ACT2802C

ACT2802_16 ACTIVE-SEMI | Alldatasheet

Document overview

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Technical content

FEATURES

 Dedicated Single Chip Solution for Mobile Power With Minimal Component Count  5V/2.5A Constant Output Current Limit in Boost Mode  2.5A Switching Charger Current Limit  Programmable 4.1V to 4.35V Battery Voltage  95% Boost Efficiency (Vbat=4.1V)  Adaptive to 10mA-2400mA Input Sources  Battery Disconnection at Output Short  <10µA Low Battery Leakage Current at HZ Mode During Storage  Boost Auto Turn-off at No Load and Push Button Turn-on  Battery Over Current, Over Voltage, Over Temperature and Short Circuit Protections  Boost Auto Startup with Load Detection  Up to 3.0A Input Current Limit with Prioritized Power Path to Output  5V+/-100mV Output Voltage in Boost Mode  1.1MHz/0.55MHz Switching Frequencies  2.2uH Inductor and Low Profile Ceramic Capacitor  4 LEDs Battery Level and Status Indication  Battery Impedance Compensation  Full Cycle of Battery Charge Management Preconditioning, Fast Charge, Top off and End of Charge  Charge Current Foldback at 110°C Die Temperature  IC Over Temperature Protection at 160°C  QFN4x4-24 Package

APPLICATIONS

 Backup Battery Pack  Power Bank  Mobile Power  Standalone Battery Charger with USB Output GENERAL DESCRIPTION ACT2802/ACT2802B/ACT2802C is a space-saving and high-performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2802/ACT2802B/ACT2802C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2802/ACT2802B/ACT2802C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2802/ACT2802B/ACT2802C provides a direct power path from input to output with programmable current limit while providing power to switching charger. Output has higher priority than battery charger if the programmed input current limit is reached. ACT2802/ACT2802B/ACT2802C charges battery with full cycle of preconditioning, fast charge with constant current and constant voltage until end of charge. The battery charger is thermally regulated at 110°C with charge current foldback. ACT2802/ACT2802B/ACT2802C boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. ACT2802/ACT2802B/ACT2802C provides 3.5mA constant currents to drive 4 LEDs to indicate battery level and charge status. Battery impedance is compensated for battery level indication. 5V/2.5A Backup Battery Pack Manager Rev 7, 15-Jul-16 ACT2802/ACT2802B/ACT2802C Boost Output Voltage (V) Output Current (A) 1.2 1.5 1.8 5.5 5.0 4.5 4.0 3.5 3.0 Boost CC/CV Profile VBAT =4.1V VBAT =3.2V VBAT =3.7V Innovative PowerTM - 1 - www.active-semi.com Copyright © 2016 Active-Semi, Inc.

Rev 7, 15-Jul-16 Innovative PowerTM - 2 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C

ORDERING INFORMATION

PART NUMBER OUTPUT FLASHLIGHT PB TURN OFF BOOST LEDS AL- WAYS ON IN BOOST LATCH OFF AT BOOST UVLO BOOST LIGHT LOAD OFF TIME PACKAGE ACT2802QL-T1028 5V/2.5A No Yes No Yes 16s QFN44-24 ACT2802BQL-T1028 5V/2.5A Yes No Yes Yes 16s QFN44-24 ACT2802CQL-T1028 5V/2.5A Yes No No Yes 16s QFN44-24 PIN CONFIGURATION

Rev 7, 15-Jul-16 Innovative PowerTM - 3 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 HZ Boost/high-Z mode enable pin, internally pulled up by a 3MΩ resistor to battery. When HZ pin is pulled ground, boost is enabled if VIN is not present. 2 PB Push button input, connect a push button from this pin to AGND, internally pulled up by a 3MΩ resistor to battery. PB starts up boost converter if HZ pin is grounded and VIN is not present. For ACT2802B/ACT2802C, if this pin is pushed for 3s, flashlight is enabled. 3 AGND Logic Ground. AGND must be connected to PGND externally through ground plane. 4 nPG Drive external P-FET to protect output short circuit and leakage during shutdown. nPG pin is pulled up to VOUT internally. nPG pin is pulled low if VOUT is in the range. 5 ILIM Input current limit setting pin. Connect a resistor from this pin to AGND to set the input current limit. The current setting ranges from 1.0A-3.0A. 6 VIN USB or AC adaptor input. When VIN is valid, charge and power path is enabled. 7, 8 VOUT Output pin. Bypass to PGND with a high quality low ESR and ESL ceramic capacitor placed as close to the IC as possible. 9, 10 SW Internal switch to output inductor terminal.

