Author Topic: Review. Fasttech 1-4.2 volt single mode driver.  (Read 2184 times)

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Offline MRsDNF

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Review. Fasttech 1-4.2 volt single mode driver.
« on: August 07, 2013, 10:18:21 PM »

Mode

Battery Current Draw Amps

LED Amps

LED Voltage

Sanyo 18650 at 4 volts

High

1.75

1.45

3.05

Ultracell LiFEPo4 at 3.5 volts

High

1.27

.91

2.94

Eneloop LSD AA at 1.4 volts

High

1.7

.23

2.74

 

 

This driver was purchased from Fasttech. Link below.

https://www.fasttech.com/products/1143101

Specifications from Fasttech website.

Specifications

PERIPHERAL TYPE             Flashlight Driver

Electronic Components

CONSTANT CURRENT     No

DRIVER TYPE      Boost driver

INPUT VOLTAGE               1-4.2 -volt

OUTPUT CURRENT          1000 mA

PCB HEIGHT (W/O COMPONENTS)           1.8 mm

REVERSE POLARITY PROTECTION              No

Flashlights

MODE COUNT   1

Package

PACKAGE TYPE  OEM

Dimensions us | metric

DEPTH   8 mm

HEIGHT 17 mm

WIDTH  170 mm

DIAMETER           17 mm

PRODUCT WEIGHT          2.0 g

Product Numbers

FASTTECH SKU  1143101

Details:

Manufacturer rated maximum currents:

With alkaline batteries: 1000mA

With 1*Ni-MH: 1.8A

With 2*Ni-MH: 3.9A

 

Again the Holy Grail off multi voltage capable drivers continues. This driver is single mode only and is fortunately not inflicted with the dreaded next mode memory. The driver does indeed operate over the advertised voltage range. Tested output on 3.5 to 4 volts was surprisingly good with led current draw off .91 to 1.45 amps. I’m not sure on the efficiency off the driver. l’ll leave that for the experts. The disappointment was the output on a single AA NiMH. Three different batteries were tried with the testing on each battery performed three times as I expected the output to be higher at the led. The AA batteries used, all fully charged, were a brand new Eneloop, Turnigy LSD and an old Powercell from Jaycar. The Eneloop gave very slightly higher readings.

An XM-L LED was used for this testing.

 

When the big picture is to big, look for a point you can start at and build from there.