Data Sheet

ADP2503/ADP2504

Rev. D | Page 3 of 16

SPECIFICATIONS

unless otherwise noted.1

Table 1.

Parameters

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Input Voltage Range

2.3

5.5

V

Undervoltage Lockout Threshold

2.15

2.20

2.25

V

2.10

2.14

2.20

V

OUTPUT CHARACTERISTICS

Output Voltage Range

2.8

5.5

V

Feedback Impedance

450

kΩ

Feedback Voltage

ADP2503/ADP2504 adjustable output (PWM operation, no load)

490

500

510

mV

Output Voltage Initial Accuracy

ADP2503/ADP2504 fixed output (PWM operation, no load)

−2

+2

%

Load and Line Regulation

0.5

%

0.6

%

CURRENT CHARACTERISTICS

38

50

μA

Shutdown Current

0.2

1

μA

SWITCH CHARACTERISTICS

N-Channel Switches

150

mΩ

P-Channel Switches

150

mΩ

P-Channel Leakage

1

μA

Switch Current Limit

ADP2504

1.3

2.0

A

ADP2503

1.0

1.4

A

Reverse Current Limit

1.1

A

OSCILLATOR AND STARTUP

Oscillator Frequency

2.1

2.5

2.9

MHz

On Time PMOS1 (Buck Mode)

Minimum duty cycle = 30%

130

ns

On Time NMOS2 (Boost Mode)

Maximum duty cycle = 50% (×2)

200

ns

SYNC Clock Frequency

2.2

2.8

MHz

SYNC Clock Minimum Off Time

160

ns

LOGIC LEVEL CHARACTERISTICS

EN, SYNC Input High Threshold

1.2

V

EN, SYNC Input Low Threshold

0.4

V

EN, SYNC Leakage Current

−1

+0.1

+1

μA

THERMAL CHARACTERISTICS

Thermal Shutdown Threshold

150

°C

Thermal Shutdown Hysteresis

25

°C