11 PGND

Power ground. PGND is connected to the source of low-side N-channel MOSFET and the MOSFET’s gate driver. PGND must be connected to AGND externally through ground plane.

12 BAT

Battery input. Connected to the battery pack positive terminal to provide power in High- Z mode. Bypass to PGND with a high quality ceramic capacitor placed as close to the IC as possible. 13 CSP Positive terminal of charge current sense input. Kevin sense is required with 10nF ceramic capacitor right across CSP and CSN pins. 14 CSN Negative terminal of charge current sense input. 15 IOST Output current setting. Connect a resistor from this pin to AGND to set output constant current. The current setting ranges from 1.0A-2.5A. 16 ICST Fast charge current setting pin. Connect a resistor from this pin to AGND to set the charge current. The current setting ranges from 1.0A-2.5A. 17 BTV Battery termination voltage setting. Connect a resistor from this pin to AGND to program battery charge termination voltage. 18 LED1 Battery level indica tor. An internal 3.5mA sink current limit is built in. 19 LED2 Battery level indica tor. An internal 3.5mA sink current limit is built in. 20 LED3 Battery level indica tor. An internal 3.5mA sink current limit is built in. 21 LED4 Battery level indica tor. An internal 3.5mA sink current limit is built in. 22 RIMC Battery impendence compensation input. Connect to a resistor from this pin to APNG to program the battery impedance. 23 BLVS Battery level voltage shift. Connect a resistor from this pin to AGND to shift the battery LED indication thresholds.

24 TH/FLD

TH: ACT2802QL-T1028 Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K pulled down resistor. FLD: ACT2802BQL-T1028/ACT2802CQL-T1028 Open-drain flashlight driver. A internal switch can handle up to 50mA. 25 EP Exposed pad. Must be soldered to ground on the PCB.

Rev 7, 15-Jul-16 Innovative PowerTM - 4 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE UNIT All the Pin to PGND and AGND -0.3 to 6.5 V Junction to Ambient Thermal Resistance 40 °C/W Maximum Power Dissipation 2.5 W Operating Junction Temperature -40 to 150 °C Storage Junction Temperature -40 to 150 °C Lead Temperature (Soldering 10 sec.) 300 °C Operating Ambient Temperature -40 to 85 °C : Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rati ng conditions for long periods m ay affect device reliability.

Rev 7, 15-Jul-16 Innovative PowerTM - 5 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input Current Limit Input Voltage Range 4.5 5.5 V VIN Over Voltage Protection VIN rising, VIN_OVP 5.5 6.0 6.5 V Input Voltage Validation Time VIN_UVLO<VIN<VIN_OVP 32 ms Input Current Limit Setting Range RILIM=0.806kΩ—2.4k Ω 1.0 3.0 A Input Current Limit RILIM=0.806kΩ 3.0 A Input Current Limit Gain 2000 Leakage Current from VOUT to VIN in Boost Mode 3.0V<VBAT<4.35V, Ta=25℃ 0 10 µA Battery Discharge Current in High-Z Mode 3.0V<VBAT<4.35V, Ta=25℃ 7.5 15 µA Power Switches VIN-to-VOUT FET on Resistance 80 m Ω VOUT-to-SW FET on Resistance 60 mΩ SW-to-PGND FET on Resistance 65 m Ω Buck Converter Switching Frequency -15% 1.1 +15% MHz High Side Switch Peak Current Limit 4.5 6 A Minimum On-time 100 ns Over Temperature Protection (OTP) OTP rising 160 ℃ OTP Hysteresis OTP falling 35 ℃ Charge Mode Charge Current Setting Range Rcs=25mΩ, RICST=20kΩ—50k Ω 1.0 2.5 A Charge Current Setting (ICHRG) Rcs=25mΩ, RICST=43.2kΩ 2.1 A Thermal Regulation Temperature 110 ℃ Battery Adjust Voltage(VBAJ) Rbtv=25kΩ 0.1 V End of Charge (EOC) Voltage -0.5% 4.1+V BAJ 0.5% V EOC Voltage Accuracy Rbtv=0 4.1 V Battery Over Voltage Threshold VBAT rising 4.6 V Battery Over Voltage Threshold Hysteresis VBAT falling 200 mV

