MAX8570EUT Ver la hoja de datos (PDF) - Maxim Integrated

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MAX8570EUT

High-Efficiency LCD Boost with True Shutdown

Maxim Integrated 

High-Efficiency LCD Boost

with True Shutdown

ABSOLUTE MAXIMUM RATINGS

VCC, SHDN to GND ..................................................-0.3V to +6V

SW to GND .................................................-0.3V to (VCC + 0.3V)

FB to GND (MAX8570/MAX8571/

Continuous Power Dissipation (TA = +70°C)

µDFN (derate 4.5mW/°C above +70°C)....................357.8mW

SOT23-6 (derate 8.7mW/°C above +70°C)...............695.7mW

MAX8574)...............................................-0.3V to (VCC + 0.3V)

OUT to GND (MAX8572/MAX8573/MAX8575) .......-0.3V to +30V

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

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

LX to GND ..............................................................-0.3V to +30V

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

ILX, ICC ..............................................................................600mA

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

Soldering Temperature (reflow) .......................................+260°C

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

(VCC = V SHDN = 3.6V, SW open, VFB = 1.3V (MAX8570/MAX8571/MAX8574) or VOUT = 16V (MAX8572/MAX8573/MAX8575), TA =

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

PARAMETER

VCC Input Voltage Range

VCC Undervoltage Lockout

VCC Supply Current

VCC Shutdown Current

Line Regulation

Load Regulation

FB Regulation Voltage

FB Input Bias Current

OUT Regulation Voltage

OUT Input Bias Current

LX Voltage Range

LX Switch Current Limit (Note 2)

LX On-Resistance

LX Leakage Current

Maximum LX On-Time

Minimum LX Off-Time

Current-Limit Propagation Delay

SHDN Low Level (VIL)

SHDN High Level (VIH)

SHDN Leakage Current

CONDITIONS

MIN

2.70

VCC rising, 50mV typical hysteresis

2.33

SHDN = GND, VCC = 5.5V

TA = +25°C

TA = -40°C to +85°C

Circuit of Figure 3, VOUT = 15V, ILOAD = 5mA,

VCC = 2.7V to 5.5V

Circuit of Figure 3, VOUT = 15V, ILOAD = 0 to 5mA

TA = 0°C to +85°C

TA = -40°C to +85°C

TA = 0°C to +85°C

TA = -40°C to +85°C

VOUT = 15V

1.216

1.2137

-50

14.85

14.813

MAX8571/MAX8573

MAX8570/MAX8572

MAX8574/MAX8575

MAX8571/MAX8573/MAX8574/MAX8575, ILX = 100mA

MAX8570/MAX8572, ILX = 50mA

VLX = 28V

TA = +25°C

TA = -40°C to +85°C

VFB > 1V or VOUT > 12.2V

VFB = 0.25V or VOUT = 3.4V

0.217

0.088

0.425

8

0.8

4.0

2.7V ≤ VCC ≤ 5.5V

4.2V ≤ VCC ≤ 5.5V

1.5

2.7V ≤ VCC < 4.2V

1.4

-1

TYP

2.5

25

0.05

0.05

0.1

0.1

1.226

-4

15

2.4

0.241

0.101

0.484

0.9

1.5

0.01

0.05

11

1

5

55

MAX

5.50

2.65

35

1

1.236

1.2383

+50

15.15

15.187

4.4

28

0.267

0.108

0.540

1.5

2.4

2

14

1.2

6.0

0.7

+1

UNITS

V

V

µA

µA

%/V

%/mA

V

nA

V

µA

V

A

Ω

µA

µs

µs

ns

V

V

µA

2 _______________________________________________________________________________________

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