ACT2804QJ-T0435

Active-Semi, Inc

5V/3.4A Dual Cell Backup Battery Power Manager Rev 2, Feb-04-2016

Manufacturer: Active-Semi, Inc

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Technical content

FEATURES

 Dedicated Single -chip Integrated Battery Power Manager  Dual Cell Battery Charger with Cell Balancing Management  Auto Detection support USB BC1.2, Chinese YD/T 1591 -2009, Apple 2.4A, and Samsung Devices  Passed Apple MFi Test  4.5V-5.5V Input Voltage with 3.4A Input Current Limit  2.4A+1.0A Dual Outputs with CC Regulation  5.07V+/-1% Output with Prioritized Power Path from Input to Output  4.2V/4.35V +/ - 0.5% Battery Charge Voltage Accuracy of Each Cell  Output Plug -in Detection Wakeup and No Load Detection Sleep Mode  Optimized Power Path and Battery Charge Control  <10uA Low Battery Drainage Current  I2C Port for Optimal System Performance and Status Reporting  Configurable Charge, Discharge and HZ modes  >92% Charge and Discharge Efficiency at 3.4A Output for Full Battery Range  4 Modes of LED Operation  Preconditioning for Deeply Depleted Battery  Weak Input Sources Accommodation  Safety:  Input Over-voltage Protection  Nearly Zero Power Short Circuit Protection  Output Over-voltage Protection  Battery Over -charge and Over -discharge Protections  Charge/Discharge Thermal Regulation  TQFN5x5-40 Package

APPLICATIONS

 Backup Battery Pack  Power Bank  Mobile Power  Standalone Battery Charger with USB Output GENERAL DESCRIPTION ACT2804 is a space -saving and dedicated single - chip solution for dual -cell battery charge and discharge. It takes 5V USB input source to charge a dual cell battery with boost configuration in three phases: preconditioning, constant current, and constant voltage. Charge is terminated when the current reaches 10% of the fast charge rate. The battery charger is thermally regulated at 110˚C with charge current foldback. If input 5V is not present, ACT2804 discharge a dual cell battery with buck configuration to provide 5.07V+/-1% to output ports. There is a power path from input to output. The cycle -by-cycle peak current mode control, constant current regulation, short circuit protection and over voltage protection maximize safe operation. ACT2804 provides 4 LED drive pins for battery capacity level and charge status indication to indicate 25%, 50%, 75%, and 75% above battery level with battery impedance compensation. The LED indication patterns are programmable . ACT2804 is available in a thermally enhanced 5mmx5mm QFN55-40 package with exposed pad. 5V/3.4A Dual Cell Backup Battery Power Manager Rev 2, Feb-04-2016 ACT2804 Buck Output CC/CV Buck Output Voltage (V) 6.0 5.0 4.0 3.0 2.0 1.0 Output Current (mA) 0 500 1000 1500 2000 2500 3000 VBAT = 8.2V VBAT = 6.0V 1A Output 2.4A Output CSN2 CSN1 CSP VOUT HSB BAT BATS BATP BATC CBD BATN ICST TH VREG AGNDPB LED1LED2LED3LED4 RIMC 4.7uH ACT2804 PGND 22uF VIN SW 4.5V-5.5V VIN 5.07V/2.4A 5.07V/1A VOUT2 VOUT1 25mΩ 25mΩ 25mΩ 22uF22uF 1uF 22uF 22uF 510Ω 510Ω 47Ω 540k 8k 10k 47nF

ORDERING INFORMATION

PART NUMBER JUNCTION TEMPERATURE PACKAGE PINS BATTERY CELL VOLTAGE ACT2804QJ-T -40˚C to 150˚C QFN55-40 40 4.20V ACT2804QJ-T0435 -40˚C to 150˚C QFN55-40 40 4.35V PIN CONFIGURATION TOP VIEW CSN2 CSN1 CSP VOUT VOUT VIN VIN SCL SDA PGND HSB SW SW BAT BAT BATS BATP BATC CBD LED3 LED2 LED1 PB AGND VREG TH ICST BATN LED4 DP DM HYST RIMC PT LEDLS4 LEDLS3 LEDLS2 LEDLS1 OVGATE OVSENS PGND ACT2804

