Rainbow-electronics MAX8982X Uživatelský manuál stáhnout pdf (Strana 14)

Power-Management ICs for

ICERA E400/E450 Platform

MAX8982A/MAX8982X

14

OUT4 (LDO4) ELECTRICAL CHARACTERISTICS

(MAX8982A/MAX8982X: V

IN3

= V

BUCK2

= 1.8V, C

IN3

= 2.2FF, C

REFBP

= 0.1FF, C

OUT4

= 2.2FF, T

A

= -40NC to +85NC, unless other-

wise noted. Typical values are at T

A

= +25NC.) (Note 3)

OUT5 (LDO5) ELECTRICAL CHARACTERISTICS

(MAX8982A: V

DDB

= +3.2V and C

VDD_

= 10FF, MAX8982X: V

DDB

= +3.3V and C

VDD_

= 20FF, C

REFBP

= 0.1FF, C

OUT5

= 1FF,

T

A

= -40NC to +85NC, unless otherwise noted. Typical values are at T

A

= +25NC.) (Note 3)

PARAMETER CONDITION MIN TYP MAX UNITS

Default Output Voltage I

LOAD

= 10mA 0.873 0.9 0.927 V

Maximum Output Current 50 mA

Current Limit (Note 4) V

OUT4

= 90% of its regulation 55 120 220 mA

Load Regulation 50FA < I

LOAD

< 10mA 25 mV

Power-Supply Rejection

DV

OUT

/DV

IN

f = 10Hz to 10kHz, I

LOAD

= 10mA 60 dB

Output Noise Voltage 100Hz to 100kHz, I

LOAD

= 10mA 45 FV

RMS

Programmable Output Voltage I

LOAD

= 10mA

0.80

V

0.90

1.00

1.10

1.20

Startup Time from Shutdown

(Note 4)

I

LOAD

= 50mA 100 Fs

Startup Transient Overshoot

(Note 4)

I

LOAD

= 50mA 50 mV

Shutdown Output Impedance

(Active Discharge Resistance)

I

2

C programmable, default off 100

I

PARAMETER CONDITION MIN TYP MAX UNITS

Default Output Voltage I

LOAD

= 50mA 2.91 3.00 3.09 V

Maximum Output Current 150 mA

Current Limit (Note 4) V

OUT5

= 90% of its regulation 165 360 650 mA

Dropout Voltage (Note 4) I

LOAD

= 100mA, T

A

= +85NC 150 300 mV

Line Regulation 3.2V P V

DDB

P 3.65V, I

LOAD

= 100mA 2.4 mV

Load Regulation 50FA < I

LOAD

< 150mA, V

OUT

= 2.8V 25 mV

Power-Supply Rejection

DV

OUT

/DV

IN

f = 10Hz to 10kHz, I

LOAD

= 30mA 60 dB

Output Noise Voltage 100Hz to 100kHz, I

LOAD

= 30mA 45 FV

RMS

Programmable Output Voltage I

LOAD

= 50mA, V

DDB

= 3.4V for V

OUT

= 3.2V

2.80

V

2.90

3.00

3.20

Startup Time from Shutdown

(Note 4)

I

LOAD

= 150mA 100 Fs

Startup Transient Overshoot

(Note 4)

I

LOAD

= 150mA 50 mV

Shutdown Output Impedance

(Active Discharge Resistance)

I

2

C programmable, default off 100

I

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