UCC2817A, UCC2818A

UCC3817A, UCC3818A

SLUS577B − SEPTEMBER, 2003 − REVISED FEBRUARY 2006

3

www.ti.com

ABSOLUTE MAXIMUM RATINGS

UCCx81xA

UNIT

Supply voltage VCC

18

V

Supply current ICC

20

mA

Gate drive current, continuous

0.2

A

Gate drive current

1.2

A

Input voltage, CAI, MOUT, SS

8

Input voltage, PKLMT

5

V

Input voltage, VSENSE, OVP/EN

10

V

Input current, RT, IAC, PKLMT

10

mA

Input current, VCC (no switching)

20

mA

Maximum negative voltage, DRVOUT, PKLMT, MOUT

−0.5

V

Power dissipation

1

W

Junction temperature, TJ

−55 to 150

Storage temperature, Tstg

−65 to 150

°C

Lead temperature, Tsol (soldering, 10 seconds)

300

C

Power dissipation

1

W

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied.

Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

Supply Current Section

Supply current, off

VCC = (VCC turn-on threshold −0.3 V)

150

300

µA

Supply current, on

VCC = 12 V, No load on DRVOUT

2

4

6

mA

UVLO Section

VCC turn-on threshold (UCCx817)

15.4

16

16.6

VCC turn-off threshold (UCCx817)

9.4

9.7

UVLO hysteresis (UCCx817)

5.8

6.3

Maximum shunt voltage (UCCx817)

IVCC = 10 mA

15.4

17

17.5

V

VCC turn-on threshold (UCCx818)

9.7

10.2

10.8

V

VCC turn-off threshold (UCCx818)

9.4

9.7

UVLO hysteresis (UCCx818)

0.3

0.5

Voltage Amplifier Section

Input voltage

TA = 0°C to 70°C

7.387

7.5

7.613

V

Input voltage

TA = −40°C to 85°C

7.369

7.5

7.631

V

VSENSE bias current

VSENSE = VREF,

VAOUT = 2.5 V

50

200

nA

Open loop gain

VAOUT = 2 V to 5 V

50

90

dB

High-level output voltage

IL = −150 µA

5.3

5.5

5.6

V

Low-level output voltage

IL = 150 µA

0

50

150

mV