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SG1526BJ/DESC

Description
Switching Controller, Voltage-mode, 0.2A, 500kHz Switching Freq-Max, CDIP18, CERAMIC, DIP-18
CategoryPower/power management    The power supply circuit   
File Size209KB,9 Pages
ManufacturerLinfinity Microelectronics
Download Datasheet Parametric View All

SG1526BJ/DESC Overview

Switching Controller, Voltage-mode, 0.2A, 500kHz Switching Freq-Max, CDIP18, CERAMIC, DIP-18

SG1526BJ/DESC Parametric

Parameter NameAttribute value
MakerLinfinity Microelectronics
package instructionCERAMIC, DIP-18
Reach Compliance Codeunknown
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeVOLTAGE-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage35 V
Minimum input voltage8 V
Nominal input voltage15 V
JESD-30 codeR-CDIP-T18
Number of functions1
Number of terminals18
Maximum operating temperature125 °C
Minimum operating temperature-55 °C
Maximum output current0.2 A
Package body materialCERAMIC, METAL-SEALED COFIRED
Package shapeRECTANGULAR
Package formIN-LINE
Certification statusNot Qualified
surface mountNO
Switch configurationPUSH-PULL
Maximum switching frequency500 kHz
Temperature levelMILITARY
Terminal formTHROUGH-HOLE
Terminal locationDUAL
SG1526B/SG2526B/SG3526B
REGULATING PULSE WIDTH MODULATOR
DESCRIPTION
The SG1526B is a high-performance pulse width modulator for switching
power supplies which offers improved functional and electrical characteris-
tics over the industry-standard SG1526. A direct pin-for-pin replacement for
the earlier device with all its features, it incorporates the following enhance-
ments: a bandgap reference circuit for improved regulation and drift
characteristics, improved undervoltage lockout, lower temperature coeffi-
cients on oscillator frequency and current-sense threshold, tighter toler-
ance on softstart time, much faster SHUTDOWN response, improved
double-pulse supperession logic for higher speed operation, and an im-
proved output driver design with low shoot-through current, and faster rise
and fall times. This versatile device can be used to implement single-ended
or push-pull switching regulators of either polarity, both transformer-less
and transformer-coupled. The SG1526B is specified for operation over the
full military ambient temperature range of -55°C to 150°C. The SG2526B
is characterized for the industrial range of -25°C to 150°C, and the SG3526B
is designed for the commercial range of 0°C to 125°C.
FEATURES
8 to 35 volt operation
5V low drift 1% bandgap reference
1Hz to 500KHz oscillator range
Dual 100mA source/sink
Digital current limiting
Double pulse suppression
Programmable deadtime
Improved undervoltage lockout
Single pulse metering
Programmable soft-start
Wide current limit common mode range
TTL/CMOS compatible logic ports
Symmetry correction capability
Guaranteed 6 unit synchronization
Shoot thru currents less than 100mA
Improved shutdown delay
Improved rise and fall time
HIGH RELIABILITY FEATURES - SG1526B
Available to MIL-STD-883
MIL-M38510/12603BVA - JAN1526BJ
Radiation data available
LMI level "S" processing available
BLOCK DIAGRAM
V
REF
+V
IN
GROUND
R
D
R
T
C
T
Reference
Regulator
Undervoltage
Lockout
+V
C
To Internal
Circuitry
Oscillator
SYNC
OUTPUT A
RESET
C
SOFTSTART
COMPENSATION
+ ERROR
Soft
Start
+V
IN
S
Amp
D
Q
METERING
F/F
Q
S
T
R
Q
Q
Q
TOGGLE
F/F
OUTPUT B
MEMORY
F/F
— ERROR
+ C.S.
— C.S.
SHUTDOWN
4/90 Rev 1.1 2/94
Copyright
©
1994
1
11861 Western Avenue
Garden Grove, CA 92841
(714) 898-8121
FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
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