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参数资料
| 型号： | MAX1765EEE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 17/19页 |
| 文件大小： | 867K |
| 描述： | IC REG DL BST/LINEAR SYNC 16QSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 拓扑： | 升压（升压）同步（1），线性（LDO）（1） |
| 功能： | 任何功能 |
| 输出数： | 2 |
| 频率 - 开关： | 1MHz |
| 电压/电流 - 输出 1： | 2.5 V ~ 5.5 V，800mA |
| 电压/电流 - 输出 2： | 2.85V/可调，500mA |
| 带 LED 驱动器： | 无 |
| 带监控器： | 无 |
| 带序列发生器： | 无 |
| 电源电压： | 0.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
Applications Information
Use in a Typical Wireless
Phone Application
The MAX1765 is ideal for use in digital cordless and
PCS phones. The PA is connected directly to the step-
up converter output for maximum voltage swing and
power efficiency (Figure 10). The internal linear regula-
tor is used for postregulation to generate low-noise
power for DSP, control, and RF circuitry. The following
equations may be used to estimate the typical available
output current under conditions other than those listed
here:
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.
I
I
I
I D
I
f
D
L
V I R L
D
V V I R L
V I R R
OUTMAX LIM
RIPPLE
RIPPLE
SW
IN LIM NCH ESR
OUT IN LIM NCH ESR
OUT LIM PCH NCH
,
=
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
?/DIV>
( )
= ?nbsp ?nbsp ?nbsp +
(
)
[
]
=
+ ?nbsp +
(
)
+
(
)
2
1
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?/SPAN> < R
SS
< 1M?/DIV>
MAX1765
REF
ISET
0.22糉
Figure 8. Soft-Start, Reduced Current Limit
C
SS
MAX1765
REF
ISET
0.22糉
R
SS1
R
SS2
I
LIM
= 1.25A
t
SS
= (R
SS1
|| R
SS2
) C
SS
( )
R
SS2
R
SS1
+
R
SS2
Table 3. Component Selection Guide
PRODUCTION
3.3?/SPAN>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 COUNTRY
PHONE
AVX
USA
843-448-9411
Coilcraft
USA
847-639-6400
Kemet
USA
810-287-2536
USA
408-629-4789
Motorola
Japan
81-45-474-7030
USA
847-956-0666
Sumida
Japan
81-3-3607-3302
Note:Please indicate that you are using the MAX1765 when
contacting these component suppliers.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1765EEE+ | 功能描述:直流/直流开关转换器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1765EEE+T | 功能描述:直流/直流开关转换器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1765EEE-T | 功能描述:直流/直流开关转换器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1765EUE | 功能描述:直流/直流开关转换器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MAX1765EUE+ | 功能描述:直流/直流开关转换器 800mA Step-Up w/500mA Linear Reg RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
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