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MC34167 Datasheet(PDF) 1 Page - ON Semiconductor |
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MC34167 Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 20 page © Semiconductor Components Industries, LLC, 2005 November, 2005 − Rev. 7 1 Publication Order Number: MC34167/D MC34167, MC33167 5.0 A, Step−Up/Down/ Inverting Switching Regulators The MC34167, MC33167 series are high performance fixed frequency power switching regulators that contain the primary functions required for dc−to−dc converters. This series was specifically designed to be incorporated in step−down and voltage−inverting configurations with a minimum number of external components and can also be used cost effectively in step−up applications. These devices consist of an internal temperature compensated reference, fixed frequency oscillator with on−chip timing components, latching pulse width modulator for single pulse metering, high gain error amplifier, and a high current output switch. Protective features consist of cycle−by−cycle current limiting, undervoltage lockout, and thermal shutdown. Also included is a low power standby mode that reduces power supply current to 36 mA. Features • Output Switch Current in Excess of 5.0 A • Fixed Frequency Oscillator (72 kHz) with On−Chip Timing • Provides 5.05 V Output without External Resistor Divider • Precision 2% Reference • 0% to 95% Output Duty Cycle • Cycle−by−Cycle Current Limiting • Undervoltage Lockout with Hysteresis • Internal Thermal Shutdown • Operation from 7.5 V to 40 V • Standby Mode Reduces Power Supply Current to 36 mA • Economical 5−Lead TO−220 Package with Two Optional Leadforms • Also Available in Surface Mount D2PAK Package • Moisture Sensitivity Level (MSL) Equals 1 • Pb−Free Packages are Available Figure 1. Simplified Block Diagram (Step Down Application) EA VO ILIMIT Vin 4 2 S Q R UVLO 3 5 L 5.05 V/ 5.0 A Reference Thermal PWM Oscillator 1 This device contains 143 active transistors. TO−220 TH SUFFIX CASE 314A See detailed ordering and shipping information in the package dimensions section on page 17 of this data sheet. ORDERING INFORMATION 1 5 MARKING DIAGRAMS 1 5 TO−220 TV SUFFIX CASE 314B 1 5 Heatsink surface connected to Pin 3 TO−220 T SUFFIX CASE 314D Pin 1. Voltage Feedback Input 2. Switch Output 3. Ground 4. Input Voltage/VCC 5. Compensation/Standby D2PAK D2T SUFFIX CASE 936A Heatsink surface (shown as terminal 6 in case outline drawing) is connected to Pin 3 x = 3 or 4 A = Assembly Location WL = Wafer Lot Y = Year WW = Work Week G = Pb−Free Package MC 3x167T AWLYWWG 1 5 15 http://onsemi.com MC 3x167T AWLYWWG MC 3x167T AWLYWWG MC 3x167T AWLYWWG |
Número de pieza similar - MC34167_05 |
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Descripción similar - MC34167_05 |
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