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BM34063 Datasheet DC-DC CONVERTER

Manufacturer: Unknown Manufacturer

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Datasheet Details

Part number BM34063
Manufacturer Unknown Manufacturer
File Size 113.18 KB
Description DC-DC CONVERTER
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General Description

The BM34063 Series is a monolithic control circuit containing the primary functions required for DC-to-DC converters.

These devices consist of an internal temperature compensated reference, comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch.

Pin Assignment DIP/SOP-8 1 2 3 4 SW C SW E TC GND DRC Ipk VCC FB 8 Pin1: Switch Collector (SWC) Pin2: Switch Emitter (SWE) 7 6 5 Pin5: Comparator Inverting Input (FB) Pin6: Voltage Supply (Vcc) Pin7: Ipk Sense (Ipk) Pin3: Timing Capacitor (TC) Pin4: Ground (GND) Pin8: Voltage Driver Collector (DRC) Ordering Information Part Number www.DataSheet4U.com BM34063HP BM34063HS Package DIP-8 SOP-8 2004/06/15 1 BM34063 DC-DC CONVERTER Absolute Maximum Ratings (Ta=25°C, Unles Otherwise Specified) Parameter Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage Switch Emitter to Collector Voltage Driver Collector Voltage Switch Current Power Dissipation at Ta=25oC Operating Ambient Temperature Range Storage Temperature Range Operating Junction Temperature Thermal Resistance Junction-ambient Symbol VCC Vir VC(SW) VSWE VCE VC(DR) ISW PD Topr Tstg Topj θJA DIP-8 SO-8 0~+70 -65~+150 120 125 o Value 40 -0.3~+40 40 40 40 40 1.5 1 0.625 Unit V V V V V V A W o o o C C C C/W Block Diagram SC Pin1: 1.6A Switch Collector Q2 www.DataSheet4U.com DRI Pin8: Driver Collector Q S R 80Ω Q1 IPK CT Oscillator IPK Pin7: Highside Current Sense Input, VCC-VIPK=300mV SE Pin2: Darlington Switch Emitter TC Pin3: Oscilletor Timing Capacitor 1.25V Reference Voltage VCC Comparator Pin6: Power Supply Input + FB

Overview

BM34063 DC-DC CONVERTER.

Key Features

  • z z z z z z z z 3V to 40V Input Voltage Operation Internal 1.6A Peak Current Switch Internal ±1.8% Reference Low Quiescent Current at 1.6mA Frequency Operation from 100Hz~100KHz Output Voltage Adjustable Active Current Limiting Step-Up, Step-Down or Inverting Switching Regulators.

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