19-2890; Rev 1; 10/03 KIT ATION EVALU LE B A IL A AV Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN TEMP RANGE PIN-PACKAGE TOP MARK MAX1508ETA -40°C to +85°C 8 Thin DFN-EP* AHF MAX1508YETA -40°C to +85°C 8 Thin DFN-EP* AIL MAX1508ZETA -40°C to +85°C 8 Thin DFN-EP* AIK PART *EP = Exposed paddle. Pin Configuration TOP VIEW EN (EN) Cellular and Cordless Phones PDAs Digital Cameras and MP3 Players USB Appliances Charging Cradles and Docks Bluetooth™ Equipment Ordering Information ACOK Applications ♦ Active-High Charge Enable (EN) (MAX1508Y) BATT The MAX1508 achieves high flexibility by providing an adjustable fast-charge current by an external resistor. Other features include the charging status (CHG) of the battery, an active-low control input (EN) for the MAX1508 and MAX1508Z (active-high control input for the MAX1508Y), and an active-low input power-source detection output (ACOK). The MAX1508 accepts a +4.25V to +13V supply, but disables charging when the input voltage exceeds +7V to protect against unqualified or faulty AC adapters. The MAX1508 operates over the extended temperature range (-40°C to +85°C) and is available in a compact 8-pin thermally enhanced 3mm x 3mm thin DFN package with 0.8mm height. ♦ Input Power-Source Detection Output (ACOK) ♦ Soft-Start Limits Inrush Current ♦ No Prequalification State for the MAX1508Y and MAX1508Z ♦ Charge Status Output (CHG) for LED or Microprocessor Interface ♦ Small 3mm x 3mm 8-Pin Thin DFN Package, 0.8mm High ♦ Active-Low Charge Enable (EN) (MAX1508 and MAX1508Z) CHG Proprietary thermal-regulation circuitry limits the die temperature to +100°C when fast charging or while exposed to high ambient temperatures, allowing maximum charging current without damaging the IC. Features ♦ Stand-Alone Linear 1-Cell Li+ Battery Charger ♦ No External FET, Reverse-Blocking Diode, or Current-Sense Resistor Required ♦ Programmable Fast-Charge Current (0.8A max) ♦ Proprietary Die-Temperature Regulation Control (+100°C) ♦ +4.25V to +13V Input Voltage Range with Input Overvoltage Protection (OVP) Above +7V ♦ Charge-Current Monitor for Fuel Gauging ♦ Low Dropout Voltage—130mV at 0.425A 8 7 6 5 MAX1508 MAX1508Y MAX1508Z 1 2 3 4 VL IN GND ISET Typical Operating Circuit appears at end of data sheet. 3mm x 3mm THIN DFN ( ) ARE FOR THE MAX1508Y ONLY Bluetooth is a trademark of Ericsson. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX1508/MAX1508Y/MAX1508Z General Description The MAX1508 is an intelligent, stand-alone constant-current, constant-voltage (CCCV), thermally regulated linear charger for a single-cell lithium-ion (Li+) battery. The MAX1508 integrates the current-sense circuit, MOS pass element, and thermal-regulation circuitry, and also eliminates the reverse-blocking Schottky diode, to create the simplest and smallest charging solution for hand-held equipment. The MAX1508 functions as a stand-alone charger to control the charging sequence from the prequalification state through fast-charge, top-off charge, and fullcharge indication. The MAX1508Y and MAX1508Z eliminate the prequalification state to allow startup into a load without a battery. MAX1508/MAX1508Y/MAX1508Z Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN ABSOLUTE MAXIMUM RATINGS IN, CHG to GND .....................................................-0.3V to +14V VL, BATT, ISET, EN, EN, ACOK to GND ..................-0.3V to +6V VL to IN...................................................................