Rainbow-electronics MAX8620 Manual do Utilizador descarregar pdf (Página 2)

MAX8620Y

µPMIC for Microprocessors or DSPs

in Portable Equipment

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

IN1

= V

IN2

= +3.7V, C

= 10µF, C

= 0.01µF, T

= -40°C to +85°C, unless otherwise noted. Typical values are at T

= +25°C.)

(Note 1)

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.

IN1, IN2, PWR_ON, RESET, EN2, SEL1, SEL2,

HF_PWR, FB, BP to GND ..................................-0.3V to +6.0V

OUT1, OUT2 to GND .................................-0.3V to (V

IN1

+ 0.3V)

LX Current ......................................................................1.5A

RMS

Continuous Power Dissipation (T

= +70°C)

14-Pin TDFN (derate 18.2mW/°C above +70°C) .......1454mW

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

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Supply Voltage Range V

IN1

2.7 5.5 V

Shutdown Supply Current I

SHDN

IN1

= V

IN2

= 4.2V, PWR_ON = HF_PWR =

GND

5.5 10 µA

All outputs enabled, no load

115

140

Supply Current

IN1

+ I

IN2

OUT1

= V

OUT3

= 1.8V, I

OUT1

= I

OUT3

500µA, OUT2 disabled

430

µA

UNDERVOLTAGE LOCKOUT

IN1

= V

IN2

rising

2.70 2.85 3.05

UVLO Threshold V

UVLO

IN1

= V

IN2

falling

2.35

THERMAL PROTECTION

Thermal-Shutdown Threshold Temperature rising

+160

°C

Thermal-Shutdown Hysteresis 15 °C

REFERENCE (BP)

Reference Bypass Output

Voltage

0 ≤ I

≤ 1µA

1.231 1.250 1.269

LOGIC AND CONTROL INPUTS (PWR_ON, HF_PWR, EN2)

PWR_ON, HF_PWR, EN2 Input

Low Voltage

IN1

= V

IN2

= 2.7V to 4.2V (Note 2) 0.4 V

PWR_ON, HF_PWR, EN2 Input

High Voltage

IN1

= V

IN2

= 2.7V to 4.2V (Note 2)

1.44

Input Bias Current I

INB

PWR_ON

= V

HF_PWR

= V

EN2

= 0V or 5.5V -1 +1 µA

HF_PWR Timer t

From the rising edge of HF_PWR until the

one-shot timer expires (Figure 4)

1.05 1.31 1.46

LINEAR REGULATORS (OUT1, OUT2)

0°C to +85°C

-1.3 +1.8

LOAD

= 1mA, 3.7V ≤ V

≤ 5.5V

-40°C to +85°C

-1.5 +1.8

1mA ≤ I

LOAD

≤ 300mA

-1.2

OUT1, OUT2 Output-Voltage

Accuracy

OUT1

OUT2

LOAD

= 150mA 0

OUT1, OUT2 Output Current I

OUT_

300

OUT1, OUT2 Output Current Limit

LIM_

OUT_

= 0V

310 550

940 mA

OUT1, OUT2 Dropout Voltage V

LOAD

= 200mA, T

= +85°C (Note 3)

200

380 mV

1 2 3 4 5 6 7 ... 17 18

MAX8620Y 1

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