EC49020

4D25N-Rev.P001

Page 4 of 11

High Efficiency 2A 1.5MHz

Single Cell Li-ion Battery Switching Charger

Electrical Characteristics

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNITS

INPUT VOLTAGE

Supply Operating Range

4.5

6.5

V

Under-voltage lockout threshold

3.3

V

300

mV

Over-Voltage Rising

6.55

6.75

6.95

V

100

mV

AUTOMATIC SLEEP COMPARATOR (REVERSE DISCHARGING PROTECTION)

SLEEP mode threshold

100

mV

Hysteresis

200

mV

QUIESCENT CURRENTS

Battery discharge current

Pull TS to GND

25

µA

Adapter supply current

1.2

2.0

mA

CHARGE VOLTAGE REGULATION

BAT regulation voltage

EC49020XS, measured on BAT

4.158

4.200

4.242

V

EC49020BS, measured on BAT

4.306

4.350

4.393

Recharge Threshold,

belowregulation voltage limit

1 cell, measured on BAT

100

mV

Trickle Charge to fast

charge transition threshold

measured on BAT

2.9

V

BAT Over-voltage Threshold

104%

CHARGE CURRENT REGULATION

Charge Current Limit

0.5

2

A

Fast charge current factor

100

A·k

Ω

Trickle Charge Current

10

Termination Current

10

THERMISTOR COMPARATOR

Cold Temperature Threshold,

TS pin Voltage Rising Threshold

Charger suspends charge.

70.5% 73.5% 76.5%

TS pin voltage Falling

0.4%

Hot Temperature TS pin voltage

rising Threshold

47%

Cut-off Temperature TS pin

Voltage falling Threshold

41.7% 44.7% 47.7%

Charging Disable Threshold

TS pin voltage falling edge

Hysteresis 0.15V

0.15

V

INTERNAL THERMAL REGULATION

Charging

125

°C