ME4057

V01

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Page 5 of 18

Electrical Characteristics

Symbol

Parameter

Condition

Min

Typ.

Max

Unit

VCC

Input supply voltage

●

4.0

5.0

8.0

V

ICC -IBAT

static current

●Charge mode, R

PROG=1.3K

-

150

500

μA

●Standby mode(charge end)

-

55

100

μA

●Shutdown mode（R

PROG not

connected,

VCC<VBAT,

or

VCC<VUV）

-

55

100

μA

VFLOAL

Regulated output voltage

0℃

≤T

A≤85℃ IBAT=40mA

4.158

4.2

4.242

V

IBAT

BAT pin current

(The condition of current mode is

VBAT=3.9V)

●R

PROG=2.6K, current mode

450

500

550

mA

●R

PROG=1.3K,current mode

950

1000

1050

mA

●Standby mode: V

BAT=4.2V

0

-2.5

-6

μA

Shutdown mode, RPROG not

connected

-

±1

±2

μA

Sleep mode, VCC=0V

-

-1

-2

μA

ITRIKL

Trickle charge current

●V

BAT<VTRIKL, RPROG=1.3K

120

130

140

mA

VTRIKL

Trickle charge threshold voltage

RPROG=1.3K, VBAT rising

2.8

2.9

3.0

V

VTRHYS

Trickle voltage hysteresis voltage

RPROG=1.3K

150

200

250

mV

VUV

VCC under voltage lockout threshold

● V

CC from low to high

3.5

3.7

3.9

V

VUVHYS

VCC under voltage lockout hysteresis

●

150

200

300

mV

VASD

VCC-VBAT lockout threshold voltage

VCC from low to high

100

140

180

mV

VCC from high to low

50

80

110

ITERM

C/10 termination current threshold

●R

PROG=2.6K

60

70

80

mA

●R

PROG=1.3K

120

130

140

VPROG

PROG pin voltage

●R

PROG=1.3K，current mode

0.9

1.0

1.1

V

VCHRG

Pin output low voltage

=5mA

-

0.3

0.6

V

VSTDBY

Pin output low voltage

=5mA

-

0.3

0.6

V

VTEMP-H

The voltage at TEMP increase

-

80

83

%VCC

VTEMP-L

The voltage at TEMP decrease

42

45

-

%VCC

ΔV

RECHRG

Recharge battery threshold voltage

VFLOAT -VRECHRG

120

180

240

mV

TLIM

Thermal protection temperature

-

145

-

℃

RON

The resistance of power FET

”ON”

（between V

CC and BAT）

-

650

-

mΩ

tSS

Soft-start time

IBAT=0 to IBAT=1300V/RPROG

-

20

-

μS

tRECHARGE

Recharge comparator filter time

VBAT from high to low

0.8

1.8

4

mS

tTERM

Termination comparator filter time

IBAT below ICHG/10

0.8

1.8

4

mS

IPROG

PROG pin pull-up current

-

2.0

-

μA

Note: The ● denotes specifications which apply over the full operating temperature rang, otherwise specifications are

at TA=25℃，VCC=5V，unless otherwise specified.