Rainbow-electronics MAX8805Z Manual de usuario descargar pdf (Pagina 4)

MAX8805Y/MAX8805Z

600mA PWM Step-Down Converters in

2mm x 2mm WLP for WCDMA PA Power

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

IN1A

= V

IN1B

= V

IN2

= V

PA_EN

= V

EN1

= V

EN2

= 3.6V, V

= 0V, V

REFIN

= 0.9V, T

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

+25°C, unless otherwise noted.) (Note 1)

PARAMETER CONDITIONS MIN TYP MAX UNITS

LDO2

MAX8805YEWEAA+T 1.746 1.8 1.854

MAX8805YEWEAC+T 2.619 2.7 2.781

MAX8805YEWEAD+T 2.716 2.8 2.884

MAX8805YEWEBE+T 2.765 2.85 2.936

Output Voltage V

LDO2

IN2

= 5.5V, I

LDO2

= 1mA;

IN2

= 3.4V, I

LDO2

= 100mA

MAX8805YEWEGG+T 2.910 3.0

3.090

Output Current 200 mA

Current Limit V

LDO2

= 0V 250 550 750 mA

Dropout Voltage I

LDO2

= 100mA, T

= +25°C 70 200 mV

Line Regulation V

IN2

stepped from 3.5V to 5.5V, I

LDO2

= 100mA 2.4 mV

Load Regulation I

LDO2

stepped from 50µA to 200mA 25 mV

Power-Supply Rejection

ΔV

LDO2

/ ΔV

IN2

10Hz to 10kHz, C

LDO2

= 1µF, I

LDO2

= 30mA 70 dB

Output Noise 100Hz to 100kHz, C

LDO2

= 1µF, I

LDO2

= 30mA 35 µV

RMS

0µA < I

LDO2

< 10mA 100 nF

Output Capacitor for Stable

Operation

0µA < I

LDO2

< 200mA 1 µF

Shutdown Output Impedance V

EN2

= 0V 1 kΩ

REFBP

REFBP Output Voltage 0 ≤ I

REFBP

≤ 1µA 1.237 1.250 1.263 V

REFBP Supply Rejection V

IN2

stepped from 2.55V to 5.5V 0.2 5 mV

Note 1: All devices are 100% production tested at T

= +25°C. Limits over the operating temperature range are guaranteed by design.

1 2 3 4 5 6 7 8 9 ... 20 21

MAX8805Y/MAX8805Z 1

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Rainbow-electronics MAX8805Z Manual de usuario Pagina 4

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