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Número de pieza | MC34063E | |
Descripción | DC/DC Converter Contolr Circuits | |
Fabricantes | ST Microelectronics | |
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MC34063A
MC34063E
DC/DC CONVERTER CONTROL CIRCUITS
s OUTPUT SWITCH CURRENT IN EXCESS
OF 1.5A
s 2% REFERENCE ACCURACY
s LOW QUIESCENT CURRENT: 2.5mA (TYP.)
s OPERATING FROM 3V TO 40V
s FREQUENCY OPERATION TO 100KHz
s ACTIVE CURRENT LIMITING
DESCRIPTION
The MC34063A/E series is a monolithic control
circuit delivering the main functions for DC/DC
voltage converting.
The device contains an internal temperature
compensated reference, comparator, duty cycle
controlled oscillator with an active current limit
circuit, driver and high current output switch.
Output voltage is adjustable through two external
resistors with a 2% reference accuracy.
Employing a minimum number of external
components the MC34063A/E devices series is
designed for Step-Down, Step-Up and
Voltage-Inverting applications.
BLOCK DIAGRAM
DIP-8
SO-8
March 2004
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1/16
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1 page Figure 5 : Power Collector Emitter Saturation
Voltage (VCEsat) vs Temperature
MC34063A/E
Figure 8 : Bias Current vs Temperature
Figure 6 : Current Limit Sense Voltage (VIPK) vs
Temperature
Figure 9 : Supply Current vs Temperature
Figure 7 : Reference Voltage vs Temperature
Figure 10 : Supply Current vs Input Voltage
5/16
5 Page Voltage Inverting With External NPN Switch
MC34063A/E
Voltage Inverting With External PNP Saturated Switch
11/16
11 Page |
Páginas | Total 16 Páginas | |
PDF Descargar | [ Datasheet MC34063E.PDF ] |
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