I N N SMBus 2 VDD SMBus ACCELERATOR LTC1694 2 RESET 5V 3.3V 12V VPPEN KEYBOARD CONTROLLER 2.XV ENABLE *LTC1436A *LTC1702/03 *LTC1735/36 CORE DC/DC CONVERTER LOW VOLTAGE PENTIUM(R) II PROCESSOR POWER PROCESSOR, MEMORY AND CORE LOGIC BACKLIGHT AND CONTRAST GENERATOR LT1184F LT1186F LT1786F (SMBus Controlled) LCD CONTROLLER DISK DRIVE PCMCIA CONTROLLER INFRARED INTERFACE LT1328 VBATT 3V LOW NOISE DC/DC CONVERTER LT1376 PCMCIA INTERFACE LTC1472 (2X) 5V SERIAL INTERFACE LT1537 LCD 12V KEYBOARD MULTIMEDIA AUDIO SUBSYSTEM PC CARD SERIAL PORT Linear Technology Corporation * 1630 McCarthy Blvd. * Milpitas, CA 95035-7417 * (408) 432-1900 * www.linear-tech.com * Literature Only: 1-800-4-LINEAR 2 BACKUP SYSTEM DC/DC CONVERTER *LTC1438/39 *LTC1625x 2 *LTC1628 BRIDGE BATTERY DC/DC CONVERTER LTC1558 LTC1559 TRIPLE SUPPLY MONITOR LTC1326 SMBus BACKUP SMBus POWER SWITCH CONTROLLER LTC1623 LTC1710 , LTC and LT are registered trademarks of Linear Technology Corporation PowerPath is a trademark of Linear Technology Corporation. Pentium is a registered trademark of Intel Corp. U.S. PATENT #5,481,178 * U.S. PATENT #5,723,970 CONTROL PowerPathTM CONTROLLER LTC1473 LTC1479 NiCd/NiMH BUTTON CELL POWER MANAGEMENT MICROCONTROLLER Li-Ion/NiMH Li-Ion/NiMH SMART BATTERY SMART BATTERY V BATTERY CHARGER LT1505 LT1511 LTC1759 LT1769 CHARGER DC INPUT RESET 2.XV 3.3V 5V Rev J 0299 InfoCard 15 Power Supply and Communications Solutions Portable Computer Portable Computer Power Supply and Communications Solutions InfoCard 15 1-Step Power Conversion for Portables Benefits 1-Step for CPU Power LDO LTC1628 5V 2.5A (TOT 3A) LTC1735/LTC1736 Synchronous, VID for CPU Power VBATT 3.3V 3A (TOT 3.5A) LTC1735 OR LTC1736 (VID) LDO Familiar Approach for Existing Portable Designs Power Losses More Evenly Distributed over Multiple Converters 12V 0.2A 2.5V 0.5A 1.XV 9A+ Built-In 5-Bit Adjustable VID VOUT Selection Stronger Gate Drivers and Smaller RSENSE for Highest Efficiency Programmable Fixed Frequency Operation, Synchronizable 1% 0.8V Reference for Accurate Low Voltage Output Very Low Dropout: 99% Duty Cycle Micropower Shutdown, Overvoltage Protection, Latched Short-Circuit Shutdown, Current Limit Foldback, Power Good Output, Optional Programmable Soft Start Pin Compatible with LTC1435 with Minor Component Changes LTC1628 2-Phase Synchronous for System Power LTC1624 1.8V 3A 1-Phase Operation Industry's First 2-Phase Converter IC: Reduces Required Input Caps and Lowers Power Supply Noise Stronger Gate Drivers and Smaller RSENSE for Highest Efficiency New OVP Soft-Latch Function Controls Output in Transient, Overload and Noise Conditions Instead of Latching OFF Built-In 5V and 3.3V Standby Regulators Remain Active in Shutdown 3.0 2-Phase Operation SINGLE