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TS3843BCD

Description
High Performance Current Mode Controller
CategoryPower/power management    The power supply circuit   
File Size373KB,20 Pages
ManufacturerTaiwan Semiconductor
Websitehttp://www.taiwansemi.com/
Environmental Compliance
Download Datasheet Parametric Compare View All

TS3843BCD Overview

High Performance Current Mode Controller

TS3843BCD Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerTaiwan Semiconductor
package instructionDIP, DIP8,.3
Reach Compliance Codecompliant
ECCN codeEAR99
control modeCURRENT-MODE
JESD-30 codeR-PDIP-T8
Humidity sensitivity level1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-20 °C
Maximum output current0.2 A
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
surface mountNO
Maximum switching frequency500 kHz
Temperature levelOTHER
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
Base Number Matches1
TS3842B/3843B
High Performance Current Mode Controller
Designed for Off-Line and DC-to-DC
converter applications.
DIP-8
SOP-8
General Description
The TS3842B and TS3843B series are high performance fixed frequency current mode controllers.
This is specifically designed for Off-Line and DC-to-DC converter applications offering the designer a
cost effective solution with minimal external components. This integrated circuits feature a trimmed
oscillator for precise duty cycle control, a temperature compensated reference, high gain error
amplifier, current sensing comparator, and a high current totem pole output ideally suited for driving
a power MOSFET.
Also included are protective features consisting of input and reference undervoltage lockouts each
with hysteresis, cycle-by-cycle current limiting, programmable output deadtime, and a latch for
single pulse metering.
This device is available in 8-pin dual-in-line plastic packages as well as the 8-pin plastic surface
mount (SOP-8). The SOP-8 package has separate power and ground pins for the totem pole output
stage.
The TS3842B has UVLO thresholds of 16V (on) and 10V (off), ideally suited for off-line converters.
Features
Trimmed Oscillator Discharge Current for
Precise Duty Cycle Control
Current Mode Operation to 500KHz
Automatic Feed Forward Compensation
Latching PWM for Cycle-By-Cycle Current
Limiting
Internally Trimmed Reference with Undervoltage
Lockout
High Current Totem Pole Output
Undervoltage Lockout with Hystersis
Low Start-Up and Operating Current
Block Diagram
V
CC
V
ref
8(14)
R
R
R
T
/C
T
4(7)
Voltage
Feedback
Input
2(3)
Output
Compensation
1(1)
V
ref
Undervoltage
Lockout
5.0V
Reference
7(12)
V
CC
Undervoltage
Lockout
V
C
7(11)
Output
Oscillator
Latching
PWM
+
-
Ordering Information
OPERATING TEMPERATURE
(Ambient)
-20 to +85+
DEVICE
TS3842/3843BCD
TS3842/3843BCS
PACKAGE
DIP-8
SOP-8
6(10)
Power
Ground
5(8)
Current
Sense
3(5)Input
Error
Amplifier
The document contains information on a new product.Specifications and
information herein are subject to change without notice.

TS3843BCD Related Products

TS3843BCD TS3842B TS3842BCD TS3843B TS3843BCS TS3842BCS
Description High Performance Current Mode Controller High Performance Current Mode Controller High Performance Current Mode Controller High Performance Current Mode Controller High Performance Current Mode Controller High Performance Current Mode Controller
Is it Rohs certified? conform to - conform to - conform to conform to
Maker Taiwan Semiconductor - Taiwan Semiconductor - Taiwan Semiconductor Taiwan Semiconductor
package instruction DIP, DIP8,.3 - DIP, DIP8,.3 - SOP, SOP8,.25 SOP, SOP8,.25
Reach Compliance Code compliant - compli - compliant compli
ECCN code EAR99 - EAR99 - EAR99 EAR99
control mode CURRENT-MODE - CURRENT-MODE - CURRENT-MODE CURRENT-MODE
JESD-30 code R-PDIP-T8 - R-PDIP-T8 - R-PDSO-G8 R-PDSO-G8
Humidity sensitivity level 1 - 1 - 1 1
Number of terminals 8 - 8 - 8 8
Maximum operating temperature 85 °C - 85 °C - 85 °C 85 °C
Minimum operating temperature -20 °C - -20 °C - -20 °C -20 °C
Maximum output current 0.2 A - 0.2 A - 0.2 A 0.2 A
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP - DIP - SOP SOP
Encapsulate equivalent code DIP8,.3 - DIP8,.3 - SOP8,.25 SOP8,.25
Package shape RECTANGULAR - RECTANGULAR - RECTANGULAR RECTANGULAR
Package form IN-LINE - IN-LINE - SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 260 - 260 - 260 260
Certification status Not Qualified - Not Qualified - Not Qualified Not Qualified
surface mount NO - NO - YES YES
Maximum switching frequency 500 kHz - 500 kHz - 500 kHz 500 kHz
Temperature level OTHER - OTHER - OTHER OTHER
Terminal form THROUGH-HOLE - THROUGH-HOLE - GULL WING GULL WING
Terminal pitch 2.54 mm - 2.54 mm - 1.27 mm 1.27 mm
Terminal location DUAL - DUAL - DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED - NOT SPECIFIED - NOT SPECIFIED NOT SPECIFIED
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