ver: 1.0 may 23, 2011 tel: 886-3-5788833 http://www.gmt.com.tw 1 g2202/G2202B 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 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 ) < 10a. 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 g2202/G2202B 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. except for ccdbst and led driver, all channels dc/dc operate at one fixed frequency of 1.5mhz to optimize size, cost, and efficiency. 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) g2202k11u 2202 -20 c to +85 c tqfn4x4-32 G2202Bk11u 2202b -20 c to +85 c tqfn4x4-32 g2202: ch1-ch2-ch4-ch3, G2202B:ch1-ch4-ch3-ch2 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. g2202/G2202B tqfn4x4-32 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 g2202/G2202B 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 lxz pvz sdok fbsu note: recommend connecting the thermal pad to the ground for excellent power dissipation. g2202/G2202B tqfn4x4-32 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 g2202/G2202B 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
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