EL7641ILTZ datasheet(3/19 Pages) RENESAS

3 / 19 page

EL7640, EL7641, EL7642

FN7415 Rev 2.00

Page 3 of 19

February 22, 2006

Absolute Maximum Ratings (TA = 25°C)

IN, CTL to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +6.5V

COMP, FB, FBP, FBN, DEL, REF to AGND. . . . . -0.3V to VIN+0.3V

PGND, BGND to AGND. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.3V

LX to PGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +24V

SUP to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +18V

DRVP, SRC to AGND . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +36V

POS1, NEG1, OUT1, POS2, NEG2, OUT2, POS3, OUT3,

POS4, NEG4, OUT4, POS5, OUT5 to AGND . . -0.3V to VSUP+0.3V

DRVN to AGND . . . . . . . . . . . . . . . . . . . . . . . VIN -20V to VIN +0.3V

COM, DRN to AGND . . . . . . . . . . . . . . . . . . . . -0.3V to VSRC +0.3V

LX Maximum Continuous RMS Output Current. . . . . . . . . . . . . 1.6A

OUT1, OUT2, OUT3, OUT4, OUT5

Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . ±75mA

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

Maximum Continuous Junction Temperature . . . . . . . . . . . . +125°C

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

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

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.

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

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

Electrical Specifications

VIN = 3V, VBOOST = VSUP = 12V, VSRC = 20V, Over temperature from -40°C to 85°C.

Unless Otherwise Specified.

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX

UNIT

SUPPLY

VIN

Input Supply Range

2.6

5.5

VLOR

Undervoltage Lockout Threshold

VIN rising

2.4

2.5

2.6

VLOF

Undervoltage Lockout Threshold

VIN falling

2.2

2.3

2.4

Quiescent Current

LX not switching

2.5

ISS

Quiescent Current - Switching

LX switching

TFD

Fault Delay Time

CDEL = 220nF

VREF

Reference Voltage

TA = 25°C

1.19

1.215

1.235

1.187

1.215

1.238

SHUTDN

Thermal Shutdown Temperature

140

°C

MAIN BOOST REGULATOR

VBOOST

Output Voltage Range

(Note 1)

VIN+

15%

FOSC

Oscillator Frequency

1050

1200

1350

kHz

DCM

Maximum Duty Cycle

VFBB

Boost Feedback Voltage

TA = 25°C

1.192

1.205

1.218

1.188

1.205

1.222

VFTB

FB Fault Trip Level

Falling edge

0.85

0.925

1.020

VBOOST/

IBOOST

Load Regulation

50mA < ILOAD < 250mA

0.1

VBOOST/

VIN

Line Regulation

VIN = 2.6V to 5.5V

0.08

%/V

IFB

Input Bias Current

VFB = 1.35V

500

gmV

FB Transconductance

dI = ±2.5µA at COMP, FB = COMP

160

µA/V

RONLX

LX On Resistance

160



ILEAKLX

LX Leakage Current

VFB = 1.35V, VLX = 13V

0.02

µA

ILIMLX

LX Current Limit

Duty cycle = 65% (Note 1)

3.0

tSSB

Soft-Start Period

CDEL = 220nF

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