MP2603EJ-LF-Z

MP2603 Single-Cell 150mA Linear Li-Ion Battery Charger The Future of Analog IC Technology FEATURES DESCRIPTION • • • • • • • • • • • The MP2603 is a low cost single cell Li-ion battery charger IC suitable for low charge current applications. It features constant current (CC) and constant voltage (CV) charging modes with programmable charge current (50mA–150mA), trickle charge and charge status indication. The MP2603 is enabled with an input supply voltage greater than 3.5V. The charger IC is disabled when unplugged from the AC adaptor. To minimize the charger’s total solution cost, the MP2603 does not need an external reverse blocking diode, a precision current-sense resistor or a compensation capacitor at the output. MP2603 is available in a 5-pin TSOT23 package. APPLICATIONS • • • • • EVALUATION BOARD REFERENCE Board Number Dimensions EV2603EJ-00B 1.4”X x 1.1”Y x 0.5”Z VIN Surge Up to 25V 0.75% VBATT Accuracy Low Battery Reverse Current, (< 1uA) Programmable Charge Current Over Temperature Protection Over Current Protection Charge Status Indication Over Charge Protection No External Sense Resistor Required No External Reverse Blocking Diode Required No Output Capacitor Required for Stability Bluetooth Headset MP3 Players Mini PDAs Cell Phones Digital Cameras All MPS parts are lead-free and adhere to the RoHS directive. For MPS green status, please visit MPS website under Products, Quality Assurance page. “MPS” and “The Future of Analog IC Technology” are registered trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION VIN 4.5V - 5.5V 4 2 IN BATT 5 To System BATT MP2603 GND RPGM 1 MP2603 Rev. 1.01 1/31/2013 IPGM CHGZ 3 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 1 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER ORDERING INFORMATION Part Number* Package TSOT23 MP2603EJ Top Marking M3 * For Tape & Reel, add suffix –Z (e.g. MP2603EJ–Z). For RoHS compliant packaging, add suffix –LF (e.g. MP2603EJ–LF–Z) PACKAGE REFERENCE TOP VIEW IPGM 1 GND 2 CHGZ 3 ABSOLUTE MAXIMUM RATINGS (1) IN to GND .....................................-0.3V to +25V All Other Pins ..............................-0.3V to +6.5 V (2) Continuous Power Dissipation (TA = +25°C) ........................................................... 0.57W Junction Temperature ...............................140°C Lead Temperature ....................................260°C Storage Temperature............... -65°C to +150°C Recommended Operating Conditions (3) Supply Voltage VIN ......................4.75V to 5.25V Operating Temperature.............. -20°C to +85°C MP2603 Rev. 1.01 1/31/2013 5 BATT 4 IN Thermal Resistance (4) θJA θJC TSOT23 .................................220 .... 110 .. °C/W Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 2 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER ELECTRICAL CHARACTERISTICS VIN = 5V, TA = +25°C, unless otherwise noted. Parameter Supply Current from VIN Input Under Voltage Lockout Battery Reverse Current to BATT Pin Battery Voltage Regulation Constant Current Regulation (5) Trickle Charge Current Trickle Threshold Voltage Trickle Voltage Hysteresis CHGZ Low-to-High Threshold CHGZ Sink Current Dropout Voltage Thermal Limit (6) Overcharge Protection Symbol Condition ISUPPLY ICHG = 0A Input Falling VBATT = 4V, Input = GND or Float VBATT ICHG = 5mA, 0°C < TA < +50°C VIN = 5V, VBATT = 3.8V, RPGM = 2.5kΩ VIN = 5V, VBATT = 3.8V, RPGM = 1.5kΩ – 7.2kΩ, ICHG –20°C < TA < +85°C VIN = 5V, VBATT = 3.8V, 7.2kΩ < RPGM ≤ 12.4kΩ –20°C < TA < +85°C VIN = 5V, VBATT = 2.3V Pin Voltage = 0.2V ICHG = 150mA, VBATT = 3.8V Min 1.8 Typ 0.5 2.3 Max 2.8 Units mA V 2 µA 4.16 4.20 4.24 V 135 150 165 mA 90 100 110 %ICHG 130 %ICHG 15 2.75 %ICHG V mV %ICHG mA mV °C µA 70 5 2.45 3 5 10 2.60 190 10 17 640 130 VBATT = 4.25V 0 Notes: 5) ICHG is the target preprogrammed charge current (Die temperature below 110°C). 