PHASE DUAL CONTROLLER RMS CURRENT (A) 2.5 2.0 1.5 2-PHASE DUAL CONTROLLER 1.0 0.5 0 IIN(MEAS) = 2.53ARMS IIN(MEAS) = 1.55ARMS VO1 = 5V/3A VO2 = 3.3V/3A 0 10 20 30 INPUT VOLTAGE (V) 40 1628 F04 Choose the Right Synchronous DC/DC Converter for Your Portable CHARACTERISTICS Number of Controllers 2-Phase LTC1436A Single -- LTC1438 LTC1438-ADJ LTC1538-AUX* LTC1539* Dual -- Dual -- Built-In VID Output Control -- -- -- Reference Voltage/Accuracy 1.19V 1% 1.19V 1% No Sense Resistor Required -- -- -- 1.19V 1% -- -- -- LTC1539 24-SSOP 28-SSOP 28-SSOP 36-SSOP Auxiliary Linear Regulator(s) Synchronizable Packaging LTC1625 LTC1628* LTC1702 LTC1703 LTC1735 LTC1736 Single Dual Dual -- -- Single -- -- LTC1703 LTC1736 1.19V 1% 0.8V 1% 0.8V 1% 0.8V 1% 3.3V & 5V -- -- -- -- -- 28-SSOP 24-SSOP 28-SSOP -- -- 16-SSOP, SO All controllers include: Dual Synchronous N-Channel Drive, Micropower Shutdown, Programmable Soft Start, Remote Output Sensing, 99% Maximum Duty Cycle for low dropout operation, and Wide VIN Range, 3.5V to 36V. * Standby Regulators can be kept alive during shutdown. 2 16-SSOP, SO 24-SS0P Portable Computer Power Supply and Communications Solutions InfoCard 15 2-Step Power Conversion for Portables Desktop/Server Distributed Power Architecture Benefits 2-Step for CPU Power 12V 0.2A LDO LTC1628 5V 2.5A (TOT 3A) VBATT 3.3V 3A (TOT 3.5A) LDO 2.5V 0.5A LTC1702 OR LTC1703 (VID) 1.XV 9A+ Converters Operating Near 50% Duty Cycles Allow Lower Voltage Swings, Less Switching Loss and Higher Switching Frequency Higher Switching Frequency Means Smaller, Lower Cost Components and Faster Transient Response Allows Very Low Output Voltages for New Generations of Microprocessors Symmetrical Transient Response: Fast in Both Directions Lower Heat Generation in the Area of the Microprocessor Easier, More Efficient Optimization of Loop Dynamics over Narrower Input Voltage Range Reduced Peak Currents from Battery Same Overall System Efficiency (See Chart Below) LTC1702/LTC1703 Dual Synchronous VID for CPU Power 5V OR 3.3V 1.8V 3A 2-Phase Dual Controllers for Core and I/O Supplies: Minimize CIN Voltage Mode with No Sense Resistors Required 550kHz Minimizes Component Sizes, <1H Inductor Intel Mobile VID Compliant (LTC1703) 1% Output Accuracy over Line and Load Variations Strong Gate Drivers: To 20A Output per Channel 1-Step vs 2-Step Operating Efficiency VIN = 12V, Typical Load Conditions 1-Step for CPU Power OUTPUT /ILOAD 3.3V/1.5A 2-Step for CPU Power DC/DC OUTPUT POWER EFFICIENCY* POWER LOST OUTPUT/ILOAD DC/DC OUTPUT POWER EFFICIENCY* POWER LOST 5.61W 93% 0.42W 3.3V/1.5A 8.54W 93% 0.64W 5W 95% 0.26W 5V/1A 14.78W 94% 0.94W 1.6V/5.5A 8.8W 86% 1.43W 1.6V/5.5A 8.8W 90% 0.98W 1.8V/1.5A 2.7W 80% 0.68W 1.8V/1.5A 2.7W 92% 0.23W 2.5V/0.2A 5V/1A 0.5W 76% 0.16W 2.5V/0.2A 0.5W 76% 0.16W CCFL 8W 90% 0.89W CCFL 8W 90% 0.89W TOTAL POWER TO LOADS 30W 88.6% 3.84W TOTAL POWER TO LOADS 30W 88.6% 3.84W *Efficiency = Total Output Power x 100% Total Output Power + Total Power Lost Does not include current required to power LTC1702 or LTC1703 for CPU power. 