BCD Semiconductor Manufacturing Limited AZ7500E
The AZ7500E is a voltage mode pulse width modulation switching regulator control circuit designed primarily for power supply control. The AZ7500E consists of a reference voltage circuit, two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, and an output control circuit. The precision of voltage reference (VREF) is improved up to 1% through trimming and this provides a better output voltage regulation.GENERAL DESCRIPTION
The AZ7500E provides for pushpull or single-ended output operation, which can be selected through the output control. AZ7500E is the enhanced version of AZ7500B for it improves REF Pin's reliability comparing with AZ7500B. The AZ7500E is available in standard packages of DIP-16 and SOIC-16. AZ7500EFEATURES
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● Stable 4.95V Reference Voltage Trimmed to ±1.0% Accuracy Uncommitted Output TR for 200mA Sink or Source Current Single-End or Push-Pull Operation Selected by Output Control Internal Circuitry Prohibits Double Pulse at Either Output Complete PWM Control Circuit with Variable Duty Cycle On-Chip Oscillator With Master or Slave Operation
APPLICATIONS
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● SMPS Back Light Inverter Charger SOIC-16 DIP-16 Figure 1. Package Types of AZ7500E Oct. 2008 Rev. 1. 2 1 BCD Semiconductor Manufacturing Limited Data Sheet PULSE-WIDTH-MODULATION CONTROL CIRCUITS AZ7500E Pin Configuration M Package (SOIC-16) 1IN + 1IN FEEDBACK DTC CT RT GND C1 1 2 3 4 5 6 7 8 16 15 14 1...