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CS7054 Datasheet(PDF) 1 Page - Cherry Semiconductor Corporation

Part No. CS7054
Description  Low Side PWM FET Controller
Download  6 Pages
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Maker  CHERRY [Cherry Semiconductor Corporation]
Homepage  http://www.cherrycorp.com/
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CS7054 Datasheet(HTML) 1 Page - Cherry Semiconductor Corporation

   
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Features
VBAT 42.5
mH
10
mF
CFLT
.25
mF
ROSC
COSC
390pF
OUTPUT
Gnd
INH
FLT
ROSC
IADJ
ISENSE+
NC
VREG
COSC
CTL
PGnd
VCC
P1
N1
10K
100K
10K
10K
10K
RCS1
51
RCS2
51
CCS
.022
mF
10K
10K
Input
1000
mF
MOT+
RSENSE
4m
W
105K
MOT-
1000
mF
RS
51
RGATE
6
10
mF
.01
mF
1M
ISENSE-
s
200 mA Peak PWM Gate
Drive Output
s
Patented Voltage
Compensation Circuit
s
100% Duty Cycle
Capability
s
5V, ± 3% Linear Reg.
s
Low Current Sleep Mode
s
Overvoltage Protection
s
Over Current Protection
of External MOSFET /
IGBT
s
Output Inhibit
Package Options
Low Side PWM FET Controller
CS7054
Description
The CS7054 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 CS7054 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 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 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
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.
Application Diagram
1
OUTPUT
2
3
4
5
6
7
Gnd
FLT
ROSC
CTL
NC
14
13
12
11
10
VCC
PGnd
INH
IADJ
VREG
8
9
COSC
ISENSE+
ISENSE-
14 Lead PDIP
1
Consult factory for 16 lead SO
wide package.
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
¨
Rev. 4/21/99


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