ELECTRICAL CHARACTERISTICS

(VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 7, 15-Jul-16 Innovative PowerTM - 6 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Fast Charge Current VBAT=3.5V I CHRG A Precondition Charge Current 2.4V≤ VBAT≤2.8V, Percent of ICHRG 10 % Precondition Voltage Threshold VBAT rising, Rbtv=0 2.8 V Precondition Voltage Threshold Hysteresis 130 mV Low VBAT Charge Current VBAT=1V, R ICST=43.2kΩ 200 mA EOC Current Threshold VBAT=4.2V, percent of the fast charge current 15 % Charge Restart Voltage Threshold 200 mV TH Upper Temperature Voltage Threshold Cold detect NTC thermistor, ACT2802QL-T1028 1.5 V TH Lower Temperature Voltage Threshold Hot detect NTC thermistor, ACT2802QL-T1028 0.3 V TH Hysteresis ACT2802QL-T1028 50 mV TH Internal Pull-up Current ACT2802QL-T1028 60 µA LED Flash Frequency LED flash 1s on and 1s off 0.5 Hz Charge Current Foldback Charge Current Reduction Threshold1 of Vout1 Starting foldback point 4.59 4.7 4.81 V Charge Current Reduction Threshold2 of Vout1 Stop foldback point, RCS=25mΩ, RICST=43.2kΩ 4.57 V Boost Mode Input Voltage Operation Range 3.0 4.5 V Switching Frequency -15% 0.55 +15% MHz Input Voltage UVLO VBAT rising 3.3 V Input Voltage UVLO Hysteresis VBAT falling 400 mV Output Voltage (VOUT) Ta=25℃ 4.97 5.05 5.10 V Output Voltage Accuracy All conditions -3 VOUT 2 % Output Voltage Transient Response 80mA-1A-80mA, 0.1A/us 4.75 5.25 V Output Over Voltage Protection VOUT rising 5.7 V Output Over Voltage Protection Hysteresis VOUT falling 300 mV (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 7, 15-Jul-16 Innovative PowerTM - 7 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Output Current Regulation Range Rcs=25mΩ, RIOST=37.4kΩ—93.7kΩ 1.0 2.5 A Output Current Limit Rcs=25mΩ, RIOST=91kΩ 2.4 A The Maximum Voltage Across VRcs All conditions 200 mV Minimum On-Time 100 ns Low Side Switch Peak Current Limit VBAT=3.6V, VOUT=5V 5.6 6.8 A Soft-Startup Time 400 µs Under Voltage Protection (UVP Threshold) VOUT falling 4.25 V VOUT rising 4.6 V UVP Blanking Time During Startup 3 ms UVP Sense Detection Time VOUT falling 20 µs Restart After UVP Hiccup mode 2 s Light Load Current Shut off Threshold VBAT=3.7V, Rcs=25mΩ,RIOST=91kΩ 40 100 mA Light Load Current Detect Time 16 s HZ Pin High Voltage HZ voltage rising 0.9 1.4 V HZ Pin Low Voltage HZ voltage falling 0.4 0.75 V HZ Internal Pull-up Resistor 3 M Ω PB Turn off Boost Time ACT2802QL-T1028 1.5 s PB Turn on Boost Time All condition 30 ms LED Indication Time PB is pushed and released, ACT2802QL-T1028/ACT2802CQL-T1028 5 s Mode Transition Transition Waiting Time between Charge Mode and Boost Mode TRANTIME 2 s Battery Level Indication Battery Impedance Compensation Range 40 500 m Ω Battery Impedance Compensation Rcs=25mΩ, RIMC=200kΩ 200 m Ω PB High Input Voltage PB voltage rising 0.9 1.4 V PB Low Input Voltage PB voltage falling 0.4 0.75 V (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 7, 15-Jul-16 Innovative PowerTM - 8 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT PB Internal Pull-up Resistor 3 M Ω Flashlight Driver Flashlight Voltage UVLO Flashlight rising, ACT2802BQL-T1028/ACT2802CQL-T1028 3.3 V Flashlight Voltage UVLO Threshold Flashlight falling, ACT2802BQL-T1028/ACT2802CQL-T1028 2.9 V Flashlight Driver Current The current at FLD pin, ACT2802BQL-T1028/ACT2802CQL-T1028 50 mA PB Turn on Flashlight Time ACT2802BQL-T1028/ACT2802CQL-T1028 3.0 s PB Turn off Flashlight Time ACT2802BQL-T1028/ACT2802CQL-T1028 3.0 s (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 7, 15-Jul-16 Innovative PowerTM - 9 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C FUNCTIONAL BLOCK DIAGRAM FOR ACT2802QL-T1028 FUNCTIONAL BLOCK DIAGRAM FOR ACT2802BQL-T1028/ ACT2802CQL-T1028

