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参数资料
| 型号： | SP7651ER-L/TR |
| 厂商： | Exar Corporation |
| 文件页数： | 1/15页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 26DFN |
| 标准包装： | 3,000 |
| 系列： | Power Blox™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 19 V |
| 输入电压： | 2.5 V ~ 20 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 900kHz |
| 电流 - 输出： | 3A |
| 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： | 26-VFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 26-DFN（7x4） |
| 其它名称： | SP7651ER-L/TR-ND |
Wide Input Voltage Range 3Amp
Solved by
TM
900kHz Buck Regulator
SP7651
? 2.5V to 20V Step Down Achieved Using Dual Input
? Output Voltage down to 0.8V
? Highly Integrated Design, Minimal Components LX Connect to Lx P GND
? 900 kHz Fixed Frequency Operation
GND
LX
? UVLO Detects Both V CC and V IN
V CC 22
? Over Temperature Protection GND COMP
? Short Circuit Protection with Auto-Restart
Connect to GND UVIN
GND
? Wide BW Amp Allows Type II or III Compensation GND
GND
Pin 28
? Programmable Soft Start
BST
? Fast Transient Response
V IN
NC
? High Efficiency: Greater than 92% Possible
V IN
LX
? Asynchronous Start-Up into a Pre-Charged Output
V IN
LX
? Small 7mm x 4mm DFN Package
Pin 29
V IN
14
LX
TYPICAL APPLICATION CIRCUIT
FEATURES
SP7651
DFN PACKAGE
7mm x 4mm
? 3A Output Capability (Up to 5A with Air Flow) LX 26 BOTTOM VIEW 1 P GND
? Built in Low R DSON Power FETs (40 m? typ) LX 25 Heatsink Pad 1 2 P GND
24 3
Pin 27
23 4
5 V FB
21 6
Heatsink Pad 2
20 7
19 8
18 9 SS
17 10
16 Heatsink Pad 3 11
Connect to V IN
15 12
13
? U.S. Patent #6,922,04
DESCRIPTION
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, 2V step down with 5V used to power the controller. This
lower V CC voltage minimizes power dissipation in the part. The SP765 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 SP765 is available in the space saving
7mm X 4mm DFN package .
So
VIN
12V
CF
00pF
CZ2 RZ2
,000pF 5k, 1%
CP
22pF
ENABLE
CSS
5nF
2
3
4
5
6
7
8
9
0
2
3
PGN D
PGN D
PGN D
GN D
VFB
COMP
UVIN
GN D
SS
VIN
VIN
VIN
VIN
U
SP7651
fs=900Khz
LX
LX
LX
LX
VCC
GN D
GN D
GN D
BST
NC
LX
LX
LX
26
25
24
23
22
2
20
9
8
7
6
5
4
L
4.7uH, Irate=3.87A
+5V
VCC
CVCC
2.2uF
DBST
SD101AWS
CBST
6800pF
C3
22uF
6.3V
RZ3
7. 5k ? ,
1%
CZ3
50pF
VOUT
3.3V
0-3A
R
68. k ? , %
RSET
2 .5k ? , %
(note 2)
GND
C
22uF
16V
Notes:
1. U1 Bottom-Side Layout should
have three contacts isolated from
one another: Vin, SWNODE, and GND.
2. RSET=54.48/(Vout-0.8V) (KOhm)
Rev J: 3/ 4/07
SP765 Wide Input Voltage Range 3A, 900kHz, Buck Regulator
? Copyright 2007 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7652 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 6A, 600kHz, Buck Regulator |
| SP7652_06 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 6A, 600kHz, Buck Regulator |
| SP7652EB | 功能描述:电源管理IC开发工具 Eval Board for SP7652 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 |
| SP7652ER | 制造商:Rochester Electronics LLC 功能描述: 制造商:Exar Corporation 功能描述: |
| SP7652ER/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 6A, 600kHz, Buck Regulator |
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