2

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Input Start-Up Voltage

●

2.4

2.5

V

Input Operating Range

●

2.5

5.5

V

Output Voltage Adjust Range

●

2.5

5.5

V

Feedback Voltage

●

1.196

1.22

1.244

V

Feedback Input Current

1

50

nA

Quiescent Current, Burst Mode Operation

40

50

µ A

Quiescent Current, Shutdown

SHDN = 0V, Not Including Switch Leakage

0.1

1

µ A

Quiescent Current, Active

2800

4000

µ A

NMOS Switch Leakage

Switches B and C

0.1

5

µ A

PMOS Switch Leakage

Switches A and D

0.1

10

µ A

NMOS Switch On Resistance

Switches B and C

0.19

PMOS Switch On Resistance

Switches A and D

0.22

Input Current Limit

●

1A

Maximum Duty Cycle

Boost (% Switch C On)

●

55

75

%

Buck (% Switch A On)

●

100

%

Minimum Duty Cycle

●

0%

Frequency Accuracy

●

0.8

1

1.2

MHz

MODE/SYNC Threshold

0.4

2

V

MODE/SYNC Input Current

0.01

1

µ A

Error Amp AVOL

90

dB

Error Amp Source Current

15

µ A

Error Amp Sink Current

380

µ A

(Note 1)

SW1, SW2 Voltage ..................................... – 0.3V to 6V

MODE/SYNC Voltage .................................. – 0.3V to 6V

ORDER PART

NUMBER

kB3440EDD

°C/ W

The

DD

PART MARKING

XXXX

1

2

3

4

5

MODE/SYNC

SW1

SW2

GND

10

9

8

7

6

FB

SHDN/SS

TOP VIEW

MS PACKAGE

10-LEAD PLASTIC MSOP

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Storage Temperature Range ................. – 65

°C to 125°C

Lead Temperature (Soldering, 10 sec).................. 300

°C

ORDER PART

NUMBER

kB3440EMS

MS

PART MARKING

HX-AA

TOP VIEW

DD PACKAGE

10-LEAD (3mm

× 3mm) PLASTIC DFN

EXPOSED PAD (PIN 11) IS GND

MUST BE SOLDERED TO PCB

10

9

6

7

8

4

5

3

2

1

FB

SHDN/SS

MODE/SYNC

SW1

SW2

GND

11

kB3440

Kingbor Technology Co.,Ltd

TEL:(86)0755-26508846 FAX:(86)0755-26509052

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PACAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS