MAX1572ETC075 データシートの表示（PDF） - Maxim Integrated

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MAX1572ETC075

800mA, 2MHz, PWM DC-to-DC Step-Down Converter with RESET

Maxim Integrated 

800mA, 2MHz, PWM DC-to-DC

Step-Down Converter with RESET

ABSOLUTE MAXIMUM RATINGS

ABATT, BATT, EN1, EN2, RESET, OUT,

SS to GND ............................................................-0.3V to +6V

PGND to GND .......................................................-0.3V to +0.3V

LX Current (Note 1) .............................................................±2.1A

Output Short-Circuit Duration ............................................Infinite

Continuous Power Dissipation (TA = +70°C)

12-Pin Thin QFN (derate 16.9mW/°C above +70°C)...1349mW

Operating Temperature Range ...........................-40°C to +85°C

Junction Temperature ......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Note 1: LX has internal clamp diodes to PGND and BATT. Applications that forward bias these diodes should take care not to

exceed the IC’s package power dissipation limits.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS

(VBATT = 3.6V, TA = +0°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)

PARAMETER

BATT Input Voltage

Undervoltage Lockout Threshold

Quiescent Supply Current

Shutdown Supply Current

Maximum Output Current

OUT Bias Current

Output-Voltage Accuracy

(Voltage Positioning)

Line Regulation

P-Channel On-Resistance

N-Channel On-Resistance

P-Channel Current-Limit Threshold

N-Channel Current-Limit Threshold

N-Channel Zero-Crossing Threshold

LX Output Current

LX Leakage Current

Maximum Duty Cycle

Minimum Duty Cycle

Switching Frequency

SS Output Impedance

CONDITIONS

VBATT rising and falling, 1% hysteresis

EN1 = GND, EN2 = BATT, no switching

EN1 = BATT, EN2 = GND, no switching

EN1 = EN2 = GND, TA = +25°C

No load, EN1 = EN2 = BATT

100mA load

300mA load

550mA load

800mA load

ILX = 180mA

ILX = 180mA

VBATT = 3.6V

VBATT = 2.6V

VBATT = 3.6V

VBATT = 2.6V

EN1 = EN2 = BATT

EN1 = BATT, EN2 = GND

(Note 2)

EN1 = EN2 = GND

EN1 = BATT, EN2 = GND or

EN1 = GND, EN2 = BATT

EN1 = EN2 = BATT

MIN

2.6

2.20

800

-0.4

1.00

-0.68

15

100

1.8

65

TYP

2.35

48

700

0.1

6

1.2

+0.8

0

-1

-2

0.3

0.28

0.33

0.18

0.20

1.25

-0.52

40

0.1

0

16.7

2

100

MAX

5.5

2.55

80

1

9

2.7

+2.0

UNITS

V

V

µA

µA

mA

µA

%

0.45

0.30

1.65

-0.37

65

1.4

10

%/V

Ω

Ω

A

A

mA

ARMS

µA

%

%

17.3

2.2

MHz

150

kΩ

2 _______________________________________________________________________________________

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