Rev 2, Feb-04-2016 Innovative PowerTM - 3 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 CSN2 Output current sense negative input for channel 2. 2 CSN1 Output current sense negative input for channel 1. 3 CSP Output current sense positive input. 4, 5 VOUT Power Output Pin. 6, 7 VIN USB or AC Adapter input. 8 OVGATE Output to drive optional external NMOS protect IC from over voltage. 9 OVSENS USB or AC Adapter input sense. 10 SCL I2C clock input. 11 SDA I2C data input. 12 PGND Power ground. Directly connect this pin to IC thermal PAD and connect 10uF or 22uF high quality capacitors from BAT to PGND on the same layer with IC. 13 HSB High side bias pin. Connect a 47nF ceramic capacitor from HSB to SW. 14,15 SW Internal switch connected to a terminal of the output inductor. 16,17 BAT BAT connection. Connect it to battery current sense positive terminal. Bypass BAT pin to PGND pin with high quality ceramic capacitors on the same layer with IC. 18 BATS Battery charge current sense input. Connect to charge sense resistor positive terminal with Kevin sense. 19 BATP Connect to charge sense resistor negative terminal and battery positive terminal. 20 BATC Battery central point connection. Connect to dual battery cell common terminal. 21 CBD Cell balancing discharge. Connect to a discharge resistor from this pin to battery common terminal. 22 BATN Battery negative terminal.

23 ICST

Fast charge current setting pin. Connect a resistor from this pin to AGND to set the charging current. The current setting ranges from 0.5A -1.8A. The voltage at this pin reflects the charge current and discharge current in charge mode and discharge mode, respectively. 24 TH Temperature sensing input. Connect to a battery thermistor terminal.

25 VREG

+5V Bias output. Connect a 1.0uF to this pin. This pin supplies up to 50mA output current. The bias turns on in charge mode and discharge mode. Internal register bit can shut down the bias. Bias turns off in HZ mode.

Rev 2, Feb-04-2016 Innovative PowerTM - 4 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 PIN DESCRIPTIONS PIN NAME DESCRIPTION 26 AGND Logic ground output. Connect this pin to the exposed PGND pad on same layer with IC. 27 PB Push button input. When this pin is pushed for more than 40ms, LED1 -4 indicators are ena- bled for 5 seconds. 28 LED1 Battery level indicator. 29 LED2 Battery level indicator. 30 LED3 Battery level indicator. 31 LED4 Battery level indicator. 32 LEDLS1 LED1 threshold level shift. Connect a resistor from the pin to AGND to shift LED1 threshold. 33 LEDLS2 LED2 threshold level shift. Connect a resistor from the pin to AGND to shift LED2 threshold. 34 LEDLS3 LED3 threshold level shift. Connect a resistor from the pin to AGND to shift LED3 threshold. 35 LEDLS4 LED4 threshold level shift. Connect a resistor from the pin to AGND to shift LED4 threshold. 36 PT LED indication mode input. The 5 modes of LED indication patterns are set by a voltage at this pin. Connect a resistor at the pin to set the voltage and an LED indication pattern. 37 RIMC RIMC Battery impedance compensation input. 38 HYST The hysteresis window setting input. Connect a resistor at the pin to set the hysteresis win- dows for LED1, 2, 3, 4. 39 DM Output port auto detection input. Connected to portable device D-. 40 DP Output port auto detection input. Connected to portable device D+. 41 PGND Exposed pad. Must be soldered to ground plane layer(s) on the PCB for best electrical and thermal conductivity.

