symbol v ds v gs i dm t j , t stg symbol ty p max 73 90 96 125 r jl 63 75 junction and storage temperature range a p d c 1.4 1 -55 to 150 t a =70c i d 8 6.3 30 pulsed drain current b power dissipation a t a =25c continuous drain current a maximum units parameter t a =25c t a =70c absolute maximum ratings t a =25c unless otherwise noted v v 12 gate-source voltage drain-source voltage 20 c/w maximum junction-to-ambient a steady-state c/w w maximum junction-to-lead c steady-state c/w thermal characteristics parameter units maximum junction-to-ambient a t 10s r ja AO8808 features v ds (v) = 20v i d = 8a (v gs = 10v) r ds(on) < 14m ? (v gs = 10v) r ds(on) < 15m ? (v gs = 4.5v) r ds(on) < 20m ? (v gs = 2.5v) r ds(on) < 28m ? (v gs = 1.8v) the AO8808 uses advanced trench technology to provide excellent r ds(on) , low gate charge and operation with gate voltages as low as 1.8v while retaining a 12v v gs(max) this device is suitable for use as a uni-directional or bi- directional load switch, facilitated by its common-drain configuration. standard product AO8808 is pb-free (meets rohs & sony 259 specifications). AO8808l is a green product ordering option. AO8808 and AO8808l are electrically identical. d2 g1 d1 s1 g2 d2 s2 g1 s1 s1 d1 g2 s2 s2 1 2 3 4 8 7 6 5 tssop-8 top view dual n-channel enhancement mode field general description effect transistor rating. www.freescale.net.cn 1 / 4
AO8808 symbol min typ max units bv dss 20 v 10 t j =55c 25 i gss 100 na v gs(th) 0.5 0.75 1 v i d(on) 30 a 10.6 14 t j =125c 14.2 17 12.2 15 m ? 16.1 20 m ? 23.2 28 m ? g fs 36 s v sd 0.73 1 v i s 2.4 a c iss 1810 pf c oss 232 pf c rss 200 pf r g 1.6 ? q g 19.8 nc q gs 1.8 nc q gd 5nc t d(on) 3.3 ns t r 5.9 ns t d(off) 44 ns t f 7.7 ns t rr 22 ns q rr 9.8 nc this product has been designed and qualified for the consumer market. applications or uses as critical components in life support devices or systems are not authorized. aos does not assume any liability arising out of such applications or uses of its products. aos reserves the right to improve product design, functions and reliability without notice. i f =8a, di/dt=100a/ s v gs =0v, v ds =10v, f=1mhz switching parameters total gate charge v gs =4.5v, v ds =10v, i d =8a gate source charge gate drain charge gate resistance v gs =0v, v ds =0v, f=1mhz turn-off fall time turn-on delaytime v ds =5v, i d =8a dynamic parameters maximum body-diode continuous current input capacitance output capacitance turn-on rise time turn-off delaytime v gs =10v, v ds =10v, r l =1.3 ? , r gen =3 ? m ? v gs =4.5v, i d =5a i s =1a,v gs =0v v gs =1.8v, i d =3a forward transconductance diode forward voltage static drain-source on-resistance r ds(on) i dss a gate threshold voltage v ds =v gs i d =250 a v ds =16v, v gs =0v v ds =0v, v gs =12v zero gate voltage drain current gate-body leakage current electrical characteristics (t j =25c unless otherwise noted) static parameters parameter conditions body diode reverse recovery time body diode reverse recovery charge i f =8a, di/dt=100a/ s drain-source breakdown voltage on state drain current i d =250 a, v gs =0v v gs =2.5v, i d =4a v gs =4.5v, v ds =5v v gs =10v, i d =8a reverse transfer capacitance a: the value of r ja is measured with the device mounted on 1in 2 fr-4 board with 2oz. copper, in a still air environment with t a =25c. the value in any 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 r jl and lead to ambient. d. the static characteristics in figures 1 to 6,12,14 are obtained using 80 s pulses, duty cycle 0.5% max. e. these tests are performed with the device mounted on 1 in 2 fr-4 board with 2oz. copper, in a still air environment with t a =25c. the soa curve provides a single pulse rating. rev3: august 2005 www.freescale.net.cn 2 / 4
AO8808 typical electrical and thermal characteristics 0 5 10 15 20 25 30 35 40 012345 v ds (volts) fig 1: on-region characteristics i d (a) v gs =1.5v 2v 2.5v 4.5v 10 0 5 10 15 20 25 30 0 0.5 1 1.5 2 2.5 v gs (volts) figure 2: transfer characteristics i d (a) 5 10 15 20 25 30 0 5 10 15 20 i d (a) figure 3: on-resistance vs. drain current and gate voltage r ds(on) (m ? ) 1.0e-05 1.0e-04 1.0e-03 1.0e-02 1.0e-01 1.0e+00 1.0e+01 0.0 0.2 0.4 0.6 0.8 1.0 1.2 v sd (volts) figure 6: body-diode characteristics i s (a) 2 5 c 125 0.8 1 1.2 1.4 1.6 0 25 50 75 100 125 150 175 temperature (c) figure 4: on-resistance vs. junction temperature normalized on-resistance v gs =10v v gs =4.5v v gs =2.5v 0 5 10 15 20 25 30 35 40 0246810 v gs (volts) figure 5: on-resistance vs. gate-source voltage r ds(on) (m ? ) 25c 125c v ds =5v v gs =2.5v v gs =4.5v v gs =10v i d =5a v gs =1.8v v gs =1.8v 25 c 125c i d =5a www.freescale.net.cn 3 / 4
AO8808 typical electrical and thermal characteristics 0 1 2 3 4 5 048121620 q g (nc) figure 7: gate-charge characteristics v gs (volts) 0 500 1000 1500 2000 2500 3000 0 5 10 15 20 v ds (volts) figure 8: capacitance characteristics capacitance (pf) c iss 0 10 20 30 40 0.001 0.01 0.1 1 10 100 1000 pulse width (s) figure 10: single pulse power rating junction-t o ambient (note e) power (w) 0.01 0.1 1 10 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000 pulse width (s) figure 11: normalized maximum transient thermal impedance z ja normalized transient thermal resistance c oss c rss 0.1 1.0 10.0 100.0 0.1 1 10 100 v ds (volts) i d (amps) figure 9: maximum forward biased safe operating area (note e) 1 00 s 10m 1m 01 1s 10s dc r ds(on) limited t j(max) =150c t a =25c v ds =10v i d =8a single pulse d=t on /t t j,pk =t a +p dm .z ja .r ja r ja =90c/w t o n t p d in descending order d=0.5, 0.3, 0.1, 0.05, 0.02, 0.01, single pulse t j(max) =150c t a =25c 10 s www.freescale.net.cn 4 / 4
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