UD2401

UD2401 UNITPOWER | Alldatasheet

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z High Frequency Point-of-Load Synchronous Buck Converter for MB/NB/UMPC/VGA z Networking DC-DC Power System z Load Switch Absolute Maximum Ratings Thermal Data TO252 Pin Configuration Product Summery BV DSS R DS(ON)

P-Ch 20V Fast Switching MOSFETs Symbol Parameter Conditions Min. Typ. Max. Unit BV DSS Drain-Source Breakdown Voltage V GS =0V , I D △BV DSS /△T J BV DSS Temperature Coefficient Reference to 25℃ , I D R DS(ON) Static Drain-Source On-Resistance V GS =-4.5V , I D =-15A --- 42 52 mΩ V GS =-2.5V , I D =-10A --- 67 85 V GS(th) Gate Threshold Voltage V GS DS , I D =-250uA -0.5 -0.8 -1.2 V GS(th) V GS(th) Temperature Coefficient --- 3.95 --- mV/℃ I DSS Drain-Source Leakage Current V DS =-16V , V GS =0V , T J =25℃ --- --- 1 uA V DS =-16V , V GS =0V , T J =55℃ --- --- 5 I GSS Gate-Source Leakage Current V GS =±12V , V DS gfs Forward Transconductance V DS =-5V , I D Q g Total Gate Charge (-4.5V) V DS =-15V , V GS =-4.5V , I D =-15A --- 11.1 15.5 nC Q gs Gate-Source Charge --- 2.67 3.7 Q gd Gate-Drain Charge --- 3.26 4.6 T d(on) Turn-On Delay Time V DD =-10V , V GS =-4.5V , R G =3.3Ω, I D =-15A --- 5.2 10.4 ns T r Rise Time --- 12.8 23 T d(off) Turn-Off Delay Time --- 28.8 58 T f Fall Time --- 16 32 C iss Input Capacitance V DS =-15V , V GS =0V , f=1MHz --- 857 1200 pF C oss Output Capacitance --- 114 160 C rss Reverse Transfer Capacitance --- 108 151 Symbol Parameter Conditions Min. Typ. Max. Unit I S Continuous Source Current 1,4 V G D =0V , Force Current --- --- -18.4 A I SM Pulsed Source Current 2,4 --- --- -50 A V SD Diode Forward Voltage V GS =0V , I S =-1A , T J =25℃ --- --- -1 V t rr Reverse Recovery Time I F =-15A , dI/dt=100A/µs , T J =25℃ --- 11.6 --- nS Q rr Reverse Recovery Charge --- 2.6 --- nC Note : 1.The data tested by surface mounted on a 1 inch FR-4 board with 2OZ copper. 2.The data tested by pulsed , pulse width ≦ 300us , duty cycle ≦ 2% 3.The power dissipation is limited by 150℃ junction temperature 4.The data is theoretically the same as I D and I DM , in real applications , should be limited by total power dissipation. Electrical Characteristics (T J =25 ℃, unless otherwise noted) Diode Characteristics UD2401

P-Ch 20V Fast Switching MOSFETs 100 12345 GS (V) R DSON (mΩ) D =10A 0 0.2 0.4 0.6 0.8 1 SD , Source-to-Drain Voltage (V) S Source Current(A) T J =150℃ T J =25℃ 0.2 0.6 1.4 1.8 -50 0 50 100 150 T J ,Junction Temperature (℃ ) Normalized V GS(th) 0.2 0.6 1.0 1.4 1.8 -50 0 50 100 150 T J , Junction Temperature (℃) Normalized On Resistance Typical Characteristics Fig.1 Typical Output Characteristics Fig.2 On-Resistance vs. G-S Voltage Fig.3 Forward Characteristics of Reverse Fig.4 Gate-Charge Characteristics Fig.5 Normalized V GS(th) vs. T J Fig.6 Normalized R DSON vs. T J UD2401

P-Ch 20V Fast Switching MOSFETs 100 1000 159 1 3 1 7 2 1 DS (V) C (pF) F=1.0MHz Ciss Coss Crss 0.01 0.1 0.0001 0.001 0.01 0.1 1 t , Pulse Width (s) Normalized Thermal Response (R θJC P DM D = T ON T J peak = T C + P DM x R θJC T ON T 0.01 0.05 0.1 0.2 DUTY=0.5 SINGLE PULSE 0.02 Fig.8 Safe Operating Area Fig.9 Normalized Maximum Transient Thermal Impedance Fig.7 Capacitance Fig.10 Switching Time Waveform Fig.11 Gate Charge Waveform UD2401