AS3610 DEMOBOARD

austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems datasheet is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: ams_sales@ams.com Please visit our website at www.ams.com D ata sh eet A S 3 6 1 0 /11 S w i tc h i n g C h ar g e r fo r L i -I o n / L i P o / L i F eP O 4 p o w e r ed d ev i ce s The 100/500mA USB current limit can be set via a dedicated control pin. Other limits like 900mA can be programmed in the OTP ROM. In addition, the Charger can generate a 5.05V output supply at VBUS for USB OTG. DCDC USB Charger
1.25A, 3MHz DCDC Charger
OTG Boost with low IQ (700µA) up to 500mA
22V over voltage protection
Seamless 100% Mode
Reverse Polarity protection on VBUS
NTC support
Low side LED driver am lc s on A te G nt st il AS3610 features an I2C interface which can be used by a microcontroller to fully control all functionality of the chip. Charging current and EOC current can be set with external resistors and adjusted via register settings if needed.
al id The AS3610/11 is a highly integrated standalone or optional I²C controlled step down charger. All supervision and regulation functions are realized internal and independent from the processor. 2 Key Features lv 1 General Description AS3611 is a stand-alone version of this charger IC. Charging and EOC current is set by resistor only. Functions like OTG boost mode or max current limit for wall adapter mode can be enabled using dedicated pins.
No external shunt resistor required
“No Battery” operation without voltage drop
Package: MLPD14 3x3mm 3 Application The device is ideal as 1 Cell LiIon, LiPo or LiFePO4 charger for mobile phones and portable devices. Te ch ni ca Figure 1. AS3610/11 Block Diagram www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 1 - 25 AS3610/11 Datasheet - C o n t e n t s Contents 1 General Description 2 Key Features ............................................................................................................................................................................ 1 ................................................................................................................................................................................ 1 ....................................................................................................................................................................... 3 4.1 Pin Descriptions ................................................................................................................................................................................... 3 5 Absolute Maximum Ratings 6 Electrical Characteristics ...................................................................................................................................................... 4 .......................................................................................................................................................... 5 7 Typical Operating Characteristics 8 Detailed Description al id 4 Pin Assignments ............................................................................................................................................. 7 ................................................................................................................................................................. 9 8.1 Charge Controller ................................................................................................................................................................................. 9 8.2 Step up converter mode (OTG Boost) 8.3 2-Wire-Serial Control Interface ........................................................................................................................................................................... 15 .............................................................................................................................................................................. 19 ........................................................................................................................................................... 