UP8001A

UP8001A UPI | Alldatasheet

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Features

Pin Configuration & Typical Application Circuit BAT 2V8 TEMP IREF IMIN VIN STAT# FAULT# EN TOEN TIME uP8001 Battery Pack RT RU GND The uP8001 is a highly integrated single-cell Li-ion or Li- Polymer battery charger specifically designed to work with AC adaptor or USB port. The uP8001 charges battery with a minimum current when the battery voltage is lower than 2.8V. The charger works at constant current mode when the battery voltage is between 2.8V and 4.2V, the charge current is programmable up to 2A by an external resistor. The charge works at constant voltage mode when the battery voltage is 4.2V. When the input voltage is removed, the uP8001 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 1uA. Other features include thermal foldback charge current, NTC thermistor interface and automatic recharge. The uP8001 is available in thermal-enhanced and space-saving VQFN and VDFN packages.

10 BAT

FAULT# STAT# TIME GND AGND BAT TEMP IREF IMIN VIN FAULT# STAT# TIME AGND GND TOEN EN 2V8 VIN VIN BAT BAT VDFN3X3 10-L VQFN4X4 – 16L

2uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 i. o N n i P n i P e m a N n o i t c n u F n i P N FQN F D , 5 1 , 1 6 1 1 N I V . t u p n I y l p p u S n i p s i h t m o r f c i m a r e c F u 2 . 2m u m i n i mA . r o t p a d a l l a w a o t n i p s i h t t c e n n o C . r e g r a h c e h t f o n o i t a r e p o e l b a t s r o f d e r i u q e r s i D N Go t 22 # T L U A F . n o i t a c i d n I t l u a F d e l l u p s i n i p s i h T . s u t a t s t l u a f g n i t a c i d n i t u p t u o n i a r d - n ep o n a s i n i p s i h T . s n o i t o d n o c t l u a f y n a r e d n uWO L o t 33 # T A T S . n o i t a c i d n I s u t a t S r e g r a h C . s u t a t s g n i g r a h c g n i t a c i d n i t u p t u o n i a r d - n e p o n a s i n i p s i hT . y r e t t a b a g n i g r a h c s i r e g r a h c e h t n e h wWO L o t d e l l u p s i n i p s i h T 44 E M I T . d o i r e P n o i t a l l i c s O e n i m r e t e d o t s n i p D N G d n a E M I T n e e w t e b r o t i c a p a c g n i m i t a t c en n o C . r e g r a h c e h t r o f e c n e r e f e r e m i t a s e d i v o r p d o i r e p n o i t a l l i cs o s i h T . d o i r e p n o i t a l l i c s o e h t 55 D N G . d n u o r G o t e v i t c e p s e r h t i wd e r u s a e ms i e g a t l o v l l A . d n u o r gm e t s y s o t n i p s i h t t c e n n o C . n i p s i h t 6A N N E O T . t u p n I e l b a n E t u Oe m i T r o f t i m i l e m i t - e g r a h c t u o e m i t e h t s e l b a s i d D N Go t n i p s i h t g n i l l u P . t i m i l t u o e m i t e h t e l b a n e o t h g i h n i p s i h t l l u p r o t a o l f n i p s ih t t e L . s e d o me g r a h c t s a f 76 N E . t u p n I e l b n a E s i h t l l u p r o t a o l f n i p s i h t t e L . r e g r a h c e h t s e l b a s i dD N Go t n i p s i h t g n i l l u P . r e g r a h c e h t e l b a n e o t h g i h n i p 87 8 V 2 . t u p t u Oe c n e r e f e RV 8 . 2 e g a t l o v t u p n i e h t n e h we c r u o s e g a t l o v V 8 . 2 a s t u p t u o n i p s i h T . t n e r r u c t u p t u o A m 2 g n i c r u o s f o e l b a p a c s i n i p s i h T . l e v e l d lo h s e r h t R O P e v o b a s i 98 F E R I . g n i mm a r g o r P t n e r r u C g n i g r a h C t n a t s n o CD N G d n a F E R I n e e w t e b r o t s i s e r a t c e n n o C I t n e r r u c e c n e r e f e r m a r g o r p o t s n i pF E R . e d o mg n i g r a h c t n e r r u c t n a t s n o c r o f 01A N N I M I . g n i mm a r g o r P t n e r r u Cg n i g r a h Cm u m i n i M D N Gd n a N I M I n e e w t e b r o t s i s e r a t c e n n o C s i t n e r r u cm u m i n i M. n o i s i c e d e g r a h c - f o - d n e r o f l e v e l t n e r r u cm u m i n i mm a r g o r p o t s n i p I f o 0 1 / 1 o t t e s y l l a n r e t n iF E R . n i p 8 V 2 o t d e t c e n n o c r o g n i t a o l f s i n i p s i h t n e h w 119 P M E T . t u p n I n o i t c e t e D l a v o m e R y r e t t a Bd n a e r u t a r e p m e T l a m r e h t C T N o t n i p s i h t t c e n n o C . k c a p y r e t t a b f o t u p t u o , 3 1 , 2 1 , 4 1 0 1 T A B . t u p t u O y r e t t a B F u 2 . 2 m u m i n i mA . k c a p y r e t t a b f o l a n i m r e t e v i t i s o p e h t o t n i p s i h t t c e n n o C . r e g r a h c e h t f o n o i t a r e p o e l b a t s r o f d e r i u q e r s i r o t i c a p a c Functional Pin Description

3uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Functional Block Diagram Reference Temperature Monitoring Oscillator Counter BAT VCH VMIN VRECHG 2V8 STAT# FAULT# GND EN TIME TOEN TEMP IMIN IREF VIN QMIAN QSEN 100000: 1 Current Mirror VPOR VBAT VIN 100mV VPOR VCH VMIN VRECHG rechage minbat FAULT STATUS IT IREF 2V8 ISEN IMIN MIN_I 40K 60K 67K 33K Over Temp Under Temp Batt Removal Input OK CHARGE uP8001ADAA-XX, uP8001AQAD

4uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Functional Block Diagram Reference Temperature Monitoring Oscillator Counter BAT VCH VMIN VRECHG 2V8 STAT# FAULT# GND EN TIME TOEN TEMP IMIN IREF VIN QMIAN QSEN 100000: 1 Current Mirror VPOR VBAT VIN 100mV VPOR VCH VMIN VRECHG rechage minbat FAULT STATUS IT IREF 2V8 ISEN IMIN MIN_I 40K 60K 75K 25K Over Temp Under Temp Batt Removal Input OK CHARGE uP8001BDAA-XX

quiescent current from the battery. power and less than 1uA form the battery. circuit. The maximum allowed external load for 2V8 is 2mA. mode (CVM) as shown in Figure 1. Figure 1. Typical Charge Cycles of uP8001.

6uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 of-charge and set STAT# pin high impedance if the charge current is lower than I MIN. The charger actually does not terminate charging until the end of the TIMEOUT , as described in the Total Charge Time section. The voltage at IMIN pin VIMIN is regulated to 0.8V reference voltage when it is left open. The EOC current I MIN is 10,000 times of the current through R IMIN and is governed by the following equation: IMINIMIN IMIN MIN 10R V 8 . 0000, 10R VI ×=×= (A) Another way to set IMIN is connecting IMIN pin to 2V8 pin. This sets IMIN to 1/10 of IREF. For the uP8001 in VDFN3x3 package, the IMIN pin is connected internally to 2V8 pin. However, if IREF is shorted to ground, IMIN is automatically set to 5mA and cannot be changed externally. Total Charge Time An external timing capacitor CTIME connecting between TIME pin and ground programs a timing reference. The uP8001 charges/discharges the CTIME between 1.5V and 0.5V, both with 10uA current source. The oscillation period is described by the following equation: TIME OSC C102T ××= (second) A 22-stage binary counter counts the timing oscillation and limits the total charge time TCHG for the CCM and CVM. The TCHG can be calculated as: TIME OSC OUT C1039 . 8T2T ××=×= (second) A 15nF CTIME results in a 3.0ms oscillation period and 3.5 hours charge time. The charger MUST reach the end-of- charge status within TOUT. Otherwise, a TIMEOUT fault is triggered and latches up the charge. Once latched by TIMEOUT fault, the charge can only be reset by VIN POR or toggling the EN pin. The TKM also has a time limit of 1/8 TOUT. A TIMEOUT fault is triggered and latches up the charger if the battery voltage does not reach VMIN within this limit. Therefore, the charge stays in trickle mode for at least 15xTOSC and, at most 1/8 of TOUT as shown if Figure 1. Disabling TIMEOUT Limit Pulling the TOEN pin low disables the timeout limit. The charge behaviors like a current-limited LDO regulator with its output voltage set to V CH. The STAT# pin is set high impedance if charge current drops below IMIN, and pulled low if charge current is higher than IMIN. There is no recharge cycle at this mode. The time limit for trickle mode is not disabled even the TOEN VMIN. Constant Current Mode The uP8001 operates at CCM when the battery voltage is between 2.8V and V CH (Charge High Voltage, 4.1V for uP8001-41, 4.2V for uP8001-42). The charger acts like a constant current regulator. The charge current I REF is programmed up to 2A (1.5A for DFN3x3 package) by the IREF pin, see the Charge Current Programming section for detail. Constant Voltage Mode The uP8001 operates at CVM when the battery voltage reaches the charge high voltage VCH. The charger acts like a constant voltage regulator that regulates the battery terminal voltage at VCH. The charge current is determined by the battery impedance and core voltage. The uP8001 asserts end-of-charge and sets STAT# high impedance at T4 and T8 when the charge current is less than IMIN (See End-Of-Charge Current section for detail). The charging cycle is actually not terminated until charge timeout is completed to bring the battery to its full capacity. Recharge After a charge cycle completes, charging is prohibited until the battery voltage drops to a recharge threshold, VRECHG. Then a new charge cycle starts at point T6 and ends at point T9, as shown in Figure 1. The timeout counter is reset at T6. Charge Current Setting An external resistor RIREF connecting between IREF and ground programs the charge current. The voltage at IREF pin VIREF is regulated to 0.8V reference voltage when it is left open. The charging current IREF at CCM is 100,000 times of the current through RIREF as the following equation: IREFIREF IREF REF 10R V 8 . 0000,100R VI ×=×= (A) The charge current is set to 100mA when IREF pin is pulled lower than 0.4V. The IREF pin is capable of sourcing 100uA. The external circuit must be able to sink at least 100uA to pull low this pin under 0.4V. The charge current is set to 500mA when IREF pin is pulled higher than 1.3V. No special concern is required for sourcing capability of the external circuit to pull high this pin above 1.3V. End-of-Charge (EOC) Current A resistor RIMIN connecting between IMIN pin and ground set the end-of-charge current IMIN. The uP8001 asserts end- Functional Description

current settles between +120OC and +130OC. current mode, the uP8001 will not assert end-of-charge. pin for monitoring the battery pack as shown in Figure 3. by other ASIC on the PCB for redundant thermal protection. =1/6 of the 2.8V bias voltage. 5:1 at least at the low and the high temperature limits. Let the TOEN pin floating to enable the timeout function.

1. The uP8001 automatically reduces the charge current

prevent further temperature rise. Figure 2. Charge Current Thermal Flodback. +120OC. This makes ISEN decreases at a rate of -1uA/OC.

9uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Functional Description Battery Removal Detection The uP8001 assumes that the NTC thermistor is co-packed with the battery and is removed together with the battery. The TEMP pin is pulled high to 2V8 if the NTC is removed. The uP8001 asserts the removal of battery, stops the charging cycle and sets FAULT# pin low if TEMP voltage is higher than 2.1V. A new charge cycle starts if a battery is inserted again. For applications that do not support battery thermal detection, set TEMP voltage as 1/3 of 2V8 bias voltage by an external resistive voltage divider. Indications The uP8001 has three indications: the input presence, the charge status, and the fault indication. The input presence is indicated by the 2V8 pin while the other two indications are presented by the STAT# pin and FAULT# pin respectively. The 2V8 pin voltage is enabled and regualted typical 2.8V if input voltage POR is granted and the chip is enabled. This pin is capable of sourcing 2mA output current and can be used as the power present indication. Figure 4 shows the 2V8 pin voltage vs. the input voltage. The STAT# pin is an open-drain logic output that is pulled low when the charger is in charge states (from the beginning of a charge cycle to the end-of-charge condition is qualified.) The EOC condition is: the battery voltage is within VCH and VRECHG and the charge current falls belows a user programmable EOC current threshold. The STAT# pin is set to high impedance and latched once the EOC condition is granted. The latch is released at the beginning of another charge or recharge cycle. The FAULT# pin is an open-drain logic output that is pulled when any fault conditions occur. The fault conditions include the external battery temperature fault, the battery removal , or a timeout fault. The STAT# pin is set to high impedance when the fault conditions are removed.

10uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 r e t e m a r aPl o b m ySs n o i t i d n o C t s eTn iMp yTx aMs t i n U t u p n I y l p p u S e g n a R t u p n I y l p p uSV N I 5 .4- -5 .5V VN I d l o h s e r h T g n i s i RR O P --4 .30 .4V VN I d l o h s e r h T g n i l l a F R O P --4 .2- -V t n e r r u C y b d n a t S t n e r r u C k n i S n i P T ABI B S w o L = N E r o g n i t a o l f N IV- -- -0 .2A u t n e r r u C y l p p u S n i PN IVI N I V w o L = N E d n a g n i t a o l f T AB- -0 2- -A u t n e r r u C y l p p u S n i PN IVI N I V g n i t a o l f N E d n a g n i t a o l f T AB- -7 .0- -A m n o i t a l u g e R e g a t l o V e g a t l o V t u p t uOV H C 1 4 - 1 0 0 8 Pu9 5 0 .40 1 .41 4 1 .4V e g a t l o V t u p t uOV H C 2 4 - 1 0 0 8 Pu8 5 1 .40 2 .42 4 2 .4V e g a t l o V t u o p o rDV T A B e g a k c a p 4 x 4 , A 5 . 0 , V 0 . 4=- -0 21- -V m e g a t l o V t u o p o rDV T A B e g a k c a p 3 x 3 , A 5 . 0 , V 0 . 4=- -0 21- -V m Storage Temperature ESD Rating (Note 2) (VIN = 5V, TA = 25OC, unless otherwise specified) Absolute Maximum Rating Thermal Information Recommended Operation Conditions