-14V to +0.3V IN to BATT Continuous Current.............................................0.9A Continuous Power Dissipation (TA = +70°C) 8-Pin TDFN (derate 24.4mW/°C above +70°C) .........1951mW Short-Circuit Duration.................................................Continuous Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C 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 (VIN = 5V, VBATT = 4.0V, ACOK = EN = CHG = unconnected (for the MAX1508 and MAX1508Z), EN = VL (for the MAX1508Y), RISET = 2.8kΩ to GND, CVL = 0.47µF, BATT bypassed to GND with 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER CONDITIONS Input Voltage Range Overvoltage Lockout Trip Point 4.25 6.50 V 60 VIN - VBATT, VIN falling 15 30 45 VIN rising 6.5 7 7.5 VIN hysteresis 0.11 Disabled, EN = VL (MAX1508/MAX1508Z), EN = GND (MAX1508Y) 1 2 0.8 1.5 IVL = 100µA 3.3 IVL = 100µA to 2mA -71 VL Temperature Coefficient IVL = 100µA -2 VIN rising 2.95 Hysteresis 0.17 EN = VL (MAX1508/MAX1508Z), EN = GND (MAX1508Y) 4 10 Maximum RMS Charge Current 0.8 VBATT rising µA A TA = 0°C to +85°C 4.162 4.2 4.238 TA = -40°C to +85°C 4.150 4.2 4.250 4.4 4.67 4.9 _______________________________________________________________________________________ mV V 10 BATT Removal Detection Threshold mA mV/°C 3 IBATT = 0 V V -200 VIN = 0 to 4V Battery Regulation Voltage mV 0.065 VL Load Regulation 2 V 40 VL Output Voltage BATT Input Current UNITS 13 20 OFF state (VIN = VBATT = 4.0V) VL Undervoltage Lockout Trip Point MAX VIN - VBATT, VIN rising Charging (IIN - IBATT) IN Input Current TYP 0 Input Operating Range ACOK Trip Point, IN MIN V V Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN (VIN = 5V, VBATT = 4.0V, ACOK = EN = CHG = unconnected (for the MAX1508 and MAX1508Z), EN = VL (for the MAX1508Y,) RISET = 2.8kΩ to GND, CVL = 0.47µF, BATT bypassed to GND with 1µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER CONDITIONS MIN BATT Removal Detection-Threshold Hysteresis Minimum BATT Bypass Capacitance Fast-Charge Current-Loop System Accuracy VBATT = 3.5V Precharge Current System Accuracy Percentage of the fast-charge current, VBATT = 2.2V (MAX1508 only) TYP MAX UNITS 200 mV 1 µF/A 478 520 562 mA 5 10 15 % Die-Temperature-Regulation Set Point °C 100 VBATT Precharge Threshold Voltage VBATT rising (MAX1508 only) 2.3 2.5 2.7 V Current-Sense Amplifier Gain, ISET to IBATT in Fast-Charge Mode IBATT = 500mA, VISET = 1.4V 0.880 0.958 1.035 mA/A 200 mV Regulator Dropout Voltage (VIN - VBATT ) VBATT = 4.1V, IBATT = 425mA EN or EN Logic Input Low Voltage 4.25V < VIN < 6.5V EN or EN Logic Input High Voltage 4.25V < VIN < 6.5V 1.3 EN or EN Internal Pulldown Resistor (MAX1508 and MAX1508Z only) 100 200 400 kΩ CHG Output Low Current V CHG = 1V 5 12 20 mA CHG Output High Leakage Current V CHG = 13V ACOK Output Low Voltage IACOK = 0.5mA ACOK Output High Leakage Current V ACOK = 5.5V Full-Battery Detection Current Threshold (as a Percentage of the Fast-Charge Current) IBATT falling 130 0.52 TA = +25°C 1 TA = +85°C 0.002 0.4 TA = +25°C 1 TA = +85°C 0.002 5 V V 10 15 µA V µA % Note 1: Limits are 100% production tested at TA = +25°C. Limits over operating temperature range are guaranteed through correlation using statistical quality control (SQC) methods. _______________________________________________________________________________________ 3 MAX1508/MAX1508Y/MAX1508Z ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (VIN = 5V, VBATT = 4.0V, ACOK = EN = CHG = unconnected, EN = VL (MAX1508Y), RISET = 2.8kΩ to GND, CIN = 1µF, CBATT = 1µF, CVL = 0.47µF, TA = +25°C, unless otherwise noted.) 