21 10 Package Drawings and Markings ......................................................................................................................................... 22 ............................................................................................................................................................. 24 Te ch ni ca 11 Ordering Information ..................................................................................................................................................... 14 am lc s on A te G nt st il 8.5 Register Description 8.6 Register Overview ............................................................................................................................................... 12 ........................................................................................................................................................... 12 8.4 AS3611 pre-programmed variants 9 Application Information lv 3 Application .................................................................................................................................................................. 1 www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 2 - 25 AS3610/11 Datasheet - P i n A s s i g n m e n t s 4 Pin Assignments 4.1 am lc s on A te G nt st il lv al id Figure 2. AS3610/11 Pin Assignments (Top View) Pin Descriptions Table 1. Pin Descriptions Pin Number Pin Name 1 XEN AS3610 Pin Name XEN 2 USB500 3 NTC 4 VBAT 5 VDD_INT 6 SW 7 VBUS 8 PGND 9 STAT 10 I_TERM 11 I_SET I_SET VSS VSS NTC Supply Description VBAT XEnable pin for step down charger VBAT Set current limit in charger mode. 100mA / 500mA USB current limit. VDD_INT VBAT NTC input Analog Sense input Analog pin VDD_INT Connect 1µF (0402) for internal LDO supply 2.5V SW SW node of step down charger. Connect to 1µH inductor (chip coil) Power pin VBUS Charger input (USB voltage or charger voltage) Power GND connection of step down charger ca PGND STAT Digital Open Drain Output pin ni I_TERM SCL Te 13 I USB500 ch 12 Pin Type AS3611 Analog pin 14 VBAT Sets trickle / EOC current VBAT Sets charging current (Constant current) Analog VSS Digital Open Drain Output pin; Requires an external pull-up resistor VBAT I²C clock line I VBAT switches mode to OTG boost Digital Open Drain Output pin; Requires an external pull-up resistor VBAT I²C data line I VBAT selects the highest input current limit for wall adapter charging OTG_BOOST SDA Pulled to GND for error / status indication via LED CHG_DET www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 3 - 25 AS3610/11 Datasheet - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 2 may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in Operating Conditions on page 5 is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Table 2. Absolute Maximum Ratings Min Max Unit Comments V_HV20 High voltage pins -2 22 V Applicable to high voltage pins: VBUS, SW, STAT V_MV 5V pins -0.3 7.0 V Applicable to 5V-pins: VBAT, XEN, SDA, SCL, USB500, I_SET, I_TERM V_LV 3.3V pins -0.3 5.0 V Applicable to 3.3V-Pins: VDD_INT, NTC IIN Input pin current -100 +100 mA Norm: JEDEC JESD78 Electrical Parameters Electrostatic Discharge 1 am lc s on A te G nt st il VESD al id Parameter lv Symbol Electrostatic discharge +/-1500 V Norm: JEDEC JESD22-A114F Temperature Ranges and Storage Conditions SCSB Operating Temperature TJ Junction Temperature -40 +85 ºC +110 ºC Storage Temperature Range -55 +150 ºC Humidity non-condensing 5 85 % Temperature (soldering) 2 TBODY Package Body Temperature Moisture Sensitive Level 260 ºC 3 Norm IPC/JEDEC J-STD-020 The lead finish for Pb-free leaded packages is matte tin (100% Sn) Represents a max. floor life time of 168h Te ch ni ca 1. pin STAT is +/-750V only 2. The reflow peak soldering temperature (body temperature) is specified according IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices” www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 4 - 25 AS3610/11 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics VBAT=+2.7V...+5.5V, TA =-40ºC...