參數(shù)資料
型號： MAX1765EUE
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 穩(wěn)壓器
英文描述： 800mA, Low-Noise, Step-Up DC-DC Converter with 500mA Linear Regulator
中文描述： 1.3 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 4.40 MM, EXPOSED PAD, TSSOP-16
文件頁數(shù)： 17/19頁
文件大小： 559K
代理商： MAX1765EUE
where I
LIM
is the peak inductor current limit, f
SW
is the
operating frequency (typically 1.2MHz), L is the induc-
tance of the chosen inductor, L
RESR
is the resistance of
the chosen inductor, R
NCH
and R
PCH
are the resis-
tances of the internal N-channel and P-channel,
respectively.
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
I
I
I
I
f
D
L
V
I
R
(
L
D
V
V
I
R
(
L
V
I
R
(
R
OUTMAX
,
LIM
RIPPLE
2
RIPPLE
SW
IN
LIM
NCH
ESR
OUT
IN
LIM
NCH
ESR
)
OUT
LIM
PCH
NCH
=
)
=
×
×
×
+
)
[
]
=
+
×
+
)
+
1
M
800mA, Low-Noise, Step-Up DC-DC Converter
with 500mA Linear Regulator
______________________________________________________________________________________
17
Figure 9. Soft-Start, Maximum Current Limit
C
SS
R
SS
I
LIM
= 1.25A
t
SS
=
R
SS
C
SS
500k
<
R
SS
<
1M
MAX1765
REF
ISET
0.22
μ
F
Figure 8. Soft-Start, Reduced Current Limit
C
SS
MAX1765
REF
ISET
0.22
μ
F
R
SS1
R
SS2
I
LIM
= 1.25A
t
SS
= (
R
SS1
||
R
SS2
)
C
SS
(
)
+
R
SS2
R
SS2
Table 3. Component Selection Guide
PRODUCTION
3.3
μ
H INDUCTORS
CAPACITORS
SCHOTTKY DIODES
Surface Mount
Coilcraft DS3316P
Coilcraft LPT3305
AVX TPS series
Kemet T510 series
Sanyo POSCAP series
Motorola MBR0520L
Nihon EP10QY03
Table 4. Component Suppliers
SUPPLIER
AVX
Coilcraft
Kemet
COUNTRY
USA
USA
USA
PHONE
843-448-9411
847-639-6400
810-287-2536
408-629-4789
81-45-474-7030
847-956-0666
81-3-3607-3302
USA
Japan
USA
Japan
Motorola
Sumida
Note:
Please indicate that you are using the MAX1765 when
contacting these component suppliers.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1765EUE+ 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EUE+T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EUE-T 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1765EVKIT 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Evaluation Kit for the MAX1765 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX176ACPA 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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