Rainbow-electronics MAX1701 Manual de usuario descargar pdf (Pagina 7)

MAX1700/MAX1701

1-Cell to 3-Cell, High-Power (1A),

Low-Noise, Step-Up DC-DC Converters

_______________________________________________________________________________________ 7

= 1.2V, V

OUT

= 3.3V, C

OUT

= 440µF

A = V

OUT

RIPPLE, 200mV/div, AC COUPLED

B = LOAD CURRENT, 50mA TO 400mA, 0.2A/div,

PULSE WIDTH = 416µs

DECT LOAD-TRANSIENT RESPONSE

3.3V

2ms/div

MAX1700-13

Typical Operating Characteristics (continued)

(Circuit of Figure 1, T

= +25°C, unless otherwise noted.)

2.7

0.1k 1k 10k 100k 1M

NOISE SPECTRUM

OUT

= 3.3V, V

= 1.2V, R

LOAD

= 50Ω)

MAX1700-14

FREQUENCY (Hz)

NOISE (mV

RMS

)

A = V

ON1

, 2V/div

B = V

OUT

, 1V/div

C = INPUT CURRENT, 0.2A/div

POWER-ON DELAY

(PFM MODE)

0mA

3.3V

5ms/div

MAX1700-11

= 3.6V, V

OUT

= 5V, C

OUT

= 440µF

A = V

OUT

RIPPLE, 200mV/div, AC COUPLED

B = LOAD CURRENT, 100mA TO 1A, 0.5A/div,

PULSE WIDTH = 577µs

GSM LOAD-TRANSIENT RESPONSE

1ms/div

MAX1700-12

= 1.1V, V

OUT

= 3.3V

A = LOAD CURRENT, 0mA TO 200mA, 0.2A/div

B = V

OUT

RIPPLE, 50mV/div, AC COUPLED

LOAD-TRANSIENT RESPONSE

200mA

2ms/div

MAX1700-10

1 2 3 4 5 6 7 8 9 10 11 12 ... 15 16

MAX1700/MAX1701 1

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Rainbow-electronics MAX1701 Manual de usuario Pagina 7

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