5L09N-Rev.F002

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ECB01913

QC 2.0 compliant Portable Power Bank Single Chip IC

Function and Characteristics

Charge Management Portion

（1）Fully charged Volt. set @ typical 4.22V

（2）Max. charging current can reach 1A; When under 1A required, thru Rch resistor on PROG Pin to GND While

Ich=1200/(Rch+1200)(A)

（4）0V Battery chargeable

（5）Three stage charge function: Tickling / Constant Current/ Constant Voltage

（6）Thermo Charging protection, charge current starts to decline from 120℃, and down to 0 when 150℃

Boost( Discharge Management Portion)

（1）Switching Freq. @ 650KHZ to drive external N- MOS and adjust output voltage and current

（2）After loading current < 50mA being sensed for 16 Seconds,ECB01913 would turn into Stand- by mode

（3）Automatic loading detect function，user could wake up system with button or EN Pin when design

（4）Constant Power design，OCP point lower down along with battery voltage. When output current surpasses OCP point,

output voltage declines to maintain stable output power until output voltage turns to be as low as battery voltage,

which system would judge as over current or short- circuit state to shut down

（5）Boost reference voltage@ 0.6V, with suitable dividing resistors to alter output voltage, equation is-

Vout=0.6×(1+R3/R4)，With OVP function，when output voltage surpasses Vovp= 0.68×(1+R3/R4), boost function

would be interrupted；Also, the peak boost voltage must under 9V

（6）3.2V Indicator LED1starts to flicker when Vbat < 3.2V;

A. When boost not being triggered and Vbat < 3.0V, button won't effect, and LED1 would flicker for 8 seconds.；

B. When boost not being triggered and Vbat > 3.0V, Boost function can be waken with button until Vbat falls under

2.8V, discharge output would be turned off, at this moment, LED1 still flickers for 8 seconds.

（7）Max. output current can be decided by R2, when Vbat is 3.6V, output current can be calculated by：

Iout =0 .04/R2， When Vbat is higher or lower than 3.6V, output current tolerance is < 15% In normal case of

application, user can set R2= 0.04 Ohm to gain 1A output current , and By setting R2= 0.02 Ohm to gain 2A output

current

（8）Boost/ Discharge allowed while internal battery being charged, and LEDs indication follows rules of charging state

shown below in

Charge/ Discharge Indicating LED Intro.

（1） Charge/ Discharge indicating LEDs Marquee is shown in below chart

（2） When discharging, if Vbat falls under2.8V, system would be shut down； when Vbat raises from low to high and

before reaching 3.0V, boost action would not be ignited by inserting any loads or clicking button, and LED1 would

flicker for 8 seconds to remind low battery voltage

（3）In sleeping mode, by clicking button to check status, LEDs would flicker for 8 seconds in accordance With actual

battery condition in the following methods

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