EC3618

4K25N-Rev.F003

Page 3 of 8

PWM Control 2A Step-Down Converter

Characteristics

Symbol

Rating

Unit

V

Feedback Pin Voltage

V

EN Pin Voltage

V

SS Pin Voltage

SS

V

COMP Pin Voltage

V

V

Switch Pin Voltage

V

Power Dissipation

PD

Internally limited

mW

Storage Temperature Range

-65 to +150

°C

Operating Junction Temperature Range

-40 to +125

°C

Operating Input Voltage(Note 1)

8 to 58

V

Thermal Resistance from Junction to case

θ

JC

15

°C/W

Thermal Resistance from Junction to ambient (Note 2)

θ

JA

75

°C/W

Note:

1.

When Vop(Operating Input Voltage)<10V then Maximum output current is 0.45A。

2.

θ

(Multi-layer).

Electrical Characteristics

Characteristics

Symbol

Conditions

Min

Typ

Max

Units

Feedback Voltage

0.98

1.00

1.02

V

Quiescent Current

-

3

6

mA

Feedback Bias Current

-

0.1

0.5

uA

Shutdown Supply Current

-

0.5

1

mA

Line Regulation

-

0.3

0.6

%

Load Regulation

-

0.3

0.6

%

Current Limit

2.8

-

-

A

EC3618N

90

120

150

KHz

Oscillator frequency

EC3618A

200

250

300

KHz

EC3618N ICL

-

50

-

KHz

EC3618A ICL

-

110

-

KHz

Short frequency

EC3618N/EC3618A

-

30

-

KHz

High (regulator ON)

2.0

-

-

V

EN Pin Logic input threshold

voltage

Low (regulator OFF)

-

-

0.8

-

5

-

uA

EN Pin Input Current

-

5

-

uA

SS Current

-

10

-

uA

-

220

300

m

Efficiency (EC3618)

EFFI

-

90

-

%

Thermal shutdown Temp

(Junction Temp)

-

150

-

°C

Thermal shutdown Hysteresis

-

40

-

°C