LTC3407-2 Linear Technology, LTC3407-2 Datasheet
LTC3407-2
Related parts for LTC3407-2
LTC3407-2 Summary of contents
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... AT 800mA C4, 22pF V FB1 R2 GND C2 R1 604k 10µF 301k L1, L2: MURATA LQH32CN2R2M33 3407 TA01 FOR V ≤ 2. LTC3407-2 www.DataSheet4U.com 2.25MHz Step-Down DC/DC Regulator U LTC3407-2 Efficiency Curve 100 95 2. Burst Mode OPERATION NO LOAD ON OTHER CHANNEL 100 LOAD CURRENT (mA) 3407 TA02 ...
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... Ambient Operating Temperature Range (Note 2) ................................... – 40°C to 85°C Junction Temperature (Note 5) ............................. 125°C + 0.3V IN Storage Temperature Range ................. – 65°C to 125°C + 0.3V IN Lead Temperature (Soldering, 10 sec) + 0.3V IN LTC3407-2EMSE only ...................................... 300°C Reflow Peak Body Temperature ............................ 260° ORDER PART NUMBER V 1 FB1 RUN1 2 ...
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... Note 2: The LTC3407-2E is guaranteed to meet specified performance from 0°C to 70°C. Specifications over the – 40°C and 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: The LTC3407-2 is tested in a proprietary test mode that connects W U TYPICAL PERFOR A CE CHARACTERISTICS ...
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... LTC3407 TYPICAL PERFOR A CE CHARACTERISTICS Reference Voltage vs Temperature 0.615 V = 3.6V IN 0.610 0.605 0.600 0.595 0.590 0.585 –50 – 100 125 TEMPERATURE (°C) 3407 G07 Efficiency vs Load Current 100 2.7V 95 3. 2.5V OUT Burst Mode OPERATION 65 NO LOAD ON OTHER CHANNEL ...
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... Nominal voltage for this pin is 0.6V. or GND, Burst Mode Exposed Pad (GND) (Pin 11): Power Ground. Connect to the (–) terminal of C connected to electrical ground on PCB. LTC3407-2 www.DataSheet4U.com to GND and (–) terminal Must be ...
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... V 10 FB2 U OPERATIO The LTC3407-2 uses a constant frequency, current mode architecture. The operating frequency is set at 2.25MHz and can be synchronized to an external oscillator. Both channels share the same clock and run in-phase. To suit a variety of applications, the selectable Mode pin allows the user to choose between low noise and high efficiency. ...
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... An important design consideration is that the R the P-channel switch increases with decreasing input supply voltage (See Typical Performance Characteristics). Therefore, the user should calculate the power dissipation when the LTC3407-2 is used at 100% duty cycle with low input voltage (See Thermal Considerations in the Applica- is below TH tions Information Section) ...
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... The choice of which style inductor to use often depends more on the price vs size requirements and any radiated field/EMI require- ments than on what the LTC3407-2 requires to operate. Table 1 shows some typical surface mount inductors that work well in LTC3407-2 applications. Input Capacitor (C ...
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... In addition, the high Q of ceramic capacitors along with trace inductance can lead to significant ringing. In most cases, 0.1µF to 1µF of ceramic capacitors should also be placed close to the LTC3407-2 in parallel with the main capacitors for high frequency decoupling 2. ...
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... Connecting this pin to ground selects pulse skipping mode, which provides the lowest output ripple, at the cost of low current efficiency. The LTC3407-2 can also be synchronized to an external 2.25MHz clock signal by the MODE/SYNC pin. During synchronization, the mode is set to pulse skipping and the top switch turn-on is synchronized to the rising edge of the external clock ...
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... L The junction temperature RISE As an example, consider the case when the LTC3407 dropout on both channels at an input voltage of 2.7V with a load current of 800mA and an ambient temperature )(1 – DC) of 70°C. From the Typical Performance Characteristics graph of Switch Resistance, the R main switch is 0.425Ω. Therefore, power dissipated by ...
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... J which is below the absolute maximum junction tempera- ture of 125°C. Design Example As a design example, consider using the LTC3407 portable application with a Li-Ion battery. The battery provides 2.8V to 4.2V. The load requires a maxi- IN mum of 800mA in active mode and 2mA in standby mode. ...
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... L1, L2: SUMIDA CDRH2D18/HP-4R7NC Efficiency vs Load Current 100 3.3V IN PULSE SKIP MODE 55 NO LOAD ON OTHER CHANNEL 50 10 100 1000 LOAD CURRENT (mA) 3407 TA03b LTC3407-2 www.DataSheet4U.com R5 100k POWER-ON RESET V = 1.2V OUT1 AT 800mA C4, 22pF 604k 10µF 604k 3407 TA03 sn34072 34072fs 13 ...
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... C3 4.7µF ×2 C1, C2, C3: TDK C1608X5ROJ475M L1, L2: CMD4D11-2R2 * GREATER THAN 3" FROM POWER SOURCE, ADDITIONAL CAPACITANCE MAY BE REQUIRED. 14 2mm Height Core Supply C1* 4.7µF RUN2 V RUN1 IN MODE/SYNC POR LTC3407 2.2µH 2.2µH SW2 SW1 C5, 22pF V V FB1 FB2 R4 GND R3 887k 196k Efficiency vs Load Current ...
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... TYP GAUGE PLANE 0.53 ± 0.152 (.021 ± .006) DETAIL “A” 0.18 (.007) SEATING PLANE 0.17 – 0.27 (.007 – .011) TYP LTC3407-2 www.DataSheet4U.com R = 0.115 0.38 ± 0.10 TYP 6 10 3.00 ±0.10 1.65 ± 0.10 (4 SIDES) (2 SIDES) (DD10) DFN 0403 5 1 0.25 ± 0.05 0.75 ± ...
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... Synchronous Buck-Boost DC/DC Converter Linear Technology Corporation 16 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● 2. 4.2V C1 10µF RUN2 V RUN1 IN MODE/SYNC POR LTC3407 10µH SW2 SW1 C5, 22pF FB2 R4 GND C3 R3 887k 10µF 196k C1, C2, C3: TAIYO YUDEN JMK316BJ106ML ...