Rev 2, Feb-04-2016 Innovative PowerTM - 5 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 ABSOLUTE MAXIMUM RATINGS PARAMETER VALUE UNIT LEDLS1, LEDLS2, LEDLS3, LEDLS4, RIMC, HYST and PT to GND -0.3 to +6 V LED1, LED2, LED3 and LED4 to GND -0.3 to +6 V PB, DM, DP, TH, SCL, SDA and ICST to GND -0.3 to +6 V OVSENS to GND -0.3 to +16 V OVGATE to GND -0.3 to +12 V VIN, VOUT and VREG to GND -0.3 to +6 V CSP to CSN2, CSP to CSN1, CSP to VOUT -0.3 to +0.3 V BAT to BATS, BATS to BATP -0.3 to +0.3 V BATC to BATN -0.3 to +6 V BAT to BATC -0.3 to +6 V BATN to GND -0.3 to +0.3 V CBD to BAT -6 to +0.3 V BATN to CBD -6 to +0.3 V SW to PGND -0.3 to +12 V HSB to SW -0.3 to +6 V Junction to Ambient Thermal Resistance (θJA) 40 ℃/W Operating Junction Temperature (TJ) -40 to 150 ℃ Operating Temperature Range (TA) -40 to 85 ℃ Store Temperature -55 to 150 ℃ Lead Temperature (Soldering, 10 sec) 300 ℃ Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.

Rev 2, Feb-04-2016 Innovative PowerTM - 6 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input Current Limit, Over Voltage Protection, Output Under Voltage Protection Input Voltage Range 4.5 5.5 V Input Over Voltage Protection VIN rising, VIN_OVP 5.5 5.7 5.9 V Input Over Voltage Hysteresis VIN falling, VIN_OVP_HYST 290 mV Input Under Voltage Lock-Out VIN rising, VIN_UVLO 4.2 V Input Under Voltage Lock-Out Hysteresis VIN falling, VIN_UVLO_HYST 200 mV Input Current Limit Setting Range -10% 3.4 +10% A Output Under voltage protection (UVP) VOUT falling, VOUT_UVP 3.65 V Output Under Voltage Protection Hysteresis VOUT rising, VOUT_UVP_HYST 200 mV Q1 wait time in hiccup mode 3 s Boost Mode/Charge Mode Switching Frequency -15% 400 +15% KHz Precondition Voltage Threshold of Each Cell VBAT1,2 rising 2.8 V Preconditioning current Percentage of fast charge current 15 % Boost Charger UVLO VOUT rising, BST_UVLO 4.2 V Battery End-Of-Charge Voltage VBAT_EOC (ACT2804QJ-T) -0.5% 4.2 +0.5% V VBAT_EOC (ACT2804QJ-T0435) -0.5% 4.35 +0.5% V End of Charge Detection Current Percentage of fast charge current 10 % Buck mode/Discharge Buck Under Voltage Lock-Out VABT falling, VBAT1, 2 2.9 V VOUT Output Regulation Voltage VOUT1 and VOUT2 Current Limit RCS1=25mΩ, ICC1 1.05 1.25 1.40 A RCS2=25mΩ, ICC2 2.45 2.65 2.85 A

