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July 2001
AO4800 Dual N-Channel Enhancement Mode Field Effect Transistor
General Description
The AO4800 uses advanced trench technology to provide excellent RDS(ON) and low gate charge. The two MOSFETs make a compact and efficient switch and synchronous rectifier combination for use in buck converters.
Features
VDS (V) = 30V ID = 6.9A RDS(ON) < 27m (VGS = 10V) RDS(ON) < 32m (VGS = 4.5V) RDS(ON) < 50m (VGS = 2.5V)
D1 S2 G2 S1 G1 1 2 3 4 8 7 6 5 D2 D2 D1 D1
D2
G1 S1
G2 S2
SOIC-8
Absolute Maximum Ratings TA=25C unless otherwise noted Parameter Symbol VDS Drain-Source Voltage VGS Gate-Source Voltage Continuous Drain TA=25C A Current TA=70C ID Pulsed Drain Current
B
Maximum 30 12 6.9 5.8 40 2 1.44 -55 to 150
Units V V A
IDM PD TJ, TSTG
TA=25C TA=70C Power Dissipation Junction and Storage Temperature Range Thermal Characteristics Parameter Maximum Junction-to-Ambient A Maximum Junction-to-Ambient A Maximum Junction-to-Lead C
W C
Symbol t 10s Steady-State Steady-State RJA RJL
Typ 48 74 35
Max 62.5 110 40
Units C/W C/W C/W
Alpha & Omega Semiconductor, Ltd.
AO4800
Electrical Characteristics (TJ=25C unless otherwise noted) Symbol Parameter STATIC PARAMETERS BVDSS Drain-Source Breakdown Voltage IDSS IGSS VGS(th) ID(ON) Zero Gate Voltage Drain Current Gate-Body leakage current Gate Threshold Voltage On state drain current Conditions ID=250A, VGS=0V VDS=24V, VGS=0V TJ=55C VDS=0V, VGS=12V VDS=VGS ID=250A VGS=4.5V, VDS=5V VGS=10V, ID=6.9A TJ=125C RDS(ON) Static Drain-Source On-Resistance VGS=4.5V, ID=6.0A VGS=2.5V, ID=5A 12 0.7 25 1 22.6 33 27 42 16 0.71 Min 30 1 5 100 1.4 27 40 32 50 Typ Max Units V A nA V A m m m S V A pF pF pF nC nC nC ns ns ns ns ns nC
gFS VSD IS
Forward Transconductance VDS=5V, ID=5A Diode Forward Voltage IS=1A Maximum Body-Diode Continuous Current
1 3
DYNAMIC PARAMETERS Ciss Input Capacitance Coss Output Capacitance Crss Reverse Transfer Capacitance Rg Gate resistance SWITCHING PARAMETERS Qg Total Gate Charge Qgs Gate Source Charge Qgd Gate Drain Charge tD(on) Turn-On DelayTime tr Turn-On Rise Time tD(off) Turn-Off DelayTime tf Turn-Off Fall Time trr Body Diode Reverse Recovery time Qrr Body Diode Reverse Recovery charge
VGS=0V, VDS=15V, f=1MHz VGS=0V, VDS=0V, f=1MHz
858 110 80 1.24 9.6 1.65 3 5.7 13 37 4.2 15.5 7.9
VGS=4.5V, VDS=15V, ID=6.9A
VGS=10V, VDS=15V, RL=2.2, RGEN=6 IF=5A, dI/dt=100A/s IF=5A, dI/dt=100A/s
A: The value of R JA is measured with the device mounted on 1in2 FR-4 board with 2oz. Copper, in a still air environment with TA=25C. The value in any a given application depends on the user's specific board design. The current rating is based on the t 10s thermal resistance rating. B: Repetitive rating, pulse width limited by junction temperature. C. The R JA is the sum of the thermal impedence from junction to lead RJL and lead to ambient. D. The static characteristics in Figures 1 to 6 are obtained using 80 s pulses, duty cycle 0.5% max. 2 E. These tests are performed with the device mounted on 1 in FR-4 board with 2oz. Copper, in a still air environment with TA=25C. The SOA curve provides a single pulse rating.
Alpha & Omega Semiconductor, Ltd.
