ILC6390 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

ILC6390

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

Fairchild Semiconductor 

ILC6390/91

Electrical Characteristics ILC6390

VOUT = 5.0V TA = 25°C. Unless otherwise specified, VIN = VOUT x 0.6, IOUT = 50mA. See schematic, fig. 3 & 4.

Parameter

Output Voltage

Input Voltage

Operation Startup Voltage

Operation Hold Voltage

Supply Current 1 (Note 1)

Supply Current 2

EXT “High” On-Resistance

Symbol

VOUT

VIN

VST

VST

IDD 1

IDD 2

REXTH

Conditions

Test Circuit Figures 3 & 4

IOUT = 1mA

IOUT = 1mA

VOUT = 4.75V

VOUT = 5.5V

VOUT = 4.75V, VEXT = VOUT-0.4

Min.

4.875

0.70

Typ.

5.000

0.80

31.7

2.4

50

Max.

5.125

10

0.9

63.4

4.8

75

Units.

V

V

V

V

µA

µA

Ω

EXT “Low” On-Resistance

Duty Ratio 1

REXTL

DUTY 1

VOUT = 4.75V, VEXT = 0.4

VOUT = 4.75V, Measuring of EXT

waveform

50 75

Ω

70

75

80

%

Duty Ratio

DUTY 2 VIN = VOUT x 0.95, IOUT = 1mA,

Measuring of EXT High State

50

55

60

%

Maximum Oscillation Freq. 1

Maximum Oscillation Freq. 2

Stand = by Current

CE “High” Voltage

MFO 1

MFO 2

ISTB

VCEH

VOUT = 4.75V, 75% duty

VIN = VOUT x 0.95, 55% duty

VOUT = 4.75V

VOUT = 4.75V, Existence of EXT

Oscillation

85 100 115 kHz

153 180 207 kHz

0.5 µA

0.75

V

CE “Low” Voltage

ICEL VOUT = 4.75V, Disappearance of EXT

Oscillation

0.20 V

CE “High” Current

CE “Low” Current

Efficiency

ICEH

EFFI

VCE = VOUT = 4.75V

VOUT = 4.75, VCE = 0V

Test Circuit Figures 3 & 4

0.25 µA

-0.25 µA

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.

©2001 Fairchild Semiconductor Corporation

4

Share Link: