ZXLB1600 datasheet(2/7 Pages) ZETEX

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ZXLB1600

ABSOLUTE MAXIMUM RATINGS

(Voltages to GND unless otherwise stated)

Output Voltage

30V

Input Voltage

Switch output current

500mA

Power Dissipation

800mW

Operating Temperature

0 to 70

°C

Storage Temperature

-55 to 125

°C

Junction Temperature

150

°C

ELECTRICAL CHARACTERISTICS:

Test conditions unless otherwise stated: VIN=3.0V, TAMB=25°

°°°C

Symbol Parameter

Conditions

Min Typ Max Units

General

VIN

Input voltage

1.6

5.5

IIN

Supply current

Shutdown

Quiescent

VEN = 0V, VIN =5.5V (Note 1)

VEN = VIN, IOUT = 0V

µA

Isolating switch

RISO

‘On’ resistance

VEN = VIN

0.8

Ω

IISO

Leakage current

VEN = 0V

µA

LX Switch

ILX

Switch peak current limit

0.2

0.3

0.5

RLX

‘On’ resistance

1.0

Ω

ILX(leak)

Switch leakage current

µA

Controller output

VOUT

Output voltage range

VIN

IOUT

Maximum output current

Lx = 22µH, VOUT = 28V

∆VLNR

Line regulation

IOUT = 1mA, 2V < VIN <5.5V

0.1

%/V

∆VLDR

Load regulation

VOUT = 28V, 100uA < IOUT < 5mA

0.01

%/mA

fLX

Operating frequency

200

500

kHz

TON

Output ‘ON’ time

LX output low

µs

TOFF

Output ‘OFF’ time

LX output off

µs

Efficiency

VOUT = 28V, IOUT = 1mA, L=22µH

Note:1 Shutdown current includes 3µA (max) for the battery low comparator, which remains active in shutdown

mode

DRAFT ISSUE J January 2002

ZXLB1600

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