MAX8834Y 데이터 시트보기 (PDF) - Maxim Integrated

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MAX8834Y

Adaptive Step-Up Converters with 1.5A Flash Driver

Maxim Integrated 

MAX8834Y/MAX8834Z

Adaptive Step-Up Converters

with 1.5A Flash Driver

Typical Operating Characteristics (continued)

(Circuit of Figure 1, VIN = 3.6V, VOUT = 3.8V, VDD = 3.0V, TA = +25°C, unless otherwise noted.)

OUTPUT VOLTAGE ACCURACY

vs. TEMPERATURE

0.6

MAX8834Z, NO LOAD

VOUT = 5V

0.4

MAX8834Y, NO LOAD

0.2

0

MAX8834Y, IOUT = 250mA

-0.2

-0.4 MAX8834Z, IOUT = 250mA

-0.6

-40 -15

10

35

60

85

TEMPERATURE (°C)

INTERNAL OSCILLATOR FREQUENCY

vs. SUPPLY VOLTAGE

5

4

MAX8834Z

3

2

MAX8834Y

1

0

2.5 3.0 3.5 4.0 4.5 5.0 5.5

SUPPLY VOLTAGE (V)

STARTUP WAVEFORM

(MAX8834Y, VOUT = 5V)

MAX8834Y/Z toc11

VOUT

5V

2V/div

STARTUP WAVEFORM

(MAX8834Y, ADAPTIVE MODE)

MAX8834Y/Z toc12

VOUT

2V/div

VLX

ILX

VCOMP

VOUT

VLX

ILX

VCOMP

2V/div

VOUT = 5V

ILED1 = 31.25mA

500mA/div

1ms/div

1V/div

STARTUP WAVEFORM

(MAX8834Z, VOUT = 5V)

MAX8834Y/Z toc13

5V

2V/div

2V/div

VOUT = 5V

ILED1 = 31.25mA

500mA/div

1ms/div

1V/div

VLX

ILX

VCOMP

VOUT

VLX

ILX

VCOMP

2V/div

ADAPTIVE MODE

ILED1 = 31.25mA

500mA/div

1V/div

1ms/div

STARTUP WAVEFORM

(MAX8834Z, ADAPTIVE MODE)

MAX8834Y/Z toc14

2V/div

2V/div

ADAPTIVE MODE

ILED1 = 31.25mA 500mA/div

1ms/div

1V/div

Maxim Integrated

7

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