LTM8002 Spread Spectrum
Hello, I'm interested in using LTM8002 in my design and wanted to use the spread spectrum option.Can I connect the Sync pin to Vout pin (via some voltage divider) or I must use external source for this...
View ArticleLTC7130 Qt and Qb not specified in datasheet
the LTC7130 datasheet (LTC7130fb.pdf) has a chapter "efficiency considerations". In this chapter (page 27) some remarks about switching losses are made, including the formula Igatechg = f(Qt+Qb), where...
View ArticleADP7182 Noise reduction question in datasheet
Hello all, first time poster here, so I am not sure if this ends in the right forum: I am working with some poer regulators: LDO type, positive and negative: ADP7118 and ADP7182 in SOT23-5 Package,...
View ArticleLTC4121EUD charge when Vin
Only at an input voltage >12V PWM occurs and the charging current appears (0.14A input current). Otherwise, there are no signals. The charge status and error are read at <12 volts as well as at...
View ArticleLT3795 SIMULATION ISSUE
Hi everyone: Related with the LT3795 Demo Circuit on your website. I running the simulation with original input voltaje and everything is OK. The situation is when I change the input voltaje to 45 Vdc...
View ArticleClik here to view.
Three LTM8056s parallel operation
Hello Our customer would like to use three LTM8056s parallel operation for needed power.The datasheet and evaluation board manual describe two LTM8056s example. Can we use three parallel operation of...
View ArticlePin(pad) material of LTM4605
Hello, I've received a question form our customer. The customer would like to know material of Pin (pad) of LTM4605. We can get attached TABLE OF MATERIAL DECLARATION in ADI WEB site. But I'm not sure...
View ArticleBooster Regulator request(Battery voltage is applied)
Dear Team,Our customer is looking for a boost requlator.We would like to get the recommed parts. Request condisionsInput Voltage: +2.5~+4.5V (Battery voltage)Output+12V (Isolation has to be applied....
View ArticlePMIC Evaluation board
Hi, we are interested in a charger evaluation board which includes PowerPath, termination voltage (or current) when the battery is either charged or discharged, protection circuit, etc and any kind of...
View ArticleLTC4121can't work if the input voltage under 15V
LTC4121can't work if the input voltage under 15V.The design is according to the datasheet of LTC4121.But it works only the input is above 15V.It can't work if input under 15V(for example 9V in the...
View ArticleClik here to view.
Beware of ADM861x!! This """"watchdog"""" is worse than nothing!
I found that once in a few dozens of powerups ADM8613 locks in some dead state:RESET stuck low forever, no matter that VCC is OK and stable.Moreover, MR, which is input at all, stuck low as well!!!In...
View ArticleClik here to view.
Are there models of ADP1074 and ADP1071-2 for LTSPICE available?
Are these models available? If not what would be the closest part that I can use? Also do you have any suggested reading on synchronous flyback vs synchronous forward (with active clamp) topologies?...
View ArticleADP 5090 startup
Hi fellow peers, I recently purchased an EVAL-ADP 5090 charge pump to be used in my final year project.Based on the user guide provided, i connected approximately 450 mV to Vin at pin J6 and has a 2300...
View ArticleHMC477 and HMC733 library
Can please provide HMC477 and HMC733 library.I will use them to simulation PLL+VCO by ADIsimPLL.
View ArticleSolar Panel Optimisation Circuit for Shaded Environment
Hi,I am making a SLA Battery Charging circuit that is going to be powered by the solar panels. There are going to be 3 of them in total each 10W 12V rated. The main issue is that each of them is going...
View ArticleLT3758 in Flyback with optoisolator feedback for 24V and 4A
Hi Dear, I want to use LT3758 in Flyback with optoisolator feedback for 24V and 4A output with 18V to 36V input. I am not a power engineer, can you please provide some suggestions regarding the...
View ArticleClik here to view.
LTC7001 - Bootstrapped Supply
Hi,According to the datasheet , page9.I think there is a small error in th formula how to find Cb: 12V will be in place of 1V, because the applied voltage in Cb is 12V (VBST = VTS + 12)Thanks
View ArticleLTC4060 charging 2 NiMH from usb
Hi trying to design a handheld device powered by 2 NiMH cells in series. And USB is required to charge the 2 NiMH cells when connected.Is the LTC4060 the best option?And I’m most likely will not put a...
View ArticleLTM8048 as isolated gate driver supply
I would like to use an LTM8048 (actually, two of them in series) as a power supply for an isolated gate driver. I didn't find any data on the datasheet regarding input-output parasitic capacitance or...
View ArticleLT8471 VIN Voltage
Hi,My customers are considering LT 8471.So I got a question. In the data sheet, it is described as follows."When either channel is configured as a buck, ZETA or single-inductor inverting converter, the...
View Article