Preliminary

EUP2618

DS2618 Ver0.1 Nov. 2007

5

Absolute Maximum Ratings

IN to GND ---------------------------------------------------------------------------- -0.3V to 6V

PGND ,TGND to GND --------------------------------------------------------------------- ±0.3V

RDY

,SUPP,SUPN to GND -------------------------------------------------------- -0.3V to 14V

LX to GND --------------------------------------------------------------------------- -0.3V to 19V

Operating Temperature --------------------------------------------------------- -40°C to 85°C

Junction Temperature -------------------------------------------------------------------

150°C

Storage Temperature ----------------------------------------------------------- -65°C to150°C

Lead Temp (Soldering, 10sec) --- ---------------------------------------------------

260°C

Electrical Characteristics

and those with

℃

boldface type apply over the full Operating

to 85

).

℃℃

noted.)

EUP2618

Parameter

Conditions

Min.

Typ.

Max.

Unit

Operating Power

Input Supply Voltage Range

2.5

5.5

V

Falling

1.9

2.13

2.35

V

VIN Under Voltage Lockout

Rising

2

2.23

2.45

V

not switching

0.7

1

mA

Quiescent Current

switching

2.1

4

mA

Shutdown Current

V SHDN =GND

0.1

10

uA

Thermal Shutdown

15℃ Hysteresis

165

℃

Reference

Reference Voltage

1.22

1.25

1.28

V

Line Regulation

2

5

mV

Load Regulation

1

5

mV

EA (Error Amplifier)

Feedback Voltage

1.22

1.25

1.28

V

Input Bias Current

100

200

nA

Feedback Voltage Line Regulation

0.07

0.15

%/V

Error Amp Transconductance

∆I=2uA

30

60

90

umho

Error Amp Voltage Gain

FB to COMP

853

V/V

Oscillator

Operating Frequency

1000

1200

1500

kHz

Maximum Duty

85

96

%

N-Channel Switch

Switch Current Limit

65% Duty Cycle

1.5

2.1

2.8

A