PM6613N 2 to 4-cell Li-Ion, Li-FePO battery charger with SMBus 4 interface, N-channel RBFET and BATFET MOSFET selectors Data brief Features Buck converter Synchronous buck converter with N-channel high-side, low-side power MOSFET integrated drivers 350 kHz or 700 kHz switching frequency, selectable with SMBus QFN3x3 20L AC adapter input voltage range 9 V - 24 V 5 V bias input voltage supply Battery charge voltage range 2.5 V -18 V 0.5% charge voltage accuracy a synchronous switching DC-DC converter with N-channel high-side and low-side Power 0.1% cell charge voltage resolution MOSFET drivers. The possibility to set the 3% charge current accuracy switching frequency with SMBus by choosing one 3% input current accuracy of the two preset values of 350 kHz or 700 kHz Overvoltage, overcurrent protection assures the best trade-off between power Battery, inductor, power MOSFET short- conversion efficiency and PCB cost and size. circuit protection Integrated loop compensation network and soft- Internal loop compensation network start allow the reduction of the number of external Integrated soft-start components. Selector The PM6613N integrates 2 charge pumps to drive N-channel ACFET/RBFET MOSFET driver N-channel ACFET/RBFET and BATFET N-channel BATFET MOSFET driver MOSFETs. System The SMBus communication interface is used to 1 mA quiescent supply current set the battery charge current and voltage. 17 A - 35 A sleep mode current (BATFET The PM6613N charges 2 to 4 series Li-Ion or charge pump off - on) LiFePO cells, for mobile PC applications. It is 4 Thermal shutdown available in a compact QFN20L 3x3 mm, package. Applications Table 1. Device summary Mobile PC: Order code Package Packing UMPC/MID and tablets Netbook and notebook computers PM6613N QFN3x3 20L Tape and reel Description The PM6613N is a high efficiency battery charger with SMBus communication interface. It includes February 2012 Doc ID 022741 Rev 1 1/8 For further information contact your local STMicroelectronics sales office. www.st.com 8Typical application circuit PM6613N 1 Typical application circuit Figure 1. Typical application circuit STL56N3LLH5 8 1 1 8 7 2 2 7 6 3 3 6 nMOS nMOS 5 4 4 5 STL56N3LLH5 ACOK ACN 16 10 IOUT BATFET 17 9 ALARM SRN 18 8 SCL SRP 19 7 SDA DCIN 20 6 THP 21 100nF CIOUT STL56N3LLH5 STL56N3LLH5 nMOS nMOS 5 4 5 4 6 3 6 3 7 2 7 2 8 1 8 1 STPS2L30A 3.9kR RBATFET AM10245v1 2/8 Doc ID 022741 Rev 1 RACOKU +5V 1MR ACOK ACOK RIOUT IOUT IOUT FLT 10kR RILU +5V 1MR ILIMext RALARMU RILL +5V SYS NM RWAKE D2 BAT54JFILM SYS 10kR WAKE WAKE ALARM ALARM 110kR RACDIVU ADP RSCLU +5V ADP 430kR CADP0 10kR BATFET SCL SCL CADP1 2.2uF 25V BATFETG 4 5 RSDAU 3 6 +5V 22uF 56kR 2 7 CIN1 10kR RFLT1 1 8 SDA ACFET SDA nMOS 22uF 3.9R HS STL56N3LLH5 HIGH B2BC PH 1 15 PH ILIM 2 14 ACDIV HIGH ACDIV RSB L1 CBT BATT PH BTST 3 13 B2B BATT BTST B2B 4.7uH PM6613N RBT 0R COUT2 10mR 220nF RACDVR + LOW 4 12 ACDRV RBFETG COUT1 LOW ACDRV +5V 10uF 3.9kR 5 11 ACP +5V 10uF BAT54JFILM GND ACP D1 RBFET CIN05 LS C5V 2.2uF 10V D3 10uF RDC LSG +5V RFLT2 CBT1 1R 3.9R CDC RSA 1uF ACN 10uF 10mR SRP SYS SRN BATFET GND ILIM RACDIVL