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MT34063 Dataheets PDF



Part Number MT34063
Manufacturers Matrix Microtech
Logo Matrix Microtech
Description Universal DC-DC Converter
Datasheet MT34063 DatasheetMT34063 Datasheet (PDF)

MT34063 Universal DC to DC Converter ‹ DESCRIPTION The MT34063 is designed for the applications which require DC - DC converters. It can be operated in a wide input range from 3.0V to 40V and has the controlled duty cycle oscillator, driver and high current output switch. Also, with the internal temperature compensation circuit, the MT34063 provides an internally trimmed precision 2% reference voltage of 1.25V. These features make the MT34063 suitable for step-up, step-down and voltage–inverting.

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MT34063 Universal DC to DC Converter ‹ DESCRIPTION The MT34063 is designed for the applications which require DC - DC converters. It can be operated in a wide input range from 3.0V to 40V and has the controlled duty cycle oscillator, driver and high current output switch. Also, with the internal temperature compensation circuit, the MT34063 provides an internally trimmed precision 2% reference voltage of 1.25V. These features make the MT34063 suitable for step-up, step-down and voltage–inverting applications. The M34063 is available in the 8-Pin Plastic SOIC and 8-Pin Plastic DIP packages. ‹ ¾ ¾ ¾ ¾ ¾ ¾ ¾ FEATURES Output switch current up to 1.5A Wide supply voltage range 3.0V to 40V 100kHz operational frequency Low standby current Adjustable Output Voltage Internally trimmed 2% 1.25V Reference Voltage Direct pin-to-pin replacement for industrial product MC34063A. ‹ ¾ ¾ ¾ APPLICATIONS Adaptors Battery chargers Mother Board ‹ PIN CONFIGURATIONS SOP-8 (Top View) DIP-8 (Top View) MT34063M MT34063T -1- www.matrix-microtech.com.tw Free Datasheet http://www.datasheet4u.net/ MT34063 Universal DC to DC Converter ‹ BLOCK DIAGRAM Pin Assignment Descriptions Pin 1 : SC - Switch Collector Pin Pin 2 : SE - Switch Emitter Pin 3 : Cap - Oscillator Timing Capacitor Pin 4 : GND - Ground Pin 8 : DrC- Driver Collector Pin 7 : ISEN- I Peak Sense Pin 6 : VCC- Power Supply Pin 5 : VFB- Comparator inverting input ‹ ABSOLUTE MAXIMUM RATINGS Parameter Supply voltage Thermal resistance junction to ambient SOP-8 DIP-8 Junction temperature Storage temperature range Operating temperature Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. Symbol VCC Maximum 40 150 95 150 -65 to 150 0 to 70 Unit V O O θJA TJ TSTG TOPR C/W C/W O O O C C C -2- www.matrix-microtech.com.tw Free Datasheet http://www.datasheet4u.net/ MT34063 Universal DC to DC Converter ‹ ORDERING INFORMATION Device MT34063M MT34063T M T Package SOP-8 DIP-8 TA (OC) 0 to 70 0 to 70 Note ‹ POWER DISSIPATION TABLE Package M T Note : 1. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown 2. Tj: Junction Temperature Calculation: TJ = TA + (PD × θJA), The θJA numbers are guidelines for the thermal performance of the device/PC-board system All of the above assume no ambient airflow 3. θJa: Thermal Resistance-Junction to Ambient, DF: Derating factor, PO: Power consumption. θJA ( C /W ) O TA=70 OC TA= 85 OC Df( mW/ OC) TA≤ 25 OC O TA≥ 25 C Power rating(mW) Power rating(mW) Power rating (mW) 6.06 10.53 833 1316 533.3 842 433.3 684 150 95 ‹ RECOMMENDED OPERATING CONDITIONS VCC = 5.0 V, TA = TLOW to THIGH unless otherwise specified Parameter Comparator Input Voltage Switch Collector Voltage Switch Emitter Voltage (VPin1=40V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Timing Capacitor (connected to Cap pin) Operating Ambient Temperature Range Symbol VFB VC(switch) VE(switch) VCE(switch) VC(driver) IC(driver) ISW CT TA Operating Conditions Min. Typ. Max. -0.3 to +40 1 0 to +70 40 40 40 40 100 1.5 - Unit V V V V V mA A nF O C Note 1: Maximum package power dissipation limits must be observed. -3- www.matrix-microtech.com.tw Free Datasheet http://www.datasheet4u.net/ MT34063 Universal DC to DC Converter ‹ ELECTRICAL CHARACTERISTICS Vcc = 5.0 V, TA = Tlow to Thigh unless otherwise specified Parameter OSCILLATOR Frequency Charge Current Discharge Current Symbol Test Conditions Min. Typ Max. Unit fOSC Ichg Idischg VPin5 = 0 V, CT = 1.0nF, TA = 25 OC VCC = 5.0 V to 40 V, TA = 25°C VCC = 5.0 V to 40 V, TA = 25°C 24 24 140 5.2 250 33 35 220 6.5 300 45 45 290 7.5 350 KHz μA μA mV Discharge to Charge Current Ratio Idischg/Ichg Pin 7 to VCC, TA = 25°C Current Limit Sense Voltage OUTPUT SWITCH Saturation Voltage, Darlington Connection Saturation Voltage DC Current Gain Collector Off─State Current COMPARATOR Threshold Voltage Threshold Voltage Line Regulation Input Bias Current TOTAL DEVICE VCC = 5.0 V to 40 V, Supply current ICC CT = 1.0nF, Pin 7 = VCC, VFB > Vth, Pin 2= GND, remaining pins open Vth Regline IIB TA = 25°C TA =0°C to 70°C VCC = 3.0 V to 40 V VFB = 0 V VCE(sat) VCE(sat) hFE IC(off) ISW = 0.8 A, Pins 1, 8 connected ISW = 1.0 A, Rpin 8 = 82 Ω to VCC, Forced β = 20 ISW = 1.0 A, VCE = 5.0 V, TA = 25°C VCE = 40 V Vsense Ichg = Idischg, TA = 25°C 50 - 1.0 0.45 75 0.01 1.3 0.7 100 V V μA 1.225 1.25 1.275 1.21 1.4 -20 1.29 5.0 -400 V mV nA - - 4.0 mA -4- www.matrix-microtech.com.tw Free Datasheet http://www.datasheet4u.net/ MT34063 ‹ Universal DC to DC Converter TYPICAL APPLICATIONS Figure1. Step-Up Converter Application Circuit Figure2. External Current boost Connections for IC Peak Greater than 1.5A 2.a External NPN Switch 2.b External NPN Saturated Sw.


SIM908 MT34063 LTN140AT02-C


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