ACT2801 | DigiCamel IC Datasheet

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FEATURES

Dedicated Single Chip Solution for Mobile Power With Minimal Component Count
5V/1.5A Constant Output Current Limit in Boost Mode
1.5A Switching Charger 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 2.0A Input Current Limit with Prioritized Power Path to Output
5V+/-100mV Output Voltage in Boost Mode
1.1MHz/0.55MHz Switching Frequencies
2.2uH SMD 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 ACT2801/ACT2801C is a space-saving and high- performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801/ACT2801C integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2801/ACT2801C operates at 1.1MHz for switching charger and 0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801/ACT2801C 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. ACT2801/ACT2801C 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. ACT2801/ACT2801C boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. ACT2801/ACT2801C 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/1.5A Backup Battery Pack Manager Rev 2, 15-Apr-14 ACT2801/ACT2801C Output Voltage (V) Output Current (mA) 0 200 400 600 800 1000 1400 1200 5.5 5.0 4.5 4.0 3.5 3.0 Boost CC/CV Curve VBAT =4.1V VBAT =3.7V VBAT =3.2V

ORDERING INFORMATION

ACT2801QL-T0550 5V/1.5A 1.5A No Yes QFN44-24 ACT2801QL-T1026 5V/1.5A 1.5A Yes No QFN44-24 ACT2801CQL-T 5V/1.5A 1.5A Yes No QFN44-24 FLASHLIGHT No No Yes PIN CONFIGURATION

Rev 2, 15-Apr-14 Innovative PowerTM - 3 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C 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. When this pin is pushed for 100ms, LED1-4 indicators are enable for 5 seconds. For ACT2801C, if this pin is pushed for 3s, Flashlight is enabled. 3 AGND Logic Ground. 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 0.5A-2.0A. 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.

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 0.5A-1.5A. 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 0.5A-1.5A. 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: ACT2801 Temperature sensing input. Connect to battery thermistor terminal. If no use, put 10K pulled down resistor. FLD: ACT2801C 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 2, 15-Apr-14 Innovative PowerTM - 4 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C ABSOLUTE MAXIMUM RATINGSc 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 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 2, 15-Apr-14 Innovative PowerTM - 5 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Input Current Limit Input Voltage Range 4.5 5.5 V VIN Over Voltage Protection VIN rising, V IN_OVP 5.5 6.0 6.5 V Input Voltage Validation Time VI N_UVLO<VIN<VIN_OVP 32 ms Input Current Limit Setting Range R ILIM=1.2kΩ—4.8k Ω 0.5 2.0 A Input Current Setting RILIM=1.5kΩ 1.6 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 90 m Ω VOUT-to-SW FET on Resistance 70 m Ω SW-to-PGND FET on Resistance 75 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=50m Ω, RICST=20kΩ—60.4k Ω 0.5 1.5 A Charge Current Setting (ICHRG) Rcs=50mΩ, RICST=39kΩ -10% 975 +10% mA 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 Fast Charge Current VBAT=3.5V I CHRG A Precondition Charge Current 2.5V ≤VBAT≤2.8V, Percent of ICHRG 10 %

