advanced power electronics corp. ape1913 1.2mhz, high voltage, boost converter features description input voltage 2.6v to 5.5v adjustable output voltage range up to 27v 1.2mhz fixed switching frequency internal soft-start function current limit and thermal shutdown protection under voltage lockout < 1a shutdown current available in the tsot-23-5l package data and specifications subject to change without notice 1 201203211 package & ordering information typical application the ape1913 is a current mode step up converter intended for small, low powe r applications. the converter input voltage ranging from 2.6v to 5.5v. the output voltage can be set up to 27v. the frequency is 1.2mhz allows the use of small external inductors and capacitors and provides fast transient response. internal soft start results in small inrush current and extends battery life. internal power mosfet with very low rds (on) provides high efficiency. the ape1913 automatically transits from pwm to pfm during light load condition further increasing efficiency. the converter also provides protection functions such as under-voltage lockout, current limit and thermal shutdown. the ape1913 is available in tsot-23-5l package. (top view) tsot-23-5l 3 2 5 4 1 sw gnd fb en vcc package type ty5 : tsot-23-5l ape1913x r1 54k vin=5v c1 10uf l1 4.7uh r2 470k vout=12v u1 ape1913 vcc en fb gnd sw c3 1nf c2 4.7uf d1 b240a r2 suggest 390k~820k on off r3 r4 1m r1 r2 vout = 1.238v x (1 + ------- ) vin vout r3 2.6~3.6v 5v 120k ? 2.6~5.3v 7v 82k ? 2.6~5.5v 7.5~27v 0 ?
advanced power electronics corp. ape1913 absolute maximum ratings vcc pin voltage (v cc ) ----------------------------------- - gnd - 0.3v to gnd + 6.5v feedback pin voltage (v fb ) ---------------------------- - gnd - 0.3 to vcc + 0.3 en pin voltage (v en ) ------------------------------------- - gnd - 0.3 to vcc + 0.3 switch pin voltage (v sw ) -------------------------------- - 30v power dissipation (pd) ---------------------------------- - ( t j -t a ) / r thja w storage temperature range (t st ) -------------------- -40c to +150c operating junction temperature range (t op ) ----- -40c to +125c thermal resistance from junction to case(rth jc ) 110c/w 250c/w note. r thja is measured with the pcb copper area of approximately 1 in2(multi-layer). electrical specifications (v cc =5v, v out =12v, t a =25 c, unless otherwise specified) parameter sym test condition min typ max units input voltage range v cc 2.6 - 5.5 v under voltage lockout uvlo rising - 2.35 2.6 v uvlo hysteresis - -130 - mv step-up voltage adjust range v out 3 - 27 v operating quiescent current i ccq i out = 0ma, v fb =1.5v - 150 250 a shutdown current i sd v en =0v - 0.1 1 a feedback voltage v fb 1.213 1.238 1.263 v fb input leakage current i fb-lkg v fb = 1.3v -100 0.01 100 na line regulation v in = 2.5 to 5.5v, i out = 20ma - 0.2 - % load regulation v in = 5v, i out = 1ma to 400ma - 0.2 - % switching frequency f osc 900 1200 1500 khz maximum duty d max 82 87 - % n-channel mosfet current limit i lim duty=50% - 1.9 - a vcc=3v, i sw =1a - 650 - vcc=5v, i sw =1a - 500 - sw leakage current i swl v lx = 27v, v fb =1.5v - - 1 a en high-level input voltage v ih 1-- v en low-level input voltage v il - - 0.4 v en hysteresis hys - 200 - mv en input leakage current i en-lkg v en =gnd or vcc - 0.01 0.1 a thermal shutdown t ds - 150 - thermal shutdown hysteresis t sh -35- note1: guaranteed by design. 2 c mosfet on-resistance (note1) m r ds(on) thermal resistance from junction to ambient(rth ja )
advanced power electronics corp. ape1913 pin descriptions pin symbol pin descripiton vcc power switch output. sw is the drain of the internal mosfet switch. connect the power inductor and output rectifier to sw. sw can swing between gnd and 27v. fb feedback input. fb voltage is 1.238v. connect a resistor divider to fb. regulator on/off control input. a high input at en turns on the converter, and a low input turns it off. when not used, connect en to the input source for automatic startup. the en pin cannot be left floating. gnd ground pin block diagram 3 input supply pin. must be locally bypassed. sw en vcc sw control and driver logic en soft start current sense slope compensation oscillator 1.2mhz fb error amplifier summing comparator thermal shutdown enable/ disable gnd n- mo s uvlo vref 1.238v
