參數(shù)資料
型號(hào): MAX1774EEI
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: Dual, High-Efficiency, Step-Down Converter with Backup Battery Switchover
中文描述: 3 A SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PDSO28
封裝: 0.150 INCH, 0.025 INCH PITCH, QSOP-28
文件頁(yè)數(shù): 9/21頁(yè)
文件大小: 398K
代理商: MAX1774EEI
M
Dual, High-Effic ienc y, S tep-Down
Converter with Bac kup Battery S witc hover
_______________________________________________________________________________________
9
CORE SWITCHING WAVEFORMS
(HEAVY LOAD 500mA)
MAX1774-09
2
μ
s/div
4V
2V
LXC
0
20mV
0
-20mV
500mA
0
V
CORE
(AC-COUPLED)
20mV/div
L2
500mA/div
2V/div
CORE LINE-TRANSIENT RESPONSE
MAX1774-11
V
INC
2V/div
0
2V
4V
V
CORE
(AC-COUPLED)
50mV/div
1
μ
s/div
Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 1, V
IN
= +5V, V
INC
= +3.3V, T
A
= +25
°
C, unless otherwise noted.)
CORE SWITCHING WAVEFORMS
(LIGHT LOAD 50mA)
MAX1774-08
1
μ
s/div
3.3V
LX
2V/div
0
0
I
500mA/div
500mA
V
(AC-COUPLED)
20mV/div
MAIN LOAD-TRANSIENT RESPONSE
1000mA
500mA
0
I
MAIN
500mA/div
-20mV
V
(AC-COUPLED)
20mV/div
20mV
0
100
μ
s/div
MAIN LOAD-TRANSIENT RESPONSE
50mA TO500mA
MAX1774-13
500mA
0
V
(AC-COUPLED)
10mV/div
I
MAIN
500mA/div
10mV
0
-10mV
100
μ
s/div
MAIN LINE-TRANSIENT RESPONSE
MAX1774-10
12V
10V
5V
0
50mV
-50mV
V
5V/div
V
MAIN
(AC-COUPLED)
50mV/div
100
μ
s/div
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