UC1907, UC2907, UC3907

LOAD SHARE CONTROLLER

SLUS165C – MARCH 1999 - REVISED JANUARY 2002

3

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85

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Voltage Amp Section

Inp t oltage

COMP = 1 V,

TA = 25°C

1.975

2.000

2.025

V

Input voltage

COMP = 1 V,

over temp

1.960

2.000

2.040

V

Line regulation

VIN = 4.5 V to 35 V

15

mV

Load regulation

IL reference = 0.0 mA to –10 mA

10

mV

Long term stability

TA = 125°C,

1000hrs See Note 2

5

25

mV

Total output variation

Line, load, temp

1.960

2.040

Input adjust range

ADJ OUT from max high to max low

85

100

115

mV

Input bias current

–1

µA

Open loop gain

COMP = 0.75 V to 1.5 V

65

dB

Unity gain bandwidth

TA = 25°C

See Note 2

700

kHz

Output sink current

(+) SENSE = 2.2 V,

COMP = 1 V

6

15

mA

Output source current

(+) SENSE = 1.8 V,

COMP = 1 V

400

600

µA

VOUT high

(+) SENSE = 1.8 V,

IL = –400 µΑ

1.85

2

V

VOUT low

(+) SENSE = 2.2 V,

IL = 1 mA

0.15

0.40

V

Reference Section

O tp t oltage

TA = 25°C

1.970

2.000

2.030

V

Output voltage

Over operating temp

1.955

2.000

2.045

V

Short circuit current

VREF = 0.0 V

–15

–30

–60

mA

Ground Amp Section

Output voltage

200

250

300

mV

Common mode variation

(–) SENSE from 0.0 V to 2 V

5

mV

Load reg lation

IL = 0.0 mA to 20 mA,

TA = 25°C

10

mV

Load regulation

IL = 0.0 mA to 20 mA,

over temp

15

mV

Adjust Amp Section

Input offset voltage

ADJ OUT = 1.5 V, VCM = 0.0 V

40

50

60

mV

Input bias current

–2

µA

Open loop gain

1.5 V

≤ ADJ OUT ≤ 2.25 V

65

dB

Unity gain bandwidth

TA = 25°C,

COUT =1 µF

See Note 2

500

Hz

Transconductance

IOUT = –10 µA to 10 µA,

VOUT = 1.5 V

1.7

3

4.5

ms

Output sink current

VID = 0.0 V,

ADJ OUT = 1.5 V

55

135

225

µA

Output source current

VID = 250 mV,

ADJ OUT = 1.5 V

110

200

350

µA

VOUT high

VID = 250 mV,

IOUT = – 50 mA

2.20

2.70

2.90

V

VOUT low

VID = 0.0 V,

IOUT = 50 mA

0.75

1.15

V

Common mode rejection ratio

VCM = 0.0 to 10 V

70

dB

Output gain to V/A

VOUT ADJ OUT = 1.5 V to 2 V,

∆(+) SENSE/ ∆ADJ OUT

50

57

64

mV/V

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.