CS4124 Datasheet, PDF (1/12 Pages) Cherry Semiconductor Corporation – High Side PWM FET Controller

CS4124
High Side PWM FET
Controller
The CS4124 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 CS4124 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 CS4124 accepts a DC level input signal of 0 to 5.0 V to control
the pulse width of the output signal. This signal can be generated by a
potentiometer referenced to the on–chip 5.0 V linear regulator, or a
filtered 0% to 100% PWM signal also referenced to the 5.0 V
regulator.
The IC is placed in a sleep state by pulling the CTL lead below 0.5 V.
In this mode everything on the chip is shutdown 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.
Features
• 150 mA Peak PWM Gate Drive Output
• Patented Voltage Compensation Circuit
• 100% Duty Cycle Capability
• 5.0 V, ± 3.0% Linear Regulator
• Low Current Sleep Mode
• Overvoltage Protection
• Boost Mode Power Supply
• Output Inhibit
http://onsemi.com
16
1
DIP–16
N SUFFIX
CASE 648
PIN CONNECTION AND
MARKING DIAGRAM
1
OUTPUT
BOOST
FLT
R_OSC
C_OSC
CTL
PGND
V_CC
16
GND
INH
I_ADJ
I_SENSE+
I_SENSE–
PMP
SNI
V_REG
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION*
Device
Package
Shipping
CS4124YN16
DIP–16
25 Units/Rail
* Contact your local sales representative for 16-lead SOIC wide package.
© Semiconductor Components Industries, LLC, 2000
1
November, 2000 – Rev. 6
Publication Order Number:
CS4124/D