DataSheetWiki


KA3511 fiches techniques PDF

Fairchild Semiconductor - Intelligent Voltage Mode PWM IC

Numéro de référence KA3511
Description Intelligent Voltage Mode PWM IC
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





1 Page

No Preview Available !





KA3511 fiche technique
www.DataSheet4U.com
INTELLIGENT VOLTAGE MODE PWM IC
KA3511/D
GENERAL DESCRIPTION
The KA3511/D is a fixed-frequency improved-
performance pulse-width modulation control circuit
with complete housekeeping circuitry for use in the
secondary side of SMPS (Switched mode power
supply). It contains various functions, which are
precision voltage reference, over voltage protection,
under voltage protection, remote on/off control, power
good signal generator and etc.
22-DIP-400 / 24-SOP-300
OVP (Over voltage protection) section
It has OVP functions for +3.3V,+5V,+12V and PT
outputs. The circuit is made up of a comparator with
four detecting inputs and without hysteresis voltage.
Especially, PT (Pin16) is prepared for an extra OVP
input or another protection signal.
ORDERING INFORMATION
Device Package Operating Temperature
UVP (Under voltage protection) section
KA3511
22 DIP
-25°C ~ 85°C
It also has UVP functions for +3.3V, +5V, +12V
outputs. The block is made up of a comparator with
three detecting inputs and without hysteresis voltage.
KA3511D 24 SOP
-25°C ~ 85°C
FEATURES
Remote on/off section
DataSheet4U.com
Remote on/off section is used to control SMPS
externally. If a high signal is supplied to the remote on/
• Complete PWM control and house keeping
circuitry
off input, PWM signal becomes a high state and all
secondary outputs are grounded. The remote on/off
signal is transferred with some on-delay and off-delay
• Few external components
• Precision voltage reference trimmed to 2%
time of 8ms, 24ms respectively.
• Dual output for push-pull operation
DataShee
Precision reference section
The reference voltage trimmed to ± 2%
(4.9VVref5.1V)
• Each output TR for 200mA sink current
• Variable duty cycle by dead time control
• Soft start capability by using dead time control
• Double pulse suppression logic
PG (Power good signal generator) section
Power good signal generator is to monitor the voltage
level of power supply for safe operation of a
microprocessor.
KA3511 requires few external components to
accomplish a complete housekeeping circuits for
SMPS. The KA3511 is available in a 22-pin dual in-line
package.
• Over voltage protection for 3.3V / 5V / 12V
• Under voltage protection for 3.3V / 5V / 12V
• One more external input for various protection
(PT)
• Remote on/off control function (PS-ON)
• Latch function controlled by remote and protection
input
• Power good signal generator with hysteresis
DataSheet4U.com
DataSheet4 U .com

PagesPages 21
Télécharger [ KA3511 ]


Fiche technique recommandé

No Description détaillée Fabricant
KA3511 Intelligent Voltage Mode PWM IC Fairchild Semiconductor
Fairchild Semiconductor
KA3511D Intelligent Voltage Mode PWM IC Fairchild Semiconductor
Fairchild Semiconductor
KA3511DS Intelligent Voltage Mode PWM IC Fairchild Semiconductor
Fairchild Semiconductor

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche