Microcircuit 14461 represents a pulse raising regulator of a voltage for a feed of low-voltage loadings. It can be used as basic component DC/DC of converters in portable and stationary electronic devices of household and industrial purpose. DC/DC converters on its basis have high efficiency - up to 80 %.
The microcircuit will transform an entrance voltage 0,9..5 In to one of the days off — 3,3 In or 5 Century.
The current of loading of a microcircuit can reach 100 <. It has the detector of an entrance voltage and a source of a basic voltage that allows to build accordingly in converters of a voltage on its basis effective system of protection and to receive high stability of a target voltage.
The microcircuit is made on technologies in 8-2K2>4=>< plastic DIP the case such as 2101.8A.
Fig. 1. The block diagram of a microcircuit
Target voltage of a microcircuit (3,3 or 5 ) get out electric connection of its conclusion 3/5 (2K2. 2) accordingly to conclusion OUT (2K2. 6) or to general wire GND (2K2. 7).
The block diagram of a microcircuit is shown fig. 1, and purpose of conclusions explains tab. 1.
The basic electric characteristics are resulted in tab. 2.
Variant of the practical circuit of the converter of a voltage on microcircuit 14461 (UOUT = 5 ) it is shown on fig. 2.
Fig. 2. The circuit of the converter of a voltage on microcircuit 14461
To the circuit on fig. 2 it is necessary to make the following explanatories:
· In quality VD1 diode Shotki is established. Use usual rectify diodes can lead to to decrease in efficiency of the converter and increase in voltage UINL.
· By development of the printed-circuit-board of the converter it is necessary to take into account, that the length of conductors from throttle L1 and diode VD1 to a conclusion of a microcircuit 8 should be minimal.
· To use the panel for connection with a microcircuit it is not recommended.
· Throttle L1 should have high good quality and is reeled up by a wire in diameter not less than 0,5 mm on the probe the core.
The primary source:radiomaster.net. Edit. 06.06. V.F.Gajnutdinov.