SS6621 datasheet(4/12 Pages) SSC

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SS6620/21/2

n ELECTRICAL CHARACTERISTICS (Continued)

PARAMETER

TEST CONDITIONS

MIN.

TYP.

MAX.

UNIT

LBI Input Current

VLBI = 1.4V

CLSEL Input Current

SS6622 , CLSEL = OUT

1.4

µA

SHDN Input Current

V SHDN = 0 or VOUT

0.07

LBO Low Output Voltage

VLBI = 0, ISINK = 1mA

0.2

0.4

µA

LBO Off Leakage Current

VLBO = 5.5V, VLBI = 5.5V

0.07

LBI Hystereisis

Damping Switch Resistance

SS6622, VBATT = 2V

100

Ω

0.2VOUT

SHDN Input Voltage

0.8VOUT

0.2VOUT

CLSEL Input Voltage

0.8VOUT

Note 1: Start-up voltage operation is guaranteed without the addition of an external Schottky diode between the in-

put and output.

Note 2: Steady-state output current indicates that the device maintains output voltage regulation under load.

Note 3: Device is bootstrapped (power to the IC comes from OUT). This correlates directly with the actual battery

supply.

n TYPICAL PERFORMANCE CHARACTERISTICS

0.01

0.1

100

1000

100

Fig. 1

OUT=3.3V

CLSEL=OUT

(0.8A)

VIN=2.4V

VIN=1.2V

Loading (mA)

0.0

0.5

1.0

1.5

2.0

2.5

3.0

100

120

140

160

I_limit=0.45A , VOUT=3.3V

Input battery voltage (V)

Fig. 2

No-Load Battery Current vs. Input Battery Voltage

I_limit=0.8A , VOUT=3.3V

Rev.2.01 6/06/2003

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