NOT RECOMMENDED FOR NEW DESIGN Green APM8601 DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE TIMER Description Pin Assignments BAT 1 14 FLT The APM8601 is a dual input channel linear Li-Ion charger DC SETI 2 13 for portable equipment that is optimized for small form- factor applications. THM 3 12 DC 4 APM8601 11 GND CHG The charge algorithm in the APM8601 covers all the charge requirements for a single Li-Ion battery cell. Included is 5 10 CT POK pre-charging for deeply discharged cells, constant current / 6 9 USEL USB constant voltage fast charging and a top-off feature to bring 7 8 BAT EN the cell safely to a full-charge level. Figure 1 Pin Out The battery is constantly monitored for overvoltage, charge time and cell temperature to ensure safe charging. A fault is Applications 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 Handheld Consumer Devices close to the battery cell. Cell Phones, PDAs, MP3 Players The APM8601 automatically selects the USB or DC input, Handheld Test Equipment depending on which is valid (DC has priority if both are Digital Still Cameras valid). The charging current from the USB input is set to Multimedia Players 100mA or 500mA based on the logic level of the USEL input. 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 NOT RECOMMENDED FOR NEW DESIGN APM8601 Typical Application Circuit DC Input To Battery DC BAT GND Attach to cell USB Input THM USB 500mA POK APM8601 USEL 100mA Charge status BAT OFF EN CHG ON CT Status LED SETI +5V Figure 2. Typical Application Circuit Pin Descriptions 1 14 BAT FLT DC 2 13 SETI 3 12 THM DC 4 APM8601 11 GND CHG 5 10 CT POK USEL 6 9 USB BAT 7 8 EN 2 of 15 APM8601 May 2016 Diodes Incorporated www.diodes.com Document number: DS35138 Rev. 2 - 3