ELECTRICAL CHARACTERISTICS

UCC28060

the specified terminal, unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VCC BIAS SUPPLY

22

24

26

V

VCC current, disabled

VSENSE = 0 V

100

200

µA

VCC current, enabled

VSENSE = 6 V

5

8

mA

UNDERVOLTAGE LOCKOUT (UVLO)

VCC turn-on threshold

11.5

12.6

13.5

V

VCC turn-off threshold

9.5

10.35

11.5

V

UVLO Hysteresis

1.85

2.25

2.65

V

REFERENCE

VREF output voltage, no load

5.82

6.00

6.18

V

VREF change with load

0 mA

1

6

mV

VREF change with VCC

12 V

≤ VCC ≤ 20 V

1

10

mV

ERROR AMPLIFIER

VSENSE input regulation voltage

5.85

6.00

6.15

V

VSENSE input regulation voltage

5.82

6.00

6.18

V

VSENSE input bias current

In regulation

125

300

800

nA

COMP high voltage, clamped

VSENSE = 5.8 V

4.70

4.95

5.10

V

COMP low voltage, saturated

VSENSE = 6.2 V

0.03

0.125

V

COMP = 3 V,

VSENSE to COMP transconductance

75

96

110

µS

5.94 V < VSENSE < 6.06 V

COMP source current, overdriven

VSENSE = 5 V, COMP = 3 V

–120

–160

–190

µA

COMP sink current

VSENSE = 6.4 V, COMP = 3 V

18

25

32

µA

VSENSE threshold for COMP offset enable, down

135

185

235

mV

VSENSE over-voltage threshold, rising

6.25

6.45

6.7

V

VSENSE over-voltage hysteresis

0.1

0.2

0.4

V

VSENSE enable threshold, rising

1.15

1.25

1.35

V

VSENSE enable hysteresis

0.02

0.05

0.2

V

OUTPUT MONITORING

HVSEN threshold to PWMCNTL

HVSEN rising

2.35

2.50

2.65

V

HVSEN input bias current, high

HVSEN = 3 V

–0.5

0.5

µA

HVSEN input bias current, low

HVSEN = 2 V

28

36

41

µA

HVSEN rising threshold to over-voltage fault

4.64

4.87

5.1

V

HVSEN falling threshold to over-voltage fault

4.45

4.67

4.80

V

PHB = 5 V,

Phase Fail filter time to PWMCNTL high

8

14

20

ms

ZCDA switching, ZCDB = 0.5 V

PWMCNTL leakage current high

HVSEN = 2 V, PWMCNTL = 15 V

–1

1

µA

PWMCNTL output voltage low

HVSENS = 3 V, IPWMCNTL = 5 mA

0.2

0.5

V

(1)

Excessive VCC input voltage and current will damage the device. This clamp does not protect the device from an unregulated supply. If

an unregulated supply is used, a Fixed Positive Voltage Regulator such as the UA78L15A is recommended. See the Absolute Maximum

Ratings table for the limits on VCC voltage and current.

4

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