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generating VIN for LTC4269-2
Hi,In the schematics of the "typical application" of LTC4269-2 the chip's supply voltage VIN rail is charged through a 33k resistor (the only source when not switching). Is that done just because...
View Article3 Phase 750Hz Synchronous rectification
Hi I have a DC2465A Demo board and i changed the Linear IC's from LT4320 to LT4320-1.The Datasheet says with proper choice of MOSFET's this Demo board could operate at more than 600Hz. Could anyone...
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LT4356 Inrush current issue with LTC4015
Dear Team, We have developed power management board with the reference of LTC4015 demo board. In our board the LTC4015 is getting burnt due to the inrush current when we power on the battery (Li-Ion...
View ArticleLTC4417 Power Path Controller PMOSFET Selection
Hello,I want to use the LTC4417 Power Path Controller in my next design.The maximum current that flows through the PMOSFET will be up to 8A. I'm looking for a PMOSFET device with an small RDS(On) to...
View ArticleIdeal diode load switch turn-on speed?
Hi, I am planning to use an ideal diode to reduce power dissipation, while having the ability to turn on/off the ideal diode, as a kind of load-switch. The input voltage is somewhat lower(lets say 5%...
View ArticleQuestion about LTC7000-1
Hi All, Would you let me know where SNS+, SNS- and TIMER pins to be connected to in case the overcurrent protection is not needed? Leave all three pins open is OK? Regards,Kazu
View ArticleLTM8067 RFB Configuration
Hi,My customers are considering LTM 8067. Since it is used with 5 V output, I found RFB in Table 1, 8.25 kΩ.However, if 8.25 kΩ is inserted into the formula for RFB of Datasheet P.8, Vout = 4.87 V. For...
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What is the max resistance for MPPC pin in LTC3105?
I'm using LTC3105 as a trickle charger for a Li-Po battery as shown in the first page of the datasheet, but with a 1W, 5V rated PV panel instead of a single cell one. I'm using a 390k resistor in the...
View ArticleLTC7000 damaged with 6.8mF output capacitor
Hi I am using LTC7000 as high side switch with Dual NFETs. The schematic is attached here. The part number for M1 and M2 are IPB015N08N5ATMA1 but not the components shown in the schematic.The I1 load...
View ArticleWhy the coil get so hot?
Hello, We have designed a board based upon an LT3795 application note.We are using the circuit to boost to 54 Volts from 24V. I am getting a relatively high ripple (0.5V). The surrounding of the coil...
View ArticleADM7170 - Vout 1.2 V
Hi, I'm planning to use the ADM7170 as 1.2 V voltage source. According to the datasheet ordering guide table (page 23/23), the adjustable models (ADM7170ACPZ-R7 & ADM7170ACPZ-R2) are listed with an...
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Is the firmware for the DC2039a demo board available?
Hi All - Is the firmware for the PIC16F1459 that handles communications between the LTC4015 and QuickEval PC software available? I can't find it anywhere and assume it hasn't been published, yet, but...
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LT8640 VIN C Change
I don't get 1 μF of bypass capacitor.Therefore I think we'll set a bypass capacitor of VIN1,2 to 2.2 μF.Would there be an anxious point?Can I have advice?
View ArticleLTC4364
Hi,I want to add a resistor (e.g. 1k) between Current_Shunt and Sens-Pin, and a Resistor (e.g. 220K) from Vin to Sens-Pin.A higher Input/output Voltage difference should then result in a lower current...
View ArticleLTC4071 - VCC drooping to 0V after disconnecting Solar Panel
Hello, I am using LTC4071 to charge LiPo (3.7 1200ma) from Solar Panel. I have a custom made PCB for this. The connection on PCB is as follows:NTCBAIS - FloatingNTC - connected to VCCADJ -...
View ArticleLTM4644 overcurrent protection
Can someone give me more detailed description of LTM4644 overcurrent protection function? How does it work? (working theory)Overcurrent threshold?Response time (turn-off time)Recovery time (turn-on...
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Is there an LTSpice model for LT4295?
I wanted to do LTSpice simulations on a POE design and can't find a model for LT4925. Is one going to be available soon?
View ArticleLT3045 PSRR vs voltage drop
Dear Support,is it known how PSRR of LT3045 depends on difference VIN-VOUT?I plan to use it to produce voltage a bit below 3.0V from 3.3V rail. The datasheet specifies max. dropout voltage as 350mV, so...
View ArticleBoard Settings for ADP1046A
I received 100W (ADP1046A-100-EVALZ) EVM board from the local distributor and started powering the board. I have change the output current parameters to 5A instead of 8A and corresponding light loads...
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date code for LTC3406BES5-1.2#TRMPBF
please decode the date code for the following partLTC3406BES5-1.2#TRMPBF
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