ltm4602hv Linear Technology Corporation, ltm4602hv Datasheet
ltm4602hv
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ltm4602hv Summary of contents
Page 1
... Included in the package are the switching controller, power FETs, inductor, and all support components. Operating over an input voltage range of 4.5V to 28V, the LTM4602HV supports an output voltage range of 0.6V to 5V, set by a single resistor. This high effi ciency design delivers 6A continuous current (8A peak), needing no heat sinks or airfl ...
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... T = 6°C/W, JMAX JA JC DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS JA WEIGHT = 1.7g LGA PART MARKING* LTM4602HVV LTM4602HVV = 120µ 200µF/Ceramic per typical OUT MIN TYP MAX ● 4 1.478 1.50 1 ...
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... Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTM4602HVE is guaranteed to meet performance specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C ● ...
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... LTM4602HV W U TYPICAL PERFOR A CE CHARACTERISTICS Effi ciency vs Load Current with 5V (FCB = 0) IN 100 0.8V OUT 50 1.2V OUT 1.5V OUT 40 1.8V OUT 2.5V 30 OUT 3.3V OUT 20 *FOR 5V TO 3.3V CONVERSION, SEE FREQUENCY ADJUSTMENT 10 IN APPLICATIONS INFORMATION LOAD CURRENT (A) 4602HV G01 Light Load Effi ciency vs ...
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... OUT 0.5V/DIV I IN 0.5A/DIV 20µs/DIV 4602HV G13 V = 12V 1.5V OUT = 1 × 22µF, 6.3V X5R C OUT 330µF, 4V SANYO POS CAP NO EXTERNAL SOFT-START CAPACITOR LTM4602HV Start-Up OUT (Resistive Load) V OUT 0.5V/DIV I IN 0.5A/DIV 4602HV G11 500µs/DIV V = 12V 1.5V OUT = 1 × ...
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... A15): A 110k resistor from V ADJ the one-shot timer current, thereby setting the switching frequency. The LTM4602HV switching frequency is typically 850kHz. An external resistor to ground can be selected to reduce the one-shot timer current, thus lower the switching frequency to accommodate a higher duty cycle step down requirement ...
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... OUT (V = 4.5V to 28V OUT 1000pF CONTROLLER 110k Q2 Figure 1. Simplifi ed LTM4602HV Block Diagram 25° 12V. Use Figure 1 confi guration CONDITIONS I = 6A, 2x 10µF 35V Ceramic OUT = 2.5V) Taiyo Yuden GDK316BJ106ML I = 6A, Refer to Table 2 in the OUT = 2 ...
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... Current mode control provides cycle-by-cycle fast current limit. In addition, foldback current limiting is provided in an over-current condition while V LTM4602HV has defeatable short circuit latch off. Internal overvoltage and undervoltage comparators pull the open- drain PGOOD output low if the output feedback voltage exits a ± ...
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... SGND SET OSET R SET Input Capacitors The LTM4602HV µModule should be connected to a low resistor ac-impedance DC source. High frequency, low ESR input SET capacitors are required to be placed adjacent to the mod- ule. In Figure 20, the bulk input capacitor C for its ability to handle the large RMS current into the 31 ...
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... W U Soft-Start and Latchoff with the RUN/SS pin The RUN/SS pin provides a means to shut down the LTM4602HV as well as a timer for soft-start and over- current latchoff. Pulling the RUN/SS pin below 0.8V puts the LTM4602HV into a low quiescent current shutdown (I ≤ 75µA). Releasing the pin allows an internal 1.2µA ...
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... NONE 220pF 12 330µF 6.3V NONE 220pF 12 NONE NONE 220pF 12 NONE NONE 100pF 15 NONE NONE 100pF 20 LTM4602HV PART NUMBER 6TPE330MIL (330µF, 6.3V) 2R5TPE470M9 (470µF, 2.5V) 4TPE470MCL (470µF, 4V) DROOP PEAK TO PEAK RECOVERY TIME (mV) (mV) (µ ...
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... RUN V RUN/ SHORT-CIRCUIT LATCH ARMED SOFT-START SHORT-CIRCUIT OUTPUT CLAMPING LATCHOFF OVERLOAD RELEASED L HAPPENS 500k LTM4602HV RUN/SS PGND SGND RECOMMENDED VALUES FOR R RUN/ RUN/SS 4.5V TO 5.5V 50k 10.8V TO 13.8V 150k 24V TO 28V 500k 4602HV F04 IN 3. 4602HV F03 4602hvf ...
