EUP3484S
Absolute Maximum Ratings (1)
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
ꢁ
Supply Voltage (VIN)
-------------------------------------------------------- -0.3V to +28V
------------------------------------------------------ -0.3V to +28V
------------------------------------------------------ -1V to VIN +0.3V
-------------------------------------------------- VSW -0.3V to VSW +6V
Enable Voltage (VEN
Switch Voltages (VSW
Boot Voltage (VBS)
)
)
All Other Pins ---------------------------------------------------------------------- -0.3V to +6V
Junction Temperature -------------------------------------------------------------------- 150°C
Lead Temperature -------------------------------------------------------------- 260°C
Storage Temperature -------------------------------------------------------- -65°C to +150°C
Output Voltage VOUT ----------------------------------------------------------- 0.925V to 18V
Thermal Resistance θJA (SOP-8_EP) ------------------------------------------------------------ 60°C /W
Thermal Resistance θJC (SOP-8_EP) ------------------------------------------------------------ 20°C /W
Maximum Power Dissipation (PD) ------------------------------------------------------- 2.083W
Recommend Operating Conditions (2)
ꢁ
ꢁ
Input Voltage VIN ---------------------------------------------------------------------
4.5V to 24V
Ambient Operating Temp
----------------------------------------------------- -40°C to +85°C
Note(1):Stress beyond those listed under “Absolute Maximum Ratings” may damage the device.
Note(2):The device is not guaranteed to function outside the recommended operating conditions.
Electrical Characteristics
The
● denote specifications which apply over the full operating temperature range, otherwise specification are
VIN=12V , TA=25°C unless otherwise specified.
EUP3484S
Typ
Parameter
Conditions
Unit
Min
Max.
5
Shutdown Supply Current
Supply Current
VEN=0V
VFB=1V
1
µA
0.45
0.9
mA
0.907
0.897
0.925
0.925
0.943
0.953
Feedback Voltage
4.5 VIN
≤
≤
24V
V
●
Error Amplifier Voltage Gain
Error Amplifier Transconductance
High-Side Switch On-Resistance
Low-Side Switch On-Resistance
High-Side Switch Leakage Current
Upper Switch Current Limit
360
800
160
110
V/V
µA/V
mꢁ
mꢁ
µA
ꢂIC = ±10µA
VEN=0V, VSW=0V
5
Minimum Duty Cycle
From Drain to Source
3.8
5.5
A
Lower Switch Current Limit
0
A
COMP to Current Sense Transconductance
Oscillation Frequency
7.5
340
110
A/V
KHz
KHz
%
300
380
Short Circuit Oscillation Frequency
VFB=0V
Maximum Duty Cycle
Minimum On Time
EN Disable Threshold
VFB=0.7V
90
230
1.5
2.5
2.5
ns
V
●
●
0.36
2.3
2
2.0
2.8
3
EN Lockout Threshold
VEN Rising
V
EN Lockout Threshold Hysteresis
Input Under Voltage Lockout Threshold
Soft-Start Charge Current
210
4.1
6
mV
V
µA
°C
VIN Rising
VSS=0V
3.8
4.4
Thermal Shutdown
160
DS3484S Ver1.2 May 2012
4
EUTECH [ EUTECH MICROELECTRONICS INC ]
