NCV8855

http://onsemi.com

8

150°C unless noted otherwise. Min/Max values are guaranteed by test, design or statistical correlation.

Parameter

Unit

Max

Typ

Min

Conditions

Symbol

SWITCH−MODE POWER SUPPLY CONTROLLER (SMPS1, VOUT1) SPECIFICATIONS

Error Amplifier

Dc gain

(Note 1)

70

85

dB

Gain−bandwidth product

(Note 1)

8

10

MHz

SW_FB1 input bias current

SW_FB1 = 0.8 V

100

nA

Input offset voltage

(Note 1)

800

mV

Slew rate

within ramp voltage levels (Note 1)

6

8

V/ms

COMP1 source current

1.5

8

mA

1.6

8

mA

COMP1 sink current

1.1

8

mA

0.7

8

mA

Minimum COMP1 voltage

1.05

V

Maximum COMP1 voltage

3.3

V

Ramp maximum voltage

2.8

3.0

3.2

V

Ramp minimum voltage

1.1

1.2

1.3

V

Ramp voltage amplitude

1.6

1.8

2.0

V

Duty Cycle Limitations

Minimum off time

GH1 falling to GL1 rising

80

140

200

ns

Minimum pulse width

GH1 rising to GH1 falling

120

250

300

ns

Gate Driver

GH1 source current

1.5

A

GH1 sink current

1.5

A

GL1 source current

1.5

A

GL1 sink current

1.5

A

SN1 falling to GL1 rising, non−overlap

time

30

70

ns

GL1 falling to GH1 rising, non−overlap

time

30

70

ns

SN1 falling non−overlap threshold

voltage

1.0

1.8

3.0

V

GL1 falling non−overlap threshold

voltage

2

V

SN1 falling override timer

50

100

150

ns

SWITCH−MODE POWER SUPPLY REGULATOR (SMPS2, VOUT2) SPECIFICATIONS

Over Current Protection

Internal current limit

2.5

3.05

4.2

A

Current limit blanking time

100

200

ns

Short circuit threshold voltage

SCTH2

75

85

95

%

Short circuit protection startup delay

SW_FB2 = 0.5 V

100

125

150

%

1. Guaranteed by design, not fully tested in production.

2. Indirectly guaranteed by test coverage of other parameters.