ELECTRICAL CHARACTERISTICS

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

Rev 2, Feb-04-2016 Innovative PowerTM - 7 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Buck Converter Under Voltage Protection Threshold VOUT falling goes into hiccup 3.65 V Buck Converter Over Voltage Protection Threshold VOUT rising, BCK_OVP 5.7 V Buck Convert Hiccup Time 3.4 s Buck Converter Light-Load Cut-off Current 5 10 15 mA Buck Converter Light-Load Cut-off Deglitch Time 12.5 s High Side Switch Peak Current Limit All condition 4.5 A Over Temperature Protection OTP 160 ℃ Over Temperature Protection Hysteresis OTP_HYST 20 ℃ Battery Protection Battery Over Charge Current 2.6 3 A Battery Over Voltage Percentage of EOC Voltage 101.5 102.5 103.5 % Battery Under Voltage and Short Circuit Protection 1.6 V Preconditioning timer If timer expires, goes to latch-off 1 hr TH Pull-up Current Charge mode 140 uA Discharge mode 100 uA TH High Threshold Charge mode 2.5 V Discharge mode 2.5 V TH Low Threshold Charge mode 1 V Discharge mode 0.57 V System Management VREG Output Current 50 mA PB Rising Threshold PB rising, discharge mode 0.95 V PB Falling Threshold PB falling, discharge mode 0.75 V PB internal pull up resistance Pull up to internal supply 1.2 MΩ Fault Condition Alarm Frequency 0.5s on and 0.5s off 1.0 Hz Fault Condition Alarm Timer 10 s (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 2, Feb-04-2016 Innovative PowerTM - 8 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LED Indication LED1-4 Indication Level Setting 5.5 8.8 V LED Sink Current 3 mA LED1-4 Scan Interval For each LED pattern before lighting LEDs 0.5 s (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 2, Feb-04-2016 Innovative PowerTM - 9 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 (VIN = 5V, TA = 25°C, unless otherwise specified.) Notes: 1. Comply to I2C timings for 1MHIZ operation - “Fast Mode Plus” 2. No internal timeout for I2C operations 3. This is a I2C system specification only. Rise and Fall time of SCL & SDA not controlled by the device. 4. Device Address is 7’h5A - Read Address is 8’hB4 and write is 8’hB5 SDA SCL tST tSUtHD tSP tSCL Start condition Stop condition PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SCL, SDA Input Low VCC= 5V 0.4 V SCL, SDA Input High VCC= 5V 1.25 V SDA Leakage Current SDA=5V 1 µA SDA Output Low IOL = 5mA 0.35 V SCL Clock Frequency, fSCL 0 1000 kHz SCL Low Period, tLOW 0.5 µs SCL High Period, tHIGH 0.26 µs SDA Data Setup Time, tSU 50 ns SDA Data Hold Time, tHD See Note: 1 0 ns Start Setup Time, tST For Start Condition 260 ns Stop Setup Time, tSP For Stop Condition 260 ns Capacitance on SCL or SDA Pin 10 pF SDA Fall Time SDA, Tof Device requirement 120 ns Rise Time of both SDA and SCL, tr See Note: 3 120 ns Fall Time of both SDA and SCL, tf See Note: 3 120 ns Pulse Width of spikes must be sup- pressed on SCL and SDA 0 50 ns

Copyright © 2016 Active-Semi, Inc. battery or buck to discharge battery. discharge mode, and high-impedance (HZ) mode. the IC draws less than 10uA current from VBAT. and VOUT2 current limit is set at 2.65A. charge management is shown in Figure 1. point the ACT2804 charges in top off state. when charging current is less than IEOC. monitoring the battery voltage. both battery voltage levels drops 5% below VEOC. at the programmed regulation voltage. in HZ mode, the LED (s) will turn on for 5 seconds. In the mean time, discharge mode is enabled. Figure 1. Typical Li+ Charge Profile and ACT2804 Charge States

