MAX8588 19-3527 Rev 0 3/05 High-Efficiency, Low-I PMIC with Q Dynamic Core for PDAs and Smartphones General Description Features The MAX8588 power-management IC is optimized for Six Regulators in One Package devices using Intel X-Scale microprocessors, includ- Step-Down DC-DC for I/O at 1.3A ing smartphones, PDAs, internet appliances, and other Step-Down DC-DC for Memory at 0.9A portable devices requiring substantial computing and Step-Down Serial-Programmed DC-DC for CORE multimedia capability at low power. Up to 0.5A The IC integrates seven high-performance, low-operating- Three LDO Outputs for SRAM, PLL, and USIM current power supplies along with supervisory and Always-On Output for VCC BATT management functions. Included are three step-down Low Operating Current DC-DC outputs, three linear regulators, and a seventh always-on output. DC-DC converters power I/O, memo- 60A in Sleep Mode (Sleep LDOs On) ry, and the CPU core. The I/O supply can be preset to 130A with DC-DCs On (Core Off) 3.3V or adjusted to other values. The DRAM supply is 200A All Regulators On, No Load preset for 3.3V or 2.5V, or it can be adjusted with exter- 5A Shutdown Current nal resistors. The CPU core supply is serial pro- Optimized for X-Scale Processors grammed for dynamic voltage management and can supply up to 0.5A. Linear-regulated outputs are provid- Backup-Battery Input ed for SRAM, PLL, and USIM supplies. 1MHz PWM Switching Allows Small External To minimize quiescent current, critical power supplies Components have bypass sleep LDOs that can be activated when Tiny 6mm x 6mm, 48-Pin Thin QFN Package output current is very low. Other functions include sep- arate on/off control for all DC-DC converters, low-bat- tery and dead-battery detection, a reset and power-OK output, a backup-battery input, and a two-wire serial Ordering Information interface. PART TEMP RANGE PIN-PACKAGE All DC-DC outputs use fast, 1MHz PWM switching and small external components. They operate with fixed-fre- MAX8588ETM -40C to +85C 48 Thin QFN (6mm x 6mm) quency PWM control and automatically switch from PWM to skip-mode operation at light loads to reduce operating current and extend battery life. The core out- Pin Configuration appears at end of data sheet. put can be forced into PWM mode at all loads to mini- mize noise. A 2.6V to 5.5V input voltage range allows 1-cell lithium-ion (Li+), 3-cell NiMH, or a regulated 5V Simplified Diagram input. The MAX8588 is available in a tiny 6mm x 6mm, 48-pin thin QFN package. Applications MAIN BATTERY IN MAX8588 PDA, Palmtop, and Wireless Handhelds BACKUP Third-Generation Smart Cell Phones V1 VCC IO 3.3V BATTERY BKBT Internet Appliances and Web-Books V2 VCC MEM 2.5V VCC CORE V3 0.8V TO 1.3V MR VCC PLL 1.3V V4 RSO nRESET nVCC FAULT POK V5 VCC SRAM 1.1V DBO nBATT FAULT VCC USIM V6 0V, 1.8V, 3.0V SYS EN ON1-2 PWR EN V7 ON3-6 VCC BATT X-Scale is a trademark of Intel Corp. Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.High-Efficiency, Low-I PMIC with Q Dynamic Core for PDAs and Smartphones ABSOLUTE MAXIMUM RATINGS LX2 Continuous Current........................................-0.9A to +0.9A IN, IN45, IN6, MR, LBO, DBO, RSO, POK, SCL, SDA, LX3 Continuous Current........................................-0.5A to +0.5A BKBT, V7, SLP, SRAD, PWM3 to GND...............-0.3V to +6V REF, CC , ON , FB , DBI, LBI, V1, V2, RAMP, BYP, PG1, PG2, PG3 to GND.........................................-0.3V to +0.3V V1, V2, V4, V5, V6 Output Short-Circuit Duration.......Continuous MR to GND ...........................................-0.3V to (V + 0.3V) IN PV1, PV2, PV3, SLPIN to IN...................................-0.3V to +0.3V Continuous Power Dissipation (T = +70C) A 6mm x 6mm 48-Pin Thin QFN V4, V5 to GND ..........................................-0.3V to (V + 0.3V) IN45 (derate 26.3mW/C above +70C)...........................2105mW V6 to GND ..................................................-0.3V to (V + 0.3V) IN6 PV1 to PG1 ............................................................-0.3V to +6.0V Operating Temperature Range ...........................-40C to +85C Junction Temperature......................................................+150C PV2 to PG2 ............................................................-0.3V to +6.0V PV3 to PG3 ............................................................-0.3V to +6.0V Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C LX1 Continuous Current....................................-1.30A to +1.30A Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (V = 3.6V, V = 3.0V, V = 1.1V, V = 1.35V, circuit of Figure 5, T = 0C to +85C, unless otherwise noted. Typical values IN BKBT LBI DBI A are at T = +25C.) A PARAMETER CONDITIONS MIN TYP MAX UNITS PV1, PV2, PV3, SLPIN, IN Supply PV1, PV2, PV3, IN, and SLPIN must connect together 2.6 5.5 V Voltage Range externally IN45, IN6 Supply Voltage Range 2.4 5.5 V V rising 2.25 2.40 2.55 IN IN Undervoltage-Lockout (UVLO) V Threshold V falling 2.200 2.35 2.525 IN Only V7 on, V = 3.0V 32 IN REG1 and REG2 on in switch mode, No load (I + PV1 130 REG3 off I + I + I + PV2 PV3 IN Quiescent Current A I + I + SLPIN IN45 REG1 and REG2 on in sleep mode, 60 I ) IN6 REG3 off All REGs on 225 ON1 = 0 4 BKBT Input Current A ON1 = IN 0.8 REF Output Voltage 0 to 10A load 1.2375 1.25 1.2625 V SYNCHRONOUS-BUCK PWM REG1 REG1 Voltage Accuracy FB1 = GND, 3.6V V 5.5V, load = 0 to 1300mA 3.25 3.3 3.35 V PV1 FB1 used with external resistors, 3.6V V 5.5V, PV1 FB1 Voltage Accuracy 1.231 1.25 1.269 V load = 0 to 1300mA FB1 Input Current FB1 used with external resistors 100 nA Error-Amplifier Transconductance Referred to FB 87 S Load = 800mA 180 280 Dropout Voltage (Note 1) mV Load = 1300mA 293 450 2 MAX8588