3 Same Overall System Efficiency! Portable Computer Power Supply and Communications Solutions InfoCard 15 LTC1694 SMBus Accelerator Comparison of SMBus Waveforms for the LTC1694 vs Resistor Pull-Up Generally Required to Meet SMBus Rise Time Specs and Maintain Bus Speed Dual SMBus Active Pull-Up Ensures Data Integrity Improves Low State Noise Margin Auto Detect Low Power Standby Mode Tiny 5-Lead SOT-23 Package Wide Supply Voltage Range: 2.7V to 6V See Design Note 193 for Details Tiny SOT-23 Package LTC1694 1V/DIV VCC RPULL-UP = 15.8k SDA SMBus SCL VCC = 5V CLD = 200pF fSMBus = 100kHz 1s/DIV Dual Battery Power Path Controller: LTC1473 Power Management Solution for Single and Dual Battery Notebook Computers Power Path Management for Systems with Multiple DC Sources of up to 30V All N-Channel Switching for Lower Power Losses and Lower Cost Adaptive High Voltage Step-Up Regulator for Gate Drive Capacitor Inrush and Short-Circuit Current Limited Programmable Timer to Limit Switch Dissipation 16-Pin Narrow SO Package LTC1473L Version for 3.3V to 10V Sources Power Management System for Dual Battery Notebook Computer BAT1 MMBD2838LTI LTC1473 DCIN FROM POWER MANAGEMENT P 1F CTIMER 4700pF Si9926DY MBRD340 + 1F + 1mH* MMBD914LTI IN1 GA1 IN2 SAB1 DIODE GB1 TIMER SENSE + V+ SENSE - VGG GA2 SW SAB2 GND GB2 RSENSE 0.04 INPUT OF SYSTEM HIGH EFFICIENCY DC/DC SWITCHING REGULATOR (LTC1435, ETC) + COUT BAT2 Si9926DY *COILCRAFT 1812LS-105XKBC Battery Backup Controllers: LTC1558/LTC1559 Complete Backup Battery System Generates Adjustable Backup Voltage from a Single 1.2V NiCd Button Cell Smart NiCd Charger Minimizes Recharge Time and Maximizes System Efficiency Short-Circuit Protection and Thermal Limiting SSOP and SO Packages The LTC1559 Provides Fixed 3.3V or 5V Backup Voltages Backup Time vs 3.3V Output Load Current 450 1.2V NiCd BACKUP **BATTERY Backup Battery System 22H* + 350 LTC1558-3.3 1F 1 14k 2 3 4 RESET S1 VCC = 3.3V VBAK = 3.78V NiCd CELL CAPACITY = 110mAHrs 400 BACKUP TIME (MINUTES) SW VBAK GND VCC CTL BACKUP FB RESET 8 + 0.1F 100k 7 6 SYSTEM P 5 220k 300 250 MAIN BATTERY 4.5V TO 10V 200 150 Si4431DY R4 221k 1% + 100F 16V x2 LTC1435 SYNCHRONOUS BUCK REGULATOR VCC 3.3V LOAD CURRENT 3A AT NORMAL MODE 30mA AT BACKUP MODE 1558 TA01 100k 1% 100 50 0 0 5 15 20 10 LOAD CURRENT (mA) 25 30 1558 TA02 4 *SUMIDA CD54-22H **SANYO CADNICA N-110AA CONSULT LTC1435 DATA SHEET FOR CIRCUIT APPLICATION INFORMATION Portable Computer