EL7584 datasheet(2/16 Pages) RENESAS

2 / 16 page

EL7584

FN7317 Rev 2.00

Page 2 of 16

February 4, 2005

IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typ values are for information purposes only. Unless otherwise noted, all tests are

at the specified temperature and are pulsed tests, therefore: TJ = TC = TA

Absolute Maximum Ratings (TA = 25°C)

LX Pin Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V

VDDB, VDDP, VDDN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18V

VDDC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16.5V

Maximum Continuous VBOOST Output Current. . . . . . . . . . . 800mA

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C

Ambient Operating Temperature . . . . . . . . . . . . . . . .-40°C to +85°C

Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Curves

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the

device at these or any other conditions above those indicated in the operational sections of this specification is not implied.

Electrical Specifications

VIN = 3.3V, VBOOST = 12V, ROSC = 62k, TA = 25°C, Unless Otherwise Specified.

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX

UNIT

DC/DC BOOST CONVERTER

IQ1_B

Quiescent Current - Shut-down

EN = 0V

0.8

µA

IQ2_B

Quiescent Current - Switching

EN = VDDB

4.8

V(FBB)

Feedback Voltage

1.275

1.300

1.325

VREF

Reference Voltage

1.260

1.310

1.360

VROSC

Oscillator Set Voltage

1.260

1.325

1.390

I(FBB)

Feedback Input Bias Current

0.1

µA

VDDB

Boost Converter Supply Range

DMAX

Maximum Duty Cycle

I(LX)MAX

Peak Internal FET Current

1.75

RDS-ON

Switch On Resistance

at VBOOST = 10V, I(LX) total = 350mA

0.22



ILEAK-SWITCH

Switch Leakage Current

I(LX) total

µA

VBOOST

Output Range

VBOOST > VIN + VDIODE

517

VBOOST/VIN Line Regulation

2.7V < VIN < 13.2V, VBOOST = 15V

0.1

VBOOST/IO1 Load Regulation

50mA < IO1 < 250mA

0.5

FOSC-RANGE

Frequency Range

ROSC range = 240k to 60k

200

1200

kHz

FOSC1

Switching Frequency

ROSC = 62k

900

1000

1100

kHz

VCOM BUFFER

VDDC

Supply Voltage Range

IQ1, VDDC

VDDC Disable Current

VDDC = 12V, EN = 0V

5.5

µA

IQ2, VDDC

VDDC Enable Current

VDDC = 12V, VEN = VDDB, no load

1.7

VCOM-offset

Accuracy of VCOM Output Voltage

2V < VCOM < (VDDC - 2V)

-10

+10

I(INC)

VCOM Input Bias Currents

Current magnitude

-0.1

0.01

0.1

µA

RO(VCOM)VCOM Output Impedance

VDDC = VBOOST = 12V, VCOM = 6V with

-100mA < ILOAD < 100mA

CLOAD for VCOM > 0.47µF, MLCC

0.25



ICOM(max)

Output Current Limit

150

PSRR

Supply Voltage Rejection

VINC = VDDC/2, 9V < VDDC < 15V

102

CMRR

Common Mode Voltage Rejection

VDDC = 12V, 2V < VINC < 10V

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