APM8601FB-7

NOT RECOMMENDED FOR NEW DESIGN APM8601 Green DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE TIMER Description Pin Assignments BAT The APM8601 is a dual input channel linear Li-Ion charger for portable equipment that is optimized for small formfactor applications. The charge algorithm in the APM8601 covers all the charge requirements for a single Li-Ion battery cell. Included is pre-charging for deeply discharged cells, constant current / constant voltage fast charging and a top-off feature to bring the cell safely to a full-charge level. The battery is constantly monitored for overvoltage, charge time and cell temperature to ensure safe charging. A fault is triggered once the charge time exceeds a value that is programmable using a single capacitor and the temperature measurement is achieved through a thermistor positioned close to the battery cell. The APM8601 automatically selects the USB or DC input, depending on which is valid (DC has priority if both are valid). The charging current from the USB input is set to 100mA or 500mA based on the logic level of the USEL input. 1 14 FLT 13 DC SETI 2 THM 3 GND 4 12 DC CT 5 10 POK USEL 6 9 USB BAT 7 8 EN APM8601 11 CHG Figure 1 Pin Out Applications • • • • • Handheld Consumer Devices Cell Phones, PDAs, MP3 Players Handheld Test Equipment Digital Still Cameras Multimedia Players The APM8601 is packaged in U-DFN3030-14 package with a thermal pad. Features • • • • • • • • • • • • Linear Lithium Ion / Lithium Polymer charging IC Supply Input Safe up to 28V Fast Charging with Maximum Current of 1A 100mA/500mA USB Charge Current Selected with USEL Resistor-Programmable Charging Current Resistor-Programmable End-Of-Charge Capacitor Programmable Charge Timer Three Charge Indicator Pins for a Status Display Thermal Protection DFN3030-14: Available in “Green” Molding Compound (No Br, Sb) Lead-Free Finish; RoHS Compliant (Notes 1 & 2) Halogen and Antimony Free. “Green” Device (Note 3) Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and Lead-free. 3. Halogen- and Antimony-free "Green” products are defined as those which contain 3.94kΩ AND RTHM < 28.3kΩ) CHG CHG 0A POK 0 IBAT 1 0A FLT 1 CHG 150 / RSETI 1 VBAT < 3V AND Time out (RTHM > 315Ω AND RTHM < 3.94kΩ) OR RTHM > 28.3kΩ FAULT VBAT < 2.82V Reset Timer VBAT > 3V Reset Timer RTHM < 315Ω OR (RTHM > 3.94kΩ AND RTHM < 28.3kΩ) CHARGE THM POK 0 FLT CHG 0 IBAT Timer Hold POK 0 IBAT (USB) IBAT (DC) 1 0A FLT 0 CHG 1 IBAT 0A IBAT > 112.5 / RSETI AND Time out IBAT < 112.5 / RSETI Reset Timer VBAT < 4.05V Reset Timer TOP-OFF 0 0 FLT 1 CHG 0 USEL Setting 1500 / RSETI (RTHM > 315Ω AND RTHM < 3.94kΩ) OR RTHM > 28.3kΩ IBAT > 172.5 / RSETI Reset Timer POK POK FLT 1 CHG 1 Time out DONE POK 0 IBAT APM8601 Document number: DS35138 Rev. 2 - 3 FLT 1 CHG 0A 8 of 15 www.diodes.com 1 May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Functional Description (Cont.) INPUTS DC Pins 12 and 13 are the DC input. This input will allow charging from input voltages between 4.15V and 7V, and can withstand up to 28V without device damage although charging is disabled above 7.5V (typ.). USB Pin 9 is the USB power input. This input will charge with input voltages from 4.15V to 7V. The charging current drawn from USB is selected using the USEL pin, either at 95mA (1 USB power allocation unit) or 475mA (5 USB power allocation units, High Power). Note that RSETI has no effect on USB charging currents in the Charge state, but RSETI does affect the Prequal current when charging from USB. This pin will also withstand up to 28V, but charging is disabled above 7.5V (typ.). If both DC and USB are connected and valid, power will be drawn from DC with charge current set by RSETI. USB and USEL will be ignored. GND System ground connection. EN Pin 8 is the enable pin of the device. When pulled low the device will operate normally. When high, the device will remain in the disabled state. For auto-starting, connect pin 8 directly to GND. SETI Pin 2 allows the charge currents to be programmed. RSETI  1500 ICHARGE The charge current setting also changes the currents in prequal and top-off modes (being 10% and 7.5% of ICHARGE respectively): IPREQUAL  150 RSETI ITOPOFF  112.5 RSETI This pin can also be used to monitor the battery charging current: ICHARGE VSETI 1000 RSETI THM 0 315Ω Enabled 3.94k APM8601 Document number: DS35138 Rev. 2 - 3 RTHM Disabled Enabled Disabled The thermistor connection is on pin 3. This allows the battery temperature to be monitored using a 