Rev 7, 15-Jul-16 Innovative PowerTM - 10 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C FUNCTIONAL DESCRIPTION ACT2802/ACT2802B/ACT2802C is a complete battery charging and discharging power management solution for applications of single-cell lithium-based backup battery pack or power bank. There is a power path from input to output with programmable input current limit. When output is over loaded, the input switch Q1 starts going into linear mode and thus output voltage starts to drop. If output voltage drops below 4.25V, the input switch Q1 turns off and restart in 2 seconds. With the advanced ACT2802/ACT2802B/ ACT2802C architecture, a synchronous buck/boost converter is connected from VOUT to switching node (SW). With the bidirectional architecture, the converter could be configured as either buck to charge battery or boost to discharge battery. With switching charger and discharger, the higher charge current and higher conversion efficiency are achieved. Modes of Operation ACT2802/ACT2802B/ACT2802C has 3 operation modes: charge mode, boost mode and high- impedance (HZ) mode. In charge mode, the input current limit Q1 is enabled and Q2 and Q3 operate as a buck converter to charge battery. In boost mode, Q2 and Q3 operate as boost converter to step battery voltage up to +5V at VOUT, and the current limit switch Q1 is turned off, and the reverse current from VOUT to VIN is blocked. In HZ mode, all the switches are turned off and the drainage current from battery is very low. ACT2802 system operation flow chart as shown in Figure 1, and ACT2802B/ACT2802C system operation flow chart as shown in Figure 2. Any transitions between boost mode and charge mode go through HZ mode by turning off all the switches Q1-Q3 into HZ mode for 2 seconds before enabling the other mode. The modes are determined by HZ pin and VIN pin as shown in the table 1. A valid VIN voltage forces ACT2802/ACT2802B/ACT2802C into charge mode. Boost mode is enabled if HZ pin is pulled low and VIN is invalid or not present. For ACT2802/ ACT2802B/ACT2802C, when HZ=0, if PB is pulled low more than 30ms, boost converter is enabled. For ACT2802, during boost on, if PB is pressed more than 1.5s, boost converter will be off. Flashlight ACT2802B/ACT2802C has an flashlight function. Once PB is pressed for more than 3 seconds, the flashlight is switched on. The driver will deliver up to 50mA current to the flashlight. During flashlight on, if PB is pressed for 3 se conds, flashlight will be switched off. Figure 1: ACT2802 System Operation Flow Chart Table 1: Mode Selection HZ PIN 0 0 1 1 VIN Valid 0 1 0 1 Mode Boost Charge HZ Charge

