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SG1825CJ/883B

Description
SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16
Categorysemiconductor    Analog mixed-signal IC   
File Size323KB,14 Pages
ManufacturerMicrosemi
Websitehttps://www.microsemi.com
Download Datasheet Parametric View All

SG1825CJ/883B Overview

SWITCHING CONTROLLER, 1500 kHz SWITCHING FREQ-MAX, CDIP16

SG1825CJ/883B Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals16
Rated input voltage15 V
Maximum limit input voltage30 V
Minimum limit input voltage10 V
Maximum operating temperature70 Cel
Minimum operating temperature0.0 Cel
Processing package descriptionHERMETIC SEALED, CERAMIC, DIP-16
stateACTIVE
packaging shapeRECTANGULAR
Package SizeIN-LINE
Terminal formTHROUGH-HOLE
terminal coatingTIN LEAD
Terminal locationDUAL
Packaging MaterialsCERAMIC, METAL-SEALED COFIRED
Temperature levelCOMMERCIAL
control modePEAK CURRENT
Control TechnologyPULSE WIDTH MODULATION
Analog IC other typesSWITCHING CONTROLLER
Rated regulated voltage5.1 V
Switch configurationPUSH-PULL
Maximum switching frequency1500 kHz
SG1825C
High Speed Current Mode PWM
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, micro power 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
temperature range of -55°C to 125°C.
Features
Improved Reference Initial Tolerance (±1% max.)
Improved Oscillator Initial Accuracy (±3% typ.)
Improved Startup Current (500μA typ.)
Propagation Delay to Outputs (50ns typ.)
10V to 30V Operation
5.1V Reference Trimmed to ±1%
2MHz Oscillator Capability
1.5A Peak Totem-Pole Drivers
U.V. Lockout with Hysteresis
No Output Driver “FLOAT”
Programmable Softstart
Double-Pulse Suppression Logic
Wideband Low-Impedance Error Amplifier
Current-Mode or Voltage-Mode Control
High Reliability Features
Available To MIL-STD-883 – 883, ¶ 1.2.1
Available to DSCC
– Standard Microcircuit Drawing (SMD)
SGR1825C Rad-Tolerant Version Available
Product Highlight
15
Sample Size = 279
Mean 401.661
Std. Dev. = 3.8
Percentage of Units - %
10
5
0
390
395
400
405
410
415
Initial Oscillator Accuracy - kHz
Figure 1 ·
Product Highlight
November 2014 Rev. 1.4
www.microsemi.com
© 2014 Microsemi Corporation- Analog Mixed Signal Group
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