Datasheet

UC1637
UC2637
UC3637
PACKAGE PIN
FUNCTION
FUNCTION PIN
+V
TH
1
C
T
2
-V
TH
3
A
OUT
4
-V
S
5
N/C 6
+V
S
7
B
OUT
8
+B
IN
9
-B
IN
10
-A
IN
11
+A
IN
12
+C/L 13
-C/L 14
SHUTDOWN 15
N/C 16
+E/A 17
-E/A 18
E/A
OUTPUT 19
I
SET
20
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages
ELECTRICAL CHARACTERISTICS:
PARAMETER TEST CONDITIONS UC1637/UC2637 UC3637 UNITS
MIN TYP MAX MIN TYP MAX
Oscillator
Initial Accuracy T
J
= 25°C (Note 6) 9.4 10 10.6 9 10 11 kHz
Voltage Stability V
S
=
±
5V to
±
20V, V
PIN 1
= 3V,
V
PIN 3
= -3V
57 57%
Temperature Stability Over Operating Range (Note 3) 0.5 2 0.5 2 %
+V
TH
Input Bias Current V
PIN 2
= 6V -10 0.1 10 -10 0.1 10
µ
A
-V
TH
Input Bias Current V
PIN 2
= 0V -10 -0.5 -10 -0.5
µ
A
+V
TH,
-V
TH
Input Range +V
S
-2 -V
S
+2 +V
S
-2 -V
S
+2 V
Error Amplifier
Input Offset Voltage V
CM
= 0V 1.5 5 1.5 10 mV
Input Bias Current V
CM
= 0V 0.5 5 0.5 5
µ
A
Input Offset Current V
CM
= 0V 0.1 1 0.1 1
µ
A
Common Mode Range V
S
=
±
2.5 to 20V -V
S
+2 +V
S
-V
S
+2 +V
S
V
Open Loop Voltage Gain R
L
= 10k 75 100 80 100 dB
Slew Rate 15 15 V/
µ
S
Unity Gain Bandwidth 2 2 MHz
CMRR Over Common Mode Range 75 100 75 100 dB
PSRR V
S
=
±
2.5 to
±
20V 75 110 75 110 dB
CONNECTION DIAGRAM
Unless otherwise stated, these specifications apply for T
A
= -55°C to +125°C for the
UC1637; -25°C to +85°C for the UC2637; and 0°C to +70°C for the UC3637; +V
S
=
+15V, -V
S
= - 15V, +V
TH
= 5V, -V
TH
= -5V, R
T
= 16.7k
, C
T
= 1500pF, T
A
=T
J.
DIL-18 (TOP VIEW)
J or N Package
SOIC-20 (TOP VIEW)
DW Package
2