CS7054

Features:

·200 mA Peak PWM Gate Drive Output
·Patented Voltage Compensation Circuit
·100% Duty Cycle Capability
·5V, ± 3% Linear Reg.
·Low Current Sleep Mode
·Overvoltage Protection
·Over Current Protection of External MOSFET / IGBT
·Output Inhibit


Pinout




Specifications

Storage Temperature .................................................................................................65 to 150
V_CC ..............................................................................................................................-0.3V to 30V
Supply Voltage Range (load dump = 26Vw/series 51½ resistor) V_CC Peak Transient Voltage...40V
Input Voltage Range (at any input) .............................................................................-0.3V to 10V
Maximum Junction Temperature .............................................................................................150
ESD Capability (Human Body Model) .........................................................................................2kV
Lead Temperature Soldering: Wave Solder (through hole styles only).....10 sec. max, 260 peak


Description

The CS7054 is a monolithic integrated circuit designed primarily to control the rotor speed of permanent magnet, direct current (DC) brush motors. It drives the gate of an N channel power MOSFET or IGBT with a user-adjustable, fixed frequency, variable duty cycle, pulse width modulated (PWM) signal.

The CS7054 can also be used to control other loads such as incandescent bulbs and solenoids. Inductive current from the motor or solenoid is recirculated through an external diode.The CS7054 accepts a DC level input signal of 0 to 5V to control the pulse width of the output signal. This signal can be generated by a potentiometer referenced to the onchip 5V linear regulator, or a filtered 0% to 100% PWM signal also referenced to the 5V regulator.

The IC CS7054 is placed in a sleep state by pulling the CTL lead below 0.5V. In this mode everything on the chip is shut down except for the on-chip regulator and the overall current draw is less than 275 µA. There are a number of on-chip diagnostics that look for potential failure modes and can disable the external power MOSFET.