Data Sheet

ADP2109

Rev. B | Page 3 of 16

SPECIFICATIONS

otherwise noted.1

Table 1.

Parameters

Conditions

Min

Typ

Max

Unit

INPUT CHARACTERISTICS

Input Voltage Range

2.3

5.5

V

Undervoltage Lockout Threshold

2.3

V

2.05

2.15

2.25

V

OUTPUT CHARACTERISTICS

Output Voltage Accuracy

PWM mode

−2

+2

%

−2.5

+2.5

%

POWER SAVE MODE TO PWM CURRENT THRESHOLD

85

mA

PWM TO POWER SAVE MODE CURRENT THRESHOLD

80

mA

INPUT CURRENT CHARACTERISTICS

DC Operating Current

18

30

μA

Shutdown Current

0.2

1.0

μA

SW CHARACTERISTICS

SW On Resistance

PFET

320

mΩ

NFET

300

mΩ

Current Limit

PFET switch peak current limit

1100

1300

1500

mA

Discharge SW Resistance

150

Ω

ENABLE CHARACTERISTICS

EN Input High Threshold

1.2

V

EN Input Low Threshold

0.4

V

EN Input Leakage Current

EN = 0 V, 3.6 V

−1

0

+1

μA

OSCILLATOR FREQUENCY

2.5

3.0

3.5

MHz

START-UP TIME

550

μs

THERMAL CHARACTERISTICS

Thermal Shutdown Threshold

150

°C

Thermal Shutdown Hysteresis

20

°C

1

All limits at temperature extremes are guaranteed via correlation using standard statistical quality control (SQC).

INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS

Table 2.

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

MINIMUM INPUT AND OUTPUT CAPACITANCE

4.7

µF

MINIMUM AND MAXIMUM INDUCTANCE

L

0.3

3.0

µH