6) Guaranteed by design. MP2603 Rev. 1.01 1/31/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 3 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER PIN FUNCTIONS Pin # 1 2 3 4 5 Name Description Charge Current Program Pin. Connect to a resistor to program the charge current. Do not connect a capacitor to this pin. GND Chip Ground Return. Connect to the system ground. Open-Drain Charge Status Indication Pin. It can be connected through an LED and a 430Ω CHGZ resistor to BATT for visual indication or through a 1kΩ resistor to BATT for use with a microcontroller. Input Supply Pin. Connect to a 5V (±5%) power supply. The maximum surge voltage must be IN less than 25V. Decouple this pin with a minimum of 0.1µF ceramic capacitor. BATT Charger Output. Connect to the battery. Placing a capacitor to GND on this pin is optional. IPGM BLOCK DIAGRAM IN 4 R 5 IPGM BATTERY CHARGE CONTROL BATT 3 CHGZ 1 GND 2 Figure 1—Functional Block Diagram MP2603 Rev. 1.01 1/31/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 4 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER TYPICAL PERFORMANCE CHARACTERISTICS VIN = 5V, C1 = 1µF, C2 = 1µF, TA = +25°C, unless otherwise noted. Charge Current vs Battery Votlage 0.18 4.0 0.16 VBATT 3.5 0.14 3.0 0.12 2.5 0.10 2.0 IBATT 0.08 1.5 0.06 1.0 0.04 0.5 0.02 0 0 200 400 600 800 CHARGE TIME (MIN) 0.18 CHARGE CURRENT (A) 4.5 BATTERY CURRENT (A) BATTERY VOLTAGE (V) Battery Charge Curve 0.15 0.12 0.09 0.06 0.03 0.00 0.5 0.00 4.5 Charge Current vs Battery Voltage Battery Voltage vs Input Voltage 0.20 4.24 CHARGE CURRENT (A) 4.30 BATTERY VOLTAGE (V) 1.5 3.5 2.5 BATTERY VOLTAGE (V) ICHG = 0mA 4.18 4.12 ICHG = 45mA 4.06 4.00 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 INPUT VOLTAGE (V) 0.18 VIN = 8V 0.16 0.14 VIN = 5V 0.12 0.10 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 BATTERY VOLTAGE (V) Charge Current vs RPGM Resistance Charge Current vs Input Voltage 0.170 10 CHARGE CURRENT (A) 9 0.162 8 VBATT = 3.4V 7 0.154 0.146 6 5 VBATT = 3.8V 4 3 0.138 2 1 0.130 4.5 MP2603 Rev. 1.01 1/31/2013 5.0 5.5 6.0 6.5 INPUT VOLTAGE (V) 7.0 0 40 60 80 100 120 140 160 CHARGE CURRENT (mA) www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 5 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER TYPICAL PERFORMANCE CHARACTERISTICS (continued) VIN = 5V, C1 = 1µF, C2 = 1µF, TA = +25°C, unless otherwise noted. Reverse Current vs Forward Leakage Current Battery Votlage 0.80 0.8 0.75 0.7 0.70 0.6 0.65 0.60 0.5 0.55 0.4 0.50 0.3 0.45 0.2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 INPUT VOLTAGE (V) 0.40 2.5 4.25 0.156 4.22 BATTERY VOLTAGE (v) CHARGE CURRENT (A) 0.160 0.148 0.144 2.8 3.1 3.4 3.7 4 BATTERY VOLTAGE (V) 4.19 4.16 4.13 VIN = 5V 0.140 -50 -25 0 25 50 75 AMBIENT TEMPERATURE (0C) VIN = 5V 4.10 -50 Power-On MP2603 Rev. 1.01 1/31/2013 -25 0 25 50 75 AMBIENT TEMPERATURE (oC) Power-Off VIN 2V/div. VBATT 2V/div. VIN 2V/div. VBATT 2V/div. IBATT 0.1A/div. IBATT 0.1A/div. 2ms/div. 4.3 Battery Voltage vs Temperature Charge Current vs Temperature 0.152 VIN = 5V 10ms/div. