Data Sheet

ADP5003

Rev. A | Page 5 of 31

BUCK REGULATOR SPECIFICATIONS

specifications, unless otherwise noted.

Table 2.

Parameter

Symbol

Min

Typ

Max

Unit Test Conditions/Comments

OUTPUT CHARACTERISTICS

0.6

5.0

V

Buck Regulator Gain

2.5

Error Amplifier Transconductance

509

600

661

µS

−1

+1

%

Regulation

Line

0.004

%/V

Load

0.04

%/A

Total Output Voltage Accuracy

±1.5

%

OPERATING SUPPLY CURRENT

3.8

mA

switching

SW1 CHARACTERISTICS

SW1 On Resistance

130

200

mΩ

60

100

mΩ

Current Limit Threshold

3.5

A

Negative channel field effect

transistor (NFET) switch valley

current limit

−1

A

Negative current limit

Slew Rate

1.6

V/ns

35

ns

Minimum Off Time

100

128

ns

BUCK REGULATOR ACTIVE PULL DOWN

90

Ω

Channel disabled

BUCK REGULATOR SOFT START (SS)

2

ms

HICCUPTIME

33

ms

VSETxADJUSTABLE INPUT BIAS CURRENT

10

150

nA

OSCILLATOR

Internal Switching Frequency 1

2.25

2.5

2.75

MHz

Internal Switching Frequency 2

0.26

0.3

0.34

MHz

SYNC

Frequency Range

0.3

2.5

MHz

Minimum Pulse Width

Positive

20

ns

Negative

10

ns

1

The switching frequency, minimum on time, and minimum off time may limit the output voltage range.

2

The buck output voltage accuracy is relative to the nominal output voltage and accounts for reference voltage, gain, and offset error.

3

The minimum on time indicates the minimum high-side turn on time to ensure fixed frequency switching.