AOZ9250DI Alpha & Omega

AOZ9250DI Single-Cell Battery Protection IC with Integrated MOSFET General Description Features The AOZ9250DI is a battery protection IC with Integrated Common-Drain N-Channel MOSFET integrated dual common-drain N-channel MOSFET. 23.8m (typ.) source to source on resistance The device includes accurate voltage detectors and High-accuracy voltage detection circuit delay circuits, and is suitable for protecting single-cell Overcharge detection accuracy: 25mV (25C), lithium-ion/lithium-polymer rechargeable battery packs 45mV (-10C to 60C) from overcharge, over-discharge, and over-current Overcharge release accuracy: 40mV conditions. Over-discharge detection accuracy: 100mV The AOZ9250DI is available in a 2mm x 4mm 6-pin DFN Over-discharge release accuracy: 100mV package and is rated over a -40C to +85C ambient Discharge over-current detection accuracy: 10mV temperature range. Charge over-current detection accuracy: 15mV 20% accurate internal detection delay times (external capacitors are unnecessary) Charger connection pin withstands up to 24V Wide operating temperature range: -40C to 85C Low current consumption 2.8A (typ.), 5.0 A (max.) in operation mode at 25C Small 2mm x 4mm 6-pin DFN package Applications Lithium-ion rechargeable battery packs Lithium-polymer rechargeable battery packs Typical Applications Circuit EB- VSS OUTM C1 R2 AOZ9250DI NC NC 0.1F 1k EB+ VDD VM R1 330 Rev. 2.0 May 2014 www.aosmd.com Page 1 of 16AOZ9250DI Ordering Information Over- Over- Over- Discharge Load Short- Charge Overcharge Overcharge discharge discharge discharge Over- circuiting Over- Detection Release Detection Release Release current Detection current Power 0V Battery Voltage Voltage Voltage Voltage Voltage Threshold Threshold Threshold Down Charge (V ) (V ) (V ) (V ) (V ) (V )* (V ) (V )* Part Number Function Function CU CL DL DU1 DU2 DIOV SHORT CIOV AOZ9250DI 4.375V 4.175V 2.50V 2.90V 2.51V 0.11V 0.50V -0.10V No Yes AOS Green Products use reduced levels of Halogens, and are also RoHS compliant. Please visit www.aosmd.com/media/AOSGreenPolicy.pdf for additional information. * Please refer to page 9 for calculation of charge and discharge current limit. Table 1. Delay Time Discharge Load Short- Charge Overcharge Over-discharge Over-current circuiting Over-current Detection Detection Detection Detection Detection Delay Time Delay Time Delay Time Delay Time Delay Time (t ) (t ) (t ) (t ) (t ) Part Number CU DL DIOV SHORT CIOV AOZ9250DI 1.0s 64ms 8ms 250s8ms Pin Configuration VSS 1 6 OUTM NC 2 5 NC PAD VDD 3 4 VM 2x4 DFN-6 (Top View) Pin Description Pin Pin Name Number Pin Function NC 2, 5 Pin 2 is for test purposes only. Always leave pin 2 and pin 5 unconnected. VSS 1 Ground. VSS is the source of the internal Discharge MOSFET. Connect VSS directly to the cathode of lithium-ion/lithium polymer battery cell. VDD 3 Input supply pin. Connect a 0.1F capacitor between VDD and VSS. VM 4 Over-current/Charger Detection Pin. Connect a 1k resistor between VM and the negative terminal of the battery pack. OUTM 6 Output pin. OUTM is the source of the internal Charge MOSFET. Connect OUTM directly to the negative terminal of the battery pack. PAD Drain MOSFET Common-Drain Connection. This pad is for test purposes only. Always leave this pad unconnected. Rev. 2.0 May 2014 www.aosmd.com Page 2 of 16