1.0 0.5 EN = VL (MAX1508/1508Z) EN = GND (MAX1508Y) 1.5 1.0 0.5 4 6 8 10 12 0 2 4 6 8 0 1 2 3 4 INPUT VOLTAGE (V) INPUT VOLTAGE (V) BATTERY VOLTAGE (V) CHARGE CURRENT vs. INPUT VOLTAGE CHARGE CURRENT vs. INPUT-VOLTAGE HEADROOM BATTERY REGULATION VOLTAGE vs. TEMPERATURE INPUT VOLTAGE (V) VIN - VBATT (V) 500 480 4.186 -40 -15 10 35 60 MAX1508 toc09 600 500 VBATT = 3.6V 400 300 200 100 420 0 85 VBATT = 4.0V 700 440 60 4.189 800 460 35 4.192 900 CHARGE CURRENT (mA) 520 10 4.195 1000 MAX1508 toc07 540 AMBIENT TEMPERATURE (°C) 4.198 CHARGE CURRENT vs. AMBIENT TEMPERATURE 560 -15 4.201 TEMPERATURE (°C) CHARGE CURRENT vs. AMBIENT TEMPERATURE -40 4.204 4.180 0 0.04 0.08 0.12 0.16 0.20 0.24 0.28 0.32 0.36 0.40 580 4.207 4.183 0 1 2 3 4 5 6 7 8 9 10 11 12 13 600 4.210 MAX1508 toc06 600 550 500 450 400 350 300 250 200 150 100 50 0 BATTERY REGULATION VOLTAGE (V) CHARGE CURRENT (mA) MAX1508 toc04 600 550 500 450 400 350 300 250 200 150 100 50 0 CHARGE CURRENT (mA) 200 12 10 MAX1508 toc05 2 300 0 0 0 400 100 0 4 500 CHARGE CURRENT (mA) 1.5 600 MAX1508 toc02 2.0 DISABLED-MODE SUPPLY CURRENT (mA) IBATT = 0 MAX1508 toc01 2.0 SUPPLY CURRENT (mA) CHARGE CURRENT vs. BATTERY VOLTAGE DISABLED-MODE SUPPLY CURRENT vs. INPUT VOLTAGE MAX1508 toc03 SUPPLY CURRENT vs. INPUT VOLTAGE CHARGE CURRENT (mA) MAX1508/MAX1508Y/MAX1508Z Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN RISET = 1.87kΩ -40 -15 10 35 60 AMBIENT TEMPERATURE (°C) _______________________________________________________________________________________ 85 85 Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN PIN NAME 1 VL Internally Generated Logic Supply for Chip. Bypass VL to GND with a 0.47µF capacitor. 2 IN Input Supply Voltage. Bypass IN to GND with a 1µF capacitor to improve line noise and transient rejection. 3 GND Ground. Connect GND and exposed pad to a large copper trace for maximum power dissipation. 4 ISET Charge-Current Program and Fast-Charge Current Monitor. Output current from ISET is 0.958mA per amp of battery charging current. The charging current is set by connecting a resistor from ISET to GND. Fast-charge current = 1461V / RISETΩ. EN Logic-Level Enable Input (MAX1508/1508Z). Drive EN high to disable charger. Pull EN low or float for normal operation. EN has an internal 200kΩ pulldown resistor. EN Logic-Level Enable Input (MAX1508Y). Drive EN low to disable charger. Drive EN high for normal operation. 6 ACOK Input Power-Detection Output. The open-drain ACOK output asserts low when +4.25V < VIN < +7V and VIN VBATT > 40mV. ACOK requires an external 100kΩ pullup resistor. ACOK is high impedance in shutdown. 7 BATT Li+ Battery Connection. Bypass BATT to GND with a capacitor of at least 1µF per ampere of charge current. 8 CHG Charging Indicator, Open-Drain Output. CHG goes low (and can turn on an LED) when charging begins. CHG is high impedance when the battery current drops below 10% of the fast-charging current, or when EN is high. Connect a pullup resistor to the µP’s I/O voltage when interfacing with a µP logic input. — PAD Exposed Pad. Connect exposed pad to a large copper trace for maximum power dissipation. The pad is internally connected to GND. 5 FUNCTION Detailed Description The MAX1508 charger uses voltage, current, and thermal-control loops to charge a single Li+ cell and to protect the battery (Figure 1). When a Li+ battery with a cell voltage below 2.5V is inserted, the MAX1508 charger enters the prequalification stage where it precharges that cell with 10% of the user-programmed fast-charge current. There is no prequalification stage for the MAX1508Z and MAX1508Y in order to allow startup into a load without a battery. The CHG indicator output is driven low (Figure 2) to indicate entry into the prequalification state. Once the cell has passed 2.5V, the charger soft-starts before it enters the fast-charge stage. The fast-charge current level is programmed through a resistor from ISET to