EUP3412 Datasheet, PDF (4/11 Pages) Eutech Microelectronics Inc – 1.5A/1.5MHz, Synchronous Step-Down Converter with Soft Start

Absolute Maximum Ratings (1)
EUP3412
„ Input Supply Voltage ----------------------------------------------------------- -0.3V to 6V
„ EN, FB Voltages ---------------------------------------------------------------- -0.3V to V_IN
„ P-Channel Switch Source Current (DC) ------------------------------------------ 1.7A
„ N-Channel Switch Sink Current (DC) ---------------------------------------------- 1.7A
„ Peak SW Sink and Source Current -------------------------------------------------- 2.6A
„ Junction Temperature ------------------------------------------------------------------- 125°C
„ Storage Temperature ------------------------------------------------------ -65°C to +150°C
„ Lead Temp (Soldering, 10sec) ------------------------------------------------------- 260°C
Recommend Operating Conditions (2)
„ Supply Voltage (V_IN) ----------------------------------------------------------- 2.7V to 5.5V
„ Operating Temperature Range --------------------------------------------- -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 the Spec. apply over the full operating temperature range, otherwise Spec. are T_A=+25 .
V_IN=3.6V unless otherwise specified.
Symbol
Parameter
Conditions
EUP3412
Min Typ Max.
V_IN Input Voltage Range
● 2.7
5.5
UVLO Input Undervoltage Lockout
● 1.5
2.3
Unit
V
V
I_FB Feedback Current
0
nA
V_FB Regulated Feedback Voltage
T_A=+25°C (Note 3)
-40°C≤T_A≤+85°C (Note 3)
0.49 0.5 0.51
V
● 0.485 0.5 0.515
∆V_FB Reference Voltage Line Regulation V_IN=2.7V to 5.5V
0.26 0.4 %/V
∆V_OUT Output Voltage Line Regulation V_IN=2.7V to 5.5V
0.26 0.4 %/V
V_LOADREG Output Voltage Load Regulation I_LOAD=0mA to 1500mA
I_Q Quiescent Current
V_FB=0.45V, I_LOAD=0A
●
0.1
%
300 400 µA
I_SHDN Shutdown Current
V_EN=0V
0.1
1
µA
I_PK Peak Inductor Current
V_IN=3.6V, V_FB=0.45V
2.4
A
f_OSC Oscillator Frequency
R_PFET R_DS(ON) of P-Channel FET
R_NFET R_DS(ON) of N-Channel FET
V_FB=0.45V
V_FB=0V
I_SW=200mA
I_SW=200mA
● 1.2 1.5 1.8 MHz
750
kHz
●
132 210 mΩ
●
126 210 mΩ
I_LSW SW Leakage Current
V_EN=0V, V_SW=0 or 5V, V_IN=5V
-1
1
µA
V_EN EN Threshold
● 0.3 1.0 1.5 V
I_EN EN Leakage Current
1
µA
Note (3): The EUP3412 is tested in a proprietary test mode that connects FB to the output of the error amplifier.
DS3412 Ver1.3 Mar. 2009
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