LT3791_15 datasheet(1/28 Pages) LINER

部件名	LT3791

功能描述	60V 4-Switch Synchronous Buck-Boost LED Driver Controller

PDF	28 Pages

Scroll/Zoom	100%

制造商	LINER [Linear Technology]

网页	http://www.linear.com

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1 / 28 page

LT3791

1

3791fb

For more information www.linear.com/LT3791

Typical applicaTion

FeaTures

DescripTion

60V 4-Switch Synchronous

Buck-Boost LED Driver

Controller

The LT®3791 is a synchronous 4-switch buck-boost LED

driver controller. The controller can regulate LED current

up to 52V of LED string with input voltages above, below,

or equal to the output voltage. The constant-frequency,

forced-continuous current mode architecture allows its

frequency to be adjusted or synchronized from 200kHz to

700kHz. No top MOSFET refresh switching cycle is needed

in buck or boost operation. With 60V input, 60V output

capability and seamless transitions between operating

regions, the LT3791 is ideal for LED driver applications in

automotive,industrial,andevenbattery-poweredsystems.

The LT3791 provides input current monitor, LED current

monitor, and open or shorted LED fault condition, during

which the LT3791 either restarts or latches off.

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered and True Color PWM

is a trademark of Linear Technology Corporation. All other trademarks are the property of their

respective owners.

98.5% Efficient 100W (33.3V 3A) Buck-Boost LED Driver

applicaTions

n

4-Switch Single Inductor Architecture Allows VIN

Above, Below or Equal to VOUT

n

Synchronous Switching: Up to 98.5% Efficiency

n

Wide VIN Range: 4.7V to 60V

n

Wide VOUT Range: 0V to 60V (52V LED)

n

±6% LED Current Accuracy: 0V ≤ VLED < 52V

n

True Color PWM™ and Analog Dimming

n

LED and Input Current Regulation with Current

Monitor Outputs

n

No Top MOSFET Refresh in Buck or Boost

n

VOUT Disconnected From VIN During Shutdown

n

Open or Shorted LED Fault Protection

n

Capable of 100W or Greater per IC

n

38-Lead TSSOP with Exposed Pad

Efficiency vs VIN

n

Automotive Head Lamps/Running Lamps

n

General Purpose Lighting

50

0.003

470nF

VIN

15V TO 58V

INTVCC

TG1

BG1

SNSP

SNSN

PGND

BST1

BST2

BG2

SW2

TG2

RT

LT3791

SWI

SHORTLED

OPENLED

IVINN

IVINP

INTVCC

1µF

VIN

PWM

IVINMON

ISMON

CLKOUT

EN/UVLO

OVLO

200k

VREF

CTRL

86.6k

300kHz

VC

SYNC

SS

SGND

PWMOUT

15.8k

28k

200k

499k

0.1µF

10nF

22nF

3791 TA01a

2.2µF

100V

×5

4.7µF

50V

×5

0.004

ISP

ISN

FB

0.033

0.1µF

10µH

4.7µF

3A, 100W

LED POWER

1M

34.2k

INPUT VOLTAGE (V)

10

96

98

100

50

3791 TA01b

94

92

90

20

30

40

60

BUCK

BOOST

BUCK-BOOST

类似零件编号 - LT3791_15

制造商	部件名	数据表	功能描述
Linear Technology	LT3791-1	556Kb / 30P	High Efficiency, Synchronous,4-Switch Buck-Boost Controller
	LT3791-1	332Kb / 26P	60V 4-Switch Synchronous Buck-Boost Controller
	LT3791-1	332Kb / 26P	60V 4-Switch Synchronous Buck-Boost Controller

More results

类似说明 - LT3791_15

制造商	部件名	数据表	功能描述
Diodes Incorporated	ZXLD1370	856Kb / 33P	60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER DS32165 Rev. 2 - 2
	ZXLD1370	731Kb / 35P	60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER CONTROLLER Rev 3
	ZXLD1371	1Mb / 42P	60V HIGH ACCURACY BUCK/BOOST/BUCK-BOOST LED DRIVER-CONTROLLER FEBRUARY 2012
Linear Technology	LT3791EFE-1	332Kb / 26P	60V 4-Switch Synchronous Buck-Boost Controller
	LT3790	451Kb / 28P	60V Synchronous 4-Switch Buck-Boost Controller
	LT3791-1	332Kb / 26P	60V 4-Switch Synchronous Buck-Boost Controller
	LT3790	603Kb / 10P	60V Four-Switch Synchronous Buck-Boost Controller
	LT8391AIFE	533Kb / 10P	60V 2MHz Synchronous Buck-Boost LED Driver
	LT8391EFE	753Kb / 8P	60V Synchronous 4-Switch Buck-Boost Led Controller with Spread Spectrum
Renesas Technology Corp	ISL81601	2Mb / 54P	60V Bidirectional 4-Switch Synchronous Buck-Boost Controller May 27, 2021