Datasheet

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SLUS165C – MARCH 1999 - REVISED JANUARY 2002
4
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electrical characteristics, these specifications apply for T
A
= –55°C to 125°C for UC1907, –40°C to
85°C for UC2907, and 0°C to 70°C for UC3907, V
IN
= 15 V, T
A
= T
J
(unless otherwise stated )
PARAMETER TEST CONDITIONS MIN TYP MAX UNITS
Current Amp Section
Gain V
CM
= 0.0 V, V
ID
= 50 mV to 100 mV 19.2 19.6 20.1 V/V
O tp t oltage
V
C/S
(+) = V
C/S
(–) = 0.0 V, T
A
= 25°C 210 250 290 mV
Output voltage
V
C/S
(+) = V
C/S
(–) = 0.0 V, over temp 180 250 330 mV
Input offset change with common mode
input
V
CM
= 0 V to 13 V 600 µV/V
V
OUT
high V
ID
= 1 V 10 14.5 V
V
OUT
low V
ID
= – 1 V, I
L
= 1 mA 350 450 mV
Power supply rejection ratio V
IN
= 4.5 V to 35 V, V
CM
= 0.0 V 60 dB
Slew rate 0.4 V/µs
Drive Amp Section R
SET
= 500 Ω to Artificial GND, Opto Drive = 15 V
Voltage gain COMP = 0.5 V to 1 V 2.3 2.5 2.6 V/V
I
SET
V
OUT
high (+) SENSE = 2.2 V 3.8 4.1 4.4 V
I
SET
V
OUT
low (+) SENSE = 1.8 V 270 300 mV
Opto out voltage range 4 35 V
Zero current input threshold 1.55 1.65 1.75 V
Buffer Amp Section
Input offset voltage Input = 1 V 5 mV
Output off impedance Input = 1 V, output = 1.5 V to 2 V 5 10 20 kΩ
Output source current Input = 1 V, output = 0.5 V 6 15 mA
Common mode rejection ratio V
CM
= 0.3 V to 10 V 70 dB
Power supply rejection ratio V
IN
= 4.5 V to 35 V 70 dB
Under Voltage Lockout Section
Startup threshold 3.7 4.4 V
Threshold hysteresis 200 mV
Status Indicate Section
V
OUT
low ADJ OUT = current share bus 0.2 0.5 V
Output leakage ADJ OUT = 1 V, V
OUT
= 35 V 0.1 5 µA
Total Stand by Current Section
Startup current V
IN
= UVLO – 0.2 V 3 5 mA
Operating current V
IN
= 35 V 6 10 mA
NOTE 1: Unless otherwise specified all voltages are with respect to (–) SENSE. Currents are positive into, negative out of the specified terminal.
NOTE 2: Ensured by design. Not production tested.