LT1307CS8 Linear Technology, LT1307CS8 Datasheet
LT1307CS8
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LT1307CS8 Summary of contents
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... The devices work with just output capaci- tance and require only input bypassing. The LT1307/LT1307B are available in 8-lead MSOP, PDIP and SO packages. , LTC and LT are registered trademarks of Linear Technology Corporation. Burst Mode is a registered trademark of Linear Technology Corporation. D1 C1: MURATA-ERIE GRM235Y5V105Z01 ...
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... SHDN IN CONDITIONS Not Switching (LT1307) Not Switching (LT1307B SHDN REF ( ( ORDER PART NUMBER LT1307CN8 8 LBO LT1307CS8 7 LBI LT1307IS8 LT1307BCS8 5 SW LT1307BIS8 S8 PACKAGE 8-LEAD PLASTIC SO S8 PART MARKING = 100 C/W (N8 120 C/W (S8) JA 1307 1307I 1307B 1307BI = MIN TYP MAX 50 90 1.0 1 ...
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ELECTRICAL CHARACTERISTICS The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T Commercial Grade 1.1V SYMBOL PARAMETER Maximum Duty Cycle Switch Current Limit (Note ...
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LT1307/LT1307B ELECTRICAL C HARA TERISTICS C The denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T Industrial Grade – 1.1V SYMBOL PARAMETER I Quiescent ...
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W U TYPICAL PERFOR A CE CHARACTERISTICS 5V Output Efficiency, Circuit of Figure 1 (LT1307 1.00V 1.25V 1. 100 200 0.1 LOAD CURRENT (mA) ...
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LT1307/LT1307B W U TYPICAL PERFOR A CE CHARACTERISTICS Feedback Voltage vs Temperature 1.230 1.225 1.220 1.215 1.210 1.205 1.200 –50 – TEMPERATURE ( C) 1307 G10 Transient Response (LT1307) V OUT 200mV/DIV AC COUPLED I L ...
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CTIO S V (Pin 1): Compensation Pin for Error Amplifier. Con- C nect a series RC from this pin to ground. Typical values are 100k and 680pF. Minimize trace area (Pin 2): ...
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LT1307/LT1307B U U APPLICATIO S I FOR ATIO OPERATION The LT1307 combines a current mode, fixed frequency PWM architecture with Burst Mode micropower operation to maintain high efficiency at light loads. Operation can best be understood by referring to the ...
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U U APPLICATIO S I FOR ATIO Trace B. Similarly, Figure 4 details the two circuits with a load step from 5mA to 45mA with a 1.5V input. The LT1307B also can be used in lower current applica- tions where ...
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LT1307/LT1307B U U APPLICATIO S I FOR ATIO away from 455kHz. Figure 8 shows the noise spectrum of the converter with the load increased to 20mA. The LT1307 shifts out of Burst Mode operation, eliminating low frequency ripple. Spectral energy ...
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U U APPLICATIO S I FOR ATIO V OUT 200mV/DIV AC COUPLED 51mA I L 1mA 5ms/DIV Figure 11a. V Pin Left Unconnected. Output Ripple C Voltage is 300mV Under Load P-P V OUT 200mV/DIV AC COUPLED 51mA I L ...
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... Lastly, the inductor should have low DCR (copper wire resistance) to prevent efficiency-killing losses. Linear Technology has identified several induc- tors suitable for use with the LT1307. This is not an exclusive list. There are many magnetics vendors whose components are suitable for use. A few vendor’s compo- ...
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U U APPLICATIO S I FOR ATIO tions where small size is not critical, Panasonic HFQ series aluminum electrolytic capacitors have been found to per- form well. Table 2. Vendor Telephone Numbers VENDOR COMPONENTS Coilcraft Inductors Marcon Capacitors Murata-Erie Inductors, ...
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LT1307/LT1307B U U APPLICATIO S I FOR ATIO REVERSE BATTERY CONSIDERATIONS The LT1307 is built on a junction-isolated bipolar process. The p-type substrate is connected to the GND pin of the LT1307. Substrate diodes, normally reverse-biased, are present on the ...
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U TYPICAL APPLICATIO CERAMIC 100k 2 CELLS M1 2N7002 1nF GROUND = HIGH POWER/LOW NOISE FLOAT = Burst Mode OPERATION This circuit overcomes the limitation of load-based transitioning between Burst Mode operation and constant switching mode by ...
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LT1307/LT1307B U TYPICAL APPLICATIO 1.4V TO 3.3V + C1, C2: PANASONIC ECA0JFQ221 L1: SUMIDA CD43-100 V IN 2.1V TO 4.8V L1: COILTRONICS CTX10 MURATA ERIE LQH3C100 EFFICIENCY 70% TO 73% Constant Current NiCd Battery Charger ...
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U TYPICAL APPLICATIO CELL L1: MURATA-ERIE LQH3C100K04 D1: 1N4148 C1, C2: CERAMIC D2, D3: LUMEX SSL-X100133SRC/4 "MEGA-BRITE" RED LED OR PANASONIC LNG992CF9 HIGH BRIGHTNESS BLUE LED 5.5V SHUTDOWN D1: MOTOROLA MBR0520L ...
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LT1307/LT1307B U TYPICAL APPLICATIO S 1.5V PACKAGE DESCRIPTIO DETAIL “A” 0.254 (.010) 0 – 6 TYP GAUGE PLANE DETAIL “A” 0.18 (.077) NOTE: 1. DIMENSIONS IN MILLIMETER/(INCH) 2. DRAWING NOT TO SCALE 3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) 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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... Regulated Charge Pump LTC3400 600mA, 1.2MHz, Synchronous Boost Converter LTC3401 1A, 3MHz, Synchronous Boost Converter LTC3402 2A, 3MHz, Synchronous Boost Converter ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 20 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 LCD Bias Generator D1 ...