advanced power electronics corp. ape1913 application description setting the output voltage under voltage lockout (uvlo) input capacitor selection output capacitor selection layout guide 4 application circuit item shows the basic application circuit with ape1913 adjustable output version. the external resistor sets the output voltage according to the following equation: to avoid mis-operation of the device at low input voltages an under voltage lockout is included that disables the device, if the input voltage falls below (2.35v-130mv). ) r1 r2 + (1 1.238v = v out for most applications, r2 is a suggested a value by 390k~820k . place the resistor-divider as close to the ic as possible to reduce the noise sensitivity. the input capacitor reduces the surge current drawn from the input and switching noise from the device. the input capacitor impedance at the switching frequency shall be less than input source impedance to prevent high frequency switching current passing to the input. a low esr input capacitor sized for maximum rms current must be used. ceramic capacitors with x5r or x7r dielectrics are highly recommended because of thei r low esr and small temperature coefficients. a 10 f ceramic capacitor for most applications is sufficient. for a lower output power requirement application, this value can be dec r eased . the output capacitor is required to keep the output voltage ripple small and to ensure regulation loop stability. the output capacitor must have low impedance at the switching frequency. ceramic capacitors with x5r or x7r dielectrics are recommended due to their low esr and high ripple current. a 4.7uf ceramic capacitors works for most of the applications. higher capacitor values can be used to improve the load transient response. en gnd sw fb vcc c1 l1 vout r1 r2 sw should be connected to inductor by wide and short trace, keep sensitive components away from this trace c2 ape1913 123 4 5 vin c1's ground must be as closer to ic's gnd pin as possible r3 d1 r4 c2's ground must be as closer to ic's gnd pin as possible c3
advanced power electronics corp. ape1913 typical performance characteristics 5 0 50 100 150 200 250 300 2.5 3 3.5 4 4.5 5 5.5 vin (v) iccq (ua) vin v.s iccq vfb=1.5v 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 2.5 3 3.5 4 4.5 5 5.5 vin (v) frequency (mhz) vin v.s frequency 1.2 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 2.5 3 3.5 4 4.5 5 5.5 vin (v) vfb (v) vin v.s feedback voltage 1.21 1.22 1.23 1.24 1.25 1.26 1.27 0 50 100 150 200 250 300 350 400 450 iout (ma) vfb (v) iout v.s feedback voltage vout=12v vin=3.3v vin=5v 1.2 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 -40 -20 0 25 50 75 100 125 temperature vfb (v) temperature v.s feedback voltage vin=5v, vout=12v iout=10ma 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -40 -20 0 25 50 75 100 125 temperature frequency (mhz) temperature v.s frequency vin=5v
advanced power electronics corp. ape1913 typical performance characteristics 6 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 -40 -20 0 25 50 75 100 125 temperature en threshold voltage (v) temperature v.s en threshold voltage vin=5v enh enl 80 81 82 83 84 85 86 87 88 89 90 -40 -20 0 25 50 75 100 125 temperature maximum duty (%) temperature v.s maximum duty vin=5v 1.6 1.8 2 2.2 2.4 2.6 2.8 3 -40 -20 0 25 50 75 100 125 temperature uvlo (v) temperature v.s uvlo rising falling 0 0.5 1 1.5 2 2.5 3 30% 40% 50% 60% 70% duty current limit (a) duty v.s current limit vin=3.3v vin=5v 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 500 600 700 iout (ma) efficiency (%) efficiency test vin=3.3v vout=5v 0 10 20 30 40 50 60 70 80 90 100 0 100 200 300 400 500 iout (ma) efficiency (%) efficiency test vout=12v vin=5v vin=3.3v
advanced power electronics corp. ape1913 typical performance characteristics 7 enable on power on load transient load transient power on enable on
advanced power electronics corp. ape1913 marking information tsot-23-5l 8 bayws part number : ba year : a = 2010 1 = 2011 ? ? week: a~z : 01~26 a~z : 27~52 id code : internal
package outlines e1 e e e1 b d a a1 a2 y l1 r l c l2 dimensions in millimeters dimensions in inches symbol min. nom. max. min. nom. max. a - - 1.1 - - 0.043 a1 0 - 0.1 0 - 0.004 a2 0.7 0.9 1 0.028 0.035 0.039 b 0.3 0.4 0.5 0.012 0.016 0.02 c 0.08 0.14 0.2 0.003 0.006 0.008 d 2.8 2.9 3 0.11 0.114 0.118 e 2.6 2.8 3 0.102 0.11 0.118 e1 1.5 1.6 1.7 0.059 0.063 0.067 e 0.95 bsc. 0.037 bsc. e1 1.90 bsc. 0.075 bsc. l 0.3 0.45 0.6 0.012 0.018 0.024 l1 0.60 ref. 0.024 ref. l2 0.25 bsc. 0.010 bsc. y - - 0.1 - - 0.004 r 0.1 - - 0.004 - - 0 o - 8 o 0 o - 8 o jeced outline: mo-193 ab
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