Datasheet > CXLD140

CXLD140

更新时间： 2022-12-21 13:00:11

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
12页	276K
描述
16μA IQ, 1.2A PWM Step-Down DC-DC Converters

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数据手册

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CXLD140 数据手册

16µA I , 1.2A PWM DC-DC

Step-Down Converters

6/MAX157

Typical Operating Characteristics (continued)

(V = V

= 3.6V, D1 = D2 = SHDN = IN, Circuits of Figures 2 and 3, T = +25°C, unless otherwise noted.)

INP

EXTERNAL FEEDBACK

SWITCHING WAVEFORMS

LIGHT-LOAD SWITCHING WAVEFORMS

SOFT-START/SHUTDOWN WAVEFORMS

MAX1556/7 toc10b

MAX1556/7 toc10

MAX1556/7 toc11

5V/div

SHDN

20mV/div

OUT

AC-COUPLED

1V/div

OUT

2V/div

= 470pF

= 4Ω

LOAD

2V/div

500mA/div

200mA/div

500mA/div

= 5V, V

= 3.3V, I

= 500mA

OUT

2µs/div

4µs/div

100µs/div

LOAD TRANSIENT

SOFT-START RAMP TIME vs. C

MAX1556/7 toc13

50mV/div

AC-COUPLED

OUT

500mA/div

OUT

= 20mA

OUTMIN

0.1

20µs/div

500

1000

1500

(pF)

2000

2500

LOAD TRANSIENT

LINE TRANSIENT

BODE PLOT

MAX1556/7 toc14

MAX1556/7 toc15

MAX1556/7 toc16

240

210

180

150

120

50mV/div

AC-COUPLED

3.5V

OUT

-10

-20

-30

-40

10mV/div

AC-COUPLED

OUT

0dB

PHASE MARGIN = 53°

500mA/div

200mA/div

OUT

-50

-60

-30

-60

= 180mA

= 22µF, R

= 4Ω

OUTMIN

OUT

LOAD

20µs/div

40µs/div

0.1

100

1000

FREQUENCY (kHz)

_______________________________________________________________________________________

1 2 3 456 7 8...12

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