Rev 7, 15-Jul-16 Innovative PowerTM - 11 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C Figure 2: ACT2802B/ACT2802C System Operation Flow Chart FUNCTIONAL DESCRIPTION Latch-Off ACT2802/ACT2802B/ACT2802C has latch off function. If discharging stops due to battery cut-off, and latch off will be triggered, it would prevent battery from discharging again, latch-off is released when input power is recycled. Input Current Limit When the input current reaches the programmed value, switch Q1 goes into linear mode and output voltage starts to drop. When output voltage drops to 4.25V, hiccup mode is triggered and switch Q1 turns off and restart in 2 seconds. Switching Battery Charger ACT2802/ACT2802B/ACT2802C is configured in charge mode (buck mode) when VIN is valid. In this mode, a battery is charged with preconditioning, fast charge, top-off and end of charge (EOC). The typical charge management is shown in Figure 3 and Figure 4. CC/CV Regulation Loop There are CC/CV regulation loops built in ACT2802/ ACT2802B/ACT2802C, which regulates either current or voltage as necessary to ensure fast and safe charging of the battery. In a normal charge cycle, this loop regulates the current to the value set by the external resistor at the ICST pin. Charging continues at this current until the battery cell voltage reaches the termination voltage. At this point the CV loop takes over, and charge current is allowed to decrease as necessary to maintain charging at the termination voltage. Precondition Charge A new charging cycle begins with the precondition state, and operation continues in this state until VBAT exceeds the precondition threshold voltage. When operating in precondition stat e, the cell is charged at a reduced current, 10% of the programmed maximum fast charge constant current. Once V BAT reaches the precondition threshold voltage the state machine jumps to the fast charge state. Fast Charge If battery voltage is above preconditioning threshold, buck converter charges battery with constant current. In fast charge state, the ACT2802/ ACT2802B/ACT2802C charges at the current set by the external resistor connected at the ICST pin During a normal charge cycle fast charge continues in CC mode until V BAT reaches the charge termination voltage, at which point the ACT2802/ ACT2802B/ACT2802C charges in top off state. Top Off With the battery voltage approaches the EOC voltage set by the BTV pin. Charge current decreases as charging continues. In the top off state, the cell is charged in constant voltage (CV) mode. During a normal charging cycle charging proceeds until the charge current decreases below the end of charge (EOC) threshold, defined as 15% of fast charge current. When this happens, the state machine terminates the charge cycle and jumps to the EOC state.

Copyright © 2016 Active-Semi, Inc. btv is selected based on the battery voltage rating. 1% accuracy resistor is recommended for Rbtv.

4 LEDs ON/OFF and flash show the charge status

table 2. The LED status is based on battery voltage Figure 7. Input current limit has built-in soft startup Figure 5. Battery terminal voltage setting circuit Figure 6. Battery level voltage shift setting circuit

Copyright © 2016 Active-Semi, Inc. cold thresholds, respectively. Figure 19. Battery thermal circuit

Copyright © 2016 Active-Semi, Inc. Figure 21. ACT2802 typical application circuit

Rev 7, 15-Jul-16 Innovative PowerTM - 19 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 L1 Core 6.5*3*3 Dip 2.2uH 6A 1 Sunlord 2 Q1 AO4503, Rdson=19m Ω at VGS = - 4.5 V 1 AOS

3 Q3 MMBT3906 1 Murata/TDK

4 D1 MBR1020VL, 20V/1A Schottky 1 Diodes

5 D2 1N4148, Vf=0.7V, 75V Schottky 1 Murata/TDK

6 C2,C5,C13,C14 Ceramic capacitor, 22uF/10V, X7R, 1206 4 Murata/TDK

7 C3 Ceramic capacitor, 4.7uF/10V, X7R, 1206 1 Murata/TDK 8 C4 Ceramic capacitor, 0.1uF/10V, X7R, 0603 1 Murata/TDK

9 C6 Ceramic capacitor, 10nF/10V, X7R, 0603 1 Murata/TDK

10 C7 Ceramic capacitor, 4.7nF/10V, X7R, 0603 1 Murata/TDK 11 C8,C11,C12 Ceramic capacitor, 2.2uF/10V, X7R, 0603 3 Murata/TDK 12 C16 Ceramic capacitor, 4.7uF/10V, X7R, 0603 1 Murata/TDK

