參數(shù)資料
型號(hào): MAX879
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: Adjustable-Output, DC-DC Converters(3.3V/3V輸出,1.8V~6V輸入,步升/步降DC-DC變換器)
中文描述: 可調(diào)輸出,DC - DC轉(zhuǎn)換(3.3V/3V輸出,電壓為1.8V?6V的輸入,步升/步降型DC - DC變換器)
文件頁(yè)數(shù): 5/12頁(yè)
文件大小: 152K
代理商: MAX879
M
5V /3.3V /3V /Adjustable-Output,
S tep-Up/S tep-Down DC-DC Converters
_______________________________________________________________________________________
5
A: SWITCH VOLTAGE (LX PIN), 2V/div
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX877, V
IN
= 1.5V, I
OUT
= 100mA
SWITCHING WAVEFORMS—
CONTINUOUS CONDUCTION
A
B
C
0mA
5
μ
s/div
A: SWITCH VOLTAGE (LX PIN),
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX877, V
IN
= 3V, I
OUT
= 70mA
SWITCHING WAVEFORMS—
DISCONTINUOUS CONDUCTION
A
B
0mA
C
2
μ
s/div
A: SWITCH VOLTAGE (LX PIN),
B: INDUCTOR CURRENT, 0.5A/div
C: OUTPUT VOLTAGE RIPPLE, 50mV/div
MAX878, V
IN
= 6.0V, V
OUT
= 5.0V, I
OUT
= 210mA
STEP-DOWN CONVERSION
A
B
0mA
C
5
μ
s/div
A: SHDN, 2V/div
B: V
OUT
, 1V/div
V
OUT
= 3V
MAX878
START-UP TIME
GND
GND
10ms/div
A
B
A: INPUT VOLTAGE, 2V/div, 2V to 6V
B: OUTPUT VOLTAGE, 50mV/div
MAX878, I
OUT
= 100mA, V
OUT
= 3.3V
STEP-UP/STEP-DOWN
OPERATION
A
B
20ms/div
GND
____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 4, T
A
= +25°C, unless otherwise noted.)
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