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advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 1 of 16 v 1.0 aat110 7 details are subject to change without notice. buck_boost & boost pwm controller with adjustable ldo features z complete pwm power control circuitry ch1: buck_boost, ch2: boost z adjustable low dropout (ldo) regulator z under-voltage lockout (uvlo) protection z totem pole output z output short circuit protection z dead time control : 0% to 100% z wide operating frequency: 10khz to 800khz pin configuration 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 ie1 oe1 dtc1 gnd out1 v ref out3 scp ie2 oe2 dtc2 out2 top view ie3 v dd tssop-16 package r t c t general description the AAT1107 provides an integrated two-channel pulse-width-modulation (pwm) solution for the power supply of dc-dc system. this device offers system engineers the flexibility to tailor-make the power supply circu itry for the specific applications. each channel contains its own error amplifier, pwm comparator, dead-time control (dtc) and output driver. the two channels share common features of under-voltage protection, oscillator, short circuit protection and vo ltage reference circuit. two dead-time control inputs are assigned for channel (ch1) and channel 2 (ch2) individually, and dead-time control inputs can be used to control on/off operation. the AAT1107 contains one step-up (boost) circuit at ch2 and one invertin g (buck_boost) circuit at ch1. in addition, dtc can be set to provide 0% to 100% dead-time through a resistive divider network and soft-start can be implemented by paralleling the dtc resistor with a capacitor. the maximum output current of ldo regulator can be enlarged by connecting an nmosfet (or npn bipolar) as a source follo wer stage at out3 pin.
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 2 of 16 v 1.0 aat110 7 pin description pin no name i/o description 1 t c - external timing capacitance 2 t r - external timing resistance 3 ie3 i inverting input of ldo regulator 4 ie1 i inverting input of error amplifier 1 5 oe1 o output of error amplifier 1 6 dtc1 i output 1 dead-time / soft-start setting 7 out1 o output 1 8 gnd - ground 9 v dd - power supply 10 out2 o output 2 11 dtc2 i output 2 dead-time / soft-start setting 12 oe2 o output of error amplifier 2 13 ie2 i inverting input of error amplifier 2 14 ne2 o ldo output 15 scp - timer latch setting 16 ref v o reference voltage (2.505v) output
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 3 of 16 v 1.0 aat110 7 absolute maximum ratings characteristics symbol value unit supply voltage dd v 7.0 v input voltage ( ? ie , dtc) i v dd v v output voltage o v dd v +0.3 v output current o i 120 / 120 + ? ma operating free-air temperature range c t 20 ? + c o storage temperature range storage t 45 ? + c o power dissipation d p 500 mw recommended operating conditions symbol min max unit supply voltage dd v 4.0 6.5 v input voltage, ie1, ie2, ie3 cm v 0.5 1.6 v output voltage o v 0 dd v v oscillator (osc) capacitance osc c 100 15,000 pf oscillator (osc) resistance osc r 5.1 50.0 ? k oscillation (osc) frequency osc f 10 800 khz output current, 1 out i, 2 out i 12 o i - 50 / 50 ? + ma output current, 3 out i 3 o i - 30 ma operating free-air temperature c t 20 ? o
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 4 of 16 v 1.0 aat110 7 electrical characteristics, dd v = 5.0v (unless otherwise specified) (see note 1) oscillator parameter symbol test condition min typ max unit frequency osc f pf 220 c osc = , ? = k 10 r osc 320 400 480 khz frequency change with dd v v f ? 6.0v to 4.0v v dd = c 25 t c o = pf 220 c osc = ? = k 10 r osc - 1 - % under-voltage protection parameter symbol test condition min typ max unit upper threshold voltage uph v c 25 t c o = 2.6 2.9 3.2 v lower threshold voltage upl v c 25 t c o = 2.23 2.53 2.83 v hysteresis () upl uph v v ? hys v c 25 t c o = - 0.37 - v short circuit protection control parameter symbol test co ndition min typ max unit input threshold voltage 2 r v ch2 2.10 2.40 2.65 v input threshold voltage 1 r v ch1 0.95 1.05 1.15 v input threshold voltage 3 r v ch3 - 1.05 - short-circuit detect threshold voltage tscd v 1.48 1.64 1.80 v scp terminal source current scp i 5 . 3 ? ? 5 . 1 ? a note 1: typical values of all parameters are specified at c 25 t c o = .
