Datasheet

UC1903
UC2903
UC3903
SLUS233A – OCTOBER 1999 – REVISED SEPTEMBER 2008 ........................................................................................................................................ www.ti.com
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise stated, these specifications apply for T
A
= – 55 ° C to +125 ° C for the UC1903; – 40 ° C to +85 ° C for the
UC2903; and 0 ° C to +70 ° C for the UC3903; +V
IN
= 15V; Sense Inputs (Pins 6 – 9 and Pin 15) = 2.5V; V
PIN
4 = 1.0V, T
A
= T
J
.
UC1903 / UC2903 UC3903
PARAMETER TEST CONDITIONS UNIT
MIN TYP MAX MIN TYP MAX
FAULT OUTPUTS ( OV, UV, AND POWER 0K)
Maximum Current V
OUT
= 2V 30 70 30 70 mA
Saturation Voltage I
OUT
= 12mA 0.25 0.40 0.25 0.40 V
Leakage Current V
OUT
= 40 V 3 25 3 25 µ A
SENSE 4 INVERTER
(3)
Input Offset Voltage 2 8 2 10 mV
Input Bias Current 0.1 2 0.1 4 µ A
Open Loop Gain 65 80 65 80 dB
PSRR +VIN = 8 to 40 V 65 100 65 100 dB
Unity Gain Frequency 1 1 MHz
Slew Rate 0.4 0.4 V/ µ s
Short Circuit Current T
J
= 2 ° C 40 40 mA
G.P. OP-AMP
(3)
Input Offset Voltage 1 5 1 8 mV
Input Bias Voltage 0.1 2 0.1 4 µ A
Input Offset Current 0.01 .5 0.01 1.0 µ A
Open Loop Gain 65 120 65 120 dB
CMRR V
CM
= 0 to +V
IN
= 2.0V 65 100 65 100 dB
PSRR +V
IN
= 8 to 40V 65 100 65 100 dB
Unity Gain Frequency 1 1 MHz
Slew Rate 0.4 0.4 V/ µ s
Short Circuit Current T
J
= 25 ° C 40 40 mA
(3) When either the G.P. OP-Amp, or the Sense 4 Inverter, are configured for sensing a negative supply voltage, the divider resistance at
the inverting input should be chosen such that the nominal divider current is ≤ 1.4mA. With the divider current at or below this level
possible latching of the circuit is avoided. Proper operation for currents at or below 1.4mA is 100% tested in production.
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Product Folder Link(s): UC1903 UC2903 UC3903