ILC6380 datasheet(2/6 Pages) IMPALA

2 / 6 page

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

Impala Linear Corporation

(408) 574-3939

www.impalalinear.com

Sept 1999

ILC6380/1 1.4

Parameter

Symbol

Ratings

Units

VOUT Input Voltage

VOUT

Voltage on pin LX

VLX

Current on pin LX

ILX

400

Voltage on pin EXT

VEXT

VSS-0.3~VOUT+0.3

Current on pin EXT

IEXT

±50

CE Input Voltage

VCE

Continuous Total Power Dissipation

500

Operating Ambient Temperature

TOPR

-30~+80

°C

Storage Temperature

TSTG

-40~+125

°C

Stresses above those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent device failure. Functionality at

or above these limits is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliabil-

ity. Operating ranges define those limits between which the functionality of the device is guaranteed.

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)”

3. Switching frequency is determined by delay time of internal comparator to turn Lx “off”, and minimum “on” time as determined

by MAXDTY spec.

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Output Voltage

VOUT

4.875

5.000

5.125

Input Voltage

VIN

Oscillation Startup

Voltage

VST

LX = 10k

Ω pull-up to 5V, V

OUT = VST

0.8

Operation Startup

Voltage

VST1

IOUT = 1mA

0.9

No-Load Input Current

IIN

IOUT = 0mA (See Note 1)

23.0

46.0

µA

Supply Current 1

(See Note 2)

IDD 1

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V

78.6

131.1

µA

Supply Current 2

IDD 2

LX = 10k

Ω pull-up to 5V, V

OUT = 5.5V

6.9

13.8

µA

LX Switch-On

Resistance

RSWON

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V

1.3

2.3

Ω

LX Leakage Current

ILXL

No external components, VOUT = VLX = 10V

1.0

µA

Oscillator Freq.

FOSC

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

Measuring of LX waveform

100

115

kHz

Maximum Duty Ration

MAXDTY

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

Measuring of LX on-time

PFM Duty Ration

PFMDTY

VIN = 4.75V, Measuring of LX on-time

Stand-by Current

ISTB

LX = 10k

Ω pull-up to 5V, V

OUT =4.5V

0.5

µA

CE “High” Voltage

VCEH

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

Existence of LX Oscillation

0.75

CE “Low” Voltage

VCEL

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

Stopped LX Oscillation

0.20

CE “High” Current

ICEH

LX = 10k

Ω pull-up to 5V, V

OUT = VCE = 4.5V

0.25

µA

CE “Low” Current

ICEL

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

VCE = 0V

-0.25

µA

LX Limit Voltage

VLXLMT

LX = 10k

Ω pull-up to 5V, V

OUT = 4.5V,

FOSC > FOSC x 2 (See Note 2)

0.7

1.1

Efficiency

EFFI

Slow Start Time

TSS

msec

VOUT = 5.0V, FOSC = 100kHz TA - 25°C. Unless otherwise specified, VIN = VOUT x 0.6, IOUT = 50mA. See schematic, figure 3

Absolute Maximum Ratings (TA = 25°C)

Electrical Characteristics

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