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 5 of 16 v 1.0 aat110 7 electrical characteristics, dd v = 5.0v (unless otherwise specified) (see note 1) (cont.) reference voltage parameter symbol test condition min typ max unit internal reference voltage refi v ma 1 i ref ? = ,c 25 t c o = 1.220 1.233 1.246 reference voltage ref v ma 1 i ref ? = ,c 25 t c o = 2.430 2.505 2.580 v input voltage regulation ri v ma 1 i ref ? = , dd v =4.0v to 6.0v - 1 5 mv output regulation ro v ma 1 . 0 i ref ? = to ma 1 ? ea (error amplifier) parameter test condition min typ max unit input offset voltage io v ch1, ch2, unity gain - - 6 mv input bias current ib i ch1, ch2 - 15 100 na input voltage range ir v ch1, ch2 0.5 - 1.6 v open-loop voltage gain vo a 70 85 - db + os v 2.3 2.5 - output voltage swing ? os v - 0.7 0.9 v output sink current + os i oe=1.25v 3 20 - ma output source current ? os i oe=1.25v - 75 ? 45 ? a operating current parameter test condition min typ max unit off dd i ? output ?off? state - 1.8 - ma supply current on dd i ? ? = k 10 r osc - 2.0 - ma
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 6 of 16 v 1.0 aat110 7 electrical characteristics, dd v = 5.0v (unless otherwise specified) (see note 1) (cont.) dead-time control & pwm parameter symbol test condition min typ max unit input bias current ib i dtc v=2v - 0.1 1.0 v 0 d 1 v duty=0%, osc f =10khz 1.87 1.97 2.07 input threshold voltage (dtc1) 100 d 1 v duty=100%, osc f =10khz 1.38 1.48 1.58 v 0 d 2 v duty=0%, osc f =10khz 1.38 1.48 1.58 input threshold voltage (dtc2) 100 d 2 v duty=100%, osc f =10khz 1.87 1.97 2.07 v latch input voltage (dtc1) dtc 1 v a 40 i dtc = 2.28 2.48 - v latch input voltage (dtc2) dtc 2 v a 100 i dtc = - 0.1 0.3 v latch mode source current (dtc1) dtc 1 i dtc1=0v - 560 ? 200 ? a ? 200 ? a output stage parameter symbol test co ndition min typ max unit high-level output voltage oh v ma 50 i o ? = 3.6 4.0 - v low-level output voltage ol v ma 50 i o + = - 0.8 1.2 v rise time rise t l c =1,000pf - 100 - ns fall time fall t l c =1,000pf - 100 - ns leakage current leak i o v =6.0v - - 5.0 a ldo parameter symbol test co ndition min typ max unit output voltage rd v dd v=5v, 3 out v =3.3v 3.17 3.30 3.43 v line regulation i lr dd v =4.0v~6.5v, 3 out i =10ma - 0.08 0.30 % load regulation o lr 3 out i =1ma~30ma - 0.1 - %
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 7 of 16 v 1.0 aat110 7 block diagram scp v ref uvlo oe1 ie1 ie2 oe2 dtc1 dtc2 scp uvc latch uvc uvc v ref v ref v ref v dd r t gnd c t latch pwm pwm uvc err-amp err-amp uvc osc v dd scp comp vr3 ie3 out3 v erf i 1.233v v ref i 1.233v v ref i 1.233v vr1 vr2 ie3 out1 v dd out2 v dd
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 8 of 16 v 1.0 aat110 7 application circuit 1 r1 r2 r3 r4 AAT1107 out1 out2 v dd v dd oe1 ie1 oe2 ie2 ct rt gnd scp dtc2 dtc1 v ref vn1 v ref r5 c1 r6 c2 vp2 c scp q1 vn1 d1 c9 l1 q2 l2 c11 u1 vp2 d2 c10 ct rt r8 r10 c5 r9 r7 c4 r11 r12 c12 vp3 out3 ie3 c20
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 9 of 16 v 1.0 aat110 7 application circuit 2 AAT1107 out1 out2 v dd v dd oe1 ie1 oe2 ie2 ct rt gnd scp dtc2 dtc1 v ref vn1 r1 r2 v ref r5 c1 r6 c2 vp2 r3 r4 c scp q1 vn1 d1 c9 l1 q2 l2 c11 u1 c8 d3 d4 c7 vp4 vp2 d2 c10 optional circuit: positive charge pump circuit ct rt r8 r10 c5 r9 r7 c4 out3 ie3 vp3 c12 r11 r12 q3 v dd optional circuit: enlarge output current c13 d6 d5 c14 vn2 optional circuit : negative charge pump circuit c20
