- 您现在的位置：买卖IC网 > PDF目录13115 > MCP1623T-I/CHY (Microchip Technology)IC CONV PIC MICROCTRLR SOT-23-6 PDF资料下载
参数资料
| 型号： | MCP1623T-I/CHY |
| 厂商： | Microchip Technology |
| 文件页数： | 14/28页 |
| 文件大小： | 0K |
| 描述： | IC CONV PIC MICROCTRLR SOT-23-6 |
| 标准包装： | 1 |
| 应用： | 转换器，PIC? 微控制器 |
| 输入电压： | 0.8 V ~ 5.5 V |
| 输出数： | 1 |
| 输出电压： | 2 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-23-6 |
| 包装： | 标准包装 |
| 产品目录页面： | 669 (CN2011-ZH PDF) |
| 其它名称： | MCP1623T-I/CHYDKR |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
MCP1623/24
5.5
Inductor Selection
Peak current is the maximum or limit, and saturation
The MCP1623/24 is designed to be used with small
surface mount inductors; the inductance value can
range from 2.2 μH to 10 μH. An inductance value of
4.7 μH is recommended to achieve a good balance
between inductor size, converter load transient
response and minimized noise.
current typically specifies a point at which the
inductance has rolled off a percentage of the rated
value. This can range from a 20% to 40% reduction in
inductance. As inductance rolls off, the inductor ripple
current increases as does the peak switch current. It is
important to keep the inductance from rolling off too
much, causing switch current to reach the peak limit.
TABLE 5-2:
MCP1623/24 RECOMMENDED
INDUCTORS
5.6
Thermal Calculations
Part
Number
Value
(μH)
DCR
Ω (typ)
I SAT
(A)
Size
WxLxH (mm)
By calculating the power dissipation and applying the
package thermal resistance, ( θ JA ), the junction
Coilcraft ?
temperature is estimated. The maximum continuous
junction temperature rating for the MCP1623/24 is
ME3220
LPS3015
EPL3012
XPL2010
Coiltronics ?
SD3110
SD3112
SD3114
4.7
4.7
4.7
4.7
4.7
4.7
4.7
0.190
0.200
0.165
0.336
0.285
0.246
0.251
1.5
1.2
1.0
0.75
0.68
0.80
1.14
2.5x3.2x2.0
3.0x3.0x1.5
3.0x3.0x1.3
1.9x2.0x1.0
3.1x3.1x1.0
3.1x3.1x1.2
3.1x3.1x1.4
+125 o C.
To quickly estimate the internal power dissipation for
the switching boost regulator, an empirical calculation
using measured efficiency can be used. Given the
measured efficiency, the internal power dissipation is
EQUATION 5-3:
? ------------------------------- ? – ( V
Part
Number
Value
(μH)
DCR
Ω
(max)
I SAT
(A)
Size
WxLxH (mm)
V OUT × I OUT
? Efficiency ?
OUT × I OUT ) = P Dis
Wurth Elektronik ?
WE-TPC
Type TH
WE-TPC
4.7
4.7
0.200
0.105
0.8
0.90
2.8x2.8x1.35
3.8x3.8x1.65
The difference between the first term, input power, and
the second term, power delivered, is the internal
MCP1623/24 power dissipation. This is an estimate
Type S
assuming that most of the power lost is internal to the
WE-TPC
4.7
0.082
1.65
4.8x4.8x1.8
MCP1623/24 and not C IN , C OUT and the inductor.
Type M
There is some percentage of power lost in the boost
Part
Number
Value
(μH)
DCR
Ω
(max)
I SAT
(A)
Size
WxLxH (mm)
inductor, with very little loss in the input and output
capacitors. For a more accurate estimation of internal
power dissipation, subtract the I INRMS2 *L ESR power
dissipation.
Sumida ?
CMH23
CMD4D06
CDRH4D
4.7
4.7
4.7
0.537
0.216
0.09
0.70
0.75
0.800
2.3x2.3x1.0
3.5x4.3x0.8
4.6x4.6x1.5
EPCOS ?
B82462A2
4.7
0.084
2.00
6.0x6.0x2.5
472M000
B82462G4
4.7
0.04
1.8
6.3x6.3x3.0
472M
Several parameters are used to select the correct
inductor: maximum rated current, saturation current
and copper resistance (ESR). For boost converters, the
inductor current can be much higher than the output
current. The lower the inductor ESR, the higher the
efficiency of the converter, a common trade-off in size
versus efficiency.
DS41420C-page 14
? 2011 Microchip Technology Inc.
相关PDF资料 |
PDF描述 |
|---|---|
| GCB65DHFD | CONN CARDEDGE 130POS .050" SMD |
| VE-JWW-CZ-B1 | CONVERTER MOD DC/DC 5.5V 25W |
| VI-2WH-EW-B1 | CONVERTER MOD DC/DC 52V 100W |
| RSC17DRTS | CONN EDGECARD 34POS DIP .100 SLD |
| VE-JW0-CZ-B1 | CONVERTER MOD DC/DC 5V 25W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP1624 | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Voltage Input Boost Regulator for PIC? Microcontrollers |
| MCP1624-I/CH | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Voltage Input Boost Regulator for PIC? Microcontrollers |
| MCP1624-I/CHY | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Voltage Input Boost Regulator for PIC?? Microcontrollers |
| MCP1624-I/MC | 功能描述:开关变换器、稳压器与控制器 500kHz 150mA Syn Bst Output Disconn & PWM RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MCP1624T-I/CH | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:Low-Voltage Input Boost Regulator for PIC? Microcontrollers |
发布紧急采购，3分钟左右您将得到回复。