- 您现在的位置：买卖IC网 > PDF目录14237 > SP6654ER-L/TR (Exar Corporation)IC REG BUCK SYNC ADJ 0.8A 10DFN PDF资料下载
参数资料
| 型号： | SP6654ER-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 13/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 0.8A 10DFN |
| 标准包装： | 3,000 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1 V ~ 5.5 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-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 10-DFN（3x3） |
APPLICATION INFORMATION
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
Manufacturer/Part No.
ESR
RippleCurrent Size
Voltage
Capacitor Type
Manufacturer
( μ F)
? (max) (A) @ 45 ° C
LxW(mm) Ht. (mm)
(V)
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 SP6654 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
the typical 10 μ H inductor application on 100mA
is half the 200mA inductor current ripple), the
output ripple frequency will be fairly constant.
From the operations section, this maximum loop
frequency in continuous conduction mode is:
1 V OUT
* *
internal FB pin capacitance can form a low pass
K ON
V IN
filter with R F in parallel with R I . The formula for
R F with a given R I and output voltage is:
Data for loop frequency, as measured from
output voltage ripple frequency, can be found in
R F = (
V OUT
0.8V
- 1 ) ? R I
the typical performance curves.
Layout Considerations
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 SP6654
(as described in the operations section), 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 current ripple, (for
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 SP6654 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
between the SP6654 high frequency converter and
Date: 2/1/05
SP6654 High Efficiency 800mA Synchronous Buck Regulator
13
? Copyright 2005 Sipex Corporation
相关PDF资料 |
PDF描述 |
|---|---|
| MAX6864UK39D3L+T | IC MPU SUPERVISOR SOT23-5 |
| VE-JWY-CZ-F1 | CONVERTER MOD DC/DC 3.3V 16.5W |
| MAX6864UK39D2L+T | IC MPU SUPERVISOR SOT23-5 |
| PSU27030A | CAP ALUM 270UF 330V QC TERM |
| MAX6864UK39D1L+T | IC MPU SUPERVISOR SOT23-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| SP6654EU | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP6654EU/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 800mA Synchronous Buck Regulator |
| SP6654EU-L | 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 |
| SP6654EU-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 |
| SP6655 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator Ideal for portable designs powered with Li Ion battery |
发布紧急采购，3分钟左右您将得到回复。