LTC1530 LINER [Linear Technology], LTC1530 Datasheet
LTC1530
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LTC1530 Summary of contents
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... Shutdown mode drops the LTC1530 supply cur- rent ® The LTC1530 is specified for commercial and industrial -2, SPARC, temperature ranges and is available in the S0-8 package. , LTC and LT are registered trademarks of Linear Technology Corporation. Pentium is a registered trademark of Intel Corp. ...
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... MAX I Input Current (Notes 2,3) ............................ – 100mA FB Operating Ambient Temperature Range LTC1530C ............................................... LTC1530I ............................................ – Maximum Junction Temperature LTC1530C, LTC1530I ...................................... 125 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C ELECTRICAL CHARACTERISTICS range, otherwise specifications are ...
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... CC Note 3: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to ground unless otherwise specified. Note 4: The LTC1530 is tested amp feedback loop which regulates based for the error amplifier. ...
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... TEMPERATURE ( C) Undervoltage Lockout Threshold Voltage vs Temperature 4.5 4.3 4.1 3.9 3.7 3.5 3.3 3.1 2.9 2.7 2.5 2.3 –55 –35 – 105 TEMPERATURE ( C) LTC1530 V vs Temperature SENSE 1.260 1.255 1.250 1.245 1.240 1.235 1.230 1.225 1.220 1.215 1.210 5 6 –35 – – TEMPERATURE ( C) 1530 G02 LTC1530-2 Temperature OUT 2 ...
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... C A 2.0 REFER TO FIGURE 2 1.5 1.0 SHORT-CIRCUIT CURRENT 0 OUTPUT CURRENT (A) 1530 G17 LTC1530 Maximum G1 Duty Cycle vs Ambient Temperature 12V 300kHz 90 OSC G1 CAPACITANCE = 1000pF 2200pF 86 84 3300pF 5500pF 82 7700pF 80 THERMAL SHUTDOWN OCCURS BEYOND THESE POINTS 78 – ...
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... V /V (Pin 3): Feedback Voltage Pin. For the adjust- SENSE OUT able LTC1530, use an external resistor divider to set the required output voltage. Connect the tap point of the resistor divider network to V SENSE divider network to the output voltage. For fixed output voltage versions of the LTC1530, the resistor divider is ...
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... V /2 REF REF V – 3% REF V LVC REF REF – REF PV CC 12V + COMP COMP OUT 2.5V LTC1530 6A V SENSE 1530 F02 GND Figure 43.2k 43.2k 43.2k 40.8k SENSE OUT 1530 MAX OUT 1530 F03 ...
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... Thermal Shutdown The LTC1530 has a thermal protection circuit that disables both internal gate drivers if activated. G1 and G2 are held low and the LTC1530 supply current drops to about 1mA COMP t ...
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... C during start-up. This prevents the error SS amplifier from forcing the loop to maximum duty cycle. The LTC1530 operates at low duty cycle as the COMP pin voltage increases above about 2.4V. The slew rate of the soft-start capacitor is typically 0.4V/ms. As the voltage on C continues to increase, M ...
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... Figure 7. The 86% maximum duty cycle ensures sufficient off-time to refresh the charge pump during each cycle powered up from 0V, the LTC1530 undervoltage CC lockout circuit prevents G1 and G2 from pulling high until PV reaches about 3.5V. To prevent Q1’s high R ...
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... F07 the R DS(ON) allowable power dissipation and maximum output cur- rent typical LTC1530 buck converter circuit, operat- ing in continuous mode, the average inductor current is equal to the output load current. This current flows through either with the power dissipation split up accord- ...
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... Note: Please refer to the manufacturer’s data sheet for testing conditions and detailed information. *Users must consider the power dissipation and thermal effects in the LTC1530 if driving external MOSFETs with high values of input capacitance. Refer to the PV Supply Current vs GATE Capacitance in the Typical Performance Characteristics section. ...
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... U U APPLICATIO S I FOR ATIO Inductor Selection The inductor is often the largest component in an LTC1530 design and must be chosen carefully. Choose the inductor value and type based on output slew rate requirements and expected peak current. The required output slew rate primarily controls the inductor value. The maximum rate of rise of inductor current is set by the inductor’ ...
