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.)

VOUT

VLX

ILX

VCOMP

SHUTDOWN WAVEFORM

(MAX8834Y, VOUT = 5V)

MAX8834Y/Z toc15

5V

2V/div

2V/div

VOUT = 5V

ILED1 = 31.25mA

500mA/div

1V/div

400µs/div

SHUTDOWN WAVEFORM

(MAX8834Y, ADAPTIVE MODE)

MAX8834Y/Z toc16

VOUT

2V/div

VLX

2V/div

ADAPTIVE MODE

ILX

ILED1 = 31.25mA 500mA/div

VCOMP

400µs/div

1V/div

VOUT

VLX

ILX

VCOMP

SHUTDOWN WAVEFORM

(MAX8834Z, VOUT = 5V)

MAX8834Y/Z toc17

5V

2V/div

2V/div

VOUT = 5V

ILED1 = 31.25mA

500mA/div

400µs/div

1V/div

SHUTDOWN WAVEFORM

(MAX8834Z, ADAPTIVE MODE)

MAX8834Y/Z toc18

VOUT

2V/div

VLX

2V/div

ILX

VCOMP

ADAPTIVE MODE

ILED1 = 31.25mA 500mA/div

400µs/div

1V/div

LIGHT-LOAD SWITCHING WAVEFORMS

(MAX8834Y)

MAX8834Y/Z toc19

LIGHT-LOAD SWITCHING WAVEFORMS

(MAX8834Z)

MAX8834Y/Z toc20

VLX

2V/div

VLX

2V/div

0V

0V

ILX

VOUT

AC RIPPLE

0mA

200mA/div

VOUT = 5V

IOUT = 16mA 20mV/div

400ns/div

ILX

VOUT

AC RIPPLE

0mA

200mA/div

VOUT = 5V

IOUT = 16mA

20mV/div

400ns/div

8

Maxim Integrated

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