ground. As the battery voltage approaches 4.2V, the charging current is reduced. If the battery current drops to less than 10% of the fast-charging current, the CHG indicator goes high impedance, signaling the battery is fully charged. At this point the MAX1508 enters a constant voltage-regulation mode to maintain the battery at full charge. If, at any point while charging the battery, the die temperature approaches +100°C, the MAX1508 reduces the charging current so the die temperature does not exceed the temperature-regulation set point. The thermal-regulation loop limits the MAX1508 die temperature to +100°C by reducing the charge current as necessary (see the Thermal Regulation section). This feature not only protects the MAX1508 from overheating, but also allows higher charge current without risking damage to the system. MAX1508/MAX1508Z EN Charger Enable Input EN is a logic input (active low) to enable the charger. Drive EN low, leave floating, or connect to GND to enable the charger control circuitry. Drive EN high to disable the charger control circuitry. EN has a 200kΩ internal pulldown resistance. MAX1508Y EN Charger Enable Input EN is a logic input (active high) to enable the charger. Drive EN high to enable the charger control circuitry. Drive EN low to disable the charger control circuitry. ACOK Output Active-Low Output. The open-drain ACOK output asserts low when +4.25V < VIN < +7V and VIN - VBATT > 40mV. ACOK requires an external 100kΩ pullup resistor to the system’s logic I/O voltage. ACOK is high impedance in shutdown. VL Internal Voltage Regulator The MAX1508 linear charger contains an internal linear regulator available on the VL output pin. VL requires a 0.47µF ceramic bypass capacitor to GND. VL is regulated to 3.3V whenever the input voltage is above 3.5V. _______________________________________________________________________________________ 5 MAX1508/MAX1508Y/MAX1508Z Pin Description MAX1508/MAX1508Y/MAX1508Z Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN CHG Charge Indicator Output Soft-Start CHG is an open-drain current source for indicating charge status. Table 1 describes the state of CHG during different stages of operation. An analog soft-start algorithm activates when entering fast-charge mode. When the prequalification state is complete (VBATT exceeds +2.5V), the charging current ramps up in 3ms to the full charging current. This reduces the inrush current on the input supply. Since the MAX1508Y and MAX1508Z do not have a prequalification state, they automatically enter soft-start upon activation. CHG is a nominal 12mA current source suitable for driving a charge-indication LED. If the MAX1508 is used in conjunction with a microprocessor, a pullup resistor to the logic I/O voltage allows CHG to indicate charge status to the µP instead of driving an LED. MAX1508 BATT IN OUTPUT DRIVER, CURRENT SENSE, AND LOGIC VREF ISET TEMPERATURE SENSOR IREF 100°C IN IN VI/O VL VL 0.47µF BATT ACOK VLUVLO REF IN VINOVLO VLOK N ON INOK LOGIC REFOK CHG REFOK EN (EN) N 200kΩ MAX1508 AND MAX1508Z ONLY GND ( ) ARE FOR MAX1508Y ONLY Figure 1. Functional Diagram 6 _______________________________________________________________________________________ Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN MAX1508/MAX1508Y/MAX1508Z ASYNCHRONOUS FROM ANYWHERE VIN > 7V + VBATT > VIN + EN = HIGH SHUTDOWN VBATT < 2.5V D AN D 7V T AN < T V IN > V BA V IN = LOW EN PRECHARGE 10% CHARGE CURRENT LED = ON (MAX1508 ONLY) CHARGER = OFF LED = OFF VIN > 7V + VBATT > VIN + EN = HIGH VBATT < 2.4V VBATT > 2.5V FAST CHARGE 100% CHARGER CURRENT LED = ON ICHARGE < 10% OF ISET ICHARGE > 20% OF ISET FULL BATT LED = OFF FULL BATT CONTINUES TO REGULATE BATT UP TO 4.2V Figure 2. Charge State Diagram Applications Information Charge-Current Selection The maximum charging current is programmed by an external RISET resistor connected from ISET to GND. Select the RISET value based on the following formula: IFAST = 1461V / RISETΩ where IFAST is in amps and RISET is in ohms. ISET can also be used to monitor the fast-charge current level. The output current from the ISET pin is 0.958mA per amp of charging current. The output voltage at ISET is proportional to the charging current as follows: VISET = (ICHG x RISET) / 1044 The voltage at ISET is nominally 1.4V at the selected fast-charge current, and falls with charging current as the cell becomes fully charged. Thermal Regulation The MAX1508 features a proprietary thermal-regulation circuit to protect both the IC and the system from excessive heat. When the MAX1508’s die temperature reaches +100°C, the charge current is reduced to prevent any additional increase in the die temperature. An active thermal loop does not indicate a fault condition. Thermal regulation allows the MAX1508 to provide continuous charge to the battery under adverse conditions without causing excessive power dissipation. _______________________________________________________________________________________ 7 MAX1508/MAX1508Y/MAX1508Z Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN Capacitor Selection Connect a ceramic capacitor from BATT to GND for proper stability. Use a 1µF X5R ceramic capacitor for most applications. Connect a 1µF ceramic capacitor from IN to GND. Use a larger input bypass capacitor for high input voltages or high charging currents to reduce supply noise. Connect a 0.47µF ceramic capacitor from VL to GND. Thermal Considerations The MAX1508 is in a thermally enhanced thin DFN package with exposed paddle. Connect the exposed paddle of the MAX1508 to a large copper ground plane to provide a thermal contact between the device and the circuit board. The exposed paddle transfers heat away from the device, allowing the MAX1508 to charge the battery with maximum current, while minimizing the increase in die temperature. DC Input Sources The MAX1508 operates from well-regulated DC sources. The full-charging input voltage range is 4.25V to 7V. The device can stand up to 13V on the input without damage to the IC. If VIN is greater than 7V, then the MAX1508 stops charging. An appropriate power supply must provide at least 4.25V when sourcing the desired peak charging current. It also must stay below 6.5V when unloaded. Application Circuits Stand-Alone Li+ Charger The MAX1508 provides a complete Li+ charging solution. The Typical Operating Circuit at the end of the data sheet shows the MAX1508 as a stand-alone Li+ battery charger. The 2.8kΩ resistor connected to ISET sets a charging current of 520mA. The LED indicates when either fast-charge or precharge qualification has begun. When the battery is full, the LED turns off. Microprocessor-Interfaced Charger Figure 3 shows the MAX1508 as a µP-cooperated Li+ battery charger. The MAX1508 and MAX1508Z start charging the battery when EN is low. The µP can drive EN high to disable the charger (MAX1508 and MAX1508Z). The MAX1508’s ACOK output indicates the presence of a valid AC adapter to the µP. CHG can be used to detect the charge status of a battery. By monitoring VISET, the system can measure the charge current. USB-Powered Li+ Charger The universal serial bus (USB) provides a high-speed serial communication port as well as power for the remote device. The MAX1508 can be configured to charge its battery at the highest current possible