LT3782IFE#TRPBF Linear Technology, LT3782IFE#TRPBF Datasheet
LT3782IFE#TRPBF
Specifications of LT3782IFE#TRPBF
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LT3782IFE#TRPBF Summary of contents
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... TSSOP and 4mm × 5mm QFN packages. For new designs use the LT3782A which has improved phase matching L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Protected by U.S. Patents including 6144194. ...
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... T = 38°C/ W JMAX JA EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT3782EFE#PBF LT3782EFE#TRPBF LT3782IFE#PBF LT3782IFE#TRPBF LT3782EUFD#PBF LT3782EUFD#TRPBF LEAD BASED FINISH TAPE AND REEL LT3782EFE LT3782EFE#TR LT3782IFE LT3782IFE#TR LT3782EUFD LT3782EUFD#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. ...
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ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Overall Supply Voltage ( Supply Current (I ) VCC Shutdown RUN Threshold RUN Threshold Hysteresis Supply Current in Shutdown RUN Pin Input Current Voltage Amplifi ...
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LT3782 ELECTRICAL CHARACTERISTICS temperature range, otherwise specifi cations are at T PARAMETER Gate Driver V GBIAS BGATE1, BGATE2 High Voltage BGATE1, BGATE2 Source Current (Peak) BGATE1, BGATE2 Low Voltage BGATE1, BGATE2 Sink Current (Peak) SGATE1, SGATE2 High Voltage SGATE1, SGATE2 ...
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TYPICAL PERFORMANCE CHARACTERISTICS GBIAS GBIAS 11.0 10.9 10.8 10.7 10.6 10.5 10.4 10.3 10.2 10.1 10 (mA) GBIAS 3782 G01 Switching Frequency vs R FREQ 600 500 400 300 200 100 ...
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LT3782 PIN FUNCTIONS (FE/UFD) SGATE2 (Pin 1/Pin 26): Second Phase Synchronous Drive Signal. An external driver buffer is needed to drive the top synchronous power FET. SGATE1 (Pin 2/Pin 27): First Phase Synchronous Drive Signal. An external driver buffer is ...
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BLOCK DIAGRAM – 1V AND CLAMPED AT 11V C GBIAS REGULATOR 20μF + LOW POWER SHUTDOWN R6 A5 RUN – 0. – + 2.44V BGATE1 ...
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LT3782 APPLICATIONS INFORMATION Operation The LT3782 is a two phase constant frequency current mode boost controller. Switching frequency can be programmed up to 500kHz. During normal switching cycles, the two channels are controlled by internal fl ip-fl ops and are ...
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APPLICATIONS INFORMATION With a 200ns one-shot timer on chip, the LT3782 provides fl exibility on the external sync pulse width. The sync pulse threshold is about 1.2V (Figure 1). Current Limit Current limit is set by the 60mV threshold across ...
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LT3782 APPLICATIONS INFORMATION then should be 80k and V FREQ1 FREQ2 be 1V, with V = 2.3V then R RSET FREQ1 = 32.5k (see Figure 3). Duty Cycle Limit When DCL pin is shorted to R pin ...
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APPLICATIONS INFORMATION The Peak and Average Input Currents The control circuit in the LT3782 measures the input current by using a sense resistor in each MOSFET source, so the output current needs to be refl ected back to the input ...
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LT3782 APPLICATIONS INFORMATION The gate drive voltage is set by the 10V GBIAS regulator. Consequently, 10V rated MOSFETs are required in most high voltage LT3782 applications. Pay close attention to the BV DSS MOSFETs relative to the maximum actual switch ...
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APPLICATIONS INFORMATION From a known power dissipated in the power MOSFET, its junction temperature can be obtained using the following formula • FET TH(JA) The used in this equation ...
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LT3782 APPLICATIONS INFORMATION For a given V and can calculate the duty cycle D IN OUT and then derive the output RMS ripple current from Figure 6. After choosing output capacitors with suffi cient RMS ripple current ...
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APPLICATIONS INFORMATION 2. Power MOSFET switching and conduction losses O(MAX • FET DS(ON) 1– D MAX I O(MAX • V • • RSS 1– D MAX 2 3. ...
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LT3782 APPLICATIONS INFORMATION For best electrical performance, the LT3782 circuit should be laid out as follows: Place all power components in a tight area. This will minimize the size of high current loops. Orient the input and output capacitors and ...
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TYPICAL APPLICATIONS 1 SGATE2 2 SGATE1 GND 5 SYNC 6 DELAY 7 DCL 10Ω CS1 SENSE1 10nF 9 – SENSE1 59k 10 SLOPE 82k 11 R SET 12 – SENSE2 10nF 10Ω CS2 ...
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LT3782 PACKAGE DESCRIPTION 4.75 (.187) 6.60 ±0.10 4.50 ±0.10 SEE NOTE 4 RECOMMENDED SOLDER PAD LAYOUT 4.30 – 4.50* (.169 – .177) 0.09 – 0.20 0.50 – 0.75 (.0035 – .0079) (.020 – .030) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. ...
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... ON THE TOP AND BOTTOM OF PACKAGE 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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. UFD Package 28-Lead Plastic QFN (4mm × ...
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... PolyPhase™ Synchronous Controller LTC3731 3- to 12-Phase Step-Down Synchronous Controller LTC3803 SOT-23 Flyback Controller LTC3806 Synchronous Flyback Controller PolyPhase is a registered trademark of Linear Technology Corporation. ThinSOT and No R Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● V INA ...