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| 型號： | SP7651 |
| 英文描述： | Wide Input Voltage Range 3A, 900kHz, Buck Regulator |
| 中文描述： | 寬輸入電壓范圍第3A，900kHz的，降壓穩(wěn)壓器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 117K |
| 代理商： | SP7651 |
1
Date: 08/25/04
SP7651 Wide Input Voltage Range 3A, 900kHz, Buck Regulator Copyright 2004 Sipex Corporation
SP7651
FEATURES
■
2.5V to 20V Step Down Achieved Using Dual Input
■
Output Voltage down to 0.8V
■
3A Output Capability (Up to 5A with Air Flow)
■
Built in Low R
DSON
Power FETs (40 m
typ)
■
Highly Integrated Design, Minimal Components
■
900 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 92% Possible
■
Asynchronous Start-Up into a Pre-Charged Output
■
Small 7mm x 4mm DFN Package
Wide Input Voltage Range 3A, 900kHz, Buck Regulator
The SP7651 is a high voltage synchronous step-down switching regulator optimized for high efficiency. The part is
designed to be especially attractive for dual supply, 12V step down with 5V used to power the controller. This lower V
CC
voltage minimizes power dissipation in the part. The SP7651 is designed to provide a fully integrated buck regulator
solution using a fixed 900kHz frequency, PWM voltage mode architecture. Protection features include UVLO, thermal
shutdown and output short circuit protection. The SP7651 is available in the space saving 7mm X 4mm DFN package
.
Advanced
TYPICAL APPLICATION CIRCUIT
Now Available in Lead Free Packaging
DESCRIPTION
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TOP VIEW
Heatsink Pad 1
Connect to Lx
Heatsink pad 2
Connect to GND
Heatsink pad 3
Connect to VIN
P
GND
P
GND
GND
V
FB
COMP
UVIN
GND
SS
V
IN
LX
LX
LX
LX
V
CC
GND
GND
GND
BST
NC
LX
LX
LX
DFN PACKAGE
7mm x 4mm
SP7651
P
GND
V
IN
V
IN
V
IN
CBST
6800pF
L1
4.7uH, Irate=3.87A
C1
22uF
16V
2.2uF
U1
SP7651
PGND
1
PGND
2
PGND
3
GND
4
VFB
5
COMP
6
UVIN
7
GND
8
SS
9
VIN
10
VIN
11
VIN
12
VIN
13
LX
14
LX
15
LX
16
NC
17
BST
18
GND
19
GND
20
GND
21
VCC
22
LX
23
LX
24
LX
25
LX
26
DBST
CSS
15nF
CP1
22pF
3.3V
0-3A
R1
68.1k,1%
RSET
(note 2)
GND
C3
6.3V
1. U1 Bottom-Side Layout should
has three contacts isolated from
one another Vin SWNODE and GND
2. RSET=54.48/(Vout-0.8V) (KOhm)
12V
VIN
SD101AWS
VOUT
7.15k,1%
CZ3
150pF
CZ2
1,000pF
RZ2
15k,1%
100pF
fs=900Khz
+5V VCC
ENABLE
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SP7652 | Wide Input Voltage Range 6A, 600kHz, Buck Regulator |
| SP7652EB | Evaluation Board Manual |
| SP7652EU | Evaluation Board Manual |
| SP7653 | Wide Input Voltage Range, 1.3MHz,Buck Regulator |
| SP7653ER | Wide Input Voltage Range, 1.3MHz,Buck Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SP7651_06 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7651_07 | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input Voltage Range 3Amp 900kHz Buck Regulator |
| SP7651EB | 功能描述:電源管理IC開發(fā)工具 Wide In Volt Range 3A 900kHz Buck Reg RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| SP7651ER | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7651ER/TR | 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:Wide Input Voltage Range 3A, 900kHz, Buck Regulator |
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