Rainbow-electronics MAX8982X Bedienungsanleitung PDF herunterladen (Seite 8)

Power-Management ICs for

ICERA E400/E450 Platform

MAX8982A/MAX8982X

8

GENERAL ELECTRICAL CHARACTERISTICS (continued)

(MAX8982A: V

IN1A

= V

IN1B

= +5.0V and C

OUT1,2,3+CIN_

= 1000FF, MAX8982X: V

IN1A

=

V

IN1B

= +3.3V and C

O

UT1,2,3+CIN_

= 20FF,

C

REFBP

= 0.1FF, T

A

= -40NC to +85NC. Typical values are at T

A

= +25NC, unless otherwise noted.) (Note 3)

PARAMETER CONDITIONS MIN TYP MAX UNITS

OPERATING VOLTAGE

IN1A, IN1B Operating Voltage

MAX8982A 4.1 5.5

V

MAX8982X 2.9 5.5

Undervoltage Lockout

MAX8982A, V

IN1_

rising 3.5 3.8 4.1

V

MAX8982A, V

IN1_

falling 3.5

MAX8982X, V

IN1_

rising 2.5 2.7 2.9

MAX8982X, V

IN1_

falling 2.4

OVERVOLTAGE LOCKOUT (OVP)

Overvoltage Lockout

(Shutdown All Outputs Including

LDO7)

V

IN1_

rising 5.75 5.93 V

IN1A, IN1B

Overvoltage

Hysteresis

250 mV

THERMAL SHUTDOWN

Threshold T

J

rising 160 NC

Hysteresis 10 NC

HOT TEMPERATURE DETECTION

Threshold Interrupt enabled, T

J

rising, typical hysteresis = +10NC +125 NC

REFERENCE

REFBP Output Voltage 0 P I

REFBP

P 1FA 0.788 0.80 0.812 V

Supply Rejection 4.1V P V

IN1_

P 5.5V 0.2 mV

LOGIC AND CONTROL INPUTS (SDA, SCL, EN, DVS1, PWR_REQ)

Input Low Level T

A

= +25NC 0.3 V

Input High Level T

A

= +25NC 1.2 V

Logic Input Current

0V < V

IN1_

< 5.5V, T

A

= +25NC -1 +1

FA

0V < V

IN1_

< 5.5V, T

A

= +85NC 0.1

LOGIC AND CONTROL OUTPUTS

SDA Output Low Level I

SDA

= 6mA 0.4 V

I

2

C INTERFACE (V

SCL

= V

SDA

= 1.8V, Note 2, Figure 16)

Clock Frequency 400 kHz

Bus Free Time Between START

and STOP (t

BUF

)

1.3 Fs

Hold Time Repeated START

Condition (t

HD_STA

)

0.6 Fs

SCL Low Period (t

LOW

) 1.3 Fs

SCL High Period (t

HIGH

) 0.6 Fs

Setup Time Repeated START

Condition (t

SU_STA

)

0.6 Fs

SDA Hold Time (t

HD_DAT

) 0 Fs

SDA Setup Time (t

SU_DAT

) 100 ns

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