Preliminary Datasheet

LP6229

LP6229 –00 Version 1.0 Datasheet

Jul.-2013

Page 3 of 6

Absolute Maximum Ratings

Supply Input Voltage---------------------------------------------------------------------------------------------------------------6V

Power Dissipation, PD @ TA = 25°C

SOT23-6----------------------------------------------------------------------------------------------------------450mW

Package Thermal Resistance

SOT23-6, θJA ---------------------------------------------------------------------------------------------------------------165°C/W

Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------------260°C

Recommended Operating Conditions

Supply Input Voltage-----------------------------------------------------------------------------------------------------2.2V to 6V

EN Input Voltage ---------------------------------------------------------------------------------------------------------0V to 5.5V

Operation Junction Temperature Range --------------------------------------------------------------------−40°C to 125°C

Operation Ambient TemperatureRange------------------------------------------------------------------------−40°C to 85°C

Electrical Characteristics

(Vin=2.4V,Vout=3.5V,Cin=10uF,Cout=22uF,L1=2.2uH,R1=178K,R2=100K)

Parameter

Conditions

LP6229

Units

Min

Typ

Max

Supply Voltage

1.6

6

V

Output Voltage Range

2.5

28

V

Supply Current(Shutdown)

VEN=VOUT=0V,VSW=5V

0.05

1

uA

Supply Current

VFB=0.7V

0.19

mA

Feedback Voltage

0.6

V

Feedback Input Current

VFB=0.7V

50

nA

Switching Frequency

1.10

MHz

Maximum Duty Cycle

80

90

95

%

EN Input Low Voltage

0.4

V

EN Input High Voltage

1.4

V

High-side On Resistance

Vout=3.3V

300

Mosfet Voltage

28

V

Mosfet Current

1.5

A