參數資料
型號: MAX776MJA
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 穩(wěn)壓器
英文描述: Triple 3-Input Positive-NAND Gates 14-CFP -55 to 125
中文描述: SWITCHING CONTROLLER, 300 kHz SWITCHING FREQ-MAX, CDIP8
封裝: 0.300 INCH, CERDIP-8
文件頁數: 8/16頁
文件大?。?/td> 163K
代理商: MAX776MJA
M
-5V/-12V/-15V or Adjustable,
High-Efficiency, Low I
Q
Inverting DC-DC Controllers
8
_______________________________________________________________________________________
______________________________________________________________Pin Desc ription
PIN
NAME
FUNCTION
1
OUT
2
FB
3
SHDN
4
REF
1.5V reference output that can source 100
μ
A. Bypass to ground with 0.1
μ
F.
5
V+
Positive power-supply input
6
CS
Noninverting input to the current-sense comparator. Typical trip level is 210mV (relative to V+).
7
EXT
The gate-drive output for an external P-channel power MOSFET. EXT swings from OUT to V+.
8
GND
Ground
The sense input for fixed-output operation (V
FB
= V
REF
). OUT is connected to the internal voltage divider,
and it is the negative supply input for the EXT driver.
Feedback input. When V
FB
= V
REF
, the output will be the factory preset value. For adjustable operation,
use an external voltage divider, as described in the Adjustable Output section.
Active-high shutdown input. With SHDN high, the part is in shutdown mode and the supply current is less
than 5
μ
A. Connect to GND for normal operation.
____________________________Typic al Operating Charac teristic s (c ontinued)
(T
A
= +25°C, unless otherwise noted.)
CIRCUIT OF FIGURE 2
V+ = 6V, V
OUT
= -5V
A: I
LOAD
, 30mA TO1A, 1A/div
B: V
OUT
, 100mV/div, AC-COUPLED
LOAD-TRANSIENT RESPONSE
100
μ
s/div
A
B
CIRCUIT OF FIGURE 2
V
OUT
= -5V, I
LOAD
= 1A
A: V+, 3V TO8V, 5V/div
B: V
OUT
, 100mV/div, AC-COUPLED
LINE-TRANSIENT RESPONSE
2ms/div
A
B
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