LT1765ES8#PBF Linear Technology, LT1765ES8#PBF Datasheet
LT1765ES8#PBF
Specifications of LT1765ES8#PBF
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LT1765ES8#PBF Summary of contents
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... Full cycle-by-cycle current control and thermal shutdown are provided. High frequency operation allows the reduc- tion of input and output fi ltering components and permits the use of chip inductors. L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. *Patent Pending CMDSH-3 0.18μF 1.5μ ...
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... EXPOSED PAD (PIN 17) SOLDERED TO LARGE COPPER PLANE ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL LT1765EFE#PBF LT1765EFE#TRPBF LT1765EFE-1.8#PBF LT1765EFE-1.8#TRPBF LT1765EFE-2.5#PBF LT1765EFE-2.5#TRPBF LT1765EFE-3.3#PBF LT1765EFE-3.3#TRPBF LT1765EFE-5#PBF LT1765EFE-5#TRPBF LT1765ES8#PBF LT1765ES8#TRPBF LEAD BASED FINISH TAPE AND REEL LT1765EFE LT1765EFE#TR LT1765EFE-1.8 LT1765EFE-1.8#TR LT1765EFE-2.5 LT1765EFE-2.5#TR LT1765EFE-3.3 LT1765EFE-3.3#TR LT1765EFE-5 LT1765EFE-5#TR ...
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ELECTRICAL CHARACTERISTICS l The denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are 5V, SHDN, SYNC and switch open unless otherwise noted 15V 0.8V, Boost = ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 TYPICAL PERFORMANCE CHARACTERISTICS FB vs Temperature (Adj) 1.220 1.215 1.210 1.205 1.200 1.195 1.190 1.185 1.180 –50 – TEMPERATURE (°C) Oscillator Frequency 1.50 1.45 1.40 1.35 1.30 1.25 1.20 1.15 1.10 –50 – ...
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TYPICAL PERFORMANCE CHARACTERISTICS Minimum Input Voltage for 2.5V Out 3.5 3.3 3.1 2.9 2.7 2.5 0.001 0.01 LOAD CURRENT (A) Input Supply Current 1200 1000 UNDERVOLTAGE 800 LOCKOUT 600 400 200 INPUT VOLTAGE (V) Maximum ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 PIN FUNCTIONS FB: The feedback pin is used to set output voltage using an external voltage divider (adjustable version) that gener- ates 1.2V at the pin when connected to the desired output voltage. The fi xed voltage 1.8V, ...
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BLOCK DIAGRAM The LT1765 is a constant frequency, current mode buck converter. This means that there is an internal clock and two feedback loops that control the duty cycle of the power switch. In addition to the normal error amplifi ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 APPLICATIONS INFORMATION APPLICATIONS INFORMATION FB RESISTOR NETWORK If an output voltage of 1.8V, 2.5V, 3. required, the respective fi xed option part, -1.8, -2.5, -3.3 or -5, should be used. The FB pin is tied ...
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APPLICATIONS INFORMATION Table 2. Surface Mount Solid Tantalum Capacitor ESR and Ripple Current E Case Size ESR (Max, Ω) AVX TPS, Sprague 593D 0.1 to 0.3 AVX TAJ 0.7 to 0.9 D Case Size AVX TPS, Sprague 593D 0.1 to ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 APPLICATIONS INFORMATION APPLICATIONS INFORMATION Table 3 VALUE IRMS PART NUMBER (μH) (Amps) Coiltcraft DO1608C-222 2.2 2.4 Sumida CDRH3D16-1R5 1.5 1.6 CDRH4D18-1R0 1.0 1.7 CDC5D23-2R2 2.2 2.2 CR43-1R4 1.4 2.5 CDRH5D28-2R6 2.6 2.6 Toko (D62F)847FY-2R4M 2.4 2.5 (D73LF)817FY-2R2M 2.2 ...
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APPLICATIONS INFORMATION An internal comparator will force the part into shutdown below the minimum V of 2.6V. This feature can be used IN to prevent excessive discharge of battery-operated sys- tems adjustable UVLO threshold is required, the shutdown ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 APPLICATIONS INFORMATION APPLICATIONS INFORMATION INPUT 15V C2 C3 0.18μF 4.7μF CERAMIC BOOST LT1765-33 OFF ON SHDN FB SYNC GND 2.2nF Figure 6. Typical Application and Layout (Topside Only Shown) rating. ...
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APPLICATIONS INFORMATION Example: with V = 10V and I IN OUT ( )( ) ( ) − • ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 APPLICATIONS INFORMATION APPLICATIONS INFORMATION Figure 8 shows the overall loop response with a 330pF VC capacitor and a typical 100μF tantalum output capacitor. The response is set by the following terms: Error amplifi er: DC gain set by ...
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APPLICATIONS INFORMATION MBRS330T3* REMOVABLE INPUT Figure 9. Dual Source Supply with 6μA Reverse Leakage CMDSH-3 C2 0.18μF BOOST INPUT 12V + LT1765 2.2μF SHDN FB SYNC GND 330pF Figure ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 APPLICATIONS INFORMATION INPUT 12V GND * SINGLE CORE WITH TWO WINDINGS COILTRONICS CTX5-1A † IF LOAD CAN GO TO ZERO, AN OPTIONAL PRELOAD MAY BE USED TO IMPROVE LOAD REGULATION D1, ...
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APPLICATIONS INFORMATION INPUT 5V 22μF Figure 12. Positive-to-Negative Low Output Ripple Converter S OUTPUT S – L1: CDRH5D28-2R5 BOLD LINES INDICATE HIGH CURRENT PATHS LT1765/LT1765-1.8/LT1765-2.5/ CMDSH-3 C2 0.22μF BOOST LT1765-5 FB SHDN D1 ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 PACKAGE DESCRIPTION 3.58 (.141) 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 ...
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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 representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... High Effi ciency Step-Up/Step-Down OUT DC/DC Converter with Burst Mode Operation LTC3727/LTC3727-1 36V, 500kHz, High Effi ciency Step-Down DC/DC Converter Burst Mode is a registered trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● ...