innovative power tm - 1 - www.active-semi.com copyright ? 2008 active-semi, inc. activepmu tm is a trademark of active-semi. ACT8342 three-channel integrated power management ic for handheld portable equipment system blo ck diagram product brief, 29-feb-08 advanced information D all information subject to change out1 adjustable, or 1.2v to 3.3v up to 350ma out2 1.4v to 3.7v up to 80ma out3 1.4v to 3.7v up to 150ma on2 on3 system control reg3 ldo reg2 ldo battery reg1 step-down dc/dc ACT8342 tm pmu pmu active nirq nmstr nrsto on1 features ? multiple patents pending ? three integrated regulators ? 350ma pwm step-down dc/dc ? 80ma low noise ldo ? 150ma low noise ldo ? independent enable/disable control ? minimal external components ? 3 3mm, thin-qfn (tqfn33-16) package ? only 0.75mm height ? rohs compliant applications ? portable devices and pdas ? mp3/mp4 players ? wireless handhelds ? gps receivers, etc. general description the patent-pending ACT8342 is a complete, cost effective, highly-efficient activepmu tm power man- agement solution that is ideal for a wide range of portable handheld equipment. this device inte- grates one pwm step-down dc/dc converter and two low noise, low dropout linear regulators (ldos) in a single, thin, space-saving package. this device is ideal for a wide range of portable handheld equipment that can benefit from the advantages of activepmu technology but does not require a high level of integration. reg1 is a fixed-frequency, current-mode pwm step-down dc/dc converter that is optimized for high efficiency and is capable of supplying up to 350ma output current. reg1?s output is available in a variety of factory-preset output voltage options, and an adjustable output voltage mode is also avail- able. reg2, reg3 are low noise, high psrr linear regulators that are capable of supplying up to 80ma, and 150ma, respectively. the ACT8342 is available in a tiny 3mm 3mm 16-pin thin-qfn package that is just 0.75mm thin.
ACT8342 innovative power tm - 2 - www.active-semi.com copyright ? 2008 active-semi, inc. product brief, 29-feb-08 product options functional block diagram block function output voltage c capability d reg1 step-down dc/dc adjustable, 1.2v, 1.5v, 1.8v, 2.5v, 3.0v, or 3.3v 350ma reg2 ldo 80ma reg3 ldo 150ma 1.4v to 3.7v c : output voltage options detailed in this table represent st andard voltage options, and are available for samples or production orders. contact active-semi for more information rega rding semi-custom output voltage combinations. d : contact factory for additional avail able products or custom requirements. reg1 vp1 gp1 sw1 out1 fb1 ga to battery ACT8342 reg2 ldo to battery or out1 on1 on3 reg3 ldo inl out2 out3 nrsto nmstr push button nirq inl out2 out2 on2 system control refbp reference a ctive- semi
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