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... ESR to 0.014 . For low cost applica- tions, the Sanyo MV-GX capacitor series can be used with acceptable performance. Feedback Loop Compensation The LTC1530 voltage feedback loop is compensated at the COMP pin, which is the output node of the g amplifier. The feedback loop is generally compensated with network from COMP to GND as shown in Figure 8a ...
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... Z –20dB/DECADE ESR f CO Figure 8b. Bode Plot of the LTC1530 Overall Transfer Function W U tantalum capacitors for the output capacitor. The opti- mum component values might deviate from the suggested values slightly because of board layout and operating condition differences. Table 2. Suggested Compensation Network for a 5V Input Application Using Multiple Paralleled 330 F AVX TPS Output Capacitors for 2 ...
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... APPLICATIO S I FOR ATIO Thermal Considerations Limit the LTC1530’s junction temperature to less than 125 C. The LTC1530’s SO-8 package is rated at 130 C/W and care must be taken to ensure that the worst-case input voltage and gate drive load current requirements do not cause excessive die temperatures. Short-circuit or fault conditions may activate the internal thermal shutdown circuit ...
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... BOLD LINES INDICATE HIGH CURRENT PATHS LTC1530 7 2 GND G2 R IFB OUT R IMAX COMP MAX C 0 Figure 9. LTC1530 Layout Diagram 2.7k 0 Q1* MAX COMP I FB LTC1530 7 R (SEE TABLE) Q2 ...
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... LTC1530 U TYPICAL APPLICATIO (SEE TABLE) * SILICONIX SUD50N03- SANYO 10MV1200GX OR 3 SANYO OS-CON 6SH330K DEVICE LTC1530-3.3 LTC1530-3.3 LTC1530-2.8 LTC1530-2.8 LTC1530-2.5 LTC1530-2.5 LTC1530-1.9 LTC1530-1 Dual Output (3.3V and 12V) Synchronous Buck Converter R1 2. MAX 4 COMP C1 R LTC1530-3.3 C 220pF 4.7k ...
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... U TYPICAL APPLICATIO MBRS120 D1 MBRS120 2. 100pF 13k C C 0.022 F Other Methods to Generate 3. 3.3V 3000pF 33k LTC1530 3.3V to 1.8V, 14A Application – GND LTC1517-5 0. OUT 0 SUD50N03 MAX COMP ...
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... 0.22 F LTC1517-5 FMMT3904 2 4 16V + GND C1 R3 47k 3 V OUT COILCRAFT DO3316P-102 SUMIDA CEE125C-2R1 16V 20 LTC1530 High Efficiency Boost Converter R5 L2 0.005 2 C12 C9 470 360 16V MBRS140T3 + D2 MBR0530T1 IRF7811 MAX ...
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... F 0 LTC1530-ADJ COMP SENSE GND 4.7k 1000pF SANYO 10MV1200GX IN OUT L1 = PANASONIC ETQP6F2R5HA (PCC-N6) Q1,Q2 = SILICONIX SUD50N03-10 LTC1530 5V to – 5V Synchronous Inverter OPTIONAL 560 C6 12V 1/2W 2.2 F ZENER R9 1/2W 680 D2 MBR0530T1 Q3 2N7000 R2 R10 100 330 D4 1N4148 + D5 R11 MBR0530T1 1k ...
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... SHDN LT1317 R6 2. GND C7 R7 3000pF 300k 100pF 33k SANYO 10MV1200GX IN OUT SANYO 16SA150MK FLY L1 = COILTRONIX CTX02-13198-1 (L1A = 1,2,3 7,8,9; L1B = 10,11,12 22 LTC1530 Synchronous SEPIC Converter R SENSE 0.02 L1A • 1,2,3 7,8 N-MOSFET 2. 0 ...
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... TYP 0.014 – 0.019 (0.355 – 0.483) TYP LTC1530 0.150 – 0.157** (3.810 – 3.988 0.004 – 0.010 (0.101 – 0.254) 0.050 (1 ...
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... LTC1530 U TYPICAL APPLICATION LTC1530 – 2.5V, 5A Inverting Polarity Converter (OPTIONAL) Z1 1N4742A + 1500 F 6. COMP LTC1530-ADJ R C 5.6k C1 GND 1000pF 0 – SANYO 6MV1500GX IN OUT L1 = PANASONIC ETQP6F2R5HA PCC-N6 Q1,Q2 = SILICONIX SUD50N03- DALE LVR-1, 1W SENSE RELATED PARTS ...