參數(shù)資料
型號(hào): MAX1800EHJ
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi): 穩(wěn)壓器
英文描述: Digital Camera Step-Up Power Supply
中文描述: 2 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PQFP32
封裝: 5 X 5 MM, 1 MM HEIGHT, TQFP-32
文件頁(yè)數(shù): 6/24頁(yè)
文件大小: 461K
代理商: MAX1800EHJ
M
Digital Camera Step-Up
Power Supply
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
INPUT
= 2.4V, T
A
= +25
°
C, unless otherwise noted.)
0
20
60
40
80
100
0.4
0.6
0.7
0.5
0.8
0.9
1.0
1.1
1.2
AUXILIARY CONTROLLER
MAXIMUM DUTY CYCLE vs. V
DCON
_
M
V
DCON
_ (V)
M
0
20
10
40
30
50
60
1
100
10
1000
10,000
FB_ TO COMP_ SMALL-SIGNAL OPEN-LOOP
FREQUENCY RESPONSE
M
FREQUENCY (kHz)
S
OSCILLATOR FREQUENCY vs. R
OSC
0
1
1000
100
10
1000
400
200
800
600
M
R
OSC
(k
)
O
C
OSC
= 470pF
C
OSC
= 220pF
C
OSC
= 100pF
C
OSC
= 47pF
LDO STARTUP RESPONSE
MAX1800 toc12
1.00 ms/div
INPUT
CURRENT
500mA/div
LDO
OUTPUT
VOLTAGE
2V/div
V
ONA
2V/div
0V
0V
0A
MAIN LOAD = 24
LDO LOAD = 8
0
20
60
40
80
100
0
400
200
600
800
1000
M
FREQUENCY (kHz)
D
AUXILIARY CONTROLLER DEFAULT
MAXIMUM DUTY CYCLE vs. FREQUENCY
C
OSC
= 470pF
MAIN OUTPUT STARTUP RESPONSE
MAX1800 toc11
1.00 ms/div
INPUT
CURRENT
1A/div
MAIN
OUTPUT
VOLTAGE
2V/div
V
ONM
2V/div
0V
0V
0A
MAIN LOAD = 24
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