Rev 2, Feb-04-2016 Innovative PowerTM - 12 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 APPLICATIONS INFORMATION HYST pin is regulated at 1V. Its input current will determine hysteresis adjustment equally to all level. Connect HYST to APGN via a resistor to set hysteresis window. Beside the hysteresis window, to avoid comparison oscillation, fixed 100mV of hysteresis is added to each LEVEL comparator. Hysteresis window is given by below equation: Then RHYST Example is given by the below table: Battery Impedance Compensation To avoid the number of LEDs changes between charge and discharge modes. Internal impedance compensation circuit is built in. An external resistor is used to set the impedance from 100m Ω to 800mΩ. RIMC is corresponding to battery impedance. The LED1 -4 thresholds shifted up and down based on the product of charge/discharge current and set impedance. RIMC value is given by below equation. In case not using compensation, float RIMC then there is no compensation affects to trig-points. RIMC example is given by the below table: BATTERY TEMPERATURE MONITERING The ACT2804 monitors the battery pack temperature by measuring TH voltage at the TH pin as shows in Figure 4. The TH pin is connected to the thermistor resistor net which includes a negative -temperature coefficient thermistor. An internal current source provides a bias current to generate TH voltage. The ACT2804 compares the voltage at the TH pin with the internal V THH and V THL thresholds to determine if charging or discharging is allowed. When V TH<VTHL or V TH >VTHH, it will be triggered latch off fault, there is 3 ways to wake up ACT2804 when VTH returns to the normal range. 1. Push PB when latch off bit is not set 2. I2C to clear faults in standby 3. Plug Vin to power up Figure 4: Thermistor setting RNTCc : NTC Resistor at cold temperature (Tcold) RNTCh : NTC Resistor at hot temperature (Thot) From (7) (8) (9) and (10) calculate Ra and Rb in charge mode, as the same method, the resistors in discharge mode can be calculated. For example, use NXRT15XH103 NTC resistor, the temperature in charge mode is 0 ℃ to 45 ℃,we know R NTCC=27.219k and 4.917k at 0 ℃ to 45 ℃, respectively. We can calculate Ra=33k Ω and Rb=2.87kΩ based on the above formulas. As the same method we can calculate the value when the temperature is -20℃ to 60℃. LED Indication ACT2804 is designed 5 levels of PT pin voltage into 5 application patterns. A resistor is connected from PT pin to ground and the voltage at PT pin programs the LED indication patterns. RHYST (kΩ) LED1 VHYST LED2 VHYST LED3 VHYST LED4 VHYST Floating 0mV 0mV 0mV 0mV 270 120mV 120mV 100mV 100mV 135 240mV 240mV 200mV 200mV 90 360mV 360mV 300mV 300mV 67.5 480mV 480mV 400mV 400mV 54 600mV 600mV 500mV 500mV 45 720mV 720mV 600mV 600mV RBAT (mΩ) 100 200 300 400 500 600 700 RCS = 25 mΩ 540k 270k 180k 135k 108k 90k 77k RCS = 50 mΩ 1280k 540k 360k 270k 216k 180k 154k – TH VTCL=1V NTC VTCH=2.5V VTDL=0.57V VTDH=2.5V IDIS=100uA ICHG=140uAACT2804 CHG_HOT CHG_COLD DIS_HOT DIS_COLD Rb Ra Li+ Battery Pack  5*6.01:2*5.03:4 HYSTVHYSTV HYSTHYST  54KVHYST )6()( )(2160)(  mRkkR BAT CS IMC )7(hotRcIV CHGTCL  )9( NTCh NTCh RRa RRaRbhotRc   )10( NTCc NTCc RRa RRaRbcoldR   )8(coldRIV CHGTCH 

Rev 2, Feb-04-2016 Innovative PowerTM - 13 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 APPLICATIONS INFORMATION Figure 5: LED Indication In discharge mode, when battery voltage goes below LED1 threshold, LED1 starts flashing until Buck (discharge mode) turns off due to either light load or Buck UVLO. The flash frequencies for all the LEDs are 0.5Hz with 1s on and 1s off. In HZ mode, when PB is pressed for 40ms, Buck turns on. If VBAT<LED1, LED1 starts flashing until Buck turns off. Conventional indication patterns could behave to have two application. Setting R PT=4kΩ to have “Always On ”, setting R PT=12kΩ to have “5s Indication”. The behaviors for both setting are same in charge mode. See below table for more information. Below shows 4 LED indication patterns. LED1-4 Refreshing Cycle Every time when VIN is plugged in or a PB is pushed, LED1, 2, 3, 4 turns on sequentially at 0.5s interval, like a LED scanning, and then goes into corresponding mode defined by PT pin. LED1-4 Fault Alarm Signal At fault conditions, actions are taken. In the meantime, all the 4 LEDs turn on/off with 0.5s on and 0.5s off for 10 seconds to send alarm signal out. The fault conditions include battery OVP, UVP, OTP. PCB Board Layout Guidance When laying out the printed circuit board, the following checklist should be used to ensure proper operation of the IC. 1. Arrange the power components to reduce the AC loop area. 2. Place the decoupling ceramic capacitor as close to BAT pin as possible. Use different capacitance combination to get better EMI performance. 3. Place the decoupling ceramic capacitors close to VIN pin, VOUT pin, and BAT pin. 4. Use copper plane for power GND for best heat dissipation and noise immunity. 5. Use Kevin sense from sense resistors to CSP and CSN1, CSN2 pins, and the sense resistor from BATS and BATP pins. 6. SW pad is a noisy node switching. It should be isolated away from the rest of circuit for good EMI and low noise operation. 7. Thermal pad is connected to GND layer through vias. PGND and AGND should be single -point connected. 8. RC snubber and external Schottky diode across SW to PGND can be added as needed for reducing SW spike and better EMI performance. # INDICATION PATTERN RPT 1a Conventional Always On In Discharge 4kΩ 1b Conventional 5s Indication in Discharge 12kΩ