from the host port. Figure 4 shows the MAX1508 as a USB battery charger. To make the circuit compatible with either 100mA or 500mA USB ports, the circuit initializes at 95mA charging current. The microprocessor then interrogates the host to determine its current capability. If the host port is capable, the charging current is increased to 435mA. The 435mA current was chosen to avoid exceeding the 500mA USB specification. Layout and Bypassing Connect a 1µF ceramic input capacitor as close to the device as possible. Provide a large copper GND plane to allow the exposed paddle to sink heat away from the device. Connect the battery to BATT as close to the device as possible to provide accurate battery voltage sensing. Make all high-current traces short and wide to minimize voltage drops. For an example layout, refer to the MAX1507/MAX1508 evaluation kit layout. Chip Information TRANSISTOR COUNT: 1812 PROCESS: BiCMOS Table 1. CHG States EN (MAX1508/MAX1508Z) EN (MAX1508Y) VIN VBATT CHG STATE X X VBATT VIN 0 Hi-Z Shutdown Low High 4.25V ≤ VIN ≤ 7V < 2.5V 10% of IFAST Low Prequalification Low High IFAST* Low Fast Charge High 4.25V ≤ VIN ≤ 7V 4.25V ≤ VIN ≤ 7V ≥ 2.5V Low 4.2V 10% of IFAST Hi-Z Full Charge Low High >7V X 0 Hi-Z Overvoltage 0 Hi-Z Disabled High Low X X X = Don’t care. *IFAST is reduced as necessary to maintain the die temperature at +100°C. 8 IBATT _______________________________________________________________________________________ Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN MAX1508/MAX1508Y/MAX1508Z 4.2V Li+ IN AC/DC ADAPTER BATT 1µF 1µF MAX1508 CHG MAX1508Y GND MAX1508Z VI/O SYSTEM VL ACOK ISET EN (EN) 0.47µF 2.8kΩ CHARGE-CURRENT MONITOR VI/O LOW: CHARGE, HIGH: FULL OR OFF ( ) ARE FOR THE MAX1508Y ONLY Figure 3. µP-Interfaced Li+ Battery Charger 4.2V Li+ VBUS IN BATT 1µF 1µF GND CHG MAX1508 MAX1508Y MAX1508Z VL VI/O GND SYSTEM ACOK 0.47µF USB PORT EN (EN) ISET 15.4kΩ HIGH: 435mA, LOW: 95mA 4.3kΩ N VI/O D+ D( ) ARE FOR THE MAX1508Y ONLY Figure 4. USB Battery Charger _______________________________________________________________________________________ 9 Typical Operating Circuit INPUT 4.25V TO 13V IN BATT Li+ 4.2V 1µF 1µF MAX1508 MAX1508Y MAX1508Z CHG ISET OFF ACOK EN (EN) ON VL 2.80kΩ GND 0.47µF ( ) ARE FOR THE MAX1508Y ONLY Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 6, 8, &10L, QFN THIN.EPS MAX1508/MAX1508Y/MAX1508Z Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN L A D D2 A2 PIN 1 ID 1 N 1 C0.35 b E PIN 1 INDEX AREA [(N/2)-1] x e REF. E2 DETAIL A e k A1 CL CL L L e e A DALLAS SEMICONDUCTOR PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 6, 8 & 10L, TDFN, EXPOSED PAD, 3x3x0.80 mm NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY APPROVAL DOCUMENT CONTROL NO. 21-0137 10 ______________________________________________________________________________________ REV. D 1 2 Linear Li+ Battery Charger with Integrated Pass FET, Thermal Regulation, and ACOK in 3mm x 3mm TDFN COMMON DIMENSIONS SYMBOL A MIN. MAX. 0.70 0.80 D 2.90 3.10 E 2.90 3.10 A1 0.00 0.05 L k 0.20 0.40 0.25 MIN. A2 0.20 REF. PACKAGE VARIATIONS PKG. CODE N D2 E2 e JEDEC SPEC b T633-1 6 1.50–0.10 2.30–0.10 0.95 BSC MO229 / WEEA 0.40–0.05 1.90 REF T833-1 8 1.50–0.10 2.30–0.10 0.65 BSC MO229 / WEEC 0.30–0.05 1.95 REF T1033-1 10 1.50–0.10 2.30–0.10 0.50 BSC MO229 / WEED-3 0.25–0.05 2.00 REF [(N/2)-1] x e DALLAS SEMICONDUCTOR PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 6, 8 & 10L, TDFN, EXPOSED PAD, 3x3x0.80 mm APPROVAL DOCUMENT CONTROL NO. 21-0137 REV. D 2 2 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX1508/MAX1508Y/MAX1508Z Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.)