apm8600 Diodes, Inc., apm8600 Datasheet

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apm8600

Manufacturer Part Number
apm8600
Description
Single Cell Linear Lithium Battery Charger With 28v Ovp And Programmable Charge Timer
Manufacturer
Diodes, Inc.
Datasheet

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The APM8600 is a linear Li-Ion charger for portable
equipment
applications.
The charge algorithm in the APM8600 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 APM8600 is packaged in U-DFN3030-14 package with
a thermal pad.
Applications
Description
Typical Application Circuit
APM8600
Document number: DS35140 Rev. 1 - 2
Handheld Consumer Devices
Cell Phones, PDAs, MP3 Players
Handheld Test Equipment
Digital Still Cameras
Multimedia players
that
is
optimized
for
small
Figure 2. Typical Application Circuit
WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER
form-factor
SINGLE CELL LINEAR LITHIUM BATTERY CHARGER
www.diodes.com
1 of 14
Pin Assignments
Features
Note: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS
Linear Lithium Ion / Lithium Polymer charging IC
Supply input safe up to 28V
Fast charging with maximum current of 1A
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)
exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html
Figure 1 Pin Out
APM8600
.
© Diodes Incorporated
December 2010

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apm8600 Summary of contents

Page 1

... The charge algorithm in the APM8600 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). Floating pins www.diodes.com APM8600 EN to December 2010 © Diodes Incorporated ...

Page 3

... SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER CHARGER REGULATOR OVLO UVLO V DROP CHARGE PREQUAL CONTROL TIMER GND www.diodes.com APM8600 BAT THERMAL CURRENT FOLDBACK PROTECTION 1.5V REFERENCE THM FLT POR CHG December 2010 © Diodes Incorporated ...

Page 4

... APM8600 Document number: DS35140 Rev SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER Parameter FLT , CHG , POK , EN Parameter (Note 4) Parameter www.diodes.com APM8600 Rating Unit -0.3 to 28V 200 V Rating Unit 40 °C/W Rating Unit -40 to +85 ° ...

Page 5

... Electrical Characteristics APM8600 is tested 5V 4V BAT otherwise noted. Symbol Parameter V Input Voltage Range DC V Input Operating Range (Note 5) DC Input Undervoltage Lock Out UVLO (Note 5) OVLO Input Overvoltage Lock Out I Input Supply Current DC I Shutdown Current SHTDWN R Input to BAT On-Resistance ...

Page 6

... Electrical Characteristics (Continued) APM8600 is tested 5V 4V BAT otherwise noted. Symbol Parameter EN 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 THM_Pullup THM Resistance, Hot ...

Page 7

... Functional Description APM8600 is a linear Li-Ion battery charger device for single-cell applications. Charge currents can be programmed with the R resistor. The device also incorporates several safety features, such as charge timers, battery temperature monitoring SETI and internal thermal limiting. Functional State Diagram EN = HIGH ...

Page 8

... RSETI RSETI × VSETI 1000 = ICHARGE RSETI Thermistor Resistance in kΩ at Beta 0°C 3000 25.1 3250 27.1 3500 29.3 28.3k 3750 31 www.diodes.com APM8600 CHARGE Typical in °C 25°C 50°C Hot trip Cold Trip 10 4.6 55.1 ‐3.2 10 4.3 52.6 ‐1 50.5 0.5 10 3.8 48.6 2.0 December 2010 © Diodes Incorporated ...

Page 9

... SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER : CT ⎛ ⎞ CCT = × ⎜ ⎟ TCHARGE 334 min ⎝ ⎠ ⎛ ⎞ CCT = = × ⎜ ⎟ TTOPOFF 34.8 min ⎝ ⎠ www.diodes.com APM8600 December 2010 © Diodes Incorporated ...

Page 10

... SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER 4. CHARGE 1500/R SETI SETI I TOPOFF 112.5/R SETI value. Once that timer completes, the device will enter the Done state, with zero www.diodes.com APM8600 t December 2010 © Diodes Incorporated ...

Page 11

... SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER APM8600 Package Packing FB :U-DFN3030- Tape & Reel Packaging (Note 6) Quantity 3000/Tape & Reel APM8600 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

... SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER (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 APM8600 Top View 0.40Typ 14x-0. (Pin #1 ID) 2.40 Land Pattern Recommendation (Unit:mm) December 2010 © Diodes Incorporated ...

Page 13

... Note: 6. The taping orientation of the other package type can be found on our website at http://www.diodes.com/datasheets/ap02007.pdf APM8600 Document number: DS35140 Rev SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER www.diodes.com APM8600 December 2010 © Diodes Incorporated ...

Page 14

... Incorporated products in such safety-critical, life support devices or systems. Copyright © 2010, Diodes Incorporated www.diodes.com APM8600 Document number: DS35140 Rev SINGLE CELL LINEAR LITHIUM BATTERY CHARGER WITH 28V OVP AND PROGRAMMABLE CHARGE TIMER IMPORTANT NOTICE LIFE SUPPORT www.diodes.com APM8600 December 2010 © Diodes Incorporated ...

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