ELECTRICAL CHARACTERISTICS

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

Rev 2, 15-Apr-14 Innovative PowerTM - 6 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Precondition Voltage Threshold VBAT rising, Rbtv=0 2.8 V Precondition Voltage Threshold Hysteresis 130 mV Low VBAT Charge Current VBAT=1V, R ICST=39kΩ 200 mA EOC Current Threshold Percent of the fast charge current 13 % Charge Restart Voltage Threshold 200 mV TH Upper Temperature Voltage Threshold Cold detect NTC thermistor ACT2801-T0550/ACT2801-T1026 1.5 V TH Lower Temperature Voltage Threshold Hot detect NTC thermistor ACT2801-T0550/ACT2801-T1026 0.3 V TH Hysteresis ACT2801-T0550/ACT2801-T1026 50 mV TH Internal Pull-up Current ACT2801-T0550/ACT2801-T1026 60 µA 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=50mΩ, RICST=39kΩ 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 Vbat=3.7V, 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 Output Current Regulation Range Rcs=50mΩ, RIOST=37.5kΩ—113kΩ 0.5 1.5 A Output Current Setting Rcs=50mΩ, RIOST=97.6kΩ 1.3 A The Maximum Voltage Across VRcs All conditions 200 mV Minimum On-Time 100 ns Low Side Switch Peak Current Limit VBAT=3.2V, VOUT=5V 4.0 5.6 A (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 2, 15-Apr-14 Innovative PowerTM - 7 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT 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=50mΩ, RIOST=97.6kΩ 40 100 mA Light Load Current Detect Time ACT2801C/ACT2801-T1026 45 s Light Load Current Detect Time ACT2801-T0550 90 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 ACT2801C/ACT2801-T1026 1.5 s PB Turn off Boost Time ACT2801-T0550 3.0 s PB Turn on Boost Time 100 ms 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=50mΩ, RIMC=100kΩ 200 m Ω PB Deglitch Time 100 ms PB High Input Voltage PB voltage rising 0.9 1.4 V PB Low Input Voltage PB voltage falling 0.4 0.75 V PB Internal Pull-up Resistor 3 M Ω LED Indication Time PB is pushed and released 5 s LED Flash Frequency Charging, LED flash 1s on and 1s off 0.5 Hz Flashlight Driver Flashlight Driver Current ACT2801C, the current at Flash Pin 50 mA PB Turn on Flashlight Time ACT2801C 3.0 s PB Turn off Flashlight Time ACT2801C 3.0 s (VIN = 5V, TA = 25°C, unless otherwise specified.)

Rev 2, 15-Apr-14 Innovative PowerTM - 9 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C FUNCTIONAL DESCRIPTION ACT2801/ACT2801C 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 ACT2801/ACT2801C 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 ACT2801/ACT2801C 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. ACT2801 system operation flow chart as shown in Figure 1, and ACT2801C 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 ACT2801/ACT2801C into charge mode. Boost mode is enabled if HZ pin is pulled low and VIN is invalid or not present. When HZ=0, if PB is pulled low for more than 100ms, boost converter is enabled. Flashlight ACT2801C 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. If another 3 seconds event happen, the flashlight will be switched off. Figure 1: ACT2801 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 2, 15-Apr-14 Innovative PowerTM - 10 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C Figure 2: ACT2801C System Operation Flow Chart FUNCTIONAL DESCRIPTION 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 ACT2801/ACT2801C 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 ACT2801/ ACT2801C, 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 ACT2801/ ACT2801C 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 ACT2801/ACT2801C 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 13% of fast charge current. When this happens, the state machine terminates the charge cycle and jumps to the EOC state. End of Charge When charges current decreases to 13% of set fast charge current, the buck converter goes into end of charge mode and keep monitoring the battery voltage.

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

Rev 2, 15-Apr-14 Innovative PowerTM - 17 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 L1 SWPA4020S1R0NT 2.2uH 3.4A (4*4*2mm) 1 Sunlord 2 Q1 SI2333DDS, Rdson=28m Ω at VGS = - 4.5 V 1 Vishay 4 D2 1N4148, Vf=0.7V, 75V Schottky 1 Vishay

5 C2,C5 Ceramic Capacitor, 22uF/10V, X7R, 1206 2 Murata/TDK

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

8 C6 Ceramic Capacitor, 10nF/10V, X7R, 0402 1 Murata/TDK

9 C7 Ceramic Capacitor, 1nF/10V, X7R, 0603 1 Murata/TDK

10 C8 Ceramic Capacitor, 1uF/10V, X7R, 0603 1 Murata/TDK

11 C11,C12,C13 Ceramic Capacitor, 2.2uF/10V, X7R, 0603 3 Murata/TDK 12 R1 Chip Resistor, 1.2k Ω, 1/16W, 1%, 0402 1 Murata/TDK