10k NTC thermistor, which should be placed as close as possible to the battery cell. If no thermistor is used then this input should be connected directly to ground. The charger will operate when there is less than 315Ω on this input (i.e., no thermistor connected); will be disabled when there is between 315Ω and 3.94kΩ; enabled when between 3.94kΩ and 28.3kΩ; and disabled above 28.3kΩ. 28.3k Thermistor Beta 3000 3250 3500 3750 9 of 15 www.diodes.com Resistance in kΩ at 0°C 25°C 50°C 25.1 10 4.6 27.1 10 4.3 29.3 10 4 31.7 10 3.8 Typical in °C Hot trip Cold Trip 55.1 -3.2 52.6 -1.3 50.5 0.5 48.6 2.0 May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Functional Description (Cont.) USEL Pin 6 allows the selection of the USB charging current. When low, I BAT is limited to 95mA (one USB power allocation unit) and when High IBAT is limited to 475mA (5 USB power allocation units, High Power), when drawing power from the USB input. This pin does not affect the device operation when power is being drawn from DC. CT The Charge Timer input on pin 5 allows selection of how long the system timers for Prequal, Charge and Top-off states last. They are set by selecting the value of capacitor, CCT:  CCT  TCHARGE  334 min    68nF   CCT  TPREQUAL  TTOPOFF  34.8min    68nF  The charge timer will hold its current value if the charging was stopped via the thermistor and continue when the battery is in a valid temperature range for charging. OUTPUTS BAT Pins 1 and 7 are the current-controlled charging outputs for the battery cell. They should be connected together and to the positive terminal of the battery. The chip monitors the voltage on these pins. There should be a 2.2µF capacitor connected from BAT to GND. POK The POK flag on pin 10 is pulled low when a valid power input is available on either DC or USB inputs. It will go high when no valid power is available and the device will enter the Disable state. CHG The CHG flag at pin 11 is pulled low when the device is in the Charge state. It will be high in Prequal and Top-off states. If the thermistor trips the circuit into the THM state (from Prequal or Charge states), CHG will hold its previous value. FLT The FLT flag on pin 14 indicates a battery fault, as determined by a time-out in either the Prequal or Charge states. If the battery voltage does not reach 3V after the prequal timer (default 34.8mins), or does not reduce charging current to 7.5% after the charge timer (default 334mins), this indicates that the battery has failed or is failing and this will trigger the FLT flag. This flag will not automatically reset, and can only be cleared by cycling the power input or the EN pin. APM8601 Document number: DS35138 Rev. 2 - 3 10 of 15 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Functional Description (Cont.) EN CHG 4.2V 3V VBAT 0V DONE TOP-OFF CHARGE DISABLE IBAT PREQUAL ICHARGE 1500/RSETI IPREQUAL 150/RSETI 0A ITOPOFF 112.5/RSETI t CHARGING PROCESS DESCRIPTION The charging process is as follows, working through the state diagram. The device will begin in the Disable state as the input power supply ramps from 0V. Once the input power supply has got into the valid range (4.15V – 7V), and the device is enabled then it will enter the Prequal state. This state allows for slow charging of a severely discharged battery. If the battery is already partially charged then the condition to move into the Charge state is met. If it is not then the slow charge will increase the battery voltage until it can enter the Charge state, or if the voltage does not rise sufficiently before the charge timer runs out (set using the capacitor on the CT pin) then the device will go into the Fault state, indicating that the battery cell may be damaged or has failed and is not taking charge. In the Prequal state the battery temperature can be monitored with a 10k NTC thermistor connected to the THM pin, and if the battery temperature goes out of range (above ~50°C or below ~0°C, depending on thermistor choice) then charging will be suspended with the device going into the THM state. Once the battery has charged to a level of 3V, the device enters the Charge state, allowing faster charging of the battery in its normal voltage range, with 10 times the current used in the Prequal state. For information on setting the charge currents, see the functional description of the SETI pin. Again, the battery temperature is monitored and charging will be suspended if the temperature goes out of range. The Charge state will