Electrical Characteristics

Package Thermal Resistance (Note 3) Power Dissipation, PD @ TA = 70OC

11uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Note 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These are for stress ratings. Functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may remain possibility to affect device reliability. Note 2. Devices are ESD sensitive. Handling precaution recommended. Note 3. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of JEDEC 51-3 thermal measurement standard. Note 4. The device is not guaranteed to function outside its operating conditions. r e t e m a r aPl o b m ySs n o i t i d n o C t s eTn iMp yTx aMs t i n U t n e r r u C e g r a h C t n e r r u C e g r a h C t n a t s n oCI G H C R F E R I k 8 7 =, ΩV T A B V 7 . 3=0 090 0 010 0 11A m t n e r r u C e g r a h C t n a t s n oCI G H C V F E R I V , V 2 . 1 >T A B V 7 . 3=0 340 940 55A m t n e r r u C e g r a h C t n a t s n oCI G H C V F E R I V , V 4 . 0 <T A B V 7 . 3=- -5 9- -A m t n e r r u C e g r a h C e l k c i rTI K R T R F E R I k 8 7 =, ΩV T A B V 0 . 2=- -5 9- -A m t n e r r u C e g r a h C e l k c i rTI K R T V F E R I V , V 2 . 1 >T A B V 0 . 2=- -5 4- -A m t n e r r u C e g r a h C e l k c i rTI K R T V F E R I V , V 4 . 0 <T A B V 0 . 2=- -9- -A m d l o h s e r h T e g r a h C - f o - d nEI R E T R N I M I k 8 7 =Ω 580 015 11A m e g a t l o V d l o h s e r h T d l o h s e r h T e g a t l o V e g r a h c eRV G H C R 2 4 - 1 0 0 8 Pu- -0 .4- V d l o h s e r h T e g a t l o V e g r a h c eRV G H C R 1 4 - 1 0 0 8 Pu- -9 .3- -V e g a t l o V d l o h s e r h T e g r a h C e l k c i rTV N I M 4 7 .28 .26 8 .2V

8 V 2

e g a t l o V t u p t u O8 V2V 8 V 2 4 7 .20 8 .26 8 .2V t n e r r u C g n i c u o S 8 V2I 8 V 2 2- -- -A m r o t a l l i c s O d o i r e P n o i t a l l i c sOT C S O C E M I T F n 5 1=7 .20 .33 .3s m g n i r o t i n o Me r u t a r e p m e T d l o h s e r h T e r u t a r e p m e T w oLV N I M TV 8 V 2 V 8 . 2=5 3 .10 4 .15 4 .1V d l o h s e r h T e r u t a r e p m e T h g iHV X A M T V 8 V 2 A 1 0 0 8 P u , V 8 . 2=9 447 645 84V m V 8 V 2 B 1 0 0 8 P u , V 8 . 2=2 330 538 63V m d l o h s e r h T l a v o m e R y r e t t aBV V M R V 8 V 2 V 8 . 2=- -4 2 .2- -V k c a b d l o F t n e r r u C e g r a h C d l o h s e r h T T D L O F 5 010 215 3 1 OC n i a G k c a b d l o F t n e r r uCG D L O F -0 01- -/ A mOC t u p t u Od n a t u p n I c i g o L h g i H t u p n I N E O T 0 .2- -- -V w o L t u p n I N E d n a N E O T --- -8 . 0 V h g i H t u p n I N I M I d n a F E R I 2 .1- -- -V w o L t u p n I N I M I d n a F E R I --- -4 .0V t n e r r u C k n i S # T L U A F d n a # T A TSV 4 . 0 = e g a t l o V n iP5 --- -A m

12uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 22 .533 .544 .555 .5 0.796 0.797 0.798 0.799 0.8 0.801 0.802 22 .533 .544 .555 .5 0.1 0.2 0.3 0.4 0.5 2 2.5 3 3.5 4 4.5 5 5.5 2.5 2.6 2.7 2.8 2.9 2 2.5 3 3.5 4 4.5 5 5.5 Typical Operation Characteristics 2V8 Voltage vs. Input Voltage Input Voltage VIN (V) 2V8 Output Voltage (V) IREF Voltage vs. Input Voltage Input Voltage VIN (V) RIREF = 82kΩ IREF Pin Voltage (V) Leakage Current vs Battery Voltage Battery Voltage VBAT (V) Input Voltage = Floating Battery Leakage Current (uA) Shutdown Current vs. Input Voltage Input Voltage VIN (V) EN = GND Input Current (uA) 2V8 Voltage Load Regulation 2V8 Output Current (mA) 2V8 Output Voltage (V) 2.6 2.65 2.7 2.75 2.8 2.85 2.9 0 2 4 6 8 10 12 100 150 200 250 300 350 400 0123456 FAULT# and STAT# Sinking Capability Pin Sinking Current (mA) Pin Voltage (mV)

13uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 TIME (0.2V/Div) EN (2V/Div) STAT# (5V/Div) VBAT (0.5V/Div) ICHG (0.5A/Div) VIN (5V/Div) STAT# (5V/Div) VBAT (0.5V/Div) ICHG (0.5A/Div) Typical Operation Characteristics Typical Charge Cycle I Typical Charge Cycle II TIME Pin Waveform Time (250us) CTIME = 10nF Power on by VIN Turn on by EN

14uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002

Application Information

The uP8001 is a highly integrated single-cell Li-ion or Li- Polymer batter charger specifically designed to work with AC adaptor or USB port. The uP8001 charges battery with a minimum current when the battery voltage is lower than 2.8V. The charger works at constant current mode when the battery voltage is between 2.8V and 4.2V, the charge current is programmable up to 2A by an external resistor. The charge works at constant voltage mode when the battery voltage is 4.2V. When the input voltage is removed, the uP8001 automatically enters a low quiescent current sleep mode, dropping the battery drain current to 1uA. Other features include thermal foldback charge current, NTC thermistor interface and automatic recharge. The uP8001 is available in thermal-enhanced and space-saving VQFN and VDFN packages. Input and Output Capacitors Selection The charger acts like a constant current and constant linear regulator at CCM and CVM respectively. Input and output capacitors are necessary for stable operation of the charger. Place a minimum 2.2uF input capacitor and a minimum 2.2uF output capacitor phycially near the charger. PCB Layour Consideration The PCB acts as main heat dissipation path for uP8001. Propoer PCB design maximizes heat dissipation capability and the charge current capability. The exposed pad should be properly soldered to the PCB and connected to inner ground plane through as many thermal vias as possible. Place 9 thermal vias on the thermal pad of VQFN4x4 package and place 8 thermal vias on the thermal pad of VDFN3x3 package. Also connect as much top-layer cooper as possible to the exposed pad of VDFN package to minimize the thermal resistance. BAT TEMP IREF IMIN VIN FAULT# STAT# TIME GND TOEN EN 2V8 VIN VIN BAT BAT AGND FAULT# STAT# TIME GND AGND Vias for GND Vias for GND Vias for 2V8 VDFN4x4 – 16L VDFN3x3 – 10L Figure 1. Top Layer Layout Examples

15uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Note 1.Package Outline Unit Description: BSC: Basic. Represents theoretical exact dimension or dimension target MIN: Minimum dimension specified. MAX: Maximum dimension specified. REF: Reference. Represents dimension for reference use only. This value is not a device specification. TYP. Typical. Provided as a general value. This value is not a device specification. 2.Dimensions in Millimeters. 3.Drawing not to scale. 4.These dimensions no not include mold flash or protrusions. Mold flash or protrusions shell not exceed 0.15mm.

Package Information

Recommended Solder Pitch and Dimensions

1.00 MAX

0.18 - 0.300.50 BSC 2.90 - 3.10 2.90 - 3.10 1.55 - 1.65 0.00 - 0.050.20 REF 2.35 - 2.45 1.55 - 1.65 1.95 - 2.05 3.55 - 3.65 0.18 - 0.300.50 BSC

16uPI Semiconductor Corp., http://www.upi-semi.com Rev. F00, File Name: uP8001A/B-DS-F0002 Note 1.Package Outline Unit Description: BSC: Basic. Represents theoretical exact dimension or dimension target MIN: Minimum dimension specified. MAX: Maximum dimension specified. REF: Reference. Represents dimension for reference use only. This value is not a device specification. TYP. Typical. Provided as a general value. This value is not a device specification. 2.Dimensions in Millimeters. 3.Drawing not to scale. 4.These dimensions no not include mold flash or protrusions. Mold flash or protrusions shell not exceed 0.15mm. 3.90 - 4.10 Pin 1 mark Bottom View - Exposed Pad 2.60 - 2.70 0.25 - 0.35 4.55 - 4.65 3.90 - 4.10 0.00 - 0.05

0.20 BSC

Recommended Solder Pad Pitch and Dimensions 0.25 - 0.35