Preliminary Datasheet

LP6250

LP6250 –00 Version 1.0 Datasheet

Sep.-2010

www.lowpowersemi.com

Page 3 of 8

Absolute Maximum Ratings

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

Power Dissipation, PD @ TA = 25°C

TDFN-10--------------------------------------------------------------------------------------------------------600mW

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

Storage Temperature Range --------------------------------------------------------------------------------- −65°C to 150°C

Recommended Operating Conditions

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

SW Pin Voltage----------------------------------------------------------------------------------------------------------------- 7V

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

Parameter

Conditions

LP6250

Units

Min

Typ. Max

Supply Voltage

2.2

5

V

Output Voltage Range

2.5

5

V

Supply Current(Shutdown)

VEN=VOUT=0V,VSW=5V

0.05

1

uA

Supply Current

VFB=1.3V

0.2

mA

Disable Supply Current

EN=GND

0.1

uA

Feedback Voltage

0.5

V

Feedback Input Current

VFB=1.2V

50

nA

Switching Frequency

FREQ

500

KHz

Maximum Duty Cycle

80

85

90

%

Low Battery Detector Input

0.5

V

EN Input Low Voltage

0.4

V

EN Input High Voltage

1.4

V

Mosfet On Resistance

Ron(N-mos)

235

mΩ

Ron(P-mos)

250

mΩ

Mosfet Voltage(VDS)

14

V

NMOS Current Limit

2.1

A

Soft-start Reset Switch Resistance

100

Ω

Soft-start Input Source Current

VSS=1.2V

4.0

uA