+85ºC. Typical values are at VBAT=+3.6V, TA=+25ºC, unless otherwise specified. The parameters with min and max values are guaranteed with production tests or SQC (Statistical Quality Control) methods. Table 3. Operating Conditions Parameter Notes Min Typ VHV20 High voltage pins Applicable to high voltage pins: VBUS, SW. -2 5.0 VMV 5V pins Applicable to 5V pins: VBAT, XEN, SDA, SCL, USB500, I_SET, I_TERM -0.3 VLV 3.3V pins Applicable to 3.3V-Pins: VDD_INT, NTC -0.3 TAMB Ambient Temperature -40 Operating Currents IUSB limit > 100mA Unit 20 V 5.5 V 3.6 V lv Operating Range Max al id Symbol 25 85 deg 10 mA IUSB limit < 100mA 5 mA VBAT current, if boost active without load VBAT=4.2V 700 µA IVBUS_OFF VBUS current in OFF mode VBUS=5V, TJ < 85ºC 16 µA IVBAT VBAT quiescent current in OFF mode VBAT=4.2V, TJ < 85ºC Including leakage current to VBUS 16 µA VBUS current, if step down charger is active IBOOST Charging Mode Parameter am lc s on A te G nt st il IVBUS_ACT VBUS undervoltage lockout Step Down charger disabled below this threshold. -150mV hysteresis 3.7 3.8 3.9 V VBUS_OV VBUS overvoltage off mode Step Down charger disabled above this threshold. -140mV hysteresis 6.3 6.5 6.7 V VBUS_min VBUS minimum voltage to regulate current to VBAT Programmable (2-bit) Vnom 0.12 3.9 4.2 4.5 4.7 Vnom+ 0.12 V ICHARGE Charge current accuracy of mean output current Current selected by resistor on ISET pin: ICHARGE = 21450/RSET and register const_curr -8% 550… 1250 +8% mA ITERM Termination and trickle (precharge) current 50… 200 +40mA or +30% mA ni USB input current limit resistor ch IUSB ca VBUS_UVLO Apply ISOFT current below this VBAT voltage ISOFT Soft current, if VBAT is below VSOFT Te VSOFT Current selected by resistor on ITERM pin: -40mA or ITERM = 1200/RTERM -30% 100mA USB current limit 88 93 105 mA 500mA USB current limit 450 475 500 mA 900mA USB current limit 800 850 900 mA Hysteresis -100mV 1.9 2.0 2.1 V 25 38 55 mA -0.1 2.9 +0.1 V +1 % +100 mV VTRICKLE Apply trickle current (=ITERM ) below this VBAT voltage VCHARGE End of charge voltage 20mV steps Programmable End of charge accuracy 4.2V EOC voltage, -40..85°C -1 Charge detect voltage difference VBUS-VBAT +1 VCHDET www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 3.5...4. 44 +40 5 - 25 AS3610/11 Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s Table 3. Operating Conditions Symbol Parameter Notes VRESUME Resume voltage VTHRESHOLD = VCHARGE - VRESUME RPMOS Min Typ Max Unit 120 mV Resistance of PMOS switch 300 mΩ RNMOS Resistance of NMOS switch 300 mΩ fOSC Switching frequency DMAX Maximum duty cycle Smooth transition. No skipmode. TMIN Minimum ON time of PMOS Minimum ON time of PMOS. Below this value, transition to pulseskip mode ICOIL Coil current limit 60 VBOOST VBUS regulated voltage in boost mode IBOOST Boost current 2.7VBAT>2.0V (Current set by resistor I_term) 0 Off time of step down charger enabled. If 100% pmos on mode is needed, off pulses are skipped 1 Off time of step down charger disabled. Smooth transition to 100% pmos on if needed (VBUS-VBAT is small) 0 Nobat detection disabled. 1 Nobat detection enabled. If No Battery is detected a small current through NTC (approx. 0.5µA), checks if a battery is connected again. A NTC is necessary for that setting. Te 7 000b www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 15 - 25 AS3610/11 Datasheet - D e t a i l e d D e s c r i p t i o n Charger Voltage Control Register (Address 1). Charger Voltage Control Addr: 1 Bit This register controls the charger voltages. Bit Name Default Access Bit Description End of charge voltage on VBAT Veoc 5:0 R/W 0 ... 35 ... 47 3.5V ... 4.2V ... 4.44V al id 100011b/ ROM Vchg_min 00b/ROM 0 1 2 3 R/W VBAT < 3.9V VBAT < 4.2V VBAT < 4.5V VBAT < 4.7V am lc s on A te G nt st il 7:6 lv Minimum charger (VBUS) voltage. Current is regulated down, if VBUS voltage drops below this level: Charger Current Control Register (Address 2). Charger Current Control Addr: 2 Bit This register controls the charger currents. Bit Name eoccurr 0 Default 0b/ ROM Access R/W Bit Description Current ratio selection between trickle and EOC current (defined by resistor RTERM) 0 1 EOC current = ITERM, Trickle current = ITERM EOC current = ITERM / 2, Trickle current = ITERM ConstantCurrent setting 2:1 constcurr 00b/ROM 0 1 2 3 R/W Constant Current = ICHARGE Constant Current = 0.81*ICHARGE Constant Current = 0.60*ICHARGE Constant Current = 0.40*ICHARGE Current selection for boost mode boost_lowcurr 0b/ROM R/W 4 NA NA NA ni en_pon ch 5 ca 3 deb_timer Te 7:6 0b/ROM 0 1 500mA maximum current 200mA maximum current NA Enables 100% on mode of PMOS R/W 0 100% mode disabled (smooth 100% mode, if disable_toff=1) 100% mode enabled. 