DESCRIPTION
The IP1525A and IP1527A families of PWM switching regulator control circuits offer improved performance and lower parts count when used in designing switching power supplies. Included are 5.1 volt reference, error amplifier, adjustable dead-time oscillator with synchronisation capability, latched PWM comparator, totem-pole output drivers, shutdown, soft start, and undervoltage lockout.
The IP1525A and IP1527A differ only in output phasing. The IP1525A output is low when “off”, while the IP1527A output is high when “off”.

FEATURES
• 8 to 35V operation
• 5.1V reference trimmed to ±1%
• 100Hz to 500kHz oscillator range
• Separate oscillator sync terminal
• Adjustable deadtime control
• Internal soft start
• Input undervoltage lockout
• Latching PWM to prevent multiple pulses
• Dual source/sink output drivers