lt1765es8-trpbf Linear Technology Corporation, lt1765es8-trpbf Datasheet
lt1765es8-trpbf
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lt1765es8-trpbf 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 filtering components and permits the use of chip inductors. , LTC and LT are registered trademarks of Linear Technology Corporation. * Patent Pending CMDSH-3 0.18µF 1.5µH OUTPUT 3 ...
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... SYNC Pin Current .................................................. 1mA Operating Junction Temperature Range (Note 2) ........................................... – 40°C to 125°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300° ORDER PART NUMBER GND 1 LT1765ES8 BOOST PART SW 5 MARKING ...
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ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are 15V 0.8V, Boost = V + 5V, SHDN, SYNC and switch open unless otherwise noted. IN ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 TYPICAL PERFOR A CE CHARACTERISTICS FB vs Temperature (Adj) 1.220 1.215 1.210 1.205 1.200 1.195 1.190 1.185 1.180 0 50 –50 – 100 TEMPERATURE (°C) 1765 G01 SHDN Threshold vs Temperature 1.40 1.38 1.36 ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS Minimum Input Voltage for 2.5V Out 3.5 3.3 3.1 2.9 2.7 2.5 0.001 0.01 0.1 1 LOAD CURRENT (A) 1765 G07 Current Limit Foldback 4 3 SWITCH CURRENT CURRENT 0 ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 CTIO S FB: The feedback pin is used to set output voltage using an external voltage divider (adjustable version) that gen- erates 1.2V at the pin when connected to the desired output voltage. ...
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W BLOCK DIAGRA 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 ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 APPLICATIO S I FOR ATIO FB RESISTOR NETWORK If an output voltage of 1.8V, 2.5V, 3. required, the respective fixed option part, -1.8, -2.5, -3.3 or -5, should be used. The FB pin ...
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U U APPLICATIO S I FOR ATIO 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 ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 APPLICATIO S I FOR ATIO Table 3 VALUE I RMS 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 ...
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U U APPLICATIO S I FOR ATIO 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 ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 APPLICATIO S I FOR ATIO 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 ...
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U U APPLICATIO S I FOR ATIO Example: with V = 10V and I IN OUT − • ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 APPLICATIO S I FOR ATIO Figure 8 shows the overall loop response with a 330pF V capacitor and a typical 100µF tantalum output capacitor. The response is set by the following terms: Error amplifier: DC gain ...
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U U APPLICATIO S I FOR ATIO REMOVABLE INPUT Figure 9. Dual Source Supply with 6µA Reverse Leakage C2 0.18µF BOOST INPUT 12V + LT1765 2.2µF SHDN FB SYNC GND ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765 APPLICATIO S I FOR ATIO INPUT 12V GND * SINGLE CORE WITH TWO WINDINGS COILTRONICS CTX5-1A † IF LOAD CAN GO TO ZERO, AN OPTIONAL PRELOAD MAY BE USED ...
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U U APPLICATIO S I FOR ATIO INPUT 5V 22µF Figure 12. Positive-to-Negative Low Output Ripple Converter OUTPUT – LT1765/LT1765-1.8/LT1765-2. CMDSH-3 C2 0.22µF BOOST LT1765-5 FB SHDN D1 GND SYNC V ...
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LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 PACKAGE DESCRIPTIO 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 (.0035 – .0079) NOTE: 1. CONTROLLING DIMENSION: MILLIMETERS 2. DIMENSIONS ARE IN 3. DRAWING NOT TO ...
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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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... High Efficiency Step-Up/Step-Down OUT DC/DC Converter with Burst Mode Operation LTC3727/LTC3727-1 36V, 500kHz, High Efficiency 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 ● ...