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MC33025P データシート(PDF) 1 Page - ON Semiconductor |
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MC33025P データシート(HTML) 1 Page - ON Semiconductor |
1 / 20 page MC34025 MC33025 DW SUFFIX PLASTIC PACKAGE CASE 751G (SO–16L) P SUFFIX PLASTIC PACKAGE CASE 648 PIN CONNECTIONS 16 1 16 1 11 5 2 1 Error Amp Noninverting Input Current Limit/ Shutdown Ground Output A Power Ground VC Output B VCC Vref 9 10 12 13 14 15 16 8 7 6 4 3 (Top View) Soft–Start Ramp CT RT Clock Error Amp Output Error Amp Inverting Input Device Operating Temperature Range Package ORDERING INFORMATION MC33025DW MC34025P TA = 0° to +70°C SO–16L Plastic DIP TA = – 40° to +105°C MC33025P Plastic DIP MC34025DW SO–16L Order this document by MC34025/D 1 MOTOROLA ANALOG IC DEVICE DATA High Speed Double-Ended PWM Controller The MC34025 series are high speed, fixed frequency, double–ended pulse width modulator controllers optimized for high frequency operation. They are specifically designed for Off–Line and DC–to–DC converter applications offering the designer a cost effective solution with minimal external components. These integrated circuits feature an oscillator, a temperature compensated reference, a wide bandwidth error amplifier, a high speed current sensing comparator, steering flip–flop, and dual high current totem pole outputs ideally suited for driving power MOSFETs. Also included are protective features consisting of input and reference undervoltage lockouts each with hysteresis, cycle–by–cycle current limiting, and a latch for single pulse metering. The flexibility of this series allows it to be easily configured for either current mode or voltage mode control. • 50 ns Propagation Delay to Outputs • Dual High Current Totem Pole Outputs • Wide Bandwidth Error Amplifier • Fully–Latched Logic with Double Pulse Suppression • Latching PWM for Cycle–By–Cycle Current Limiting • Soft–Start Control with Latched Overcurrent Reset • Input Undervoltage Lockout with Hysteresis • Low Start–Up Current (500 µA Typ) • Internally Trimmed Reference with Undervoltage Lockout • 90% Maximum Duty Cycle (Externally Adjustable) • Precision Trimmed Oscillator • Voltage or Current Mode Operation to 1.0 MHz • Functionally Similar to the UC3825 Simplified Application Error Amp Oscillator 4 16 Vref Clock 5 6 RT CT 3 7 Ramp Error Amp Output 2 Inverting Input 1 8 Soft–Start Soft–Star t Latching PWM and Steering Flip Flop Ground 10 9 Current Limit/ Shutdown Output B 14 VC 13 VCC 15 UVLO 5.1V Reference 11 Noninverting Input Power Ground 12 Output A This device contains 227 active transistors. © Motorola, Inc. 1996 Rev 1 |
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同様の説明 - MC33025P |
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