NJM3524M

NJM3524 SWITCHING REGULATOR CONTROL CIRCUIT ■ GENERAL DESCRIPTION ■ PACKAGE OUTLINE The NJM3524 of regulating pulse width modulators contains all of the control circuitry necessary to implement switching regulators of either polarity converters and voltage doublers, as well as other power control applications. This device includes a 5V voltage regulator capable of supplying up to 50mA to external circuitry a control amplifier, an oscillator, a pulse width modulator, a phase splitting flip-flop, dual alternating output NJM3524D NJM3524M switch transistors, and current limiting and shut-down circuitry. Both the regulator output transistor and each output switch are internally current limited and, to limit junction temperature, an internal thermal shut-down circuit is employed. NJM3524V ■ FEATURES Operating Voltage (8V to 40V) Complete PWM Power Control Circuitry Uncommitted Outputs for Single-Ended or Pash-Pull Appli Cutions Low Stand by Current Package Outline DIP16, DMP16, SSOP16 Bipolar Technology ■ RECOMMEND OPERATING CONDITION Parameter Symbol Min. Typ. Max. Unit Operating Voltage V+ 8 20 40 V Output Reference Current IREF 0 - 50 mA Timing Resistance RT 1.8 - 100 kΩ Timing Capacitor CT - 0.1 µF Operating Temperature Range Topr -20 25 75 °C ■ PIN CONFIGURATION ■ EQUIVALENT CIRCUIT Ver.2003-07-18 -1- NJM3524 ■ ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Supply Voltage V+ Output Current IO Output Refere...