13 R1 Chip Resistor, 750 Ω, 1/10W, 1%, 0603 1 Murata/TDK

14 R2,R2A Chip Resistor, 50m Ω, 1/4W, 1%, 1206 2 SART

15 R3 Chip Resistor, 93.1kΩ , 1/10W, 1%, 0603 1 Murata/TDK 16 R4,R15 Chip Resistor, 43.2k Ω, 1/10W, 1%, 0603 2 Murata/TDK

17 R5 Chip Resistor, 25kΩ , 1/10W, 1%, 0603 1 Murata/TDK

18 R6 Chip Resistor, 10kΩ , 1/10W, 5%, 0603 1 Murata/TDK

19 R7 Chip Resistor, 60kΩ , 1/10W, 1%, 0603 1 Murata/TDK

20 R8 Chip Resistor, 80kΩ , 1/10W, 1%, 0603 1 Murata/TDK

21 R9 Chip Resistor, 0.47 Ω, 1/8W, 5%, 0805 1 Murata/TDK 22 R10 Chip Resistor, 2.7 Ω, 1/4W, 5%, 1206 1 Murata/TDK

23 R11 Chip Resistor, 200k Ω, 1/10W, 5%, 0603 1 Murata/TDK

24 R12,R13 Chip Resistor, 715k Ω, 1/10W, 5%, 0603 2 Murata/TDK

25 R14,R16 Chip Resistor, 49.9kΩ , 1/10W, 5%, 0603 2 Murata/TDK

26 R17 Chip Resistor, 75k Ω, 1/10W, 1%, 0603 1 Murata/TDK

27 R18,R20 Chip Resistor, 100k Ω, 1/10W, 5%, 0603 2 Murata/TDK

28 R21 Chip Resistor, 2.2 Ω, 1/10W, 5%, 0603 1 Murata/TDK

29 R23 Chip Resistor, 100 Ω, 1/10W, 5%, 0603 1 Murata/TDK

30 LED1,LED2,

LED3,LED4 LED, 0603, Blue 4 LED Manu

31 PB Push Button Switch 1 Nikkai Omron

32 USB 10.2*14.6*7mm, 4P 1

33 Micro-USB MICRO USB 5P/F SMTB 1

34 U1 IC, ACT2802QL-T1028, T-QFN 44-24 1 ACT

Table 5: BOM List

Copyright © 2016 Active-Semi, Inc. Figure 22. ACT2802B/ACT2802C typical application circuit

Rev 7, 15-Jul-16 Innovative PowerTM - 21 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C Table 6: BOM List ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 L1 Core 6.5*3*3 Dip 2.2uH 6A 1 Sunlord 2 Q1 AO4503, Rdson=19mΩ at VGS = - 4.5 V 1 AOS

4 D1 MBR1020VL, 20V/1A Schottky 1 Panjit

5 D2 1N4148, Vf=0.7V, 75V Schottky 1 Murata/TDK 7 C3 Ceramic capacitor, 4.7uF/10V, X7R, 1206 1 Murata/TDK 8 C4 Ceramic capacitor, 0.1uF/10V, X7R, 0603 1 Murata/TDK 10 C7 Ceramic capacitor, 4.7nF/10V, X7R, 0603 1 Murata/TDK 11 C8,C11,C12 Ceramic capacitor, 2.2uF/10V, X7R, 0603 3 Murata/TDK 12 C16 Ceramic capacitor, 4.7uF/10V, X7R, 0603 1 Murata/TDK

