MAX8570EUT-T(2004) Ver la hoja de datos (PDF) - Maxim Integrated

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MAX8570EUT-T
(Rev.:2004)

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/

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

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

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

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

Continuous Power Dissipation (TA = +70°C)

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

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

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 = VSHDN = 3.6V, SW floating, 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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