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参数资料
| 型号： | SP7661ER-L |
| 厂商： | Exar Corporation |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 3A 26DFN |
| 产品变化通告： | SP76(55,61)ER-L/(TR) Obsolescence 29/Jul/2011 |
| 标准包装： | 500 |
| 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 ~ 20.2 V |
| 输入电压： | 4.75 V ~ 22 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 600kHz |
| 电流 - 输出： | 3A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 26-VFDFN 裸露焊盘 |
| 包装： | 散装 |
| 供应商设备封装： | 26-DFN（7x4） |
SP7661
Wide Input Voltage Range
3A, 600kHz, Buck Regulator
Power Blox
TM
FEATURES
■ 4.75V to 22V Input Voltage Range using Single Supply
SP7661
DFN PACKAGE
7mm x 4mm (Option 2)
■ 3V to 22V Input Voltage Range using Dual Supply
■ ±1% 0.8V Reference
■ 3A Output Capability
■ Current Limiting using Inductor DCR
■ Built in Low R DS(ON) Power Switches
■ 600kHz Fixed Frequency Operation
■ Over Temperature Protection
■ Short Circuit Protection with Auto-Restart
■ Wide BW Amp Allows Type II or III Compensation
LX 26
LX 25
LX 24
LX 23
V CC 22
UV IN 21
GND 20
GND 19
BOTTOM VIEW
Heatsink Pad 1
Connect to Lx
Pin 27
Heatsink Pad 2
Connect to GND
1
2
3
4
5
6
7
8
P GND
P GND
P GND
P GND
GND
V FB
COMP
SS
■ Programmable Soft Start
■ Fast Transient Response
■ High Efficiency: Greater than 93% Possible
■ Nonsynchronous Start-Up into a Pre-Charged Output
■ Available in RoHS Compliant, Lead Free Packaging:
Small 7mm x 4mm DFN
V IN 18
BST 17
LX 16
LX 15
LX 14
Pin 28
Heatsink Pad 3
Connect to V INP
Pin 29
9 GND
10 ISN
11 ISP
12 SWN
13 VINP
TYPICAL APPLICATION CIRCUIT
■ U.S. Patent #6,922,041
DESCRIPTION
The SP7661 is a synchronous step-down switching regulator optimized for high efficiency. The part is designed
for use with a single 4.75V to 22V single supply or 3V to 22V input if an external Vcc is provided. The SP7661
provides a fully integrated buck regulator solution using a fixed 600kHz frequency, PWM voltage mode architecture.
Protection features include UVLO, thermal shutdown, output current limit and short circuit protection. The SP7661
is available in the space saving DFN package .
VIN
12V (9.6V-22V)
R
GND
C2
22uF
2
GND
CZ2 RZ2
6800pF 4.02k
CP 56pF
C
22uF
VFB
2
3
4
5
6
PGND
PGND
PGND
PGND
GND
VFB
U1
SP7661
LX
LX
LX
LX
LX
VCC
UVIN
26
25
24
23
22
2
NC
L1, Wurth -744311220
2.2uH, 14 mOhm, 7x7mm, 9A
R3 R4
5.11k 5.11k
C4 47nF
R9 61.9k
ISP ISN
CVCC
4.7uF
RZ3
400
CZ3
1500pF
VOUT
3.30V, 0-3A
3
C5
100uF
4
0k
CF1
100pF
CSS 47nF
7
8
9
COMP
SS
GND
GND
GND
VIN
20
19
18
VFB
R2
3.16k
0
ISN
BST
7
C9 6.8nF
ISN
ISP
LX
2
3
ISP
SWN
VIN
LX
LX
LX
LX
6
15
14
22nF
CBST
Rs2
SD101AWS
DBST
Cs2
1 Ohm
2.2nF
Mar -07 Rev N
SP766 Wide Input Voltage Range 3A, 600kHz Buck Regulator
? 2007 Sipex Corporation
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SP7661ERL/TR | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 3A, 600kHz, Buck Regulator |
| SP7661ER-L/TR | 功能描述:开关变换器、稳压器与控制器 WIDE INPUT VOLTAGE Range A600KHz RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| SP7662 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
| SP7662_07 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Wide Input Voltage Range 12A, 300kHz, Buck Regulator |
| SP7662_1 | 制造商:SIPEX 制造商全称:Sipex Corporation 功能描述:Evaluation Board Manual |
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