UCC28811 datasheet(4/31 Pages) TI

4 / 31 page

ELECTRICAL CHARACTERISTICS

UCC28810

UCC28811

SLUS865 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com

–40°C

≤ TA = TJ ≤ 105°C, VVDD = 12 VDC, CGDRV = 0.1-µF from VDD to GND, all voltages are with respect to GND.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY

VVDD

Operating voltage

Shunt voltage

IVDD = 25 mA

Supply current, off

VVDD = VVDD turn-on threshold –300 mV

125

µA

Supply current, disabled

VVSENSE = 0.5 V

IVDD

Supply current, on

75 kHz, CGDRV = 0 nF

Supply current, dynamic operating

75 kHz, CGDRV = 1 nF

UVLO

UCC28810

15.4

15.8

16.4

VDD turn-on threshold

UCC28811

12.0

12.5

13.0

VDD turn-off threshold

9.4

9.7

10.0

UCC28810

5.8

6.3

6.8

VUVLO

UVLO hysteresis

UCC28811

2.3

2.8

3.3

VOLTAGE AMPLIFIER (VSENSE)

VREF

Internal voltage reference

2.45

2.50

2.55

IBIAS

Input bias current

0.5

µA

EAOUT high

VVSENSE = 2.1 V

4.5

5.5

EAOUT low

VVSENSE = 2.55 V

1.80

2.45

Transconductance

TJ = 25°C, VEAOUT = 3.5 V

130

µS

UCC28810

–0.2

–1.0

IEAOUT,SRC Source current

VVSENSE = 2.1 V, VEAOUT = 3.5 V

UCC28811

–200

–300

–400

µA

IEAOUT,SNK Sink current

VVSENSE = 2.1 V, VEAOUT = 3.5 V

0.2

1.0

OVERVOLTAGE PROTECTION / ENABLE (VSENSE)

VVREF+

VVREF

UCC28810

0.165

+0.190

+0.210

VOV(ref)

Overvoltage reference

VVREF+

UCC28811

0.150

0.180

0.210

UCC28810

175

200

225

Hysteresis

UCC28811

150

180

210

UCC28810

0.62

0.67

0.72

Enable threshold

UCC28811

0.18

0.23

0.28

Enable hysteresis

0.05

0.10

0.20

CURRENT REFERENCE GENERATOR

Current reference generator gain constant

VVINS = 0.5 V, VEAOUT = 3.5 V

0.43

0.65

0.87

1/V

Dynamic input range, VVINS INPUT

0 to 2.5

0 to 3.5

2.5 to

VEAOUT

Error amplifier dynamic input range

3.8

4.0

Input bias current, VINS

0.1

1.0

µA

Submit Documentation Feedback

Product Folder Link(s): UCC28810 UCC28811

UCC28811 Datasheet(PDF) 4 Page - Texas Instruments

UCC28811 Datasheet(HTML) 4 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Datasheet Download

Link URL