KB3408 datasheet(2/6 Pages) KINGBOR

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KB3408

Kingbor Technology Co.,Ltd

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

March 2007

KB3408

KB3408-ADJ

TJMAX = 125°C, JA = 250°C/ W, JC = 90°C/ W

ORDER PART

NUMBER

Input Supply Voltage .................................. – 0.3V to 7.5V

RUN, VFB Voltages ..................................... – 0.3V to VIN

SW Voltage .................................. – 0.3V to (VIN + 0.3V)

P-Channel Switch Source Current (DC) ............. 400mA

N-Channel Switch Sink Current (DC) ................. 400mA

RUN 1

GND 2

SW 3

5 VFB

4 VIN

TOP VIEW

S5 PACKAGE

5-LEAD PLASTIC TSOT-23

(Note 1)

Peak SW Sink and Source Current .................... 350mA

Operating Temperature Range (Note 2) .. – 40

°C to 85°C

Junction Temperature (Note 3) ............................ 125

°C

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

°C to 150°C

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

°C

KB3408B-1.8

ORDER PART

NUMBER

TJMAX = 125°C, JA = 250°C/ W, JC = 90°C/ W

RUN 1

GND 2

SW 3

5 VOUT

4 VIN

TOP VIEW

S5 PACKAGE

5-LEAD PLASTIC TSOT-23

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

IVFB

Feedback Current

●

±30

VFB

Regulated Feedback Voltage

KB3408 (Note 4) T A = 25°C

0.5880

0.6

0.6120

KB3408 (Note 4) 0

°C TA 85°C

0.5865

0.6

0.6135

KB3408 (Note 4) –40

°C TA 85°C

●

0.5850

0.6

0.6150

VFB

Reference Voltage Line Regulation

VIN = 2.5V to 7.4V (Note 4)

●

0.4

%/V

VOUT

Regulated Output Voltage

KB3408-1.8, I OUT = 100mA

●

1.755

1.800

1.845

KB3408-3.3, I OUT = 100mA

●

3.246

3.300

3.354

VOUT

Output Voltage Line Regulation

VIN = 2.5V to 7.4V

●

0.4

%/V

IPK

Peak Inductor Current

VIN = 3V, VFB = 0.5V or VOUT = 90%,

0.40

0.45

0.5

Duty Cycle < 35%

VLOADREG

Output Voltage Load Regulation

0.5

VIN

Input Voltage Range

●

2.5

7.4

Input DC Bias Current

(Note 5)

Active Mode

VFB = 0.5V or VOUT = 90%, ILOAD = 0A

250

400

µA

Sleep Mode

VFB = 0.62V or VOUT = 103%, ILOAD = 0A

µA

Shutdown

VRUN = 0V, VIN = 4.2V

0.1

µA

fOSC

Oscillator Frequency

VFB = 0.6V or VOUT = 100%

●

1.2

1.5

1.8

MHz

VFB = 0V or VOUT = 0V

210

kHz

RPFET

RDS(ON) of P-Channel FET

ISW = 100mA

0.4

0.5

RNFET

RDS(ON) of N-Channel FET

ISW = –100mA

0.35

0.45

ILSW

SW Leakage

VRUN = 0V, VSW = 0V or 5V, VIN = 5V

±0.01

±1

µA

The

● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

VIN = 3.6V unless otherwise specified.

ABSOLUTE MAXIMUM RATINGS

PACkAGE/ORDER INFORMATION

ELECTRICAL CHARACTERISTICS

Top Marking

A19x

xxxx

KB3408B-3.3

Top Marking

xxxx

x: DateCode

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