AO4800 TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS
30 25 20 ID (A) 15 10 5 0 0
10V
20 3V 4.5V 2.5V ID(A) 16 12 8 VGS=2V 4 0 1 2 3 4 5 0 0.5 1 1.5 2 2.5 3 VDS (Volts) Fig 1: On-Region Characteristics VGS (Volts) Figure 2: Transfer Characteristics 125C 25C VDS=5V
60 50 RDS(ON) (m) 40 30 20 10 0 5 10 15 20 ID (Amps) Figure 3: On-Resistance vs. Drain Current and Gate Voltage VGS=4.5V VGS=2.5V Normalized On-Resistance
1.7 1.6 1.5 1.4 1.3 1.2 1.1 1 0.9 0.8 0 50 100 150 200 Temperature ( C) Figure 4: On-Resistance vs. Junction Temperature VGS=2.5V
ID=5A
VGS=4.5V VGS=10V
VGS=10V
70 60 RDS(ON) (m) 50 40 30 20 10 0 2 4 6 8 10 VGS (Volts) Figure 5: On-Resistance vs. Gate-Source Voltage 25C 125C
1.0E+01
ID=5A
IS Amps
1.0E+00 1.0E-01 1.0E-02 1.0E-03 1.0E-04 1.0E-05 1.0E-06 0.00
125C
25C
0.25
0.50
0.75
1.00
1.25
1.50
VSD (Volts) Figure 6: Body diode characteristics
Alpha & Omega Semiconductor, Ltd.
AO4800 TYPICAL ELECTRICAL AND THERMAL CHARACTERISTICS
5 4 VGS (Volts) 3 2 1 0 0 2 4 6 8 10 12 Qg (nC) Figure 7: Gate-Charge characteristics 1500 VDS=15V ID=6.9A Capacitance (pF) 1250 1000 750 500 250 0 0 5 10 15 20 25 30 VDS (Volts) Figure 8: Capacitance Characteristics Coss Crss Ciss f=1MHz VGS=0V
100.0 RDS(ON) limited 10.0 ID (Amps) 1ms 10ms 0.1s 1.0 1s 10s DC 0.1 0.1 1 VDS (Volts) Figure 9: Maximum Forward Biased Safe Operating Area (Note E) 10 100 TJ(Max)=150C TA=25C 100s Power W
40 TJ(Max)=150C TA=25C 30
20
10
0 0.001
0.01
0.1
1
10
100
1000
Pulse Width (s) Figure 10: Single Pulse Power Rating Junction-toAmbient (Note E)
10 Z JA Normalized Transient Thermal Resistance
D=Ton/T TJ,PK=TA+PDM.ZJA.RJA RJA=62.5C/W
In descending order D=0.5, 0.3, 0.1, 0.05, 0.02, 0.01, single pulse
1
0.1
PD Ton
Single Pulse 0.01 0.00001 0.0001 0.001 0.01 0.1 1
T 100 1000
10
Pulse Width (s) Figure 11: Normalized Maximum Transient Thermal Impedance
Alpha & Omega Semiconductor, Ltd.
ALPHA & OMEGA
SEMICONDUCTOR, INC.
SO-8 Package Data
DIMENSIONS IN MILLIMETERS SYMBOLS
DIMENSIONS IN INCHES
A A1 A2 b c D E1 e E h L aaa
MIN 1.45 0.00 --- 0.33 0.19 4.80 3.80 5.80 0.25 0.40 --- 0
NOM 1.50 --- 1.45 --- --- --- --- 1.27 BSC --- --- --- --- ---
MAX 1.55 0.10 --- 0.51 0.25 5.00 4.00 6.20 0.50 1.27 0.10 8
MIN 0.057 0.000 --- 0.013 0.007 0.189 0.150 0.228 0.010 0.016 --- 0
NOM 0.059 --- 0.057 --- --- --- --- 0.050 BSC --- --- --- --- ---
MAX 0.061 0.004 --- 0.020 0.010 0.197 0.157 0.244 0.020 0.050 0.004 8
NOTE: 1. LEAD FINISH: 150 MICROINCHES ( 3.8 um) MIN. THICKNESS OF Tin/Lead (SOLDER) PLATED ON LEAD 2. TOLERANCE 0.100 mm (4 mil) UNLESS OTHERWISE SPECIFIED 3. COPLANARITY : 0.1000 mm 4. DIMENSION L IS MEASURED IN GAGE PLANE
PACKAGE MARKING DESCRIPTION
RECOMMENDED LAND PATTERN
NOTE: LG PARTN F A Y W LN
- AOS LOGO - PART NUMBER CODE. - FAB LOCATION - ASSEMBLY LOCATION - YEAR CODE - WEEK CODE. - ASSEMBLY LOT CODE
SO-8 PART NO. CODE
UNIT: mm
PART NO. AO4400 AO4401
CODE 4400 4401
PART NO. AO4800 AO4801
CODE 4800 4801
PART NO. AO4700 AO4701
CODE 4700 4701
ALPHA & OMEGA
SEMICONDUCTOR, INC.
SO-8 Carrier Tape
SO-8 Tape and Reel Data
SO-8 Reel
SO-8 Tape
Leader / Trailer & Orientation

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