SOT-89 Step-Up PFM Switcher with Auto-Load Sense

Impala Linear Corporation

3

(408) 574-3939

www.impalalinear.com

Feb 2001

ILC6390 1.1

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Output Voltage

Test Circuit of Figure 4

4.875

5.000

5.125

V

Input Voltage

10

V

Operation Startup Voltage

0.80

0.9

V

Operation Hold Voltage

0.70

V

31.7

63.4

µA

Supply Current 2

2.4

4.8

µA

EXT “High” On-Resistance

50

75

Ω

EXT “Low” On-Resistance

50

75

Ω

Duty Ratio 1

DUTY 1

EXT waveform

70

75

80

%

Duty Ratio 2

DUTY 2

Measuring of EXT High State

50

55

60

%

Maximum Oscillation Freq. 1

MFO 1

85

100

115

kHz

Maximum Oscillation Freq. 2

MFO 2

153

180

207

kHz

Stand = by Current

0.5

µA

CE “High” Voltage

EXT Oscillation

0.75

V

CE “Low” Voltage

of EXT Oscillation

0.20

V

CE “High” Current

0.25

µA

CE “Low” Current

-0.25

µA

Efficiency

EFFI

Test Circuit Figure 4

85

%

Note:

1. “Supply Current 1” is the supply current while the oscillator is continuously oscillating. In actual operation the oscillator periodically operates

which results in less average power consumption.

Electrical Characteristics ILC6391