Power Supply and Communications Solutions InfoCard 15 High Efficiency Battery Chargers Constant-Voltage/Constant-Current Battery Chargers Charge Li-Ion, NiCd, NiMH: Only One Resistor (or DAC) Required to Program Charging Current Charge Any Number of Cells Up to 21V Small Surface Mount Packages LT1505: Step-Down, 0.5V Dropout Voltage - Precision 5% Charge Current Accuracy - Precision 1% Preset Battery Voltages: 12.3V, 12.6V, 16.4V and 16.8V - AC Adapter Current Limit* - End-of-Charge Flag - Soft Start, Shutdown Control and Sync LT1505-1: Similar to LT1505 but No AC VIN Adapter Current Limit (FROM ADAPTER) LT1510: 1.5A Step-Down, On-Chip Switch - (+) or (-) Terminal Sensing R5 LT1511: 3A Step-Down, On-Chip Switch 4k - AC Adaptor Current Limit* R6 LT1512/ LT1513: 4k - SEPIC Topology: 500kHz - 1.5A Switch (LT1512): 3A Switch (LT1513) LTC1759: Smart Battery Charger--NEW - 100% SMBus Compliant (Rev 1.0) - AC Adapter Current Limit* Battery Charger Selection Guide CHARACTERISTICS Maximum Charging Current Step-Up LT1505 * -- LT1510 1.5A -- 24-SSOP 16-SO LT1511 3A -- LT1512 1A LT1513 2A LTC1759 to 8A -- LT1769 2A - 7-DD 36-SSOP 28-SSOP Step-Down Packaging 24-SSOP SO-8 16-PDIP 8-PDIP *Dependent upon pass element and source chosen. 4A example below. 4A Lithium-Ion Battery Charger DBODY TO SYSTEM POWER M3 Si4435 RS4 0.025 R7 500 C4 0.1F CIN 47F 35V C1 1F 100k VCC BOOST BOOSTC TGATE INFET BGATE SYNC RS1 0.025 VBAT M2 Si4412 COUT 22F 25V x2 D4 MBRS140 VC LT1505 PROG SHDN 3 CELL FLAG VFB CAP 4.2V COMP1 CPROG 1F RPROG 4.93k 1% AGND 12.6V BATTERY RX4 3k 300 4.1V R1 1k C7 0.68F C6 0.1F L1 15H M1 Si4412 5 SW UV C2 0.68F C3 D2 2.2F 1N4148 GBIAS CLN CLP D3 1N4148 RS2 200 1% 0.33F RS3 200 1% PGND BAT2 BAT SENSE SPIN 1505 F01 *U.S. Patent #5,723,970 LCD Display Backlight and Contrast: LT1786F CCFL Inverter with SMBus Brightness Control Choose the Right LCD Illumination Supply Wide Battery Input Range: 4.5V to 30V Grounded Lamp or Floating Lamp Configurations Open Lamp Protection Precision 100A Full-Scale DAC Programming Current with 6-Bit Control DAC Setting Is Retained in Shutdown Micropower Standby Mode: 35A Total Supply Current Characteristics LT1182 LT1183 LT1184F LT1186 LT1786F N/A N/A N/A LCD Contrast Supply LCD Reference Pinned Out Digital Brightness Controller 90% Efficient CCFL with SMBus Control of Lamp Current UP TO 6mA D5 BAT85 LAMP 10 1 2 3 C7, 1F SHUTDOWN ICCFL DIO CCFL VSW BULB BAT 16 12 8 VCC SHDN IOUT 2 + 5 AGND L1 3 14 LT1786F 13 CCFL VC ROYER 6 C5 1000pF 15 4 7 TIE ADR TO GND OR VCC TO SELECT ONE OF THE LT1786F'S TWO SMBUS ADDRESSES CCFL PGND 11 R2 220k + VIN 3.3V C4 OR 5V 2.2F 10 SMBSUS SCL ADR SDA 9 C2 27pF 3kV 6 TO SMBUS HOST 1 4 5 + C3B 2.2F 35V R1 750 C1* 0.068F R3 100k Q2* Q1* L2 100H D1 1N5818 LT1186F * TA01 