LT1619ES8 Linear Technology, LT1619ES8 Datasheet
LT1619ES8
Specifications of LT1619ES8
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LT1619ES8 Summary of contents
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... The oscillator can also be synchronized exter- nally up to 500kHz. No load quiescent current is 140 A and shutdown current The LT1619 is available in 8-lead MSOP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation 3.3V ...
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... SENSE CONDITIONS Measured at the FB Pin 1.9V V 18V REF COMP V = 1.5V COMP 1.9V V 18V IN ORDER PART NUMBER TOP VIEW LT1619ES8 7 DRV 6 GATE SENSE 5 S8 PART MARKING S8 PACKAGE 1619 = 125 C, = 120 MIN TYP MAX 1.22 1.24 1.26 0.004 0. 170 260 ...
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ELECTRICAL CHARACTERISTICS The denotes specifications which apply over the full operating temperature range, otherwise specifications are 2.5V COMP open DRV S/S IN PARAMETER Current Sense Input Current Current ...
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LT1619 W U TYPICAL PERFOR A CE CHARACTERISTICS Shutdown Supply Current vs Input Voltage – ...
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CTIO S S/S (Pin 1): Shutdown and Synchronization. Shutdown is active low with a typical threshold voltage of 0.9V. For normal operation, the S/S pin is tied to V synchronize the controller, drive the S/S ...
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LT1619 U OPERATIO The LT1619 is a fixed frequency current mode switching regulator PWM controller that can be used in boost, SEPIC or flyback modes. The device operates from an input supply range of 1.9V to 18V, and has a ...
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U OPERATIO or less than the number specified in Table 1 are accept- able. The maximum duty cycle is essentially unaffected by synchronization. The device will go into shutdown mode if the S/S pin voltage stays below the shutdown threshold ...
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LT1619 U U APPLICATIO S I FOR ATIO Power MOSFET MOSFET power dissipation can be separated into fre- quency independent and frequency dependent compo- nents. The R loss in the switch is the product of the DS(ON) mean square switch ...
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U U APPLICATIO S I FOR ATIO Diode Schottky diodes are recommended for low output voltage applications because of their low forward voltage. Since Schottky diodes have negligible stored charge, charge dumping loss is also reduced. The reverse breakdown voltage ...
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LT1619 U U APPLICATIO S I FOR ATIO CORNER (The input impedance of the sense amplifier at the SENSE pin is 2500 and R is typically less than 137 .) ...
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U U APPLICATIO S I FOR ATIO Here the input voltage ripple is filtered with R3, R4 and prevent the input ripple from falsely tripping the LT1619 synchronization circuit recommended that ...
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LT1619 U U APPLICATIO S I FOR ATIO Increasing Ramp Compensation While Synchronizing The LT1619 is synchronized by forced discharge of the internal timing ramp. The timing ramp amplitude de- creases as the synchronization frequency increases. Since the internal compensation ...
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U U APPLICATIO S I FOR ATIO C Z Figure 14. Recommended Component Placement for the Boost Converters in Figures 15a and 16a IN2 LT1619 ...
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LT1619 U U APPLICATIO S I FOR ATIO 1 S LT1619 75k P GND 150pF C Z 15nF C : SANYO POSCAP 6TPB150M 2 IN1 C : SANYO POSCAP 10TPB220M 4 ...
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U U APPLICATIO S I FOR ATIO 1 S 68.1k P GND 47pF C Z 2200pF C : SANYO OS-CON 10SA100M IN1 C : SANYO OS-CON 16SA150M 4 OUT1 D1: MOTOROLA ...
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LT1619 U TYPICAL APPLICATIO 4.75V TO 5.25V + 1500 F 1N749 6.3V 4.3V SANYO MV- 2.2nF 36k 4 22nF T1: COILTRONICS CTX02-14261, EFD20-3F3, 6 WINDINGS EACH • • • ...
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U TYPICAL APPLICATIO 10.5V TO 13.7V 0. 8.1V 50V 1W 20k MBRS1100T3 0.1 F 82k DRV LT1619 10k 3 6 150 F V GATE C 20V SANYO ...
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LT1619 PACKAGE DESCRIPTION 5.23 (.206) MIN 0.42 0.04 (.0165 .0015) TYP RECOMMENDED SOLDER PAD LAYOUT 0.254 (.010) GAUGE PLANE 0.18 (.077) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR ...
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... MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... C5 D2 1.5 F MBRS340T3 100V V OUT 5V 0. 100 10 F 3.74k 10V 1% C1 0.022 F R10 1.24k 1% 1619 TA01 30V, 42V Switch Voltage IN 10V, 36V Switch Voltage IN 36V IN LT/TP 1002 1K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2000 1619fa ...