2015/12/24

A.2

2

EM1104

Pin Assignment

Pin Name Pin No.

Pin Function

VIN

1

Input Voltage. This is the source input to the power device that supplies current to

the output pin.

GND

2

Ground.

EN

3

Chip Enable Input (Active high).

NC

4

No Connection.

VOUT

5

Output Voltage. VOUT is power output pin. An internal pull low resistance exists

when the device is disabled. Minimum 1uF low ESR ceramic capacitor is required at

this pin for stabilizing VOUT voltage.

Function Block Diagram

Power On

Reset

Thermal

Protection

Current

Limit

+

VREF

5

VOUT

1

VIN

Control

Logic

3

EN

Soft Start

GND

Voltage

Reference

VREF

2

Absolute Maximum Ratings (Note1)

 V

IN

---------------------------------------------------------------------------------------------------

-0.3V to +6.0V

 Other Pins------------------------------------------------------------------------------------ -0.3V to (V

IN+0.3V)

 Power Dissipation, PD @ TA = 25

C, SOT23-5 ------------------------------------------------------- 0.4W

 Package Thermal Resistance, ΘJA, SOT23-5 (Note 2)--------------------------------------- 250

C/W

 Junction Temperature------------------------------------------------------------------------------------- 150

C

 Lead Temperature (Soldering, 10 sec.)-------------------------------------------------------------- 260

C

 Storage Temperature -------------------------------------------------------------------------

65C to 150C

 ESD susceptibility (Note3)

HBM (Human Body Mode)------------------------------------------------------------------------------

2KV

MM (Machine Mode)--------------------------------------------------------------------------------------

200V

Recommended Operating Conditions (Note4)

 Supply Input Voltage, V

IN ---------------------------------------------------------------------

+2.5V to +5.5V

 Junction Temperature --------------------------------------------------------------------------

40C to 125C

 Ambient Temperature ----------------------------------------------------------------------------

40C to 85C