ver: 0.1 may 26, 2011 tel: 886-3-5788833 http://www.gmt.com.tw 1 G2204/G2204b G2204c/G2204d global mixed-mode technology inc. 7-channel dc-dc converter 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. ? selectable boost type with led open protection or current regulation type led driver. ? 32-steps brightness control for led driver ? built-in hv ldo and rtc ldo ? low power consumption ( sleep mode ) < 10ua. ? built-in power on/off sequence for 4 channel synchronous rectified converter. ? built-in power on sequence for ccd+,ccd- power. ? 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. ? tqfn4x4-32 package. pin configurations general description the G2204 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. applications dsc power supply ordering information order number marking temp. range package (green) G2204k11u 2204 -20 c to +85 c tqfn4x4-32 G2204bk11u 2204b -20 c to +85 c tqfn4x4-32 G2204ck11u 2204c -20 c to +85 c tqfn4x4-32 G2204dk11u 2204d -20 c to +85 c tqfn4x4-32 G2204: ch1-ch2-ch4-ch3-sdok, G2204b:ch1-ch4-ch3-ch2-sdok, G2204c:ch1-ch4-ch2-sdok-ch3, G2204d:ch1-ch4-ch2-ch3-sdok note: k1: tqfn4x4-32 1: bonding code u: tape & reel lxz pvz sdok fbsu note: recommend connecting the thermal pad to the ground for excellent power dissipation. G2204/G2204b/G2204c/G2204d 1 2 3 4 5 6 18 19 20 21 22 23 30 25 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 fbz onled iset voled lxled lxbst vobst fbbst onsu vbg vsu rtcout fbinv voinv batt pvsu pvsd lxsd ldoout fbldo pvm u/d lxm pvm fbm ccdseq lxinv 26 fbsd lxsu G2204/G2204b G2204c/G2204d 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 boost or current regulator hv ldo/rtc ldo tqfn4x4-32 lxz pvz sdok fbsu note: recommend connecting the thermal pad to the ground for excellent power dissipation. G2204/G2204b/G2204c/G2204d 1 2 3 4 5 6 18 19 20 21 22 23 30 25 27 29 28 9 10 11 12 thermal pad 7 13 14 17 31 8 15 16 24 32 fbz onled iset voled lxled lxbst vobst fbbst onsu vbg vsu rtcout fbinv voinv batt pvsu pvsd lxsd ldoout fbldo pvm u/d lxm pvm fbm ccdseq lxinv 26 fbsd lxsu G2204/G2204b G2204c/G2204d 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 boost or current regulator hv ldo/rtc ldo tqfn4x4-32
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