SG1731/SG2731/SG3731
4/90 Rev 1.3 9/99
Copyright
1999
L
IN
F
IN
ITY
Microelectronics Inc.
Garden
Grove,
FAX: (714) 893-2570
11861 Western Avenue
∞
CA
92841
2
(714) 898-8121
∞
ABSOLUTE MAXIMUM RATINGS
(Note1)
Supply Voltage (±V
) ........................................................
±
18V
Analog Inputs.......................................................................
±
V
S
Digital Inputs (SHUTDOWN) .................... -V
-0.3V to -V
S
+18V
Output Driver Supply Voltage (
±
V
) .................................
±
25V
Source/Sink Output Current (continuous) .................... 200mA
Source/Sink Output Current (peak, 500ns) .................. 400mA
Note 1. Values beyond which damage may occur.
THERMAL DATA
Output Driver Diode Current (continuous) .................... 200mA
Output Driver Diode Current (peak, 500ns) .................. 400mA
Operating Junction Temperature
Hermetic (J - Package) ............................................... 150
°
C
Plastic (N - Package) .................................................. 150
°
C
Storage Temperature Range............................ -65°C to 150
°
C
Lead Temperature (Soldering, 10 Seconds) .................. 300
°
C
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
Note A.
Note B. The above numbers for
θ
are maximums for the limiting thermal
resistance of the package in a standard mounting configuration.
The
θ
numbers are meant to be guidelines for the thermal
performance of the device/pc-board system. All of the above
assume no ambient airflow.
Junction Temperature Calculation: T
= T
+ (P
x
θ
).
Oscillator Frequency Range ........................... 10Hz to 350KHz
Oscillator Voltage (Peak-to-Peak) .............................1V to 10V
Oscillator Timing Capacitor (C
) ....................... 200pF to 2.5
μ
F
Operating Ambient Temperature Range
SG1731 ........................................................ -55
°
C to 125
°
C
SG2731 ........................................................... -25
°
C to 85
°
C
SG3731 .............................................................. 0
°
C to 70
°
C
Supply Voltage Range (±V
)...............................
±
3.5V to
±
15V
Error Amp Common-Mode Range ............... -V
S
+ 3V to V
S
- 3V
Output Driver Supply Voltage Range..................
±
2.5V to
±
22V
Source/Sink Output Current (continuous) .................... 100mA
Source/Sink Output Current (peak, 500ns) .................. 200mA
Output Driver Diode Current (continuous) .................... 100mA
Output Driver Diode Current (peak, 500ns) .................. 200mA
Note 2. Range over which the device is functional and parameter limits are guaranteed.
RECOMMENDED OPERATING CONDITIONS
(Note 2)
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, these specfiications apply over the operating ambient temperatures for SG1731 with -55
°
C
≤
T
≤
125
°
C, SG2731 with
-25
°
C
≤
T
≤
85
°
C, SG3731 with 0
°
C
≤
T
≤
70
°
C, V
=
±
15V, and V
O
=
±
22V. Low duty cycle pulse testing techniques are used which maintains junction
and case temperatures equal to the ambient temperature.)
SG1731/2731/3731
Min.
Typ. Max.
Parameter
Units
Test Conditions
C
T
Charging Current
2V
±
Input Bias Current
Initial Oscillator Frequency
Temperature Stability
(Note 3)
Error Amplifier Section
(Note 5)
Oscillator Section
T
A
= 25
°
C
T
A
= T
MIN
to T
MAX
V
CM
=
±
5V
C
T
= 1000pF, 2V
±
=
±
5V,T
A
= 25
°
C
C
T
= 1000pF, 2V
±
=
±
5V
500
25.0
550
600
-20
27.5
10
450
400
22.5
μ
A
μ
A
μ
A
KHz
%
mV
μ
A
nA
dB
V
dB
V/
μ
s
MHz
10
1
10
3
600
70
±10
70
5
0.7
R
L
= 2K
R
L
= 2K
T
A
= 25
°
C
T
A
= 25
°
C
Input Offset Voltage
Input Bias Current
Input Offset Current
Open Loop Voltage Gain
Output Voltage Swing
Common-Mode Rejection Ratio
Slew Rate
(Notes 3 and 4)
Unity Gain Bandwidth
(Notes 3 and 4)
PWM Comparators
Input Bias Current
6
μ
A
±
V
T
=
±
3V