Datasheet > LT3468_15

LT3468_15

更新时间： 2024-11-30 01:12:15

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	459K
描述
Photoflash Capacitor Chargers in ThinSOT

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中文翻译

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LT3468_15 数据手册

LT3468/LT3468-1/LT3468-2

Photoflash Capacitor

Chargers in ThinSOT^TM

FEATURES

DESCRIPTIO

The LT^®3468/LT3468-1/LT3468-2 are highly integrated

ICsdesignedtochargephotoflashcapacitorsindigitaland

filmcameras. Apatentedcontroltechnique*allowsforthe

useofextremelysmalltransformers.Eachdevicecontains

anon-chiphighvoltageNPNpowerswitch.Outputvoltage

detection* is completely contained within the device,

eliminating the need for any discrete zener diodes or

resistors. The output voltage can be adjusted by simply

changing the turns ratio of the transformer. The LT3468

has a primary current limit of 1.4A, the LT3468-2 has a 1A

limit, and the LT3468-1 has a 0.7A limit. These different

current limit levels result in well controlled input currents

of 500mA for the LT3468, 375mA for the LT3468-2 and

225mA for the LT3468-1. Aside from the differing current

limit, the three devices are otherwise equivalent.

■

Highly Integrated IC Reduces Solution Size

■

Uses Small Transformers:

5.8mm × 5.8mm × 3mm

■

Fast Photoflash Charge Times:

4.6s for LT3468 (0V to 320V, 100µF, V_IN= 3.6V)

5.7s for LT3468-2 (0V to 320V, 100µF, V_IN= 3.6V)

5.5s for LT3468-1 (0V to 320V, 50µF, V_IN= 3.6V)

■

Controlled Input Current:

500mA (LT3468)

375mA (LT3468-2)

225mA (LT3468-1)

■

Supports Operation from Single Li-Ion Cell, or Any

Supply from 2.5V up to 16V

■

Adjustable Output Voltage

■

No Output Voltage Divider Needed

■

Charges Any Size Photoflash Capacitor

The CHARGE pin gives full control of the part to the user.

DrivingCHARGElowputsthepartinshutdown. TheDONE

pin indicates when the part has completed charging. The

LT3468 series of parts are available in tiny low profile

(1mm) SOT-23 packages.

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

ThinSOT is a trademark of Linear Technology Corporation.

All other trademarks are the property of their respective owners.

*Protected by U.S. Patents, including 6518733.

■

Low Profile (<1mm) SOT-23 Package

APPLICATIO S

■

Digital / Film Camera Flash

■

PDA / Cell Phone Flash

■

Emergency Strobe

TYPICAL APPLICATIO

LT3468 Photoflash Charger Uses

High Efficiency 4mm Tall Transformer

LT3468 Charging Waveform

DANGER HIGH VOLTAGE – OPERATION BY HIGH VOLTAGE

TRAINED PERSONNEL ONLY

V_IN= 3.6V

C_OUT= 100µF

1:10.2

320V

2.5V TO 8V

4.7µF

V_OUT

50V/DIV

100µF

100k

AVERAGE

INPUT

LT3468

CURRENT

DONE

GND

1A/DIV

1s/DIV

3468 G01

CHARGE

346812 TA01

346812fa

12 3 4 5 6 7...12

中文翻译

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与LT3468_15相关器件

型号	品牌	获取价格	描述	数据表
LT3468-1	Linear	获取价格	Photoflash Capacitor Charger in ThinSOT
LT3468-1_15	Linear	获取价格	Photoflash Capacitor Chargers in ThinSOT
LT3468-2	Linear	获取价格	Photoflash Capacitor Chargers in ThinSOT
LT3468-2_15	Linear	获取价格	Photoflash Capacitor Chargers in ThinSOT
LT3468ES5	Linear	获取价格	Photoflash Capacitor Charger in ThinSOT
LT3468ES5-1	Linear	获取价格	Photoflash Capacitor Charger in ThinSOT
LT3468ES5-1#TR	Linear	获取价格	IC SPECIALTY ANALOG CIRCUIT, PDSO5, PLASTIC, SOT-23, MO-193, 5 PIN, Analog IC:Other
LT3468ES5-1#TRMPBF	Linear	获取价格	LT3468 - Photoflash Capacitor Chargers in ThinSOT; Package: SOT; Pins: 5; Temperature Rang
LT3468ES5-1#TRPBF	Linear	获取价格	LT3468 - Photoflash Capacitor Chargers in ThinSOT; Package: SOT; Pins: 5; Temperature Rang
LT3468ES5-2	Linear	获取价格	Photoflash Capacitor Chargers in ThinSOT

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