Rainbow-electronics MAX8737 Manual de usuario descargar pdf (Pagina 2)

MAX8737

Dual, Low-Voltage Linear Regulator Controllers

with External MOSFETs

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

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.

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

OUT1, OUT2 to GND................................................-0.3V to +6V

REFIN1, REFIN2, PGOOD1, PGOOD2, EN1,

EN2 to GND..........................................................-0.3V to +6V

DRV1, DRV2, CS1, CS2 to GND.................-0.3V to (V

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

16-Pin 4mm x 4mm Thin QFN (derated 25mW/°C

above +70°C).............................................................2000mW

Operating Temperature Range

MAX8737ETE...................................................-40°C to +85°C

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

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

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

ELECTRICAL CHARACTERISTICS

= 5V, EN_ = CS_ = V

, V

REFIN

= 1.0V, T

= 0°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX

UNITS

Supply Voltage Range V

4.75 5.50

Undervoltage Lockout

Threshold

Rising edge, 200mV hysteresis (typ) 4.1

4.35

4.6 V

Quiescent Supply Current I

EN1 = EN2 = V

0.5 1 mA

Shutdown Supply Current EN1 = EN2 = GND 0.1 5 µA

REFIN to OUT Offset Voltage V

OUT

_-5+5mV

OUT_ Input Bias Current I

OUT

_-1+1µA

DRIVERS

Output high; V

OUT

_ = V

REFIN

_ - 25mV,

LOAD

= 1mA

0.3

0.05

DRV_ Output Voltage Swing

(Note 1)

Output low; V

OUT

_ = V

REFIN

_ + 25mV,

LOAD

= 1mA

0.03

0.3

DRV_ Maximum Sourcing Current

OUT

_ = V

REFIN

_ - 25mV; V

DRV

= 3V 6 14 mA

DRV_ Maximum Sinking Current V

OUT

_ = V

REFIN

_ + 25mV; V

DRV

= 3V 6 14 mA

OUT_ to DRV_ Transconductance

(Large Signal)

MDRV

0.8 S

DRV_ Power-Supply Rejection

Ratio

10Hz < f < 10kHz, I

DRV

= 1mA, C

DRV

10nF

-80 dB

DRV_ Soft-Start Charging Current

SOFT

40 170

400

µA

REFERENCE INPUT

REFIN_ Voltage Range

REFIN

= 4.75V to 5.5V 0.5 2.5 V

REFIN_ Input Bias Current I

REFIN

_ = 0 to 2.5V

-100

-10

+100

FAULT PROTECTION

Thermal Shutdown Threshold T

SHDN

Hysteresis = 20°C

+125

°C

= 0°C to +85°C 7 10 13

Current-Limit Threshold V

ILIM

_ - V

OUT

= +85°C 7.5 10

12.5

CS_ Input Current -1 +1 µA

Linear Regulator UVP Threshold

(Slow)

UVP

(

SLOW

)

With respect to V

REFIN

; CS_ = V

72 80 88 %

1 2 3 4 5 6 7 ... 14 15

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Rainbow-electronics MAX8737 Manual de usuario Pagina 2

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