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 6 MP2603 – SINGLE CELL 150mA LINEAR LI-ION BATTERY CHARGER OPERATION VBATT IBATT Soft-Start Time 90% of ICHG 2.6V IBATT 10% of ICHG Trickle Charging CC Mode CV Mode Charge End Figure 2—MP2603 Typical Charging Procedure The charge current, ICHG, is programmed by connecting a resistor (RPGM) from the IPGM pin to ground. The relationship of the charge current and the programming resistance is established by the following equation and graph. The Table1 lists the typical application setting of Ichg. ICHG = 150mA × 2.53kΩ RPGM Table 1— RPGM and ICHG Relationship RPGM (kΩ) ICHG (mA) 12.4 7.2 4.99 3.74 2.5 30 52 76 101 151 MP2603 Rev. 1.01 1/31/2013 150 120 90 60 30 0.1 0.2 0.3 0.4 0.5 ICHG Thermal Regulation Charge Start 180 0 0.0 VBATT 4.2V Charge Current vs 1/RPGM Resistance CHARGE CURRENT (mA) The MP2603 is enabled with a minimum input supply voltage of 3.5V. This power supply must also be higher than both the UVLO threshold and the battery voltage. There is an internal 500kΩ pull-down resistor connecting the IN and GND pins. The MP2603 provides CC/CV charge algorithms to automatically change modes depending on the battery status. Figure 2 shows the typical charging procedure for the MP2603. (1) Figure 3— Charge Current vs 1/RPGM Resistance When battery voltage falls below the trickle threshold (2.6V), charge current is limited to 10% of the programmed value to trickle charge the fully depleted battery. After the battery voltage reaches 2.6V, the charger begins to charge at the constant current of the programmed value (ICHG). This is referred to as Constant Current (CC) mode. Once the battery voltage reaches 4.2V, the charger will operate in the Constant Voltage (CV) mode until the battery is fully charged. Charge Status (CHGZ) The open-drain CHGZ pin monitors charge status by connecting to VBATT through an LED and/or a resistor. The end-of-charge, or battery full, is indicated by the CHGZ pin changing from LOW to HIGH (i.e. LED turns off) when ICHG decreases to 10% of the programmed value. Thermal Protection To prevent overheating, the MP2603 automatically limits the die temperature to 130°C by reducing the internal current-setting reference voltage. In the thermal protection mode, the charge current reduces automatically, but remains continuous. www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 7 MP2603 – SINGLE CELL 150MA LINEAR LI-ION BATTERY CHARGER APPLICATION Flow Chart of Operation Power-On Reset (POR) feature can be applied to the MP2603 to ensure that the device starts operating in a known state when power is applied. The flow chart in Figure 4 describes the conditions and operation modes of the MP2603. CVC and CCC stand for “constant voltage charge” and “constant current charge”, respectively. Figure 4—Flow Chart of Operation MP2603 Rev. 1.01 1/31/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 8 MP2603 – SINGLE CELL 150MA LINEAR LI-ION BATTERY CHARGER PACKAGE INFORMATION TSOT23-5 NOTICE: The information in this document is subject to change without notice. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP2603 Rev. 1.01 1/31/2013 www.MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. 9