參數(shù)資料
型號: MAX1896
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: 1.4MHz SOT23 Current-Mode Step-Up DC-DC Converter
中文描述: 1.4MHz、SOT23封裝、電流模式升壓型DC-DC轉(zhuǎn)換器
文件頁數(shù): 9/10頁
文件大小: 755K
代理商: MAX1896
M
1.4MHz SOT23 Current-Mode
Step-Up DC-DC Converter
_______________________________________________________________________________________
9
Figure 2. Functional Diagram
GND
LX
IN
FB
4μA
N
ERROR
COMPARATOR
TRANSCONDUCTANCE
ERROR AMPLIFIER
ENABLE
COMPARATOR
SS
CLOCK
ENABLE
BIAS
SHDN
MAX1896
Σ
CURRENT
SENSE
CONTROL
AND DRIVER
LOGIC
SOFT-
START
SLOPE
COMPEN-
SATION
OSCILLATOR
1.24V
Figure 3. MAX1896 with Ceramic Output Capacitor and Feed-
forward Capacitor
LX
IN
V
IN
2.6V TO 5.5V
C
SS
33nF
C
OUT
10
μ
F
CERAMIC
10
μ
F
CERAMIC
0.1
μ
F
CERAMIC
D1
NIHON
EC10QSO2L
C
FF
100pF
L
10
μ
H
CD43-100
R2
12k
V
OUT
13V
R1
115k
R3
10k
GND
SHDN
FB
MAX1896
SS
ON/OFF
Figure 4. MAX1896 in an SEPIC Configuration
LX
IN
V
2.6V TO 5.5V
GND
V
OUT
SHDN
ON/OFF
FB
MAX1896
SS
R2
R1
C
OUT
L1
C1
L2
C2
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