apm8601 Diodes, Inc., apm8601 Datasheet

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apm8601

Manufacturer Part Number
apm8601
Description
Dual Channel Single Cell Linear Lithium Battery Charger With 28v Ovp And Programmable Charge Timer
Manufacturer
Diodes, Inc.
Datasheet
The APM8601 is a dual input channel linear Li-Ion charger for
portable equipment that is optimized for small form-factor
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.
The APM8601 is packaged in U-DFN3030-14 package with a
thermal pad.
Applications
Description
Typical Application Circuit
APM8601
Document number: DS35138 Rev. 1 - 2
Handheld Consumer Devices
Cell Phones, PDAs, MP3 Players
Handheld Test Equipment
Digital Still Cameras
Multimedia players
DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY
CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE
Figure 2. Typical Application Circuit
www.diodes.com
1 of 14
Pin Assignments
Features
Note 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions
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 (Note 1)
applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
Figure 1. Pin Out
APM8601
© Diodes Incorporated
December 2010
TIMER

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apm8601 Summary of contents

Page 1

... Description The APM8601 is a dual input channel linear Li-Ion charger for portable equipment that is optimized for small form-factor 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 ...

Page 2

... If the prequal or fast-charge timers expire and the charging threshold voltage is not reached, (open-drain output) will go low. Remove the fault by cycling FLT power or raise . EN For optimal thermal performance connect to copper on PCB (electrically this can be GND www.diodes.com APM8601 TIMER = 475mA when USEL = high. EN December 2010 © Diodes Incorporated ...

Page 3

... Functional Block Diagram APM8601 Document number: DS35138 Rev DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE www.diodes.com APM8601 TIMER December 2010 © Diodes Incorporated ...

Page 4

... The device function is not guaranteed outside of the recommended operating conditions. APM8601 Document number: DS35138 Rev DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE Parameter FLT , CHG , Parameter (Note 4) Parameter www.diodes.com APM8601 TIMER Rating Unit V -0.3 to 28V V -0 200 V Rating Unit 40 ° ...

Page 5

... Electrical Characteristics APM8601 is tested 5V USB unless otherwise noted. Symbol Parameter V /V Input Voltage Range DC USB V /V Input Operating Range (Note 5) DC USB Input Undervoltage Lock Out UVLO (Note 5) OVLO Input Overvoltage Lock Out I Input Supply Current DC/USB I Shutdown Current ...

Page 6

... Electrical Characteristics (Continued) APM8601 is tested 5V USB unless otherwise noted. Symbol Parameter EN , USEL Logic Input Thresholds Logic Input Leakage Current POK CHG FLT , , Logic Output Voltage, Low Logic Output Leakage Current, High I CHG / Top-Off Threshold TOPOFF R Internal Pullup Resistance ...

Page 7

... Functional Description APM8601 is a linear Li-Ion battery charger device for single-cell applications. It has dual power inputs (DC and USB) and the charge currents can be programmed with the R features, such as charge timers, battery temperature monitoring and internal thermal limiting. Functional State Diagram EN = HIGH ...

Page 8

... ITOPOFF = RSETI × VSETI 1000 = ICHARGE RSETI Thermistor Beta 3000 3250 3500 28.3k 3750 www.diodes.com APM8601 TIMER does SETI SETI CHARGE 112.5 RSETI Resistance in kΩ at Typical in °C 0°C 25°C 50°C Hot trip Cold Trip 25.1 10 4.6 55.1 ‐3.2 27 ...

Page 9

... CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE BAT : CT ⎛ ⎞ CCT = × ⎜ ⎟ TCHARGE 334 min ⎝ ⎠ ⎛ CCT = = × ⎜ TPREQUAL TTOPOFF 34.8 min ⎝ www.diodes.com APM8601 TIMER is limited to 95mA (one USB power allocation ⎞ ⎟ ⎠ nF December 2010 © Diodes Incorporated ...

Page 10

... If the battery voltage falls below 4.05V then the device will automatically return to the Charge state. APM8601 Document number: DS35138 Rev DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE 4. CHARGE 1500/R SETI SETI I TOPOFF 112.5/R SETI www.diodes.com APM8601 TIMER t December 2010 © Diodes Incorporated ...

Page 11

... DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE APM8601 Package Packing 7 : Tape & Reel Packaging (Note 6) Quantity 3000/Tape & Reel ( Top View ) APM8601 Y : Year : 0 Week : A~Z : 1~26 week a~z : 27~52 week represents 52 and A~Z : Internal Code Package Identification Code U-DFN3030- www ...

Page 12

... DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE (All Dimensions in mm) TOP MARK Seating Plane C 2.95/3.05 A 2.2/2 0.15/0.25 0. www.diodes.com APM8601 TIMER Top View 0.40Typ 14x-0. (Pin #1 ID) 2.40 Land Pattern Recommendation (Unit:mm) December 2010 © Diodes Incorporated ...

Page 13

... 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 DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE www.diodes.com APM8601 TIMER December 2010 © Diodes Incorporated ...

Page 14

... Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com APM8601 Document number: DS35138 Rev DUAL CHANNEL SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP and PROGRAMMABLE CHARGE IMPORTANT NOTICE LIFE SUPPORT www.diodes.com APM8601 TIMER December 2010 © Diodes Incorporated ...

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