FAN5909

www.onsemi.com

5

Symbol

Parameter

Condition

Min

Typ

Max

Unit

POWER SUPPLIES

Input Voltage Range

2.7

5.5

V

Shutdown Supply Current

EN = 0 V, MODE = 0

0.5

3.0

mA

Under Voltage Lockout Threshold

2.20

2.45

2.60

V

Hysteresis

250

mV

LOGIC CONTROL

Logic Threshold Voltage;

EN, BPEN, MODE

Input HIGH Threshold

1.2

V

Input LOW Threshold

0.4

V

Logic Control Input Bias Current;

EN, BPEN, MODE

0.01

1.00

mA

ANALOG CONTROL

1.6

V

V

1.4

V

Mode

70

mV

125

mV

DC−DC Quiescent Current in Sleep Mode

50

80

mA

Gain

Gain in Control Range 0.16 V to 1.44 V

2.5

−50

+50

mV

LDO

LDO FET Resistance

29

m

W

LDO Dropout (Note 7)

100

mV

OVER TEMPERATURE PROTECTION

Over−Temperature Protection

Rising Temperature

+150

°C

Hysteresis

+20

°C

OSCILLATOR

Average Oscillator Frequency

2.6

2.9

3.2

MHz

DC−DC

PMOS On Resistance

80

m

W

NMOS On Resistance

60

P−Channel Current Limit (Note 8)

1.50

1.90

2.30

A

N−Channel Current Limit (Note 8)

1.50

1.90

2.30

A

Maximum Transient Discharge Current

3.7

4.5

A

LDO Current Limit

4.5

A

6. Input voltages nominally exceeding the lesser of VIN/2.5 or 1.6 V force 100% duty cycle.

8. The current limit is the peak (maximum) current.

9. Guaranteed by design. Maximum values are based on simulation results with 50% COUT derating; not tested in production. Voltage tran-

10. Protects part under short−circuit conditions