2 Breathing

5s Indication in Discharge 24kΩ

3 Bottom Charging

5s Indication in Discharge 40kΩ

4 Circulating

5s Indication in Discharge 56kΩ Conventional Breathing Bottom Charging Circulating Flash Always onCirculating on Breathing on/off <25% EOC Off 75% SOC<100% 25% SOC<50% 50% SOC<75% VREG PB LED1LED2LED3LED4 ACT2804 GND BAT BATS BATP BATC CBD BATN PTLEDS1LEDS2LEDS3LEDS4 RPTRS1RS2RS3RS4

Rev 2, Feb-04-2016 Innovative PowerTM - 15 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 Table 5: BOM List ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 C1 Ceramic capacitor, 4.7uF/10V, X7R, 0805 1 Murata/TDK

2 C2,C3,C4,C5,C8, C9,C11 Ceramic capacitor, 22uF/16V, X7R, 1206 7 Murata/TDK

3 C6,C10 Ceramic capacitor, 0.1uF/16V, X7R, 0603 2 Murata/TDK

4 C7 Ceramic capacitor, 47nF/10V, X7R, 0603 1 Murata/TDK

5 C12 Ceramic capacitor, 2.2nF/16V, X7R, 0603 1 Murata/TDK

6 C13 Ceramic capacitor, 1uF/10V, X7R, 0603 1 Murata/TDK

7 C14 Ceramic capacitor, 100nF/16V, X7R, 0603 1 Murata/TDK

C15 Ceramic capacitor, 2.2uF/10V, X7R, 0603 1 Murata/TDK 9 C16,C17 Ceramic capacitor, 3.3uF/10V, X7R, 0603 2 Murata/TDK

10 D1 MBR1020VL, 20V, 1A Schottky, optional 1 Panjit

11 L1 Core SWPA8040S4R7NT 4.7uH 5.9A 1 Sunlord

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

13 R1 Chip Resistor, 2.7Ω, 1/8W, 1%, 0805 1 Murata/TDK

14 R2,R2A,R3,R3A,R4,R4A Chip Resistor, 50mΩ, 1/2W, 1%, 1206 6 SART

15 R5 Chip Resistor, 8kΩ, 1/10W, 1%, 0603 1 Murata/TDK

16 R6 Chip Resistor, 83kΩ, 1/10W, 1%, 0603 1 Murata/TDK

17 R7 Chip Resistor, 63.5kΩ, 1/10W, 1%, 0603 1 Murata/TDK 18 R8 Chip Resistor, 51.4kΩ, 1/10W, 1%, 0603 1 Murata/TDK 19 R9 Chip Resistor, 41.5kΩ, 1/10W, 1%, 0603 1 Murata/TDK

