UC2854BEP

SGLS318 − NOVEMBER 2005

4

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ELECTRICAL CHARACTERISTICS

VCC = 18 V, RT = 8.2 kΩ, CT = 1.5 nF, VPKLMT = 1 V, VVRMS = 1.5 V, IIAC = 100 µA, IISENSE = 0 V, VCAO = 3.5 V, VVAO = 5 V, VVSENSE = 3 V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

OVERALL

Supply current, off

CAO = 0 V,

VAO = 0 V,

VCC = VUVLO−0.3 V

250

400

µA

Supply current, on

12

18

mA

VCC turn-on threshold voltage

8

10.5

11.2

VCC turn-off threshold voltage

9

10

12

V

VCC clamp

IVCC = IVCC(on) + 5 mA

18

20

22

V

VOLTAGE AMPLIFIER

Input voltage

2.9

3

3.1

V

VSENSE bias current

−500

−25

500

nA

Open loop gain

2 V

≤ VOUT ≤ 5 V

70

100

dB

VOH

High-level output voltage

ILOAD = −500 µA

6

V

VOL

Low-level output voltage

ILOAD = 500 µA

0.3

0.5

V

ISC

Output short-circuit current

VOUT = 0 V

1.5

3.5

mA

Gain bandwidth product(1)

fIN = 100 kHz, 10 mVP−P

1

MHz

CURRENT AMPLIFIER

Input offset voltage

VCM = 0 V, TA = 25°C

−4

0

mV

Input offset voltage

VCM = 0 V, overtemperature

−5.5

0

mV

Input bias current, ISENSE

VCM = 0 V

−500

500

nA

Open loop gain

2 V

≤ VOUT ≤ 6 V

80

110

dB

VOH

High-level output voltage

ILOAD = −500 µA

8

V

VOL

Low-level output voltage

ILOAD = 500 µA

0.3

0.5

V

ISC

Output short-circuit current

VOUT = 0 V

1.5

3.5

mA

CMRR

Common mode rejection range

−0.3

5

V

Gain bandwidth product(1)

fIN = 100 kHz, 10 mVP−P

3

5

MHz

REFERENCE

Output voltage

IREF = 0 mA, TA = 25°C

7.4

7.5

7.6

V

Output voltage

IREF = 0 mA

7.35

7.5

7.65

V

Load regulation

1 mA

≤ IREF ≤ 10 mA

0

8

20

mV

Line regulation

12 V

≤ VCC ≤ 18 V

0

14

25

mV

ISC

Short circuit current

VREF = 0 V

25

35

60

mA

(1) Ensured by design. Not production tested.

(2) Gain constant. (K) +

I

IAC

V

VAO *

1.5 V

V

VRMS

2

I

MOUT