13 R2 Chip Resistor, 50m Ω, 1/4W, 1%, 1206 1 Murata/TDK

14 R3 Chip Resistor, 97.6k Ω, 1/16W, 1%, 0402 1 Murata/TDK 15 R4 Chip Resistor, 60.4k Ω, 1/16W, 1%, 0402 1 Murata/TDK

16 R5 Chip Resistor, 25k Ω, 1/16W, 1%, 0402 1 Murata/TDK

17 R6 Chip Resistor, 10k Ω, 1/16W, 1%, 0402 1 Murata/TDK

18 R7 Chip Resistor, 60k Ω, 1/16W, 1%, 0402 1 Murata/TDK

19 R8 Chip Resistor, 100k Ω, 1/16W, 1%, 0402 1 Murata/TDK

20 R9 Chip Resistor, 1 Ω, 1/8W, 5%, 0805 1 Murata/TDK

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

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

24 R14 Chip Resistor, 100k Ω, 1/10W, 5%, 0603 1 Murata/TDK

25 R15 Chip Resistor, 2.2 Ω, 1/10W, 5%, 0603 1 Murata/TDK

26 LED1,LED2,

LED3,LED4 LED, 0603, Blue 4 LED Manu

27 PB Push Button Switch 1 Nikkai Omron

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

29 Micro-USB MICRO USB 5P/F SMT B 1

30 U1 IC, ACT2801, T-QFN 44-24 1 ACT

3 D1 SS12, Vf=0.5V, 20V Schottky 1 Panjit 21 R10 Chip Resistor, 2.7 Ω, 1/4W, 5%, 1206 1 Murata/TDK Table 5: BOM List

Rev 2, 15-Apr-14 Innovative PowerTM - 19 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C ITEM REFERENCE DESCRIPTION QTY MANUFACTURER 1 L1 SWPA4020S1R0NT 2.2uH 3.4A (4*4*2mm) 1 Sunlord 2 Q1 SI2333DDS, Rdson=28m Ω at VGS = - 4.5 V 1 Vishay 4 D2 1N4148, Vf=0.7V, 75V Schottky 1 Vishay 6 C3 Ceramic Capacitor, 4.7uF/10V, X7R, 1206 1 Murata/TDK 7 C4 Ceramic Capacitor, 0.1uF/10V, X7R, 0603 1 Murata/TDK 11 C11,C12,C13 Ceramic Capacitor, 2.2uF/10V, X7R, 0603 3 Murata/TDK 12 R1 Chip Resistor, 1.2k Ω, 1/16W, 1%, 0402 1 Murata/TDK 14 R3 Chip Resistor, 97.6k Ω, 1/16W, 1%, 0402 1 Murata/TDK 15 R4 Chip Resistor, 60.4k Ω, 1/16W, 1%, 0402 1 Murata/TDK

17 R6 Chip Resistor, 51 Ω, 1/16W, 1%, 0402 1 Murata/TDK

25 R15 Chip Resistor, 2.2 Ω, 1/10W, 5%, 0603 1 Murata/TDK LED3,LED4 LED, 0603, Blue 4 LED Manu

28 PB Push Button Switch 1 Nikkai Omron

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

30 Micro-USB MICRO USB 5P/F SMT B 1

31 U1 IC, ACT2801C, T-QFN 44-24 1 ACT

3 D1 SS12, Vf=0.5V, 20V Schottky 1 Panjit 21 R10 Chip Resistor, 2.7 Ω, 1/4W, 5%, 1206 1 Murata/TDK

27 LED FLASHLIGHT, WHITE 1 LED Manu

Table 6: BOM List

Rev 2, 15-Apr-14 Innovative PowerTM - 20 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D ACT2801-001 Charge Current VS. Output Current Input Current (mA) 1800 1500 1200 900 600 300 2100 Output Current(mA) 0 300 600 900 1200 1500 1800 ACT2801-002 Battery Charge V/I Profile Charge Current (mA) 1800 1500 1200 900 600 300 Vbat (V) 4.0 4.5 ACT2801-003 Charge Efficiency Efficiency(%) 92.0 91.5 91.0 90.5 90.0 89.5 89.0 Vbat (V) ACT2801-005 Battery Charge Current VS. Temperature Battery Charge Current (mA) 1800 1200 900 600 300 1500 Temperature (°C) -20 0 20 100 120 140 ACT2801-004 Boost Efficiency Efficiency(%) 100.0 90.0 80.0 70.0 60.0 50.0 40.0 Output Current (mA) 0 200 400 600 800 1000 1200 1400 VIN = 5.0V VBAT = 3.5V VIN = 5.0V ICHRG = 1.5A VIN = 5.0V ICHRG = 1.5A VIN = 5.0V VBAT = 3.5V (Schematic as show in Figure 20, Ta = 25°C, unless otherwise specified) ACT2801-006 IBAT (mA) 25.0 20.0 15.0 10.0 5.0 Battery Leakage VS. Temperature (HZ Mode) Temperature (°C) -20 0 20 100 120 Input Current Charge Current VBAT = 3.2V VBAT = 3.7V VBAT = 4.1V VBAT = 4.1V VBAT = 3.5V