20 R10 Chip Resistor, 12kΩ, 1/10W, 5%, 0603 1 Murata/TDK

21 R11,R12 Chip Resistor, 540kΩ, 1/10W, 1%, 0603 2 Murata/TDK

22 R13 Chip Resistor, 0.47Ω, 1/8W, 5%, 0805 1 Murata/TDK

23 R14,R16 Chip Resistor, 510Ω, 1/10W, 1%, 0603 2 Murata/TDK

24 R15 Chip Resistor, 47Ω, 1/4W, 5%, 1206 1 Murata/TDK

25 R17 Chip Resistor, 3k, 1/10W, 1%, 0603 1 Murata/TDK

26 R18 Chip Resistor, 32k, 1/10W, 1%, 0603 1 Murata/TDK

27 R19 Chip Resistor, 10Ω, 1/10W, 1%, 0603 1 Murata/TDK

28 R20 Chip Resistor, 200Ω, 1/10W, 5%, 0603, optional 1 Murata/TDK

29 R21 Chip Resistor, 100Ω, 1/10W, 5%, 0603 1 Murata/TDK

30 R22, R23 Chip Resistor, 715kΩ, 1/10W, 5%, 0603 2 Murata/TDK

31 RNTC 103AT NTC Thermistor, NXRT15XH103V 1 Murata

32 Q1 8205A, Rdson < 25mΩ at VGS = 4.5 V, optional 1 TY

33 PB Push Button Switch 1 Nikkai Omron

34 USB 10.2*14.6*7mm, 4P 2

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

36 U1 IC, ACT2804, QFN 55-40 1 Active-Semi

Rev 2, Feb-04-2016 Innovative PowerTM - 16 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 6, Ta = 25°C, unless otherwise specified) ACT2804-001 Input Current (mA) 3500 3000 2500 2000 1500 1000 500 Test Point 0 5 10 15 20 25 30 ACT2804-002 Charge Current (mA) 1200 1000 800 600 400 200 Vbat (V) ACT2804-003 Charge Efficiency Efficiency(%) 96.0 95.0 94.0 93.0 92.0 91.0 90.0 Vbat (V) ACT2804-005 Battery Charge Current vs. Junction Temperature Battery Charge Current (mA) 1400 1200 1000 800 600 400 200 Temperature (°C) -20 0 20 40 60 80 100 120 140 ACT2804-004 Discharge Efficiency Efficiency(%) 100.0 95.0 90.0 85.0 80.0 75.0 Output Current (mA) 0 500 1000 1500 2000 2500 3000 3500 4000 Charge Current ACT2804-006 Battery Leakage (µA) 25.0 20.0 15.0 10.0 5.0 Temperature (°C) -20 0 20 40 60 80 100 120 Battery Leakage vs. Junction Temperature (HZ Mode) VBAT = 8.2V VBAT = 7.0V VIN = 5.0V VIN = 5.0V ICHRG = 1.0A VIN = 5.0V ICHRG = 1A VIN = 5.0V VBAT = 7.5V Battery Charge V/I Profile Charge Current vs. Output Current VBAT = 7.5V VBAT = 8.4V VBAT = 6.0V Input Current Output Current

Rev 2, Feb-04-2016 Innovative PowerTM - 17 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 6, Ta = 25°C, unless otherwise specified) ACT2804-008 Buck Output1 Constant Current Limit vs. Temperature Buck Output2 Constant Current (mA) 2750 2700 2650 2600 2550 2500 2450 Temperature (°C) -30 0 30 60 90 120 150 VBAT = 8.4V CV= 4.0V Rcs=25mΩ(1%) ACT2804-007 Buck Output2 Constant Current Limit vs. Temperature Buck Output1 Constant Current (mA) 1300 1250 1200 1150 1100 1050 1000 VBAT = 8.4V CV= 4.0V Rcs=25mΩ(1%) Buck Output2 Voltage vs. Output Current ACT2804-0010 buck Output2 Voltage (V) 5.25 5.20 5.15 5.10 5.05 5.00 4.95 Buck Output2 Current (mA) 0 500 1000 1500 2000 2500 3000 VBAT =8.4V VBAT=6.0V Buck Output1 Voltage vs. Output Current ACT2804-009 Buck Output1 Voltage (V) Buck Output1 Current (mA) 0 200 400 600 800 1000 1200 1400 VBAT =8.4V VBAT=6.0V Temperature (°C) -30 0 30 60 90 120 150 Buck Output1 Constant Current Limit vs. VBAT Buck Output1 Constant Current (mA) 1240 1230 1210 1200 1190 1180 ACT2804-012 Buck Output2 Constant Current Limit vs. VBAT Buck Output2 Constant Current (mA) 2720 2700 2680 2660 2640 2620 2600 Vbat (V) ACT2804-011 Vbat (V) 5.25 5.20 5.15 5.10 5.05 5.00 4.95

