LT1304-5 LINER [Linear Technology], LT1304-5 Datasheet
LT1304-5
Related parts for LT1304-5
LT1304-5 Summary of contents
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... DC/DC converter ideal for use in small, low voltage, battery-operated sys- tems. The devices operate from a wide input supply range of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V. Quiescent current, 120 A in active mode, decreases to just shutdown with the low-battery detector still active ...
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... LT1304/LT1304-3.3/LT1304 ABSOLUTE MAXIMUM V Voltage ................................................................ Voltage ............................................... – 0.4V to 25V FB Voltage (LT1304) ...................................... V Sense Voltage (LT1304-3.3/LT1304-5) ..................... 8V I Voltage .............................................................. 5V LIM SHDN Voltage ............................................................ 6V LBI Voltage ............................................................... V LBO Voltage ............................................................... 8V Maximum Power Dissipation ............................. 500mW Junction Temperature.......................................... 125 C Operating Temperature Range ..................... Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec) ...
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... G01 Feedback Voltage 1.250 1.245 1.240 1.235 1.230 1.225 1.220 1.215 1.210 1.205 1.200 –50 – TEMPERATURE ( C) 1304 G04 LT1304/LT1304-3.3/LT1304 2V unless otherwise noted. IN SHDN CONDITIONS 700mA SW Switch Off Peak Switch Current Limit 1.3 1.2 1.1 1.0 ...
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... LT1304/LT1304-3.3/LT1304 TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response V OUT 100mV/DIV AC COUPLED I LOAD 200mA 0 100 s/DIV PIN FUNCTIONS LBI (Pin 1): Low-Battery Detector Input. When voltage on this pin is less than 1.17V, detector output is low. LBO (Pin 2): Low-Battery Detector Output. Open collector can sink up to 500 A ...
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... R3 FB – 1.24V V REF Figure 1. LT1304 Block Diagram. Independent Low-Battery Detector A3 Remains Alive When Device Is in Shutdown LBI 1 SENSE 8 590k 355k (LT1304-3.3), 195k (LT1304-5) LT1304/LT1304-3.3/LT1304 LB0 2 1.5V UNDERVOLTAGE LOCKOUT 36mV + A2 – A3 BIAS Q3 ~1V OFF TIMERS ...
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... LT1304/LT1304-3.3/LT1304-5 U OPERATIO The LT1304’s operation can best be understood by exam- ining the block diagram in Figure 1. Comparator A1 monitors the output voltage via resistor divider string R3/R4 at the FB pin. When V is higher than the 1.24V FB reference, A2 and the timers are turned off. Only the reference, A1 and A3 consume current, typically 120 A ...
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... External Parts. Components with Dashed Lines Are for Soft Start (Optional) ) pin can be used for soft LIM and V waveforms as the OUT IN pin will eventually charge C1 and LIM 1ms/DIV 1304 F03 MBRS130L LBI SENSE 200mA LT1304-5 LB0 SHDN + I GND LIM R1 100 SHUTDOWN 1304 F04 7 ...
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... LT1304/LT1304-3.3/LT1304-5 U OPERATIO If the full power capability of the LT1304 is not required, peak switch current can be limited by connecting a resistor R from the I pin to ground. With R LIM LIM switch current is reduced to approximately 500mA. Smaller power components can then be used. The graph in Figure 6 shows switch current vs R resistor value ...
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... LIM EVEREADY INDUSTRIAL ALKALINE AA CELLS #EN91 C1 AVX TPSD107M010R0100 D1 = MOTOROLA MBRS130L L1 = SUMIDA CD54-220 Figure 9. 2-Cell to 5V Converter Used in Battery Life Study LT1304/LT1304-3.3/LT1304-5 1000 100 10 1304 F08 Figure 10. Battery Life vs Load Current. Dots Specify Actual Measurements Figure 11. Output Watt Hours vs Load Current. Note ...
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... LT1304/LT1304-3.3/LT1304-5 U OPERATIO Figure 12 shows overall energy conversion efficiency, assuming availability of 6.5WH of battery energy. This efficiency approximates the electrical efficiency at load current levels from 1mA to 10mA, but drops severely at load currents above 10mA (load power above 50mW). The moral of the story is this: if your system needs 5V at more ...
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... † 16V LT1304-5 SENSE SHDN SHUTDOWN I LIM GND NC *COILTRONICS CTX20-1 **TOKIN 1E105ZY5U-C103-F † AVX TPSD476M016R0150 †† AVX TPSD107M010R0100 LT1304/LT1304-3.3/LT1304-5 MBRS130L SW 3.3V SENSE 300mA + C2** GND 100 F 10V 1304 TA05 C1 L1B* MBRS130L 3 3.3V 300mA †† 100 F ...
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... LT1304/LT1304-3.3/LT1304-5 U TYPICAL APPLICATIONS 5V to 12V DC/DC Converter L1 F** LT1304 SHDN FB SHUTDOWN GND *SUMIDA CD54-220 **AVX TPSD476M016R0150 † MOTOROLA MBRS130L Single Li-Ion Cell to 5V Converter with Load Disconnect at V (2.7V to 4.2V) + 100 F 562k 220k 16V 1% NC SINGLE Li-Ion CELL* 432k 1% *PRIMARY Li-Ion BATTERY PROTECTION MUST BE ...
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... U TYPICAL APPLICATIONS + 2 CELLS SUMIDA CD43-100 ** MOTOROLA MBR0530 OPERATE 0V = SHUTDOWN 22k 2N3906 75k 3.3k * DALE LPE3325-A205 TRANSFORMER MEASURES 6.5mm 8.2mm 5.2mm (H) (605) 665-9301 LT1304/LT1304-3.3/LT1304-5 Negative LCD Bias Generator L1 1.69M LT1304 1M 1% 90.9k 110k LIM GND + 3.3 F 22k ...
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... GND * DALE LPE3325-A205 TRANSFORMER MEASURES 6.5mm 8.2mm 5.2mm (H) (605) 665-9301 ** IRC CGX-1/2 ALL 0.01 F CAPACITORS 250WVDC BAS21 OR MUR130 2- to 4-Cell to 5V Converter with Output Disconnect 2k L1** MBRS130L SENSE LT1304-5 + SHDN GND LIM SHUTDOWN NC 0.01 F 0. OUT 1kV 250 ...
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... L1* MBRS130L SENSE LT1304-5 100 F SHDN I GND LIM SHUTDOWN NC 2-Cell to 5V Converter with Auxiliary – 5V Output L1 SENSE 1 F LT1304-5 100 F CERAMIC SHDN I GND LIM MBR0530 SHUTDOWN NC MBR0530 10V 20mA + 10 F MBR0530 5V 150mA + 100 F 1304 TA18 MBRS130L 5V 150mA ...
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... LT1304/LT1304-3.3/LT1304-5 PACKAGE DESCRIPTION 0.010 – 0.020 45 (0.254 – 0.508) 0.008 – 0.010 (0.203 – 0.254) 0.016 – 0.050 0.406 – 1.270 * DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE ** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" ...