EC3653

E-CMOS Corp. (www.ecmos.com.tw)

7I11N-Rev. F001

16V 3A 4-Switch Buck-Boost Charging/Discharging Converter

4/12

Electrical Characteristics

VBUS=12V, TA=25

, unless otherwise stated

Item

Symbol

Condition

Min.

Typ.

Max.

Units

Power supply

VBAT voltage range

VBAT

3.0

16

V

VCC output voltage

VCC

IVCC=2mA

4.85

4.9

4.95

V

VCC output current limit

IVCC

VCC>2.7V

40

50

60

mA

Supply current in shut-down mode

IQ

VBAT=8V, EN=0V

40

50

60

µA

Controller

Switch frequency

Fsw

450

500

550

kHz

Switch minimum off time

Toff_min

80

100

120

ns

DE/STAT, CE/OLIM Logic HIGH

VENH

VBAT=8V

2.0

V

DE/STAT, CE/OLIM Logic LOW

VENL

VBAT=8V

0.4

V

Bucktop switch on-resistance

RdsbkTG

20

28

m

Buck bottom switchon-resistance

RdsbkBG

20

28

m

Boost top switch on-resistance

RdsbstTG

20

28

m

Boost bottom switch on-resistance

RdsbstBG

20

28

m

Charge

Floating BAT Voltage

VCV

VBATFB =GND,

EC3653

8.358

8.4

8.442

V

VBATFB =GND,

EC3653-1

8.656

8.7

8.743

V

VBATFB = VCC,

EC3653

12.53

12.6

12.67

V

VBATFB = VCC,

EC3653-1

12.98

13.05

13.12

V

Set by divider

resistance

3.0

-

16

V

BAT feedback voltage

VBATFB

External resistor divider

1.188

1.2

1.212

V

BAT Recharge threshold

VREC

VBATFB = GND

7.95

8.0

8.05

V

VBATFB = VCC

11.25

12.0

12.12

V

BAT recharge feedback threshold

VRECFB

1.136

1.143

1.15

V

CC mode charge current

ICC

RCS=10m ,

RISET1=2K

RISET2=1.5K

1.8

2

2.2

A

Charge termination current

ITER

RCS=10m ,

RISET1=2K

RISET2=1.5K

200

mA

Battery full charge deglitch time

TFULL

ICC< ITER

25

s