Rainbow-electronics MAX8982X Manual de usuario descargar pdf (Pagina 12)

Power-Management ICs for

ICERA E400/E450 Platform

MAX8982A/MAX8982X

OUT1 (LDO1) ELECTRICAL CHARACTERISTICS

(MAX8982A: V

DDA

= +3.2V and C

VDD_

= 10FF, MAX8982X: V

DDA

= +3.3V and C

VDD_

= 20FF, C

REFBP

= 0.1FF, C

OUT1

= 4.7FF,

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

= +25NC.) (Note 3)

OUT2 (LDO2) ELECTRICAL CHARACTERISTICS

(MAX8982A: V

DDA

= +3.2V and C

VDD_

= 10FF, MAX8982X: V

DDA

= +3.3V and C

VDD_

= 20FF, C

REFBP

= 0.1FF, C

OUT2

= 1FF,

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

= +25NC.) (Note 3)

PARAMETER CONDITION MIN TYP MAX UNITS

Default Output Voltage I

LOAD

= 50mA 2.619 2.70 2.781 V

Maximum Output Current 300 mA

Current Limit (Note 4) V

OUT1

= 90% of its regulation 310 550 940 mA

Dropout Voltage (Note 4) I

LOAD

= 200mA, T

= +85NC 50 100 mV

Line Regulation 2.9V P V

DDA

P 3.65V, I

LOAD

= 150mA 2.4 mV

Load Regulation 1mA < I

LOAD

< 300mA 12 mV

Transient Response

di/dt = I

MAX

/0.1Fs, 1kHz < 1/T < 0.5MHz, where T is the

period of step load, 1mA to 300mA

50 mV

Power-Supply Rejection

OUT

/DV

f = 10Hz to 10kHz, I

LOAD

= 30mA 60 dB

Output Noise Voltage 100Hz to 100kHz, I

LOAD

= 30mA 45 FV

RMS

Programmable Output Voltages I

LOAD

= 50mA

2.65

2.70

2.75

2.80

2.85

2.90

2.95

3.00

Startup Time from Shutdown

(Note 4)

LOAD

= 300mA 40 100 Fs

Startup Transient Overshoot

(Note 4)

LOAD

= 300mA 3 50 mV

Shutdown Output Impedance

(Active Discharge Resistance)

C programmable, default off 100

PARAMETER CONDITION MIN TYP MAX UNITS

Default Output Voltage I

LOAD

= 50mA 1.746 1.80 1.854 V

Maximum Output Current 150 mA

Current Limit (Note 4) V

OUT2

= 90% of its nominal regulation voltage 165 360 650 mA

Dropout Voltage (Note 4) I

LOAD

= 100mA, T

=+85NC 150 300 mV

Line Regulation 2.9V P V

DDA

P 3.65V, I

LOAD

= 100mA 2.4 mV

Load Regulation 50FA < I

LOAD

< 150mA 25 mV

Power-Supply Rejection

OUT

/DV

f = 10Hz to 10kHz, I

LOAD

= 30mA 60 dB

Output Noise Voltage 100Hz to 100kHz, I

LOAD

= 30mA 45 FV

RMS

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 72 73

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Rainbow-electronics MAX8982X Manual de usuario Pagina 12

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