Samsung RL37Lx Manuale Utente Scaricare il pdf (Pagina 10)

Confidential MAX8698C, Rev08

Page 10/47

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

Toff 70 nsec

Shutdown Output Resistance

I2C programmable.

See the Register

Buck1_ADISCHG= “1”

Buck2_ADISCHG= “1”

1000 Ω

Output Load Regulation

Equal to inductor DC

resistance divided by 4

/4 V/A

Lx Leakage Current

Lx=PGND or IN, Ta=25℃

0.1 1 uA

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

Buck Converter 3 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 UNIT

Ground Current I

LOAD

=0, no switching (Note1) 26

μA

Input Voltage Range 2.7 5.5 V

Default output Voltage I

Load

=100mA -3% 1.8 +3% V

Programmable Output Voltage

Load

=100mA, Programmable

Step = 100mV

-3%

1.6

1.7

1.8

1.9

2.0

2.1

2.2

2.3

2.4

2.5

2.6

2.7

2.8

2.9

3.0

3.1

3.2

3.3

3.4

3.5

3.6

+3% V

Output Voltage Line regulation

IN1

to V

IN6

+2.7V to 5.5V

0.3 %/V

PFET Switch 900 1350 1800 mA

Current Limit

NFET Rectifier 700 1050 1400 mA

PFET Switch, I

= -150mA 0.45 Ohms

On-Resistance

NFET Rectifier, I

= 150mA 0.25 Ohms

Rectifier Off Current Threshold 40 mA

Ton 70 nsec

Minimum On- and Off-Times

Toff 70 nsec

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 46 47

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