CONTROLLER. UC1637-SP Datasheet

UC1637-SP Datasheet PDF


Part

UC1637-SP

Description

SWITCHED MODE CONTROLLER

Manufacture

etcTI

Page 12 Pages
Datasheet
Download UC1637-SP Datasheet


UC1637-SP Datasheet
UC1637-SP
www.ti.com
SLUS950 – FEBRUARY 2010
RAD-TOLERANT CLASS-V, SWITCHED MODE CONTROLLER
FOR DC MOTOR DRIVE
Check for Samples: UC1637-SP
FEATURES
1
• QML-V Qualified, SMD 5962-89957
• Rad Tolerant: 30 kRad(Si) TID (1)
– TID Dose Rate = 10 mRad/sec
• Single or Dual Supply Operation
• ±2.5-V to ±20-V Input Supply Range
• ±5% Initial Oscillator Accuracy; ±10% Over
Temperature
• Pulse-by-Pulse Current Limiting
• Under-Voltage Lockout
• Shutdown Input with Temperature
Compensated 2.5-V Threshold
• Uncommitted PWM Comparators for Design
(1) Radiation tolerance is a typical value based upon initial device
qualification. Radiation Lot Acceptance Testing is available -
contact factory for details.
Flexibility
• Dual 100-mA Source/Sink Output Drivers
W PACKAGE
(TOP VIEW)
DESCRIPTION
The UC1637 is a pulse width modulator circuit intended to be used for a variety of PWM motor drive and
amplifier applications requiring either uni-directional or bi-directional drive circuits. When used to replace
conventional drivers, this circuit can increase efficiency and reduce component costs for many applications. All
necessary circuitry is included to generate an analog error signal and modulate two bi-directional pulse train
outputs in proportion to the error signal magnitude and polarity.
This monolithic device contains a sawtooth oscillator, error amplifier, and two PWM comparators with ±100-mA
output stages as standard features. Protection circuitry includes under-voltage lockout, pulse-by-pulse current
limiting, and a shutdown port with a 2.5-V temperature compensated threshold.
The UC1637 is characterized for operation over the full space temperature range of –55°C to 125°C.
TA
–55°C to 125°C
ORDERING INFORMATION
PACKAGE
ORDERABLE PART NUMBER
CFP-20
5962-8995701VSA
TOP-SIDE MARKING
UC1637W-SP
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2010, Texas Instruments Incorporated

UC1637-SP Datasheet
UC1637-SP
SLUS950 – FEBRUARY 2010
20
FUNCTIONAL BLOCK DIAGRAM
-AIN
13 12
www.ti.com
16
18
17
19
15
14
ABSOLUTE MAXIMUM RATINGS(1) (2)
over operating free-air temperature range (unless otherwise noted)
VS Supply voltage
IO Output current, source/sink (AOUT, BOUT)
Peak
Steady-state
Analog inputs
(+VTH, CT, -VTH, +BIN, -BIN, -AIN, +AIN, +C/L, -C/L, SHUTDOWN, +E/A, -E/A )
Error amplifier output current (E/AOUTPUT)
Oscillator charging current (ISET)
TJ Junction temperature
Tstg Storage temperature range
Lead temperature (soldering, 10 seconds)
VALUE
±20
500
100
±VS
±20
–2
150
–65 to 150
300
UNIT
V
mA
V
mA
mA
°C
°C
°C
(1) Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings
only. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) Currents are positive into, negative out of the specified terminal.
2 Submit Documentation Feedback
Product Folder Link(s): UC1637-SP
Copyright © 2010, Texas Instruments Incorporated


Features Datasheet pdf UC1637-SP www.ti.com SLUS950 – FEBRU ARY 2010 RAD-TOLERANT CLASS-V, SWITCHED MODE CONTROLLER FOR DC MOTOR DRIVE Che ck for Samples: UC1637-SP FEATURES 1 QML-V Qualified, SMD 5962-89957 • Rad Tolerant: 30 kRad(Si) TID (1) – T ID Dose Rate = 10 mRad/sec • Single o r Dual Supply Operation • ±2.5-V to ±20-V Input Supply Range • ±5% Init ial Oscillator Accuracy; ±10% Over Tem perature • Pulse-by-Pulse Current Lim iting • Under-Voltage Lockout • Shu tdown Input with Temperature Compensate d 2.5-V Threshold • Uncommitted PWM C omparators for Design (1) Radiation tol erance is a typical value based upon in itial device qualification. Radiation L ot Acceptance Testing is available cont act factory for details. Flexibility Dual 100-mA Source/Sink Output Drive rs W PACKAGE (TOP VIEW) DESCRIPTION Th e UC1637 is a pulse width modulator cir cuit intended to be used for a variety of PWM motor drive and amplifier applic ations requiring either uni-directional or bi-directional drive circuits. When used to repl.
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