SS6620 データシートの表示（PDF） - Silicon Standard Corp.

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SS6620

High Efficiency Synchronous Step-Up DC/DC Converter

Silicon Standard Corp. 

n ELECTRICAL CHARACTERISTICS (Continued)

SS6620/21/2

PARAMETER

LBI Input Current

CLSEL Input Current

SHDN Input Current

LBO Low Output Voltage

LBO Off Leakage Current

LBI Hystereisis

Damping Switch Resistance

TEST CONDITIONS

VLBI = 1.4V

SS6622 , CLSEL = OUT

V SHDN = 0 or VOUT

VLBI = 0, ISINK = 1mA

VLBO = 5.5V, VLBI = 5.5V

SS6622, VBATT = 2V

SHDN Input Voltage

CLSEL Input Voltage

MIN. TYP. MAX. UNIT

1

50

nA

1.4

3

µA

0.07

50

nA

0.2

0.4

µA

0.07

1

50

mV

50

100

Ω

0.8VOUT

0.2VOUT

V

0.8VOUT

0.2VOUT

V

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

100

90

80

70

VIN=2.4V

60

VIN=1.2V

50

40

30

20

10

0

0.01

0.1

1

10

100

1000

Loading (mA)

Fig. 1 VOUT=3.3V CLSEL=OUT (0.8A)

160

140

120

100

80

I_limit=0.8A , VOUT=3.3V

60

40

20

I_limit=0.45A , VOUT=3.3V

0 0.0

0.5

1.0

1.5

2.0

2.5

3.0

Input battery voltage (V)

Fig. 2 No-Load Battery Current vs. Input Battery Voltage

Rev.2.01 6/06/2003

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