TPS7A4700 Ultralow-noise LDO regulators PCB, 5/3PINs with Enable and Feedback inputs

[calderes]

Just ordered your 5V LT3045 from ebay (your ldovr.com site looks very nice though)

Looking forward to receiving! Thanks!

 

[TNT]

Order 2 variable LY3045 on ebay 🙂

//

 

[oxothuk]

LT3045 Boards restocked (and relisted on Ebay)

Visit ldovr.com for better pricing (specially for combined shipments)

 

[Eldam]

Hi Alexey,

I received the LT30xx boards yesterday.

Very good quality 🙂.

Thank you again.

Eldam

 

[oxothuk]

Redesigned Power Supply PCB

Redesigned Power Supply Main PCB v2.0 released

Different options for Power Supply inputs and outputs
- AC input
- DC input (bypassing rectifier)
- 2 wire load connection (if external feedback not used you can install 2Pin Power Screw Terminal Connector
- 3 wire load connections with external feedback

Can be used with TPS7A4700-78XX 5PIN reg board or LT3045-78XX 3PIN Regulator Board (for LT3045 boards - no ON/OFF and external feedback functionality)

 

[oxothuk]

Dual Polarity Power Supply re-stocked @ www.ldovr.com and Ebay

redesigned Power Supply Board
including
- AC input
- DC input (bypassing rectifier)
- 2 wire load connection - if external feedback not used you can install 2Pin Power Screw Terminal Connector
- 3 wire load connections with external feedback

 

[oxothuk]

LT3045-A

Dual LT3045 Board released

0-15V@1A Out
30x35mm

Ebay Store

 

[oxothuk]

LDOVR.COM PROMO

PLACE YOUR ORDER BEFORE SEPTEMBER 18 AND RECEIVE A 12.5% DISCOUNT

Use Coupon Code 'SHIPBYENDOFSEP'

 

[Bob Schneider]

LDOVR.COM PROMO

PLACE YOUR ORDER BEFORE SEPTEMBER 18 AND RECEIVE A 12.5% DISCOUNT

Use Coupon Code 'SHIPBYENDOFSEP'

I just tried that coupon code, and it says it expired Aug 18th.

 

[wealas]

Also, everything is marked as out of stock.

 

[Bob Schneider]

I just tried that coupon code, and it says it expired Aug 18th.

Coupon code now working, although parts still listed as "out of stock"

 

[oxothuk]

Mezzanine Power board for Raspberry Pi

New power board for Raspberry PI under test
More details here

 

[oxothuk]

Recent revision of dual-LT3045 (1A) board can be easily paralleled to get more current (2A, 3A etc)

 

[misterdog]

Hi Alexey, I have one of your power supply boards which I am very pleased with.

I am in the market for one of your negative rail TPS 7A 3301 LDO's, do you know when they will be back in stock ?

 

[CKL]

Recent revision of dual-LT3045 (1A) board can be easily paralleled to get more current (2A, 3A etc)

Two questions:
1) what is the purpose of the jumper EN?
2) what is the purpose of the green line joining two boards?

Thanks!

 

[Simon1972]

I beleive the En jumper and the solder pad enable you to use the regulator without feedback from the load- Kelvin sense. I use mine with the jumper.

The green line lets you link two boards and common the output of both for current sharing duties.

I have one, it works well on modest current's but I need a solution for heatsinking it at 12v/12.2v and 1 amp. Think i'm going to use a heat spreader on the underside.

 

[lasercut]

is it necessary to heatsink the dual Lt3045 for higher loads, is it even possible with this board? anyone try?

 

[oxothuk]

2 new boards released

LT3045-1A5IO (32.5mm x 60mm)
3 x LT3045 Board, 0-15V, 1.5A
2 x setting resistors (can change output by soldering one of two setting pad)
LCLCL Input Filter
5.5mm x 2.1mm DC Input and Output Connector
On/Off Switch
Power LED
Current Limiter circuit for Power Led (Led Brightness does not depend on Input voltage)

LT3045-1A5 (23.5mm x 60mm)
3 x LT3045 Board, 0-15V , 1.5A
2 x setting resistors (can change output by soldering one of two setting pad)
Enable Input for external On/Off Switch (can be permanently enabled)
Matting with LT3045-1A5IO board layout for easy interconnection (serial connection)

2 boards can be paralleled


Heatsink chassis coming soon

PM for more details

 

[Simon1972]

is it necessary to heatsink the dual Lt3045 for higher loads, is it even possible with this board? anyone try?

Very necessary, mine craps out after 30 seconds at 12v 800mA with .2v drop.

These cases look good, I'm in.

 

[oxothuk]

Very necessary, mine craps out after 30 seconds at 12v 800mA with .2v drop.

These cases look good, I'm in.

are you talking about LT3045A board?
Should work (can work with upto 2W dissipated power with ambient temp 25C)
0.2V drop not enough for LT3045