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CS4124 Datasheet(PDF) 1 Page - Cherry Semiconductor Corporation |
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CS4124 Datasheet(HTML) 1 Page - Cherry Semiconductor Corporation |
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1 / 6 page  Features s 150mA Peak PWM Gate Drive Output s Patented Voltage Compensation Circuit s 100% Duty Cycle Capability s 5V, ± 3% Linear Regulator s Low Current Sleep Mode s Overvoltage Protection s Boost Mode Power Supply s Output Inhibit Package Option High Side PWM FET Controller CS4124 Description Applications Diagram Preliminary 1 OUTPUT Gnd INH IADJ PMP SNI VREG BOOST FLT ROSC COSC CTL PGnd VCC ISENSE+ ISENSE- 16 Lead PDIP 1195 Consult Factory for 16 Lead SOIC Wide package. Rev. 4/26/99 Cherry Semiconductor Corporation 2000 South County Trail, East Greenwich, RI 02818 Tel: (401)885-3600 Fax: (401)885-5786 Email: info@cherry-semi.com Web Site: www.cherry-semi.com A Company ® The CS4124 is a monolithic integrat- ed circuit designed primarily to control the rotor speed of perma- nent 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) sig- nal. The CS4124 can also be used to control other loads such as incan- descent bulbs and solenoids. Inductive current from the motor or solenoid is recirculated through an external diode. The CS4124 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 on- chip 5V linear regulator, or a fil- tered 0% to 100% PWM signal also referenced to the 5V regulator. The IC is placed in a sleep state by pulling the CTL lead below 0.5V. In this mode everything on the chip is shutdown except for the on-chip regulator and the overall current draw is less than 275µA. There are a number of on-chip diagnostics that look for potential failure modes and can disable the external power MOSFET. VBAT 42.5µH 1000µF 1000µF 10K 10nF 100µF .01µF CFLT .25µF ROSC COSC 470pF 93.1K OUTPUT Gnd INH BOOST FLT ROSC IADJ PMP SNI VREG COSC CTL PGnd VCC P1 N1 10µF 10K 100K 10K 10K 10K RCS1 51 RCS2 51 CCS .022µF 10K 10K Input 470µH MOT+ RGATE 6 RSENSE 4m RSNI 4 1.5µF 1µF 1M ISENSE+ ISENSE- MOT- RS 10 |
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