STR-A6252M 반도체 회로 부품 판매점
Universal-Input 20 W 67 kHz Flyback Switching Regulators
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 Sanken Electric |
Sanken Power Devices
from Allegro MicroSystems
www.datasheet4u.com
STR-A6252M
Universal-Input 20 W 67 kHz
Flyback Switching Regulators
Approximate Scale 1:1
Package DIP-8
FEATURES AND BENEFITS
67 kHz PWM with ±5% frequency jittering for EMI noise
filtering and cost reduction
Rugged 650 V avalanche-rated MOSFET:
• Simplified surge absorption
• No VDSS derating required
Low RDS(on) : 2.8 Ω maximum
Auto-burst mode for stand-by operation or light loads; less
transformer audible noise
Built-in leading edge blanking
Soft start and low start-up current; start-up circuit disabled in
operation
Auto-burst stand-by (intermittent operation) input power
<0.1 W at no load
Built-in constant-voltage/constant current (CV/CC)
Multiple protections:
• Pulse-by-pulse overcurrent protection (OCP)
• Overload protection (OLP) with auto restart
• Latching overvoltage protection (OVP)
• Undervoltage lockout (UVLO) with hysteresis
• Latching thermal shutdown (TSD)
The STR-A6252M is a 67 kHz PWM topology (with ±5%
frequency jittering for minimum EMI) regulator specifically
designed to satisfy the requirements for increased integration and
reliability in flyback converters. It incorporates a primary control
and drive circuit with an avalanche-rated power MOSFET. This
is a higher-frequency version of the STR-A6252.
Covering the power range from below 24 watts for a
230 VAC input, or to 20 watts for a universal (85 to 264 VAC)
input, this device can be used in a wide range of applications,
from DVD players and VCR player/recorders to ac adapters
for cellular phones and digital cameras. An auto-burst standby
function reduces power consumption at light load, while multiple
protections, including the avalanche-energy guaranteed MOSFET,
provide high reliability of system design.
Cycle-by-cycle current limiting, undervoltage lockout with
hysteresis, overvoltage protection, and thermal shutdown protect
the power supply during the normal overload and fault conditions.
Overvoltage protection and thermal shutdown are latched after a
short delay. The latch may be reset by cycling the input supply.
Low start-up current and a low-power standby mode selected
from the secondary circuit completes a comprehensive suite of
features.
It is provided in an 8-pin mini-DIP plastic package with pin
6 removed. The leadframe plating is pure Sb, and the package
complies with RoHS.
All performance characteristics given are typical values for circuit or
system baseline design only and are at the nominal operating voltage and Always order by complete part number, e.g.: STR-A6252M
an ambient temperature of +25°C, unless otherwise stated.
Datasheet 28103.44-5a
STR-A6252M
Universal-Input 20 W 67 kHz
Flyback Switching Regulators
www.datasheet4u.com
FUNCTIONAL BLOCK DIAGRAM AND TERMINAL ASSIGNMENTS
Vcc 5
OVP
32V
TSD
125°C
RESET
7.2V
Delay
10 µs
R
SQ
Internal
BIAS
UVLO
13.4V/10V
FM/SS 2
PWM OSC
RQ
S
CV/CC
OCP
Feedback
Control
Soft Start
OLP
Frequency
Modulation
Istartup
=1.1mA
Drive
LEB
8D
7D
1 S/OCP
FB/CC
4 /OLP
3 GND
Number
1
2
3
Name
S/OCP
FM/SS
GND
Description
Source/OCP terminal
FM/Soft start terminal
Ground terminal
4 FB /CC/OLP FB/CC/OLP terminal
5
VCC
Power supply terminal
7
D Drain terminals
8
Functions
MOSFET Source/Overcurrent
protection
Capacitor connection terminal for
frequency jitter and soft start.
Ground
Input of constant voltage control
signal / constant current operation
control signal / over load protection
signal
Input of power supply for control
circuit
MOSFET drain / Input of startup
current
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036
2
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제조업체: Sanken Electric
( sanken )
STR-A6252M regulator
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[ STR-A6252M.PDF ]
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국내 전력반도체 판매점
상호 : 아이지 인터내셔날
전화번호 : 051-319-2877
[ 홈페이지 ]
IGBT, TR 모듈, SCR, 다이오드모듈, 각종 전력 휴즈
( IYXS, Powerex, Toshiba, Fuji, Bussmann, Eaton )
전력반도체 문의 : 010-3582-2743
관련 데이터시트
STR-A6252
(STR-A6251/-A6252) Universal-Input/15 W 50 kHz Flyback Switching Regulators - Allegro MicroSystems
STR-A6252M
Universal-Input 20 W 67 kHz Flyback Switching Regulators - Sanken Electric