Samsung RL37Lx Manual do Utilizador descarregar pdf (Página 17)

Confidential MAX8698C, Rev08

Page 17/47

DO NOT COPY. DO NOT DISTRIBUTE 12/8/2009

PARAMETER CONDITIONS MIN TYP MAX UNITS

Start up time from

shutdown(Note1)

LDO7

= 1µF, I

LDO7

= 150mA 40 100 µs

Start-up transient overshoot

(Note1)

LDO7

= 1µF, I

LDO7

= 150mA 3 50 mV

Power Supply Reject

ΔLDO7/ΔV

IN6

f=10Hz-10kHz,

LDO7

= 1µF,I

LDO7

=30mA

60 dB

Output Noise Volt. (RMS)

100Hz-100kHz, C

LDO7

= 1µF,

LDO7

=30mA

80 µV

RMS

Shutdown Output Resistance

I2C programmable. See the Register

LDO7_ADISCHG= “1”

1000 Ω

Note1. Design guidance only, not tested during final test.

LDO8 Electrical Characteristics

Operating conditions (unless otherwise specified) V

IN1

to V

IN6

+3.7V, C

BATT+ΣIN_

=20μF, C

REFBP

= 100nF, T

=-40°C to +85°C

PARAMETER CONDITIONS MIN TYP MAX UNITS

Input voltage range

2.7 5.5 V

Default output voltage LDO8

1mA@ V

IN6

+5.5V

150mA@ V

IN6

3.7V

-3% 3.3

+3% V

Programmable Output Voltage

IN1

to V

IN6

+4.2V

LDO8

=75mA

-3%

3.0

3.1

3.2

3.3

3.4

3.5

3.6

+3% V

Output current 150 mA

Current limit LDO8 short to GND 165 360 650 mA

Drop-out voltage

LDO8

=100mA , T

=25°C

60 mV

Line regulation

3.4V≤V

IN6

≤5.5V, I

LDO8

=100mA,

VLDO8=3.0V

2.4 mV

Load regulation 50µA < I

LDO8

< 150mA 25 mV

Ground current (Note1) I

LDO8

=500µA 21 µA

Output capacitor for stable

operation (Note1)

0μA < I

LDO8

< 150mA

MAX ESR = 100mΩ

0.7 1.0 µF

Start up time from

shutdown(Note1)

LDO8

= 1µF, I

LDO8

= 150mA 40 100 µs

Start-up transient overshoot

(Note1)

LDO8

= 1µF, I

LDO8

= 150mA 3 50 mV

Power Supply Reject

ΔLDO8/ΔV

IN6

f=10Hz-10kHz,

LDO8

= 1µF,I

LDO8

=30mA

60 dB

Output Noise Volt. (RMS)

100Hz-100kHz, C

LDO8

= 1µF,

LDO8

=30mA

80 µV

RMS

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