LT1767EMS8-5#TR Linear Technology, LT1767EMS8-5#TR Datasheet
LT1767EMS8-5#TR
Specifications of LT1767EMS8-5#TR
LT1767EMS85TR
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LT1767EMS8-5#TR Summary of contents
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... Full cycle-by-cycle short-circuit protection and ther- mal shutdown are provided. High frequency operation allows the reduction of input and output filtering compo- nents and permits the use of chip inductors. , LTC and LT are registered trademarks of Linear Technology Corporation. *Patent Pending D2 CMDSH-3 C2 ...
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... V = 25V SHDN < V < 25V, 0.4V < V < 0.9V LT1767 (Adj (Note 3) LT1767-1.8 LT1767-2.5 LT1767-3.3 LT1767-5 LT1767 (Adj) ORDER PART NUMBER LT1767EMS8E TOP VIEW LT1767EMS8E-1.8 8 SYNC LT1767EMS8E-2 SHDN LT1767EMS8E-3.3 MS8E PACKAGE LT1767EMS8E-5 MS8E PART MARKING = 125 C/W JA EXPOSED GND PAD LTZG LTZH ...
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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 ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767 TYPICAL PERFOR A CE CHARACTERISTICS SHDN Threshold vs Temperature 1.40 1.38 1.36 1.34 1.32 1.30 –50 – 100 125 TEMPERATURE ( C) 1767 G04 Minimum Input Voltage for 2.5V Out 3.5 3.3 ...
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PIN FUNCTIONS FB: The feedback pin is used to set output voltage using an external voltage divider that generates 1.2V at the pin with the desired output voltage. The fixed voltage 1.8V, 2.5V, 3.3V and 5V versions ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767-5 W BLOCK DIAGRAM The LT1767 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 ...
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U U APPLICATIONS INFORMATION 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 is tied directly to the ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767 APPLICATIONS INFORMATION Table 2. Surface Mount Solid Tantalum Capacitor ESR and Ripple Current E Case Size ESR (Max, AVX TPS, Sprague 593D 0.1 to 0.3 AVX TAJ 0.7 to 0.9 D Case Size AVX TPS, Sprague ...
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... U 4. After making an initial choice, consider the secondary things like output voltage ripple, second sourcing, etc. Use the experts in the Linear Technology’s applica- tions department if you feel uncertain about the final choice. They have experience with a wide range of inductor types and can tell you about the latest devel- opments in low profile, surface mounting, etc ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767 APPLICATIONS INFORMATION suitable, but the ESR should be <1 to ensure it can be fully recharged during the off time of the switch. The capacitor value is derived from worst-case conditions of 700ns on-time, 50mA boost ...
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U U APPLICATIONS INFORMATION prevent subharmonic switching is reduced. This type of subharmonic switching only occurs at input voltages less than twice output voltage. Higher inductor values will tend to eliminate this problem. See Frequency Compensation section for a discussion ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767 APPLICATIONS INFORMATION V IN 12V CERAMIC MINIMIZE LT1767, C3, D1 LOOP Figure 6. Typical Application and Suggested Layout (Topside Only Shown) Total power dissipation is 0.34 + 0.05 + 0.01 = 0.4W. Thermal resistance for LT1767 ...
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U U APPLICATIONS INFORMATION Notice that the catch diode’s forward voltage contributes a significant loss in the overall system efficiency. A larger, lower V diode can improve efficiency by several percent INDUCTOR LOAD ...
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LT1767/LT1767-1.8/ LT1767-2.5/LT1767-3.3/LT1767 APPLICATIONS INFORMATION The zero produced by the ESR of the tantalum output capacitor is very useful in maintaining stability. Ceramic output capacitors do not have a zero due to very low ESR, but are dominated by ...
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... INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE 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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... LTC3402 Single Cell, High Current (2A), Micropower, Synchronous 3MHz Step-Up DC/DC Converter LTC3404 1.4MHz High Efficiency, Monolithic Synchronous Step-Down Regulator Burst Mode is a trademark of Linear Technology Corporation. Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 U MS8E Package ...