參數(shù)資料
型號: MAX761
廠商: Maxim Integrated Products, Inc.
元件分類: DC/DC變換器
英文描述: 12V/ or Adjustable, High-Efficiency, Low I Q , Step-Up DC-DC Converters(12V/可調,高效率,低IQ值,步升DC-DC變換器)
中文描述: 12V/15V或可調、高效率、低IQ、升壓型DC-DC轉換器
文件頁數(shù): 6/12頁
文件大小: 146K
代理商: MAX761
M
12V /15V or Adjustable, High-Effic ienc y,
Low I
Q
, Step-Up DC-DC Converters
6
_______________________________________________________________________________________
LOAD–TRANSIENT RESPONSE
A: I
LOAD
, (0mA to 200mA)
B: V
OUT
, AC COUPLED, 100mV/div
V
IN
= 5V, V
OUT
= 12V
5μs/div
200mA
0mA
A
B
_____________________________Typic al Operating Charac teristic s (c ontinued)
(Circuit of Figure 2, T
A
= +25°C, unless otherwise noted.)
LINE–TRANSIENT RESPONSE
A: V
IN
(4V to 6V)
B: V
OUT
, AC COUPLED, 20mV/div
I
OUT
= 50mA, V
OUT
= 12V
5ms/div
6V
4V
A
B
NAME
FUNCTION
LBO
Low-battery output is an open-drain output that goes low when LBI is less than 1.5V.
Connect to V+ through a pull-up resistor. Leave LBO floating if not used.
LBI
Input to the internal low-battery comparator. Tie to GND or V+ if not used.
PIN
1
2
FB
Feedback input. For fixed-output bootstrapped operation, connect FB to GND. For
adjustable-output bootstrapped operation, connect a resistor divider between V+, FB and
GND. For non-bootstrapped operation, there is no fixed-output option. Connect a resistor
divider network between V
OUT
, FB and GND. See Bootstrapped/Non-Bootstrapped
Modes section.
SHDN
Active-high TTL/CMOS logic-level input. In shutdown mode (SHDN = V+), the internal
switch is turned off and the output voltage equals V+ minus a diode drop (due to the DC
path from the input to the output). Tie to GND for normal operation.
REF
1.5V reference output that can source 100μA for external loads. Bypass with 0.1μF
or larger capacitor.
GND
Ground
3
4
LX
Drain of the internal N-channel FET. LX has an output resistance of 1
and a peak current
limit of 1A.
V+
Power-supply input. In bootstrapped mode, V+ is also the output voltage sense input.
5
6
7
8
______________________________________________________________Pin Desc ription
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相關代理商/技術參數(shù)
參數(shù)描述
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