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 10 of 16 v 1.0 aat110 7 buck-boost ?] inverting ?^ timing chart ?] ch1 ?^ note: scp 2 r scp scp i v c t ? 1.64v 2.53v lockout free 1.97v 1.48v t scp 1.05v oe dtc pwmoutput output scp scpcomp v dd
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 11 of 16 v 1.0 aat110 7 boost ?] step-up ?^ timing chart ?] ch-2 ?^ note: scp 2 r scp scp i v c t ? 1.64v 2.53v lockout free t scp pwmoutput output scp scp comp v dd 1.97v 1.48v oe dtc 2.40v
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 12 of 16 v 1.0 aat110 7 package dimension 16-pin tssop
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 13 of 16 v 1.0 aat110 7 package dimension (cont.) dimensions in millimeters deminsions in inches symbols min typ max min typ max a 1.05 1.10 1.20 0.041 0.043 0.047 a1 0.05 0.10 0.15 0.002 0.004 0.006 a2 ------ 1.00 1.05 ------ 0.039 0.041 b 0.20 0.25 0.28 0.008 0.010 0.011 c ------ 0.127 ------ ------ 0.005 ------ d 4.900 5.075 5.100 0.1930 0.1998 0.2000 e 6.20 6.40 6.60 0.244 0.252 0.260 e1 4.30 4.40 4.50 0.170 0.173 0.177 e ------ 0.65 ------ ------ 0.026 ------ l 0.50 0.60 0.70 0.020 0.024 0.028 y ------ ------ 0.076 ------ ------ 0.003 o 0 o 4 o 8 o 0 o 4 o 8 note: 1. controlling dimension: millimeters 2. lead frame material: olin c7025/eftec 64t 3. dimension ?d? does not include mold flash, ti e bar burrs and gate burrs. mold flash, tie bar burrs and gate burrs shall not exceed 0.006? [0.15 millimeters] per end. dimension ?e1? does not include interlead flash. interlead flash shall not exceed 0.010? [0.25 millimeters] per side. 4. dimension ?b? does not include dambar protrusion. allowable dambar protrusion shall be 0.003? [0.08 millimeters] total in excess of the ?b? dimension at maximum material condition. dambar cannot be located on the lower radius or the foot. minimum space between protrusion and an adjacent lead to be 0.0028? [0.07 millimeters]. 5. tolerance: 0.010 [0.25 millimeters] unless otherwise specified. 6. otherwise dimension follow acceptable spec. 7. reference document: jedec spec mo-153.
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 14 of 16 v 1.0 aat110 7 tape and reel
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 15 of 16 v 1.0 aat110 7 tape and reel (cont.) note: 1. 10 sprocket hole pitch cumulative tolerance camber not to exceed 1 millimeter in 100 millimeters. 3. material: anti-static black advantek polystyrene. 4. 0 a and 0 b measured on a plane 0.3 millimeters above the bottom of the pocket. 5. 0 k measured from a plane on the inside bottom of the pocket to the top surface of the carrier. 6. pocket position relative to sprocket hole measured as true position of pocket, not pocket hole. part marking tssop16 top marking AAT1107 xxxxxx tssop16 back marking yyww
advanced analog technology, inc. ? x?w?t??ta?|3--?q ? ? advanced analog technology, inc . ? page 16 of 16 v 1.0 aat110 7 ordering information

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