1 Select debounce timer 00b/ROM www.austriamicrosystems.com/Battery-Chargers/AS3610 R/W 0 1 2 3 30msec debounce timer for comparator output 3msec debounce timer NA NA 1.01 16 - 25 AS3610/11 Datasheet - D e t a i l e d D e s c r i p t i o n NTC Supervision Register (Address 03). NTC Supervision Addr: 03 These bits define the battery temperature supervision. Bit Bit Name Default Access 0 ntc_on 1b/ROM R/W 1 ntc_10k 1b/ROM R/W 2 ntc_temp Bit Description ON/OFF control of battery NTC supervision Disabled Enabled al id 0 1 Select NTC resistor type 0 1 100kΩ 10kΩ 1b/ROM R/W lv Select NTC temperature shutdown 0 1 high temperature range (50 or 55 ºC) low temperature range (45 or 50 ºC) Charger Supervision Addr: 04 Bit am lc s on A te G nt st il Charger Supervision Register (Address 04). These bits define charging timer settings. Bit Name Default Access Bit Description Charging timeout timer ch_timeout 4 charging_tmax 1010b/ROM R/W ch ni ca 3:0 stat_mode Te 7:5 0b/ROM 010b/ROM www.austriamicrosystems.com/Battery-Chargers/AS3610 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Charging timer disabled 0.5 hour 1 hour 1.5 hour 2 hour 2.5 hour 3 hour 3.5 hour 4 hour 4.5 hour 5 hour 5.5 hour 6 hour 6.5 hour 7 hour 7.5 hour 0 Read: no timeout reached Write: reset charger timeout counter tCHARGING,MAX timeout reached and charging stopped R/W 1 Function of Status pin: R/W 0 1 2 3 4 5 1.01 always off ch_det=ON ch_det=ON, stop_charging or boost_error=5Hz blinking Charging=ON, stop_charging or boost_error=5Hz blinking Charging=ON, EOC=1Hz blinking, stop_charging or boost_error=5Hz blinking ch_det =ON, EOC=1Hz blinking, stop_charging or boost_error=5Hz blinking 17 - 25 AS3610/11 Datasheet - D e t a i l e d D e s c r i p t i o n Charger Status1 Register (Address 05). Charger Status1 Addr: 05 These bits show the status of the charger. Bit Name Default Access Bit Description 0 ChDet NA R Bit is set when charge adapter has been detected on pin VBUS 1 CCM NA R Bit is set when charger is in Constant current mode 2 Resume NA R Bit is set when battery voltage has dropped below resume level 3 Trickle NA R Bit is set when charger is in trickle charge mode 4 CVM NA R Bit is set when charger is in top-off charge mode (constant voltage mode) 5 EOC NA R Bit is set when charging has been terminated. Bit is cleared automatically when chg_en is cleared or charging is resumed. 6 Battemp_hi NA R Bit is set, if temperature is greater than 50 or 55°C. Bit is evaluated if charger is detected. 7 NoBat am lc s on A te G nt st il lv al id Bit NA R Bit is set when battery detection circuit indicates that no battery is connected to the system. This is done by measuring the NTC value. ntc_on has to be 1. Charger Status2 Register (Address 06). Charger Status2 Addr: 06 These bits show the status of the charger. Bit Name 0 LowBat 1 OVBat 2 LowBus 3 OVBus 4 UVLBus 5 Boost_act 6 Boost_err Access Bit Description NA R Set, if VBAT 1.17*VCHARGE NA R Set, if VBUS6.5V NA R Set, if VBUS140deg (ov_temp_140 set) ni Stop charging NA Te ch 7 Default ca Bit www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 18 - 25 AS3610/11 Datasheet - D e t a i l e d D e s c r i p t i o n 8.6 Register Overview Table 8. Register table Register dec hex Default b6 ChargerControl1 0 0h E1h Charger Voltage Control 1 1h 63h Vchg_min Charger Current Control 2 2h 10h deb_timer NTC supervision 3 3h 01h Charger supervision 4 4h 4Ah ChargerStatus1 5 5h NA ChargerStatus2 6 6h NA ASIC_ID1 62 3Eh 1 1 ASIC_ID2 63 3Fh 0 1 b5 b4 No_bat_d disable_to prechg_en ff et b3 b2 usb_current b0 Boost_en Chg_en Veoc boost_low curr en_pon constcurr ntc_temp charging_t max Battemp_ hi EOC eoccurr ntc_10k ntc_on ch_timeout lv stat_mode NoBat b1 al id b7 CVM Trickle Resume CCM ChDet UVLBus