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... U U APPLICATIO S I FOR ATIO Enable The RUN/SS pin can be driven from logic as shown in Figure 5. This function allows the LTM4602HV to be turned on or off remotely. The ON signal can also control the sequence of the output voltage. RUN/SS LTM4602HV ON PGND 2N7002 4602HV Figure 5. Enable Circuit with External Logic ...
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... The penalty is that the controller may skip cycle and the output voltage ripple increases at light load. Paralleling Operation with Load Sharing Two or more LTM4602HV modules can be paralleled to provide higher than 6A output current. Figure 7 shows the necessary interconnection between two paralleled modules. The OPTI-LOOP™ current mode control en- sures good current sharing among modules to balance the thermal stress ...
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... Figure 12. 12V to 1.5V, BGA Heatsink 0LFM 1 200LFM 400LFM TEMPERATURE (°C) 4602HV F15 Figure 15 3.3V, BGA Heatsink LTM4602HV 100 TEMPERATURE (°C) Figure 10 1.5V, BGA Heatsink 4 3.3V LOSS 12V TO 3.3V LOSS 3.5 12V TO 3.3V (950kHz) LOSS 3 ...
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... Connect the SGND to PGND underneath the unit Figure 20 gives a good example of the recommended layout. LTM4602 Frequency Adjustment The LTM4602HV is designed to typically operate at 850kHz across most input and output conditions. The control ar- pins to minimize OUT chitecture is constant on time valley mode current control. ...
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... 1µs – 410ns ≅ 590ns DC t OFF and t ON band. LTM4602HV ) on time of 100 nanosec off time of 400 nanoseconds. OFF /2.4V for 3.3V and 5V outputs. This is due to OUT OUT ) When the switching frequency ON pin to ground can shunt current away from ADJ = 5V OUT – ...
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... V 4. 10µF 10µF 25V 25V RUN/SOFT-START WITH f LTM4602HV MINIMUM ON-TIME = 100ns LTM4602HV MINIMUM OFF-TIME = 400ns Using the frequency = (I = (450kHz • 2.4V • 10pF) • (1/0.66) ≅ 16µA. I current for current calculated from 5V input was 39µ resistor ...
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... U U APPLICATIO S I FOR ATIO 16V C3 C1 10µF 10µF 25V 25V RUN/SOFT-START 12V WITH f LTM4602HV MINIMUM ON-TIME = 100ns LTM4602HV MINIMUM OFF-TIME = 400ns 150µ 24V BULK GND C3 100pF V OUT R SET 66.5k REFER TO TABLE 1 Figure 22. Typical Application 24V Input, 0. Output, 6A Max ...
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... FCB V OSET LTM4602HV R1 RUN SV IN 100k COMP PGOOD SGND PGND C3, C8: TAIYO YUDEN, GDK316BJ106ML 4602HV TA02 C2, C9: TAIYO YUDEN, JMK316BJ226ML-T501 C5, C10: SANYO POS CAP, 4TPE330MI Current Sharing Between Two LTM4602HV Modules 6 12V IN 2.5V OUT 12A MAX 4 I OUT2 I OUT1 TOTAL LOAD ...
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... PACKAGE DESCRIPTIO 6.9865 5.7142 4.4442 3.1742 1.9042 0.6342 0.0000 0.6358 1.9058 3.1758 4.4458 5.7158 6.9421 bbb 6.3500 5.0800 3.8100 2.5400 1.2700 0.3175 0.0000 0.3175 1.2700 2.5400 3.8100 5.0800 6.3500 LTM4602HV 4602hvf 21 ...
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... LTM4602HV PACKAGE DESCRIPTIO PIN NAME PIN NAME A10 - B10 - A11 V B11 - IN A12 - B12 - A13 V B13 - IN A14 - B14 - A15 f B15 - ADJ A16 - B16 - A17 SV B17 - IN A18 - B18 - A19 EXTV ...
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... T4 V OUT T6 V OUT T8 V OUT T10 V OUT T12 V OUT T14 V OUT T16 V OUT T18 V OUT T20 V OUT T22 V OUT LTM4602HV PIN NAME V A15 f IN ADJ V IN A17 A19 EXTV A21 V OSET V IN B23 COMP V IN D23 ...
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... FAX: (408) 434-0507 1.8V, 5A Regulator C5 100pF OUT IN ADJ 1. OUT V OSET R1 LTM4602HV 100k SV IN PGOOD R SET SGND PGND C1: TAIYO YUDEN, GMK316BJ106ML 49.9k C3: TAIYO YUDEN, JMK316BJ226ML-T501 4602HV TA04 1% C4: SANYO POS CAP, 4TPE330MI COMMENTS Monitors Four Supplies; Adjustable Reset Timer Tracks Both Up and Down; Power Supply Sequencing No Optocoupler Required ...