EUP2561

DS2561 Ver1.0 Dec. 2006

4

Absolute Maximum Ratings

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

PGND to GND ---------------------------------------------------------------------- -0.3V to 0.3V

LX,OUT to GND ------------------------------------------------------------------- -0.3V to 30V

Thermal Resistance

DFN-8 -------------------------------------------------------------------------------- 50°C /W

Junction Temperature ---------------------------------------------------------------- 150°C

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

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

Recommended Operating Conditions

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

Electrical Characteristics

TA =-40°C to +85°C, unless otherwise noted.)

EUP2561

Parameter

Conditions

Min

Typ

Max.

Unit

Supply Voltage

2.6

5.5

V

UVLO Threshold

2.20

2.40

2.60

V

Quiescent Current

No Switching

0.39

0.60

mA

OVLO Threshold

26

27.5

29

V

12

22

35

OUT Input Bias Current

0.01

1

µA

Output Voltage Range

25.5

V

ERROR AMPLIFIER

CTRL to CS Regulation

0.095

0.100

0.105

V

CTRL Input Resistance

200

400

700

kΩ

CTRL Dual-Mode

Threshold

Rising

100

180

260

mV

CTRL Shutdown Enable

Delay

7.5

mS

CS-to-COMP

Transconductance

Vcomp=1.0V

21

52

85

µS

OSCILLATOR

Operating Frequency

0.78

1.05

1.3

MHz

Maximum Duty Cycle

CTRL=IN CS=GND

88

92

96

%

N-CHANNEL SWITCH

LX On-Resistance

1.6

2.4

Ω

LX Current Limit

Duty cycle=90%

550

750

1000

mA