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MAX1765EUE 数据手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
稳压芯片
封装:
TSSOP-16
描述:
800mA，低噪声，升压型DC- DC转换器， 500mA线性稳压器 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator
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MAX1765EUE数据手册
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MAX1765
Table 5 lists the typical available output current when oper-
ating with one or more NiCd/NiMH cells or one Li+ cell.
Adding a Manual Power Reset
A momentary pushbutton switch can be used to turn
the MAX1765 on and off (Figure 11). ONA is pulled low
and ONB is pulled high to turn the device off. When the
momentary switch is pressed, ONB is pulled low and
the regulator turns on. The switch must be pressed
long enough for the microcontroller (µC) to exit reset
and drive ONA high. A small capacitor is added to help
debounce the switch. The µC issues a logic high to
ONA, which holds the device on, regardless of the
switch state. To turn the regulator off, press the switch
again, allowing the µC to read the switch status and
pull ONA low. When the switch is released, ONB is
pulled high.
800mA, Low-Noise, Step-Up DC-DC Converter
with 500mA Linear Regulator
18 ______________________________________________________________________________________
Table 5. Typical Available Output Current
NUMBER OF CELLS
INPUT VOLTAGE
(V)
OUTPUT VOLTAGE
(V)
OUTPUT CURRENT
(mA)
1 NiCd/NiMH 1.2 3.3 330
2.4 3.3 730
2 NiCd/NiMH
2.4 5.0 460
3 NiCd/NiMH or 1 Li+ 3.6 5.0 720
PA
RF
LX POUT
GND OUTL
CONTROL
INPUTS
μC
I/O
MAX1765
INL
μC
V
DD
I/O
ONA
ONB
POUT
I/O
0.1μF
ON/OFF
270k
270k
MAX1765
Figure 10. Typical Phone Application
Figure 11. Momentary Pushbutton On/Off Switch
Package Information
For the latest package outline information and land patterns
(footprints), go to www.maxim-ic.com/packages
. Note that a
“+”, “#”, or “-” in the package code indicates RoHS status only.
Package drawings may show a different suffix character, but
the drawing pertains to the package regardless of RoHS status.
PACKAGE
TYPE
PACKAGE
CODE
OUTLINE
NO.
LAND
PATTERN NO.
16 QSOP E16+1
21-0055 90-0167
16 QSOP-EP U16E+3
21-0108 90-0120
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