Rainbow-electronics MAX1538 Manual de usuario descargar pdf (Pagina 4)

MAX1538

Power-Source Selector for

Dual-Battery Systems

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

BATA

= V

BATB

= V

CHGIN

= 16.8V, C

VDD

= 1µF, V

MINVA

= V

MINVB

= 0.93V, V

EXTLD

= V

ADPIN

= 28V, V

CHRG

= V

BATSEL

= V

RELRN

= 0,

ADPPWR

= C

REVBLK

= C

ADPBLK

= C

DISBAT

= C

DISA

= C

DISB

= C

CHGA

= C

CHGB

= 4.7nF, T

= 0°C to +85°C, unless otherwise noted.

Typical values are at T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

ADPPWR, REVBLK, ADPBLK,

DISBAT, DISA, DISB, CHGA,

CHGB Turn-On Time

SOURCE

= 15V, V

= 13V to V

= 9V

0.3

0.88

µs

ADPPWR, REVBLK, ADPBLK,

DISBAT, DISA, DISB, CHGA,

CHGB Turn-Off Time

SOURCE

= 15V, V

= 9V to V

= 13V

0.3

0.88

µs

STATE SELECTION INPUTS

CHRG, BATSEL, RELRN Input

Low Voltage

0.8 V

CHRG, BATSEL, RELRN Input

High Voltage

2.1 V

CHRG, BATSEL, RELRN Input

Leakage Current

CHRG

= V

BATSEL

= V

RELRN

= 5.5V 0.1 1 µA

STATE OUTPUTS

OUT_

= 0.4V 1

OUT0, OUT1, OUT2 Sink Current

OUT_

= 5.5V 25

OUT0, OUT1, OUT2 Leakage

Current

OU T _

= 5.5V

0.1 1 µA

TRANSITION TIMES

MINV_ Comparator Delay t

MINV

BAT

_ = 5.5V to V

BAT

_ = 4.45V 5.5 11 µs

AIRDET and ACDET Comparator

Delay

ADP

Falling edge with -20mV overdrive 2.7 6.0 µs

BAT_ Removal Comparator Delay

Falling edge with -20mV overdrive 10 µs

Battery-Insertion Blanking Time t

BBLANK

13 21 31 ms

State-Machine Delay 50 ns

MOSFET Turn-On Delay t

TRANS

5 7.5 10 µs

1 2 3 4 5 6 7 8 9 ... 21 22

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Rainbow-electronics MAX1538 Manual de usuario Pagina 4

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