ILC6381 데이터 시트보기 (PDF) - Fairchild Semiconductor

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ILC6381

SOT-89 Step-up Dual-Mode Switcher with Shutdown

Fairchild Semiconductor 

ILC6380/81

Electrical Characteristics ILC6380BP-50 (continued)

Parameter

EXT “Low” On-

Resistance

Oscillator Frequency

Maximum Duty Ratio

CE “High” Voltage

CE “Low” Voltage

CE “High” Current

CE “Low” Current

Efficiency

Slow Start Time

Symbol

Conditions

REXTL

FOSC

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, VEXT = VOUT - 0.4V

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, Measuring of EXT

waveform

MAXDTY EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, Measuring of EXT high

state

VCEH

VCEL

ICEH

ICEL

EFFI

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, Existence of Oscillation

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, Stopped EXT Oscillation

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, VCE = VOUT x 0.95V

EXT = 10kΩ pull-up to 5V,

VOUT = 4.5V, VCE = 0V

TSS

Min.

85

80

0.75

Typ.

30

100

87

85

10

Max.

50

Units

Ω

115

kHz

92

%

V

0.20

V

0.25

µA

-0.25

µA

%

msec

Notes:

1. The Schottky diode (S.D.), in figure 3 must be type MA735, with Reverse current (IR) < 1.0µA at reverse voltage

(VR)=10.0V

2. “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.

The current that is actually provided by external VIN source is represented by “No-Load Input Current (IIN)”

©2001 Fairchild Semiconductor Corporation

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