Rev 2, Feb-04-2016 Innovative PowerTM - 18 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 6, Ta = 25°C, unless otherwise specified) ACT2804-013 Buck Standby Current vs. Battery Voltage Standby Current (mA) 1.2 1.1 1.0 0.9 0.8 0.7 0.6 ACT2804-014 Battery Leakage (µA) 7.0 6.0 5.0 4.0 3.0 2.0 1.0 Battery Voltage(V) Battery Leakage vs. Battery Voltage (HZ Mode) Battery Voltage (V) ACT2804-016 Buck Output2 CC/CV Buck Output2 Voltage (V) 6.0 5.0 4.0 3.0 2.0 1.0 Output2 Current (mA) 0 500 1000 1500 2000 2500 3000 ACT2804-015 Buck Output1 CC/CV Buck Output1 Voltage (V) 6.0 5.0 4.0 3.0 2.0 1.0 Output1 Current (mA) 0 200 400 600 800 1000 1200 VBAT = 8.2V VBAT = 6.0V VBAT = 6.0V VBAT = 8.2V Buck Load Transient (Iout2: 80mA-1A-80mA, Iout1: 0A) CH1 CH2 VBAT = 8.2V VOUT = 5.0V Buck Load Transient (Iout2:1A-2.4A-1A, Iout1: 0A) ACT2804-018 CH1 CH2 ACT2804-017 CH1: VOUT, 200mV/div CH2: IOUT, 500mA/div TIME: 1ms/div VBAT = 8.2V VOUT = 5.0V CH1: VOUT, 200mV/div CH2: IOUT, 1A/div TIME: 1ms/div

Rev 2, Feb-04-2016 Innovative PowerTM - 19 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 TYPICAL PERFORMANCE CHARACTERISTICS CONT’D (Schematic as show in Figure 6, Ta = 25°C, unless otherwise specified) CH1 CH2 VBAT = 8.2V VOUT = 5.0V ACT2804-020 CH1 CH2 ACT2804-019 Buck Load Transient (Iout2: 80mA-1A-80mA, Iout1: 1A) Buck Load Transient (Iout2:1A-2.4A-1A, Iout1: 1A) VBAT = 8.2V VOUT = 5.0V CH1: VOUT, 200mV/div CH2: IOUT, 1A/div TIME: 1ms/div CH1: VOUT, 200mV/div CH2: IOUT, 500mA/div TIME: 1ms/div

Rev 2, Feb-04-2016 Innovative PowerTM - 20 - www.active-semi.com Copyright © 2016 Active-Semi, Inc. ACT2804 QFN55-40 PACKAGE OUTLINE AND DIMENSIONS Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each product to make sure that it is suitable for their applications. Active -Semi products are not intended or authorized for use as critical components in life -support devices or systems. Active -Semi, Inc. does not assume any liability arising out of the use of any product or circuit described in this datasheet, nor does it convey any patent license. Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact sales@active-semi.com or visit http://www.active-semi.com. is a registered trademark of Active-Semi. SYMBOL DIMENSION IN MILLIMETERS DIMENSION IN INCHES MIN MAX MIN MAX A 0.700 0.800 0.028 0.031 A1 0.000 0.050 0.000 0.002 A3 0.203 REF 0.008 REF b 0.150 0.250 0.006 0.010 D 4.924 5.076 0.194 0.200 E 4.924 5.076 0.194 0.200 D1 3.300 3.500 0.130 0.138 E1 3.300 3.500 0.130 0.138 e 0.400 TYP 0.016 TYP L 0.324 0.476 0.013 0.019 k 0.200 MIN 0.008 MIN PACKAGE OUTLINE D E PIN #1 DOT BY MARKING A3 A Top View D/2 E/2 b e L Bottom View k

Product Information

ACT2804QJ-T0435 specifications and overview.

Summary

5V/3.4A Dual Cell Backup Battery Power Manager Rev 2, Feb-04-2016

Description

5V/3.4A Dual Cell Backup Battery Power Manager Rev 2, Feb-04-2016

Source title ACT2804QJ-T0435 Datasheet(PDF) - Active-Semi, Inc

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