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參數(shù)資料
| 型號(hào)： | MAX764 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters |
| 中文描述： | -5V/-12V/-15V或可調(diào)、高效率、低IQ、DC-DC反相器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大?。?/td> | 132K |
| 代理商： | MAX764 |
M
-5V /-12V /-15V or Adjustable,
High-Effic ienc y, Low I
Q
DC-DC Inverters
_______________________________________________________________________________________
7
CIRCUIT OF FIGURE 2, V+ = 5V, V
OUT
= -5V, I
LOAD
= 80mA
A: OUTPUT RIPPLE, 100mV/div
B: INDUCTOR CURRENT, 500mA/div
C: LX WAVEFORM, 10V/div
5
μ
s/div
DISCONTINUOUS CONDUCTION AT
HALF CURRENT LIMIT
A
B
0A
C
0V
CIRCUIT OF FIGURE 2, V+ = 5V, V
OUT
= -5V, I
LOAD
= 240mA
A: OUTPUT RIPPLE, 100mV/div
B: INDUCTOR CURRENT, 500mA/div
C: LX WAVEFORM, 10V/div
5
μ
s/div
CONTINUOUS CONDUCTION AT
FULL CURRENT LIMIT
A
B
0A
C
0V
______________________________________________________________Pin Desc ription
Ground
GND
5
Positive Power-Supply Input. Must be tied together.
Place a 0.1μF input bypass capacitor as close to
the V+ and GND pins as possible.
V+
6, 7
Drain of the Internal P-Channel Power MOSFET. LX has a peak current limit of 0.75A.
LX
8
1.5V Reference Output that can source 100μA for external loads. Bypass to ground with a 0.1μF capacitor.
REF
4
Active-High Shutdown Input. With SHDN high, the part is in shutdown mode and the supply current is less
than 5μA. Connect to ground for normal operation.
SHDN
3
PIN
Feedback Input. Connect FB to REF to use the internal voltage divider for a preset output. For adjustable-
output operation, use an external voltage divider, as described in the section Setting the Output Voltage.
FB
2
Sense Input for Fixed-Output Operation (V
FB
= V
REF
). OUT must be connected to V
OUT
.
OUT
1
FUNCTION
NAME
____________________________Typic al Operating Charac teristic s (c ontinued)
(V+ = 5V, V
OUT
= -5V, T
A
= +25°C, unless otherwise noted.)
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