(Ta=25

Paramenter

Symbol

Ratings

Unit

Supply Voltage

Vin

- 0.3V

7V

V

LX Pin Switch Voltage

- 0.3

(VDD + 0.8V)

V

Other I/O Pin Voltages

- 0.3V

(VDD + 0.3V) V

Lx Pin Switch Current

2.5

A

EXT Pin Driver Current

200

mA

Package Thermal Resistance

SOT-26

Pd

145

/W

SOT-89-5

45

/W

Operating Junction Temperature

Tj

125

Storage Temperature Range

- 65 ~ +150

(Vin =1.5V, VDD=3.3V, I=0, Ta = 25

, unless otherwise spec

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Start-UP Voltage

V

Operating VDD Range

VDD pin voltage

V

µA

Switch-off Current I (VDD)

µA

µA

Feedback Reference Voltage

Close Loop, VDD = 3.3V

V

Switching Frequency

VDD = 3.3V

KHz

Maximum Duty

VDD = 3.3V

%

LX ON Resistance

VDD = 3.3V

Ω

Current Limit Setting

VDD = 3.3V

A

EXT ON Resistance to VDD

VDD = 3.3V

Ω

EXT ON Resistance to GND

VDD = 3.3V

Ω

Line Regulation

mV/V

Load Regulation

mV/mA

CE Pin Trip Level

VDD = 3.3V

V

Temperature Stability for Vout

ppm/

Thermal Shutdown

Thermal Shutdown Hysterises

* Note: The CE pin shall be tied to VDD pin and inhibit to act the ON/OFF state whenever the VDD pin voltage

may reach to 5.5V or above.

--

0.80

0.85

2--

6.5

--

75

--

--

14

--

--

0.01

1

1.225

1.25

1.275

--

500

--

--

95

--

5--

--

0.3

--

--

2

5--

--

0.8

1.2

0.25

--

50

0.4

--

165

--

10

--

--

--

--

--

--

--

--

10

--

P3 / 5

KB3301

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS