参数资料
| 型号： | SP6651AEU-L |
| 厂商： | Exar Corporation |
| 文件页数： | 12/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 10MSOP |
| 标准包装： | 50 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 电流 - 输出： | 800mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 10-MSOP |
| 其它名称： | 1016-1526-5 SP6651AEU-L-ND |
APPLICATION INFORMATION: Continued
INDUCTORS SURFACE MOUNT
Inductor Specification
Inductance
Manufacturer/Part No.
Series R ?
I SAT (A)
Size
Inductor Type
Manufacturer
( μ H)
LxW(mm) Ht. (mm)
Website
10
10
Sumida CDRH5D28-100
TDK RLF5018T-100MR94
0.048
0.056
1.30
0.94
5.7 x 5.5
5.6 x 5.2
3.0
2.0
Shielded Ferrite Core
Shielded Ferrite Core
sumida.com
tdk.com
10
10
Coilcraft DO1608C-103
Coilcraft LPO6013-103
0.160
0.300
1.10
0.70
6.6 x 4.5
6.0 x 5.4
2.9
1.3
Unshielded Ferrite Core coilcraft.com
Unshielded Ferrite Core coilcraft.com
6.8
6.8
Sumida CDRH5D28-6R8
TDK RLF5018T-6R8M1R1
0.081
0.47
1.12
1.10
4.7 x 4.5
5.6 x 5.2
3.0
2.0
Shielded Ferrite Core
Shielded Ferrite Core
sumida.com
tdk.com
6.8
6.8
Coilcraft DO1608C-682
Coilcraft LPO6013-103
0.130
0.200
1.20
0.60
6.6 x 4.5
6.0 x 5.4
2.9
1.3
Unshielded Ferrite Core coilcraft.com
Unshielded Ferrite Core coilcraft.com
CAPACITORS - SURFACE MOUNT
Capacitor Specification
Capacitance
( μ F)
Manufacturer/Part No.
ESR RippleCurrent Size
? (max) (A) @ 45 ° C
LxW(mm) Ht. (mm)
Voltage
(V)
Capacitor Type
Manufacturer
Website
22
22
47
47
TDK C3216X5R0J226M
SANYO 6APA22M
TDK C3225X5R0J46M
SANYO 6TPA47M
0.002
0.040
0.002
0.040
3.00
1.90
4.00
1.90
3.2 x 1.6
7.3 x 4.3
3.2 x 1.6
6.0 x 3.2
1.6
2.0
1.6
2.8
6.3
6.3
6.3
6.3
X5R Ceramic
POSCAP
X5R Ceramic
POSCAP
tdk.com
sanyovideo.com
tdk.com
sanyovideo.com
Note: Components highlighted in bold are those used on the SP6651A Evaluation Board.
Table 2 Component Selection
( V IN - V OUT )
F LP ≈
Output Voltage Program
The output voltage is programmed by the external
divider, as shown in the typical application circuit
on page 1. First pick a value for R I that is no larger
than 300K. Too large a value of R I will reduce the
AC voltage seen by the loop comparator since the
internal FB pin capacitance can form a low pass
current ripple, (for the typical 10 μ H inductor
application on 100mA is half the 200mA induc-
tor current ripple), the output ripple frequency
will be fairly constant. From the operations
section, this maximum loop frequency in con-
tinuous conduction mode is:
1 V OUT
* *
filter with R F in parallel with R I . The formula for
K ON
V IN
R F with a given R I and output voltage is:
Data for loop frequency, as measured from
R F = (
V OUT
0.8V
- 1 ) ? R I
output voltage ripple frequency, can be found in
the typical performance curves.
Output Voltage Ripple Frequency
An important consideration in a power supply
application is the frequency value of the output
ripple. Given the control technique of the
SP6651A (as described in the operations sec-
tion), the frequency of the output ripple will
vary when in light to moderate load in the
discontinuous or PFM mode. For moderate to
heavy loads greater than about 100mA inductor
Layout Considerations
Proper layout of the power and control circuits is
necessary in a switching power supply to obtain
good output regulation with stability and a mini-
mum of output noise. The SP6651A application
circuit can be made very small and reside close to
the IC for best performance and solution size, as
long as some layout techniques are taken into
consideration. To avoid excessive interference
Date: 5/25/04
SP6651A High Efficiency 800mA Synchronous Buck Regulator
12
? Copyright 2004 Sipex Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| SP6652EU-L | IC REG BUCK SYNC ADJ 1A 10MSOP |
| SP6654EU-L | IC REG BUCK SYNC ADJ 0.8A 10MSOP |
| SP6655ER-L/TR | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| SP6656ER3-L/TR | IC REG BUCK SYNC ADJ 0.4A 10DFN |
| SP6660EP-L | IC REG SWITCHD CAP DBL INV 8PDIP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6651AEU-L/TR | 功能描述:DC/DC 开关控制器 High Eff 800mA Synchronous RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| SP6651EB | 功能描述:电源管理IC开发工具 Eval Board for SP6651 Series RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| SP6652 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1A, High Efficiency, High Frequency Current Mode PWM Buck Regulator |
| SP6652_07 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:1A, High Efficiency, Fixed 1.4 MHz Current Mode PWM Buck Regulator |
| SP6652EB | 功能描述:电源管理IC开发工具 Eval Board for SP6652 Series RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
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