mA

to as high as 250mA and the full-scale coulomb counter

has a programmable range of 32,768:1.

Range of Battery Sizes

Programmable Discharge Alarm Threshold

I C Interface

Low Profile (0.75mm) 20-Lead (3mm × 4mm) QFN

Package

TheLTC3335isavailableina3mm×4mmQFN-20package.

L, LT, LTC, LTM, Linear Technology, the Linear logo, SmartMesh and Dust Networks are

registered trademarks of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

applicaTions

Long Lifetime Primary Cell Battery Applications

Wireless Sensors

Remote Monitors

Dust Networks^®SmartMesh^®Applications

Typical applicaTion

Efficiency vs Load for 100mA

I_PEAKSetting

2.2mH TO 47µH

100

= 5mA TO 250mA

PEAK

SW1

BAT

SW2

1.8V TO 5V

OUT

PRIMARY CELL

10µF

47µF

PBAT

OUT

10k

LTC3335

SCL

SDA

I C

IRQ

= 1.8V

= 2.5V

= 3.3V

= 5V

OUT

IPK[2:0]

PGOOD

BAT = 3.6V

L = 150µH

DCR = 0.3Ω

OUT[2:0]

GND

3335 TA01

0.001

0.01

0.1

100

(mA)

LOAD

3335 TA01a

3335f

For more information www.linear.com/LTC3335

12 3 4 5 6 7...28

中文翻译

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与LTC3335相关器件

型号	品牌	获取价格	描述	数据表
LTC3336	ADI	获取价格	具有可编程峰值输入电流的 15V/250mA 毫微功率降压 DC/DC
LTC3337	ADI	获取价格	具有精密库伦计数器的原电池SOH监控器
LTC3350	ADI	获取价格	2.5A Supercapacitor Backup Power Manager
LTC3350EUHF#PBF	Linear	获取价格	LTC3350 - High Current Supercapacitor Backup Controller and System Monitor; Package: QFN;
LTC3351	ADI	获取价格	2.5A Supercapacitor Backup Power Manager
LTC3355	Linear	获取价格	20V 1A Buck DC/DC with Integrated SCAP Charger and Backup Regulator
LTC3355	ADI	获取价格	2.5A Supercapacitor Backup Power Manager
LTC3355_15	Linear	获取价格	20V 1A Buck DC/DC with Integrated SCAP Charger and Backup Regulator
LTC3370	Linear	获取价格	60V Low IQ Buck Controller Plus 4-Channel 8A Configurable Buck DC/DCs
LTC3370	ADI	获取价格	20V, 4-Channel Buck DC/DC with 8x Configurable 1.5A Power Stages

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