MAX1773EUP datasheet(2/20 Pages) MAXIM

Part #	MAX1773EUP

Description	Power Source Selector for Dual-Battery Systems

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Manufacturer	MAXIM [Maxim Integrated Products]

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Power Source Selector for

Dual-Battery Systems

2

_______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

VBATA, VBATB to GND ............................................-0.3V to +20V

VCOMA to GND........................................-0.3V to (VBATA + 0.3V)

VCOMB to GND........................................-0.3V to (VBATB + 0.3V)

VCHGA, VCHGB, VEXTLD, VACDET to GND ..............-0.3V to +30V

VPDS, VDISA, VDISB to GND ...................-0.3V to (VEXTLD + 0.3V)

VDD, VBATSEL, V ACPRES, VBATSTAT, VTCOMP,

VMINV to GND.......................................................-0.3V to +6V

VTHMA, VTHMB (Note 1)............................................ -0.3V to +6V

Continuous Current out of THMA, THMB............................20mA

I ACPRES, IBATSTAT Sink Current..........................................30mA

Continuous Power Dissipation (TA = +70°C)

20-Pin TSSOP (derate 7.0mW/°C above +70°C) ........560mW

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

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

Lead Temperature (soldering, 10s) .................................+300°C

ELECTRICAL CHARACTERISTICS

(VBATA = VBATB = 16.8V, CVDD = 3.3µF, VMINV = 0.93V, VEXTLD = VACDET = 28V, VTCOMP = 3V, VTHMA = VTHMB = 1.65V,

VBATSEL = 0, CCOMA = CCOMB = CDISA = CDISB = CCHGA = CCHGB = CPDS = 5nF, TA = 0°C to +85°C, unless otherwise noted.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

EXTLD Supply Voltage Range

VEXTLD > VBATA and VBATB

4.75

28.00

V

BATA, BATB Supply Voltage Range

4.75

19.00

V

VACDET = 28V

5

8

BATA, BATB Quiescent Current

(Current from the higher voltage supply)

VBATA = 4.75V to 19V,

VBATB = 4.75V to 19V,

IVDD = 0

VACDET = 2.2V to

VBATA and VBATB

40

70

µA

VACDET = 28V

5

8

BATA, BATB Quiescent Current

(Current from the lower voltage supply)

VBATA = 4.75V to 19V,

VBATB = 4.75V to 19V,

IVDD = 0

VACDET = 2.2V to

VBATA and VBATB

813

µA

VACDET = 28V, VEXTLD = 28V

35

55

EXTLD Quiescent Current

VACDET= 2.2V to VBATA and VBATB,

VEXTLD = 16V

58

µA

LINEAR REGULATOR

IVDD = 0 to 100µA

3.234

3.3

3.367

VDD Output Voltage

IVDD = 100µA to 1mA

3.168

3.3

3.432

V

VBATA or VBATB = 5V to 19V, VEXTLD = 5V

1.0

VBATA = VBATB = 5V, VEXTLD = 5V to 28V

1.0

VDD Power-Supply Rejection Ratio

VBATA, VBATB, or VEXTLD = 5V to 19V,

sawtooth at 10V/µs, other supplies = 12V

1

mV/V

VDD Undervoltage Lockout

Hysteresis is typically 50mV

2.0

2.5

3.0

V

COMPARATORS

TCOMP Undervoltage Lockout

(Note 2)

0

1.1

V

THM_ Input Voltage Range

0

5.5

V

THM_ Input Leakage Current

VTHM_ = 5.5V

0.1

100

nA

VTHMA = VTHMB = 0 to 5.5V

0

5.5

TCOMP Input Voltage Range

VTHMA = VTHMB = 0 to 5.5V, VBATA = VBATB

= VEXTLD = 4.75V

0

4.3

V

Note 1: Signals on THMA and THMB below -0.3V are clamped by internal diodes limit forward diode current to maximum continuous current. When voltage

on these pins is below -0.3V.

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