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STD 5~12 boost circuit

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Update time: 2021-04-09 13:56:34
Creation time: 2016-05-10 08:06:00
Description
1、working principle: Due to the built-in power switch with a large current, 34063 can control the switch current to 1.5A. The internal circuit includes a reference voltage source oscillator, a converter, a logic control circuit, and a switching transistor. Reference voltage source is a bandgap reference with temperature compensation. The oscillation frequency of the oscillator is determined by the external timing capacitor of the 3 pin. The switching transistor is composed of a reverse input terminal of the comparator and a logic control circuit connected with the oscillator, and is provided with a ON, and is composed of a next pulse which is synchronized with the output of the oscillator to be OFF. 2、Function Description: This module is mainly to achieve DC 5V boost to DC 12V; 3、Description of each function module:
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ID Name Designator Footprint Quantity
1 OUT X2,X1 H2-5.0-10.5X8.0MM 2
2 150uH L1 Z-150uH 1
3 MC33063_MC34063P U1 DIP8 1
4 1 R1 PR-D2.3XL6.5MM 1
5 200 R2 PR-D2.3XL6.5MM 1
6 104 C1,C3 CERAMIC-2.54 2
7 47uF C4 PC-D5.0MM 1
8 101 C2 CERAMIC-2.54 1
9 10K R3 PR-D2.3XL6.5MM 1
10 1.2K R4 PR-D2.3XL6.5MM 1
11 1N5819 D1 DO-35 1

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