LT3750| Datasheet

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

LT3750 Capacitor Charger Controller

FEATURES

DESCRIPTIO

Charges Any Size Capacitor Easily Adjustable Output Voltage Drives High Current NMOS FETs Primary-Side Sense--No Output Voltage Divider Necessary Wide Input Range: 3V to 24V Drives Gate to VCC 2V Available in 10-Lead MS Package

APPLICATIO S

Emergency Warning Beacons Professional Photoflash Systems Security/Inventory Control Systems High Voltage Power Supply Electric Fences Detonators

The LT 3750 is a flyback converter designed to rapidly charge large capacitors to a user-adjustable target voltage. A patented boundary mode control scheme* minimizes transition losses and reduces transformer size. The transformer turns ratio and two external resistors easily adjust the output voltage.* A low 78mV current sense accurately limits peak switch current and also helps to maximize efficiency. With a wide input voltage range, the LT3750 can operate from a variety of power sources. A typical application can charge a 100uF capacitor to 300V in less than 300ms. The CHARGE pin gives full control of the LT3750 to the user. The DONE pin indicates when the capacitor has reached its programmed value and the part has stopped charging.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. *Protected by U.S. Patents, including 6518733, 6636021.

TYPICAL APPLICATIO
VTRANS 10uF

300V, 6A Capacitor Charger
T1 1:10 56uF 2 D1 VOUT 300V

+
100uF

300 VTRANS = 18V 250 VTRANS = 6V 200 VOUT (V) 150 100

VCC 12V 10uF 100k

VCC DONE

VTRANS RVOUT RDCM LT3750 GATE SOURCE

60.4k

43k

OFF ON

CHARGE

M1

GND

RBG 12m 2.49k 100pF
3750 TA01a

50 0 0 0.1 0.2 0.3 TIME (SECONDS) 0.4 0.5
3750 TA03c

U
6A Charge Time
VTRANS = 12V
3750fa

U

U

1

LT3750 Datasheet linear Download PDF

Add this permalink to your bookmarks for future download of LT3750 datasheet

Permalink: http://datasheet.emcelettronica.com/linear/LT3750

LT3750 DATASHEET