CS7054 Datasheet, PDF (1/12 Pages) Cherry Semiconductor Corporation – Low Side PWM FET Controller

CS7054
Low Side PWM FET
Controller
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 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 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.
Features
• 200 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
• Overcurrent Protection of External MOSFET/IGBT
• Output Inhibit
http://onsemi.com
DIP–14
N SUFFIX
14
CASE 646
1
16
1
SO–16L
DW SUFFIX
CASE 751G
PIN CONNECTIONS AND
MARKING DIAGRAMS
1
OUTPUT
GND
14
V_CC
PGND
FLT
INH
C_OSC
R_OSC
CTL
NC
DIP–14
I_ADJ
I_SENSE+
I_SENSE–
V_REG
1
OUTPUT
GND
FLT
C_OSC
R_OSC
CTL
NC
NC
SO–16L
16
V_CC
NC
PGND
INH
I_ADJ
I_SENSE+
I_SENSE–
V_REG
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
Package Shipping
CS7054YN14
DIP–14 25 Units/Rail
CS7054YDW16
CS7054YDWR16
SO–16L 46 Units/Rail
SO–16L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2001
1
January, 2001 – Rev. 12
Publication Order Number:
CS7054/D