Rev 2, 15-Apr-14 Innovative PowerTM - 21 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D ACT2801-007 ACT2801-009 Boost Output Voltage (V) 5.15 5.10 5.05 5.00 4.95 4.90 Boost Output Current (mA) 0 200 400 600 800 1000 1200 1400 Boost Output Voltage VS. Output Current ACT2801-008 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) 1400 1350 1300 1250 1200 1150 Temperature (°C) -30 0 30 120 150 VBAT = 3.2V VBAT = 4.1V VBAT = 3.5V CV = 4.5V Rcs=50mΩ(1%) VBAT = 3.5V VOUT = 5.05V (Schematic as show in Figure 20, Ta = 25°C, unless otherwise specified) ACT2801-011 Boost Standby Current VS. Battery Voltage Standby Current (mA) 051 0.50 0.49 0.48 0.47 0.46 0.45 Battery Voltage(V) ACT2801-012 Battery Leakage VS. Battery Voltage (HZ Mode) Battery Leakage (µA) 8.0 5.0 4.0 3.0 2.0 1.0 7.0 6.0 Battery Voltage(V) ACT2801-010 Boost Output Constant Current Limit VS. VBAT Boost Output Constant Current mA) 1330 1320 1315 1310 1305 1300 1325 Vbat (V) 3.0 3.2 3.4 3.6 3.8 4.0 4.2

Rev 2, 15-Apr-14 Innovative PowerTM - 22 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C TYPICAL PERFORMANCE CHARACTERISTICS CONT’D CH1 CH2 Transition Between Buck Mode and Boost Mode ACT2801-017 (Schematic as show in Figure 20, 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 = 1.3A Boost Load Transient (80mA-1A-80mA) ACT2801-014 CH1 CH2 VBAT = 4.1V VOUT = 5.0V IIOST = 1.3A ACT2801-013 CH1: VOUT, 200mV/div CH2: IOUT, 500mA/div TIME: 1ms/div CH1: VOUT, 200mV/div CH2: IOUT, 500mA/div TIME: 1ms/div ACT2801-016 VBAT = 4.1V VOUT = 5.0V IOUT = 1.0A CH1 CH2 SW and Output Waveforms in Boost Mode ACT2801-015 VBAT = 3.4V VOUT = 5.0V IOUT = 1.0A CH1 CH2 CH1: VOUT, 10mV/div CH2: VSW, 2V/div TIME: 400ns/div CH1: VOUT, 10mV/div CH2: VSW, 2V/div TIME: 400ns/div VIN VnPG Vout SW and Output Waveforms in Boost Mode VIN = 5.0V VBAT = 4.1V

Rev 2, 15-Apr-14 Innovative PowerTM - 23 - www.active-semi.com Copyright © 2014 Active-Semi, Inc. ACT2801/ACT2801C PACKAGE OUTLINE QFN44-24 PACKAGE OUTLINE AND DIMENSIONS Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. User s should evaluate each product to make sure that it is suitable for their applicat ions. Active-Semi products are not intended or authorized for use as critical components in life-support dev ices 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 0.200 REF 0.008 REF b 0.180 0.300 0.007 0.012 D 3.850 0.152 E 3.850 0.152 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 4.150 4.150 0.163 0.163

Product Information

ACT2801 specifications and overview.

Summary

5V/1.5A Backup Battery Pack Manager Rev 2, 15-Apr-14

Description

5V/1.5A Backup Battery Pack Manager Rev 2, 15-Apr-14

Source title ACT2801 Datasheet(PDF) - Active-Semi, Inc

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