參數(shù)資料
型號: MAX1994ETM
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers
中文描述: DUAL SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, CQCC48
封裝: 7 X 7 MM, 0.80 MM HEIGHT, THIN, QFN-48
文件頁數(shù): 18/49頁
文件大?。?/td> 983K
代理商: MAX1994ETM
M
Dual Step-Down Controllers Plus Linear-
Regulator Controller for Notebook Computers
18
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V+ = 12V, V
DD
= V
CC
= V
SKP1/
SDN
= V
SKP2/
SDN
= V
LIN/
SDN
= 5V; V
IN(LDO)
= 3.3V, V
OUT(BUCK1)
= 1.25V,
V
OUT(BUCK2)
= 2.5V; T
A
= +25
°
C, unless otherwise noted.)
BUCK1 SHUTDOWN WAVEFORM
(SKIP MODE, NO LOAD)
MAX1816 toc22
100
μ
s/div
B
A
C
10A
2V
5V
A: OUTPUT VOLTAGE, 1V/div
B: INDUCTOR CURRENT, 10A/div
C: SKP1/SDN SIGNAL, 5V/div
0
1V
0
0
-10A
BUCK1 SHUTDOWN WAVEFORM
(PWM MODE, I
OUT2
= 20A)
MAX1816 toc23
100
μ
s/div
B
A
C
10A
2V
5V
A: OUTPUT VOLTAGE, 1V/div
B: INDUCTOR CURRENT, 10A/div
C: SKP1/SDN SIGNAL, 5V/div
0
1V
0
0
20A
OUTPUT OFFSET
vs. OFS INPUT VOLTAGE
M
V
OFS
(V)
O
1.5
0.5
1.0
-100
0
100
200
-200
0
2.0
UNDEFINED
REGION
BUCK1 OUTPUT-VOLTAGE DISTRIBUTION
(V
OUT1
= 1.25V, SAMPLE SIZE = 55)
M
BUCK1 OUTPUT VOLTAGE (V)
S
1.250
10
20
30
0
1.248
1.252
1.249
1.251
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