5 C3A 2.2F 35V BAT 8V TO 28V Portable Computer Power Supply and Communications Solutions InfoCard 15 Micropower Precision Triple Supply Monitor: LTC1326 Multiple Supply Monitoring with Integrated Reset 5V 3.3V 2.9V DC/DC CONVERTER Simultaneously Monitors 5V, 3.3V and Adjustable Voltages Guaranteed Threshold Accuracy: 0.75% Low Supply Current: 20A Power Supply Glitch Immunity Manual Pushbutton Reset Input: Soft Reset Active Low and Active High Reset Outputs 8-Lead SO and MSOP Packages New LTC1326-2.5 Monitors 2.5V, 3.3V and Adjustable Voltages LTC1536 Meets PCI tFAIL Timing Specifications SYSTEM LOGIC 0.1F VCC5 VCC3 VCCA LTC1326 RST PBR PUSHBUTTON RESET GND SRST 1326 TA01 SMBus Dual High Side Switches: LTC1623/LTC1710 VCC 2.7V TO 5.5V SMBus Controlled Dual-Load Switch 8 10F 1 10F SW0 10F * VCC CLOCK GA CLK DATA Q1 GB FROM SMBus Q2 DATA LTC1623 (PROGRAMMABLE) VCC 2.7V TO 5.5V (FROM SMBus) SW0D 0V TO VCC AD1 (PROGRAMMABLE) AD0 AD1 GND LOAD1 5 6 2 LOAD 1 CHARGE PUMP 3 7 SW1 LOAD2 LOAD 2 LTC1710 4 1710 TA01 * SILICONIX Si69260Q 1623 TA01 SMBus and I2CTM Compatible Built-In Gate Drive Charge Pumps Low Standby Current: 17A 8-Lead MSOP and SO Packages Peripheral Control and Power Plane Switching LTC1623: Drives External N-Channel MOSFETs LTC1710: Dual Internal N-Channel MOSFETs I2C is a trademark of Philips Electronics N.V. Protected PCMCIA Interface: LTC1472 VCC and VPP Switching in a Single IC Built-In Current Limit and Thermal Shutdown Extremely Low RDS(ON) NMOS Switches 1A Quiescent Current in Standby Narrow SO Package PCMCIA MEMBER COMPANY Linear Technology PCMCIA Product Family DEVICE DESCRIPTION PACKAGE LT1312 Single PCMCIA VPP Driver/Regulator 8-Pin SO LT1313 Dual PCMCIA VPP Driver/Regulator 16-Pin SO* LTC1314 Single PCMCIA Switch Matrix 14-Pin SO LTC1315 Dual PCMCIA Switch Matrix 24-Pin SSOP LTC1470 Protected VCC 5V/3.3V Switch Matrix 8-Pin SO LTC1471 Dual Protected VCC 5V/3.3V Switch Matrix 16-Pin SO* LTC1472 Protected VCC and VPP Switch Matrix 16-Pin SO* *Narrow Body Low Power 5V RS232 Transceivers Uses Small Capacitors: 0.1F, 0.2F CMOS Compatible Low Power: 60mW 3V Logic Compatible Operates to 120kBaud 1A Supply Current in Shutdown Mode Receiver Keep-Alive in Shutdown SO and SSOP Packages V 15k ESD SUPPLY VOLTAGE 5 3V OR 5V LOGIC 5 TYP Rx POWER ACTIVE DISS(mW) IN SHDN 60 0 IQ IN SHDN (A) 1 5 5 30 1 60 3 3 1.5 0 1 -- LTC1327 DRIVER DISABLE 10kV ESD 15kV 0.1F CAPS 15kV * DEVICE TYPE LT1137A LT1237 5 5 1.5 0 1 -- LTC1337 5&3 3 1.5 0 or 5 0.2 or 10 -- LTC1348 3 3 1.5 2 35 -- LTC1350 5 5 40 5 1 LT1537 *Requires one 1F capacitor Linear Technology Corporation * 1630 McCarthy Blvd. * Milpitas, CA 95035-7417 * (408) 432-1900 * www.linear-tech.com * Literature Only: 1-800-4-LINEAR ic15fj (c)1994 LT/TP 0299 3K