13 R1 Chip Resistor, 750Ω, 1/10W, 1%, 0603 1 Murata/TDK

14 R2,R2A Chip Resistor, 50mΩ, 1/4W, 1%, 1206 2 SART

15 R3 Chip Resistor, 93.1kΩ, 1/10W, 1%, 0603 1 Murata/TDK 16 R4,R15 Chip Resistor, 43.2kΩ, 1/10W, 1%, 0603 2 Murata/TDK

17 R5 Chip Resistor, 25kΩ, 1/10W, 1%, 0603 1 Murata/TDK

18 R7 Chip Resistor, 60kΩ, 1/10W, 1%, 0603 1 Murata/TDK

19 R8 Chip Resistor, 80kΩ, 1/10W, 1%, 0603 1 Murata/TDK

20 R9 Chip Resistor, 0.47Ω, 1/8W, 5%, 0805 1 Murata/TDK 21 R10 Chip Resistor, 2.7Ω, 1/4W, 5%, 1206 1 Murata/TDK

22 R11 Chip Resistor, 200kΩ, 1/10W, 5%, 0603 1 Murata/TDK

23 R12,R13 Chip Resistor, 715kΩ, 1/10W, 5%, 0603 2 Murata/TDK

24 R14,R16 Chip Resistor, 49.9kΩ, 1/10W, 5%, 0603 2 Murata/TDK

25 R17 Chip Resistor, 75kΩ, 1/10W, 1%, 0603 1 Murata/TDK

26 R18,R20 Chip Resistor, 100kΩ, 1/10W, 5%, 0603 2 Murata/TDK

27 R21 Chip Resistor, 2.2Ω, 1/10W, 5%, 0603 1 Murata/TDK

28 R22 Chip Resistor, 51Ω, 1/8W, 5%, 0805 1 Murata/TDK

29 R23 Chip Resistor, 100Ω, 1/10W, 5%, 0603 1 Murata/TDK

30 LED1,LED2, LED3,LED4 LED, 0603, Blue 4 LED Manu

31 LED Flashlight 1 LED Manu

32 PB Push Button Switch 1 Nikkai Omron

33 USB 10.2*14.6*7mm, 4P 1

34 Micro-USB MICRO USB 5P/F SMTB 1

35 U1 IC, ACT2802BQL-T1028/ACT2802CQL-T1028,

Rev 7, 15-Jul-16 Innovative PowerTM - 22 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 21, Ta = 25°C, unless otherwise specified) ACT2802-001 Input Current (mA) 3000 2000 1500 1000 500 2500 Output Current (mA) 0 500 1000 1500 2000 2500 ACT2802-002 Charge Current (mA) 2500 2000 1500 1000 500 Vbat (V) 4.0 4.5 ACT2802-003 Charge Efficiency Efficiency(%) 92.0 91.5 91.0 90.5 90.0 89.5 89.0 Vbat (V) ACT2802-005 Battery Charge Current VS. Temperature Battery Charge Current (mA) 3000 2000 1500 1000 500 2500 Temperature (°C) -20 0 20 100 120 140 ACT2802-004 Boost Efficiency Efficiency(%) 100.0 90.0 80.0 70.0 60.0 50.0 40.0 Output Current (mA) 0 300 600 900 1200 1500 1800 2100 2400 Charge Current ACT2802-006 Battery Leakage (µA) 25.0 20.0 15.0 10.0 5.0 Temperature (°C) -20 0 20 40 60 80 120 100 Battery Leakage VS. Temperature (HZ Mode) VBAT = 4.1V VBAT = 3.5V VIN = 5.0V VBAT = 3.5V VIN = 5.0V ICHRG = 2.1A VIN = 5.0V ICHRG = 2.1A VIN = 5.0V VBAT = 3.5V Battery Charge V/I Profile Charge Current VS. Output Current VBAT = 3.7V VBAT = 4.1V VBAT = 3.2V Input Current

