ver: 0.2 jul 27 2012 tel: 886-3-5788833 http://www.gmt.com.tw 1 G2205 global mixed-mode technology 7+6 channels pmic for dsc features ? 1.5v ~ 5.5v input voltage operation. ? 95% efficient dc/dc converter ? highly integrated 7-ch dc/dc with integrated power mosfets ? main channel selectable buck or boost for 2*aa or li-ion application ? built-in 6 channel synchronous rectified current-mode pwm/psm converter, 1 channel non-synchronous rectified current-mode pwm converter. ? boost type with led open protection led driver ? 32-steps brightness control by i 2 c for led driver ? built-in hv ldo and rtc ldo ? built-in 4 ldo regulators ? low power consumption ( sleep mode ) < 10a. ? built-in selectable power on/off sequence for 4 channel synchronous rectified converter. ? built-in power on/off sequence by i2c for ccd+,ccd- power, and hvldo. ? built-in short circuit protection (scp) & under voltage protection (uvp) ? cycle-by-cycle current limit for dc/dc converter ? built-in thermal shutdown function. ? built-in battery ovp function. ? built-in soft-start function. ? built-in true shutdown in boost converter. ? fixed 1.5mhz/750khz operating frequency. ? tqfn40 package (5mmx5mm). applications dsc and dv power supply general description the G2205 provide a complete power supply solution for digital cameras. they improve performance, component count, and size compared to other multi-channel controllers in 2-cell aa, 1-cell li-ion, and multi-battery designs. on-chip mosfets provide up to 92~95% efficiency for critical power supplies. all channels dc/dc operate at one fixed frequency of 1.5mhz/750khz to optimize size, cost, and efficiency. all synchronous converters operate at pulse skipping mode at light load. they also feature true-shutdown as well as internal compensation to minimize external component count.. ordering information order number marking temp. range package (green) G2205rg1u 2205 -35 c~+85 c tqfn5x5-40 note: rg:tqfn5x5-40 1: bonding code u: tape & reel pin configuration vin12 vout10 vin9/10 vout9 vout12 lxm pvm fbm pvm u/d lxinv batt lxz iset voled lxbst pvbst vin8 vout8 vin11 vout11 pvz sda scl lxsu pvsu suout onsu 1 2 3 4 5 6 7 8 9 10 vbg reset_out det_in vsu seq_1 seq_2 voinv 11 12 13 14 15 16 17 18 19 20 G2205 tqfn5x5-40 thermal pad 30 29 28 27 26 25 24 23 22 21 40 39 38 37 36 35 34 33 32 31 lxsd pvsd lxled fbsd note: recommend connecting the thermal pad to the ground for excellent power dissipation. fbz G2205 su synchronous rectified current mode step-up main current mode selectable step-up/step-down sd synchronous rectified current mode step-down ddrz synchronous rectified current mode step-down ccd inv current mode inverting ccd bst synchronous rectified current mode step-up led driver synchronous rectified current mode step-up hv ldo/rtc ldo 4 x lvldo rtcout vin12 vout10 vin9/10 vout9 vout12 lxm pvm fbm pvm u/d lxinv batt lxz iset voled lxbst pvbst vin8 vout8 vin11 vout11 pvz sda scl lxsu pvsu suout onsu 1 2 3 4 5 6 7 8 9 10 vbg reset_out det_in vsu seq_1 seq_2 voinv 11 12 13 14 15 16 17 18 19 20 G2205 tqfn5x5-40 thermal pad 30 29 28 27 26 25 24 23 22 21 40 39 38 37 36 35 34 33 32 31 lxsd pvsd lxled fbsd note: recommend connecting the thermal pad to the ground for excellent power dissipation. fbz G2205 su synchronous rectified current mode step-up main current mode selectable step-up/step-down sd synchronous rectified current mode step-down ddrz synchronous rectified current mode step-down ccd inv current mode inverting ccd bst synchronous rectified current mode step-up led driver synchronous rectified current mode step-up hv ldo/rtc ldo 4 x lvldo rtcout
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