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SG3846N Datasheet(PDF) 2 Page - Microsemi Corporation

Part # SG3846N
Description  CURRENT MODE PWM CONTROLLER
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

SG3846N Datasheet(HTML) 2 Page - Microsemi Corporation

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SG1846
Rev 1.1a
Copyright
© 1994
11861 Western Avenue
∞ Garden Grove, CA 92841
2
(714) 898-8121
∞ FAX: (714) 893-2570
ABSOLUTE MAXIMUM RATINGS (Note 1 and 2)
Sync Output Current ........................................................... 5mA
Error Amplifier Output Current ............................................ 5mA
Oscillator Charging current (Pin 9) ..................................... 5mA
Operating Junction Temperature
Hermetic (J, L, F Packages) ........................................ 150°C
Plastic (N, DW Package) ............................................. 150°C
Storage Temperature Range ............................ -65°C to 150°C
Lead Temperature (Soldering, 10 Seconds) .................. 300°C
Supply Voltage (+V
IN ) .......................................................... 40V
Collector Supply Voltage(V
C) .............................................. 40V
Analog Inputs (Pins 3, 4, 5, 6, & 16) ...................... -0.3V to +V
IN
Logic Input ........................................................... -0.3V to 5.5V
Soure/Sink Load current (continuous) .......................... 200mA
Source/Sink Load Current (peak, 200ns) ...................... 500mA
Reference Load Current .................................................. 30mA
Soft Start Sink Current ..................................................... 50mA
Note 1. Values beyond which damage may occur.
Note 2. Pin numbers refer to ceramic J package.
THERMAL DATA
J Package:
Thermal Resistance-Junction to Case,
θ
JC ..................
30°C/W
Thermal Resistance-Junction to Ambient,
θ
JA .............. 80°C/W
N Package:
Thermal Resistance-Junction to Case,
θ
JC ..................
40°C/W
Thermal Resistance-Junction to Ambient,
θ
JA .............
65°C/W
DW Package:
Thermal Resistance-Junction to Case,
θ
JC ................... 40°C/W
Thermal Resistance-Junction to Ambient,
θ
JA .............
95°C/W
F Package:
Thermal Resistance-Junction to Case,
θ
JC ..................
70°C/W
Thermal Resistance-Junction to Ambient,
θ
JA ...........
115°C/W
L Package:
Thermal Resistance-Junction to Case,
θ
JC ..................
35°C/W
Thermal Resistance-Junction to Ambient,
θ
JA ...........
120°C/W
Note A. Junction Temperature Calculation: T
J
= T
A
+ (P
D
x
θ
JA
).
Note B. The above numbers for
θ
JC are maximums for the limiting
thermal resistance of the package in a standard mount-
ing configuration. The
θ
JA numbers are meant to be
guidelines for the thermal performance of the device/pc-
board system. All of the above assume no ambient
airflow.
5.10
5
3
0.4
100
5
-45
Reference Section
T
J = 25°C, IO = 1mA
V
IN = 8V to 40V
I
L = 1mA to 10mA
Line, Load and Temperature
10Hz
≤ f ≤ 10KHz. T
J = 25°C
T
J = 125°C, 1000Hrs.
V
REF = 0V
5.05
5.00
-10
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 4)
Total Output Variation (Note 4)
Output Noise Voltage (Note 4)
Long Term Stability (Note 4)
Short Circuit Output Current
Oscillator Timing Resistor (R
T) ........................... 2KΩ to 100KΩ
Oscillator Timing Capacitor (C
T) .................... 1000 pF to 0.1µF
Operating Ambient Temperature Range
SG1846 ........................................................... -55°C to 125°C
SG2846 ............................................................. -25°C to 85°C
SG3846 ................................................................ 0°C to 70°C
Note 3. Range over which the device is functiona
l.
RECOMMENDED OPERATING CONDITIONS (Note 3)
Supply Voltage Range ............................................... 8V to 40V
Collector Supply Voltage Range ............................. 4.5V to 40V
Source/Sink Output Current (continuous) ...................... 100mA
Source/Sink Output Current (peak 200ns) .................... 200mA
Reference Load Current ........................................... 0 to 10mA
Oscillator Frequency Range ........................... 1KHz to 500KHz
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1846/SG1847 with -55
°C ≤ T
A ≤ 125°C, SG2846
with -25
°C ≤ T
A
85
°C, SG3846 with 0°C ≤ T
A
70
°C, +V
IN
= 15V. Low duty cycle pulse testing techniques are used which maintains junction and
case temperatures equal to the ambient temperature.)
Units
SG1846
SG2846
SG3846
Parameter
Test Conditions
5.15
20
15
5.20
5.00
4.95
-10
Min. Typ. Max.
Min. Typ. Max.
5.10
5
3
0.4
100
5
-45
5.20
20
15
5.25
V
mV
mV
mV/°C
V
µV
mV
mA
RoHS Peak Package Solder Reflow Temp. (40 sec. max. exp.) .. 260° (+0, -5)


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