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参数资料
| 型号： | SP7655EB |
| 厂商： | Exar Corporation |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | EVAL BOARD FOR SP7655 |
| 标准包装： | 1 |
| 系列： | * |
Power Blox
300kHz, Buck Regulator
SP7655
Wide Input Voltage Range, 8Amp
TM
2.5V to 28V Step Down Achieved Using Dual Input
Output Voltage down to 0.8V
8A Output Capability
Built in Low R DSON Power Switches (15 m typ)
Highly Integrated Design, Minimal Components
300 kHz Fixed Frequency Operation
UVLO Detects Both V CC and V IN
Over Temperature Protection
Short Circuit Protection with Auto-Restart
Wide BW Amp Allows Type II or III Compensation
Programmable Soft Start
Fast Transient Response
High Efficiency: Greater than 95% Possible
Non- synchronous Start-Up into a Pre-Charged Output
Lead Free, RoHS Compliant Package: Small 7mm x 4mm DFN
U.S. Patent #6,922,041
FEATURES
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P GND 1
P GND 2
P GND 3
GND 4
V FB 5
COMP 6
UVIN 7
GND 8
SS 9
V IN 10
V IN 11
V IN 12
V IN 13
SP7655
DFN PACKAGE
7mm x 4mm
TOP VIEW
Heatsink Pad 1
Connect to Lx
Heatsink Pad 2
Connect to GND
Heatsink Pad 3
Connect toVIN
26 LX
25 LX
24 LX
23 LX
2 2 V CC
21 GND
20 GND
19 GND
18 BST
17 NC
16 LX
15 LX
14 LX
TYPICAL APPLICATION CIRCUIT
DESCRIPTION
The SP7655 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed to be
especially attractive for dual supply, 12V or 24V distributed power systems stepped down with 5V used to power the
controller. This lower V CC voltage minimizes power dissipation in the part and is used to drive the top switch. The
SP7655 is designed to provide a fully integrated buck regulator solution using a fixed 300kHz frequency, PWM voltage
mode architecture. Protection features include UVLO, thermal shutdown and output short circuit protection. The
SP7655 is available in the space saving DFN package .
U1
CF1
100pF
CZ2 RZ2
1,000pF 15k ,1%
CP1
22pF
ENABLE
CSS
47nF
1
2
3
4
5
6
7
8
9
10
11
12
PGND
PGND
PGND
GND
VFB
COMP
UVIN
GND
SS
VIN
VIN
VIN
SP7655
LX
LX
LX
LX
VCC
GND
GND
GND
BST
NC
LX
LX
26
25
24
23
22
21
20
19
18
17
16
15
L1
2.2uH, Irate=8A
+5V
VCC
CVCC
2.2uF
DBST
SD101AWS
CBST
6,800pF
C3
47uF
6.3V
RZ3
7.15k
1%
CZ3
150pF
VOUT
3.30V
0-8A
R1
68.1k ,1%
RSET
21.5k ,1%
(note 2)
VIN
12V
C1
22uF
16V
C4
22uF
16V
13
VIN
f s=300Khz
LX
14
Notes:
1. U1 Bottom side layout should
have three contacts isolated from
GND
one another: Vin, SWNODE, and GND.
2. RSET=54.48/(Vout-0.8V) KOhms
Rev E: 3/2 /07
SP7655 Wide Input Voltage Range 8A, 300kHz, Buck Regulator
? 2007 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7655ER | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7655ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range, 8Amp 300kHz, Buck Regulator |
| SP7655ERL | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range, 8Amp 300kHz, Buck Regulator |
| SP7655ER-L | 功能描述:线性稳压器 - 标准 Buck Regulator RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| SP7655ERL/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range, 8Amp 300kHz, Buck Regulator |
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