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MAX16977

36V, 2A, 2.2MHz Step-Down Converter

with Low Operating Current

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

OUTPUT VOLTAGE (OUT)

Output Voltage

4.925

5

5.075

V

Skip-Mode Output Voltage

4.925

5

5.15

V

Adjustable Output Voltage

Range

FB connected to external resistive divider

1

10

V

Load Regulation

0.5

%

Line Regulation

0.02

%/V

BST Input Current

1.5

2.5

mA

LX Current Limit

(Note 2)

2.4

3

4

A

Skip-Mode Threshold

300

mA

Spread Spectrum

Spread spectrum enabled

6

%

Power-Switch On-Resistance

70

150

mI

High-Side Switch Leakage

Current

1

F

A

TRANSCONDUCTANCE AMPLIFIER (COMP)

FB Input Current

10

nA

FB Regulation Voltage

FB connected to an external resistive

divider; 0

0.99

1.0

1.01

V

FB connected to an external resistive

divider; -40

0.985

1.0

1.015

FB Line Regulation

D

0.02

%/V

Transconductance (from FB to

COMP)

900

F

S

Minimum On-Time

80

ns

Maximum Duty Cycle

98

%

99

OSCILLATOR FREQUENCY

Oscillator Frequency

2.05

2.20

2.35

MHz

EXTERNAL CLOCK INPUT (FSYNC)

FSYNC Input Current

1

F

A

External Input Clock Acquisition

Time

1

Cycles

External Input Clock Frequency

(Note 2)

10%

Hz

External Input Clock

High Threshold

1.4

V