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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CXLD140 数据手册

16µA I , 1.2A PWM DC-DC

Step-Down Converters

6/MAX157

ELECTRICAL CHARACTERISTICS (continued)

= 3.6V, T = - 40°C to +85°C. Typical values are at T = +25°C, unless otherwise noted.) (Note 1)

SHDN A A

(V = V

= V

INP

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

= 2.6V to 3.6V

-0.37

MAX1556,

D1 = IN, D2 = GND;

MAX1556A

D1 = D2 = IN

= 3.6V to 5.5V

0.33

Line Regulation

= 2.6V to 3.6V

= 3.6V to 5.5V

= 3.6V

-0.1

0.09

0.19

0.23

0.35

0.42

0.27

0.33

1.8

MAX1557,

D1 = IN, D2 = GND

0.35

0.7

MAX1556/MAX1556A

MAX1557

= 2.6V

p-Channel On-Resistance

n-Channel On-Resistance

Ω

= 3.6V

= 2.6V

= 3.6V

= 2.6V

0.48

Ω

MAX1556/MAX1556A

MAX1557

1.5

0.8

2.1

1.2

p-Channel Current-Limit

Threshold

1.0

n-Channel Zero Crossing

Threshold

MAX1556/MAX1556A

MAX1557

1.8

1.0

RMS LX Output Current

LX Leakage Current

RMS

= +25°C

= +85°C

0.1

= 5.5V, LX =

µA

GND or IN

Maximum Duty Cycle

100

Minimum Duty Cycle

Internal Oscillator Frequency

SS Output Impedance

0.9

200

1.1

300

200

MHz

kΩ

Ω

∆V / I for I = 2µA

130

SS SS

SS Discharge Resistance

Thermal-Shutdown Threshold

SHDN = GND, 1mA sink current

+160

°C

Thermal-Shutdown Hysteresis

LOGIC INPUTS (D1, D2, SHDN)

Input-Voltage High

°C

2.6V ≤ V ≤ 5.5V

1.4

Input-Voltage Low

0.4

= +25°C

= +85°C

0.1

Input Leakage

µA

Note 1: All units are 100% production tested at T = +25°C. Limits over the operating range are guaranteed by design.

Note 2: For the MAX1556, 3.3V output accuracy is specified with a 4.2V input.

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