OVBus LowBus OVBat LowBat 0 0 1 0 1 1 0 1 am lc s on A te G nt st il bat_prech Boost_err Boost_act g Te ch ni ca revision www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 19 - 25 AS3610/11 Datasheet - D e t a i l e d D e s c r i p t i o n Te ch ni ca am lc s on A te G nt st il lv al id Figure 20. AS3610/11 State Diagram www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 20 - 25 AS3610/11 Datasheet - A p p l i c a t i o n I n f o r m a t i o n 9 Application Information Table 9. External Components Parameter Note Min Typ Max Unit CVBUS Input capacitor Ceramic X5R or X7R, 16 or 25V -20% 4.7 +120% µF CVBAT Output capacitor Ceramic X5R or X7R, 6.3V -20% 10 +120% µF CVDD_INT Output capacitor Ceramic X5R or X7R -20% 1 +100% µF Inductor (chip coil) LQM2HPN1R0MJ0 (Murata), Isat=1.5A, ESR=0.85mOhm MLP2520S1R0M (TDK), Isat=1.5A, ESR=0.85mOhm 1 RSET Resistor for CC current setting 550mA 650mA 750mA 850mA 950mA 1050mA 1150mA 1250mA 39,0 33,0 28,6 25,2 22,6 20,4 18,7 17,2 RTERM Resistor for trickle / EOC current setting 50mA 100mA 150mA 200mA 24 12 8 6 kΩ RNTC NTC Thermistor @25°C 10 / 100 kΩ µH lv am lc s on A te G nt st il L al id Symbol kΩ Te ch ni ca Figure 21. AS3611 USB detection www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 21 - 25 AS3610/11 Datasheet - P a c k a g e D r a w i n g s a n d M a r k i n g s 10 Package Drawings and Markings Te ch ni ca am lc s on A te G nt st il lv al id Figure 22. MLPD14 3x3mm Package Drawings and Dimensions www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 22 - 25 AS3610/11 Datasheet - R e v i s i o n H i s t o r y Revision History Date Owner Description 0.6 11.5.2011 pkm Initial draft 0.7 1.9.2011 pkm fixed typos, extended detailed description 0.9 16.9.2011 pkm fixed typos, changed ESD level for STAT pin, removed 0.5% EOC voltage limits 1.0 20.09.2011 cwo update values for pre-programmed variants, final release 1.01 28.12.2011 cwo Typos correction 1.1 15.3.2012 pkm added C-Version for FePO4 batteries Te ch ni ca am lc s on A te G nt st il lv Note: Typos may not be explicitly mentioned under revision history. al id Revision www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 23 - 25 AS3610/11 Datasheet - O r d e r i n g I n f o r m a t i o n 11 Ordering Information The devices are available as the standard products shown in Table 10. Table 10. Ordering Information Description Delivery Form Package AS3610-BDFP AS10 Switching Charger for Li-Ion/LiPo/LiFePO4 powered devices (I2C control) Tape & Reel in Dry Pack MLPD14 3x3mm AS3611-BDFP-A AS1A Switching Charger for Li-Ion/LiPo powered devices (stand alone) Tape & Reel in Dry Pack MLPD14 3x3mm AS3611-BDFP-B AS1B Switching Charger for Li-Ion/LiPo powered devices (stand alone) Tape & Reel in Dry Pack MLPD14 3x3mm AS3611-BDFP-C AS1C Switching Charger for LiFePO4 powered devices (stand alone) Tape & Reel in Dry Pack MLPD14 3x3mm am lc s on A te G nt st il Note: All products are RoHS compliant and austriamicrosystems green. Buy our products or get free samples online at ICdirect: http://www.austriamicrosystems.com/ICdirect al id Marking lv Ordering Code Technical Support is available at http://www.austriamicrosystems.com/Technical-Support Te ch ni ca For further information and requests, please contact us mailto: sales@austriamicrosystems.com or find your local distributor at http://www.austriamicrosystems.com/distributor www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 24 - 25 AS3610/11 Datasheet Copyrights Copyright © 1997-2011, austriamicrosystems AG, Tobelbaderstrasse 30, 8141 Unterpremstaetten, Austria-Europe. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. All products and companies mentioned are trademarks or registered trademarks of their respective companies. al id Disclaimer lv Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. ca am lc s on A te G nt st il The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information ni Headquarters ch austriamicrosystems AG Tobelbaderstrasse 30 A-8141 Unterpremstaetten, Austria Te Tel: +43 (0) 3136 500 0 Fax: +43 (0) 3136 525 01 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com/Battery-Chargers/AS3610 1.01 25 - 25