LT3468-1_15 datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > LT3468-1_15

Preview

LT3468-1_15: DescriptionPhotoflash Capacitor Chargers in ThinSOT; File Size444KB，12 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

Download Datasheet Compare View All

LT3468-1_15 Overview

Photoflash Capacitor Chargers in ThinSOT

Preview

Download Datasheet

View All

LT3468/LT3468-1/LT3468-2

Photoflash Capacitor

Chargers in ThinSOT

FEATURES

■

DESCRIPTIO

■

Highly Integrated IC Reduces Solution Size

Uses Small Transformers:

5.8mm

3mm

Fast Photoflash Charge Times:

4.6s for LT3468 (0V to 320V, 100µF, V

= 3.6V)

5.7s for LT3468-2 (0V to 320V, 100µF, V

= 3.6V)

5.5s for LT3468-1 (0V to 320V, 50µF, V

= 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

Low Profile (<1mm) SOT-23 Package

The LT

3468/LT3468-1/LT3468-2 are highly integrated

ICs designed to charge photoflash capacitors in digital and

film cameras. A patented control technique* allows for the

use of extremely small transformers. Each device contains

an on-chip high voltage NPN power switch. Output voltage

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.

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

Driving CHARGE low puts the part in shutdown. The DONE

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.

APPLICATIO S

■

Digital / Film Camera Flash

PDA / Cell Phone Flash

Emergency Strobe

TYPICAL APPLICATIO

LT3468 Photoflash Charger Uses

High Efficiency 4mm Tall Transformer

DANGER HIGH VOLTAGE – OPERATION BY HIGH VOLTAGE

TRAINED PERSONNEL ONLY

VIN

2.5V TO 8V

4.7µF

1:10.2

320V

= 3.6V

OUT

= 100µF

100µF

100k

DONE

CHARGE

LT3468

DONE

CHARGE

346812 TA01

OUT

50V/DIV

AVERAGE

INPUT

CURRENT

1A/DIV

GND

LT3468 Charging Waveform

1s/DIV

3468 G01

346812fa

LT3468-1_15 Related Products

	LT3468-1_15	LT3468-2_15	LT3468_15
Description	Photoflash Capacitor Chargers in ThinSOT	Photoflash Capacitor Chargers in ThinSOT	Photoflash Capacitor Chargers in ThinSOT

Recommended Resources

Concentrated Typical Circuit for Reference Voltage a

Electronic fish lure

tone control circuit

Programmable switched capacitor low pass filter circuit diagram

TV Stereo-Multi-Language Decoder

Download any of the books to get a gift | "New Concept Analog Circuits" all five volumes / "ADI Reference Circuits Collection (Volume 4)": 【E-book Introduction】 A collection of five volumes of "New Concept Analog Circuits"The collection of "New Concept Analog Circuits" includes "Transistors", "Negative Feedback and Operational Amplifiers...; EEWORLD社区 ADI Reference Circuit

MPS NOW one-on-one, real-time, online technical support, invite you to experience it!: What problems have you encountered while using MPS products? When you encounter these problems, do you want to contact the original factory engineers to discuss solutions? Do you have doubts and conce...; eric_wang Power technology

Which mobile phone CPU is better, Snapdragon 710 or G90T?: [i=s]This post was last edited by led2015 on 2019-12-3 13:36[/i]I looked up a lot of Baidu, but still don’t understand which one is better, if I don’t play games, I just want to open various apps, wat...; led2015 Talking

EEWORLD University Hall----Live Replay: TI Servo Drive Current and Voltage Measurement Solution: Live replay: Current and voltage measurement solutions in TI servo drives : https://training.eeworld.com.cn/course/6162...; hi5 Integrated technical exchanges

[GD32L233C-START Review] 2. Create a minimal project that suits you: In the previous article, the platform has been built, and the template project provided by GD can be compiled normally and downloaded to the development board. At this point, you can actually start de...; xinmeng_wit GD32 MCU

[Third Batch of Shortlist] 2022 Digi-Key Innovation Design Competition: After much anticipation, the third batch of shortlisted candidates for the 2022 Digi-Key Innovation Design Competition has been announced. Thank you for your attention and support to this competition,...; EEWORLD社区 DigiKey Technology Zone

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components