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MC33025P. |MC33025PON ?N/a15avaiHI-SPD PWM Controller


MC33025P. ,HI-SPD PWM ControllerELECTRICAL CHARACTERISTICS (V = 15 V, R = 3.65 k, C = 1.0 nF, for typical values T = +25°C, for mi ..
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MC74HC125AFEL ,Buffer, Non-Inverting 3-StateMAXIMUM RATINGS*Symbol Parameter Value UnitÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎThis de ..
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MC74HC125AFR1 ,Quad With 3-State Outputs NonInverting BufferELECTRICAL CHARACTERISTICS (C = 50 pF, Input t = t = 6.0 ns)L r fGuaranteed LimitÎÎV – 55 toÎ CCÎÎÎ ..


MC33025P.
HI-SPD PWM Controller
MC34025, MC33025
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 �A Typ) Internally Trimmed Reference with Undervoltage Lockout 45% Maximum Duty Cycle (Externally Adjustable) Precision Trimmed Oscillator Voltage or Current Mode Operation to 1.0 MHz Functionally Similar to the UC3825
Vref
Clock
Ramp
Error Amp
Output
Inverting
Input1
Soft-Start
Ground10 Current
Limit/
Shutdown
Output BNoninverting
Input Power
Ground
Output A
This device contains 227 active transistors.
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