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SG2825CJ

Description
2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16
CategoryPower/power management    The power supply circuit   
File Size187KB,7 Pages
ManufacturerMicrosemi
Websitehttps://www.microsemi.com
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SG2825CJ Overview

2 A SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16

SG2825CJ Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMicrosemi
Parts packaging codeDIP
package instructionHERMETIC SEALED, CERAMIC, DIP-16
Contacts16
Reach Compliance Code_compli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage30 V
Minimum input voltage10 V
Nominal input voltage15 V
JESD-30 codeR-CDIP-T16
JESD-609 codee0
length19.62 mm
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-25 °C
Maximum output current0.2 A
Nominal output voltage5.1 V
Package body materialCERAMIC, METAL-SEALED COFIRED
encapsulated codeDIP
Encapsulate equivalent codeDIP16,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
Certification statusNot Qualified
Maximum seat height5.08 mm
surface mountNO
Switch configurationPUSH-PULL
Maximum switching frequency1500 kHz
technologyBIPOLAR
Temperature levelOTHER
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
width7.62 mm
LIN D
O C
#:
1825
SG1825C/SG2825C/SG3825C
H
IGH
-S
PEED
C
URRENT
-M
ODE
PWM
T
H E
I
N F I N I T E
P
O W E R
O F
I
N N O V A T I O N
N
OT
R
ECOMMENDED
FOR
N
EW
D
ESIGNS
DESCRIPTION
The SG1825C is a high-performance
pulse width modulator optimized for
high frequency current-mode power
supplies. Included in the controller
are a precision voltage reference,
micropower start-up circuitry, soft-
start, high-frequency oscillator,
wideband error amplifier, fast current-
limit comparator, full double-pulse
suppression logic, and dual totem-
pole output drivers. Innovative
circuit design and an advanced linear
Schottky process result in very short
propagation delays through the
current limit comparator, logic, and
output drivers. This device can be
used to implement either current-
mode or voltage-mode switching
power supplies. It also is useful as
a series-resonant controller to
frequencies beyond 1MHz. The
SG1825C is specified for operation
over the full military ambient tem-
perature range of -55°C to 125°C.
The SG2825C is characterized for the
industrial range of -25°C to 85°C,
and the SG3825C is selected for the
commercial range of 0°C to 70°C.
K E Y F E AT U R E S
s
IMPROVED REFERENCE INITIAL
TOLERANCE
(±1% max.)
s
IMPROVED OSCILLATOR INITIAL
ACCURACY
(±3% typ.)
s
IMPROVED STARTUP CURRENT
(500µA typ.)
s
PROP DELAY TO OUTPUTS
(50ns typ.)
p
10V TO 30V OPERATION
p
5.1V REFERENCE TRIMMED TO ±1%
p
2MHZ OSCILLATOR CAPABILITY
p
1.5A PEAK TOTEM-POLE DRIVERS
p
U.V. LOCKOUT WITH HYSTERESIS
p
NO OUTPUT DRIVER "FLOAT"
p
PROGRAMMABLE SOFTSTART
p
DOUBLE-PULSE SUPPRESSION LOGIC
p
WIDEBAND LOW-IMPEDANCE ERROR
AMPLIFIER
p
CURRENT-MODE OR VOLTAGE-MODE
CONTROL
p
WIDE CHOICE OF HIGH-FREQUENCY
PACKAGES
PRODUCT HIGHLIGHT
I
N I T I A L
O
S C I L L AT O R
A
C C U R A C Y
15
Percentage of Units - %
Sample Size = 45
279
Mean 411.887
401.661
Std. Dev. = 4.3
3.8
HIGH RELIABILITY FEATURES
s
AVAILABLE TO MIL-STD-883B
s
LINFINITY LEVEL "S" PROCESSING AVAIL.
10
5
0
390
395
400
405
410
415
Initial Oscillator Accuracy - KHz
PACKAGE ORDER INFORMATION
T
J
(°C)
0 to 70
-25 to 85
-55 to 125
MIL-STD-883
DESC
N
Plastic DIP
16-pin
SG3825CN
SG2825CN
—
—
—
DW
Plastic Wide SOIC
Q
Plastic LCC
16-pin
20-pin
SG3825CDW
SG2825CDW
—
—
—
SG3825CQ
SG2825CQ
—
—
—
J
Ceramic DIP
16-pin
SG3825CJ
SG2825CJ
SG1825CJ
SG1825CJ/883B
SG1825CJ/DESC
L
Ceramic LCC
20-pin
—
—
SG1825CL
SG1825CL/883B
SG1825CL/DESC
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. SG3825CDWT)
FOR FURTHER INFORMATION CALL (714) 898-8121
Copyright © 1994
Rev. 1.3 6/96
11861 W
ESTERN
A
VENUE
, G
ARDEN
G
ROVE
, CA. 92841
1

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