Rev 7, 15-Jul-16 Innovative PowerTM - 23 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 21, Ta = 25°C, unless otherwise specified) ACT2802-007 ACT2802-008 Boost Output Voltage VS. Temperature Boost Output Voltage (V) 5.4 5.3 5.2 5.1 5.0 4.9 4.8 Temperature (°C) -30 0 30 60 90 120 150 Boost Output Constant Current Limit VS. Temperature Boost Output Constant Current (mA) 2800 2600 2400 2200 2000 1800 3000 Temperature (°C) -20 0 20 120 140 80 100 Boost Output Voltage VS. Output Current ACT2802-009 Boost Output Voltage (V) 5.1 5.06 5.02 4.98 4.94 4.9 Boost Output Current (mA) 0 500 1000 1500 2000 2500 3000 VBAT = 3.2V VBAT=4.1V ACT2802-011 Boost Standby Current VS. Battery Voltage Standby Current (mA) 057 0.55 0.53 0.51 0.49 0.47 0.45 Battery Voltage(V) ACT2802-012 Battery Leakage (µA) 8.0 5.0 4.0 3.0 2.0 1.0 7.0 6.0 Battery Voltage(V) Battery Leakage VS. Battery Voltage (HZ Mode) ACT2802-010 Boost Output Constant Current Limit VS. VBAT Boost Output Constant Current mA) 2550 2450 2400 2350 2300 2250 2500 Vbat (V) 3.0 3.2 3.4 3.6 3.8 4.0 4.2 VBAT = 3.5V CV= 4.5V Rcs=25mΩ(1%) VBAT = 3.5V VOUT = 5.05V

Rev 7, 15-Jul-16 Innovative PowerTM - 24 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D CH1 CH2 ACT2802-017 VIN = 5.0V VBAT = 4.1V (Schematic as show in Figure 21, Ta = 25°C, unless otherwise specified) CH3 CH1: VIN, 5V/div CH2: VnPG, 5V/div CH3: VOUT, 2V/div TIME: 1s/div Boost Load Transient (80mA-1A-80mA) CH1 CH2 VBAT = 3.4V VOUT = 5.0V IIOST = 2.4A Boost Load Transient (1A-2.1A-1A) ACT2802-014 CH1 CH2 VBAT = 4.2V VOUT = 5.0V IIOST = 1.3A ACT2802-013 CH1: VOUT, 200mV/div CH2: IOUT, 1A/div TIME: 400µs/div CH1: VOUT, 100mV/div CH2: IOUT, 1A/div TIME: 400µs/div VBAT = 3.4V VOUT = 5.0V IIOST = 2.4A ACT2802-016 VBAT = 4.1V VOUT = 5.0V IOUT = 2.4A CH1 CH2 ACT2802-015 VBAT = 3.4V VOUT = 5.0V IOUT = 1.0A CH1 CH2 CH1: VOUT, 20mV/div CH2: VSW, 2V/div TIME: 1µs/div VBAT = 3.4V VOUT = 5.0V IOUT = 2.4A Transition Between Buck Mode and Boost Mode SW and Output Waveforms in Boost Mode SW and Output Waveforms in Boost Mode CH1: VOUT, 20mV/div CH2: VSW, 2V/div TIME: 1µs/div VIN = 5.0V VBAT = 4.1V VIN VnPG VOUT

Rev 7, 15-Jul-16 Innovative PowerTM - 25 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2802/ACT2802B/ACT2802C QFN44-24 PACKAGE OUTLINE AND DIMENSIONS SYMBOL DIMENSION IN MILLIMETERS DIMENSION IN INCHES MIN MAX MIN MAX A 0.700 1.000 0.028 0.040 A1 0.000 0.050 0.000 0.002 A3 0.200 REF 0.008 REF b 0.180 0.300 0.007 0.012 D 4.000 BSC 0.160 BSC E 4.000 BSC D2 2.500 2.800 0.098 0.110 E2 2.500 2.800 0.098 0.110 e 0.500 BSC 0.020 BSC L 0.350 0.450 0.014 0.018 R 0.200 TYP 0.008 TYP

0.160 BSC

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