2016/02/24

A.2

3

EM5845

Absolute Maximum Ratings (Note1)

 VIN ------------------------------------------------------------------------------------------------------ -0.3V to +6.0V

 VCC ---------------------------------------------------------------------------------------------------

-0.3V to +6.0V

 VSW ----------------------------------------------------------------------------- ---------------------- -0.3V to +6.0V

<20n s -- - -- -- - -- -- - -- -- - -- -- - -- -- - -- - -- -- - -- -- - -- -- -- - -- -- - -- -- - -- - -- -- - -- -- - -- -- - - 2.5V to +9V

 EN,VFB,PG----------------------------------------------------------------------------------------------

-0.3V to +6.0V

 Package Thermal Resistance, θJA,DFN-10L 3X3 ------------------------------------

7 0 ° C /W

 Power Dissipation, PD @ TA = 25°C, DFN-10L 3X3 --------------------------------------------------- 1.45W

 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)

 Control Voltage, VCC,VIN -------------------------------------------------------------------------- +2.7V to +5.5V

 Junction Temperature ----------------------------------------------------------------------------- -40°C to 125°C

 Ambient Temperature ------------------------------------------------------------------------------- -40°C to 85°C

Electrical Characteristics

VIN=5V, TA=25°C, unless otherwise specified

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Supply Input Section

Vcc Shutdown Current

ISD

VEN=0V

0.1

uA

Supply Voltage

Vin

2.7

5.5

V

Power Voltage

Vcc

2.7

5.5

V

VCC Quiescent Current

IcQ

700

uA

VIN Quiescent Current

IIQ

100

uA

Power on Reset Threshold

UVLO

VIN&VCC wake up

2.2

2.4

2.6

V

Power on Reset Hysteresis

UVLO

0.3

V

Enable

Enable High Voltage

VEN_H

1.2

V

Enable Low Voltage

VEN_L

0.4

V

Enable Input Current

VEN=2V

2

uA

VEN=0V

0

uA

Switching Frequency

Frequency

Fs

VIN=5V, VOUT=1.2V, IOUT=1A

0.8

1

1.2

MHz

Min. Off Time

TOFF

50

100

150

ns

Switch

High Side MOS ON Resistance

RON_HS

80

mΩ

High Side MOS Current Limit

ICL

4.8

A

Low Side MOS ON Resistance

RON_LS

40

mΩ

Reference Voltage

Internal Reference

VREF

0.594 0.6 0.606

V