last until the current drawn by the battery drops to 7.5% of the full charge current. The device will then enter the Top-Off state, maintaining battery voltage and providing top-off charging current for the time defined by the CT value. Once that timer completes, the device will enter the Done state, with zero battery current. If the battery voltage falls below 4.05V then the device will automatically return to the Charge state. APM8601 Document number: DS35138 Rev. 2 - 3 11 of 15 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Ordering Information APM8601 FB - 7 Device APM8601FB-7 Note: Package Packing FB :U-DFN3030-14 7 : Tape & Reel Package Code Packaging (Note 8) FB U-DFN3030-14 7” Tape and Reel Quantity Part Number Suffix 3000/Tape & Reel -7 8. Pad layout as shown on Diodes Inc. suggested pad layout document, which can be found on our website at http://www.diodes.com/package-outlines.html . . Marking Information ( Top View ) XX Y WX XX : P4 : APM8601 Y : Year : 0~9 W : Week : A~Z : 1~26 week; a~z : 27~52 week; z : represents 52 and 53 X : A~Z : Internal Code Part Number Package Identification Code APM8601FB-7 U-DFN3030-14 P4 APM8601 Document number: DS35138 Rev. 2 - 3 12 of 15 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Package Outline Dimensions (All Dimensions in mm) U-DFN3030-14 0.15 TOP MARK 0.10 C 0.08 C C 2.95/3.05 2.2/2.4 B 14x-0.50 0.25 A 0/0.05 Side View 2X- 0.57/0.63 Seating Plane A Top View 0.40Typ 14x-0.25 CL 2X- C0 0.25 B 0.40Typ. CL CL 0.15/0.25 (Pin #1 ID) 0.10 Bottom View APM8601 Document number: DS35138 Rev. 2 - 3 CL 2.65 1.80 .3 0.30/0.40 1.6/1.8 2.95/3.05 (Pin #1 ID) C A B 2.40 Land Pattern Recommendation (Unit:mm) 13 of 15 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 Taping Orientation (Note 9) Note: 9. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf APM8601 Document number: DS35138 Rev. 2 - 3 14 of 15 www.diodes.com May 2016 © Diodes Incorporated NOT RECOMMENDED FOR NEW DESIGN APM8601 IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION). Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to this document and any product described herein. Diodes Incorporated does not assume any liability arising out of the application or use of this document or any product described herein; neither does Diodes Incorporated convey any license under its patent or trademark rights, nor the rights of others. Any Customer or user of this document or products described herein in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on Diodes Incorporated website, harmless against all damages. Diodes Incorporated does not warrant or accept any liability whatsoever in respect of any products purchased through unauthorized sales channel. Should Customers purchase or use Diodes Incorporated products for any unintended or unauthorized application, Customers shall indemnify and hold Diodes Incorporated and its representatives harmless against all claims, damages, expenses, and attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized application. Products described herein may be covered by one or more United States, international or foreign patents pending. Product names and markings noted herein may also be covered by one or more United States, international or foreign trademarks. This document is written in English but may be translated into multiple languages for reference. Only the English version of this document is the final and determinative format released by Diodes Incorporated. LIFE SUPPORT Diodes Incorporated products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Diodes Incorporated. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body, or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Customers represent that they have all necessary expertise in the safety and regulatory ramifications of their life support devices or systems, and acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products and any use of Diodes Incorporated products in such safety-critical, life support devices or systems, notwithstanding any devices- or systems-related information or support that may be provided by Diodes Incorporated. Further, Customers must fully indemnify Diodes Incorporated and its representatives against any damages arising out of the use of Diodes Incorporated products in such safety-critical, life support devices or systems. Copyright © 2016, Diodes Incorporated www.diodes.com APM8601 Document number: DS35138 Rev. 2 - 3 15 of 15 www.diodes.com May 2016 © Diodes Incorporated