UCC2941-3, UCC2941-5, UCC2941-ADJ, UCC3941-3, UCC3941-5, UCC3941-ADJ

1V SYNCHRONOUS BOOST CONVERTER

SLUS242B – JANUARY 1999 – REVISED JUNE 2001

5

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electrical characteristics over recommended operating junction temperature range, for UCC3941,

input voltage

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

TJ = 25_C,

No external VGD load,

IOUT = 100 mA,

See Note 1

0.8

1.0

V

Minumum startup voltage

TJ = 0_C to 85_C, No external VGD load,

IOUT = 100 mA,

See Note 1

0.9

1.1

V

TJ = –40_C to 0_C, No external VGD load,

IOUT = 100 mA,

See Note 1

0.9

1.5

V

Minumum dropout voltage

IOUT = 0 mA,

No external VGD load,

VGD = 6.3 V

0.5

V

Input voltage range

1

VOUT

+ 0.5

V

Quiescent supply current

See note 2

13

25

µA

Shutdown supply current

SD = open

8

20

µA

output voltage

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Quiescent supply current

See note 2

32

80

µA

Shutdown supply current

SD = open

6

15

µA

1 V < VIN < 3 V

3.18

3.25

3.37

V

Regulation voltage

UCC3941–3

1 V < VIN < 3 V,

0 mA < IOUT < 150 mA,

See Note 1

3.17

3.30

3.43

V

Regulation voltage

1 V < VIN < 5 V

4.85

5.00

5.15

V

UCC3941–5

1 V < VIN < 5 V,

0 mA < IOUT < 100 mA,

See Note 1

4.8

5.0

5.2

V

Feedback voltage

UCC3941–ADJ

1 V < VIN < 3 V

1.212

1.250

1.288

V

VGD output

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Quiescent supply current

See note 2

25

60

µA

Shutdown supply current

SD = open

8

20

µA

1 V < VIN < 3 V

7.5

8.7

9.2

V

Regulation voltage

1 V < VIN < 3 V,

0 mA < IOUT < 10 mA,

See Note 1

7.4

87

9.3

V

NOTE 1: Performance from application circuit shown in Figures 3, 4, and 5. Ensured by design. Not 100% production tested.

NOTE 2: For the UCC3941–3, VOUT = 3.47 V and VGD = 9.3 V. For the UCC3941–5, VOUT = 5.25 V, VGD = 9.3 V. For the UCC3941–ADJ,

FB = 1.315 V, VGD = 9.3 V.