SS6621 datasheet(3/12 Pages) SSC

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SS6620/21/2

n ELECTRICAL CHARACTERISTICS (V

BATT=2.0V, VOUT=3.3V (FB=VOUT), RL=

∝,

TA=25

°C, unless otherwise specified.)

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

Minimum Input Voltage

0.7

Operating Voltage

1.1

4.0

Start-Up Voltage

RL=3K

Ω (Note1)

0.8

1.1

Start-Up Voltage Tempco

-2

mV/

°C

Output Voltage Range

1.8

4.0

Output Voltage

FB = VOUT

3.17

3.3

3.43

SS6620

SS6622

(CLSEL=OUT)

300

400

Steady State Output Current

(Note 2)

FB=OUT

(

VOUT =3.3V) SS6621

SS6622

(CLSEL=GND)

150

220

Reference Voltage

IREF= 0

1.199

1.23

1.261

Reference Voltage Tempco

0.024

mV/

°C

Reference Load Regulation

IREF = 0 to 100

µA

Reference Line Regulation

VOUT = 1.8V to 4V

mV/V

FB , LBI Input Threshold

1.199

1.23

1.261

Internal Switch On-Resistance

ILX = 100mA

0.3

Ω

SS6620,SS6622(CLSEL =

OUT)

0.6

0.8

1.0

LX Switch Current Limit

SS6621,SS6622(CLSEL =

GND)

0.3

0.45

0.6

LX Leakage Current

VLX=0V, 4V; VOUT=4V

0.05

µA

Operating Current into OUT

(Note 3)

VFB = 1.4V , VOUT = 3.3V

µA

Shutdown Current into OUT

SHDN = GND

0.1

µA

VOUT= 3.3V ,ILOAD = 200mA

Efficiency

VOUT = 2V ,ILOAD = 1mA

LX Switch On-Time

VFB =1V , VOUT = 3.3V

µs

LX Switch Off-Time

VFB =1V , VOUT = 3.3V

0.6

0.9

1.3

µs

FB Input Current

VFB = 1.4V

0.03

Rev.2.01 6/06/2003

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