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SP7653ERL/TR PDF预览

SP7653ERL/TR

更新时间： 2024-01-04 14:16:14
品牌 Logo 应用领域
西伯斯 - SIPEX 稳压器
页数 文件大小 规格书
15页 797K
描述
Wide Input Voltage Range, 1.3MHz, Buck Regulator

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SP7653ERL/TR 技术参数

是否Rohs认证：符合生命周期：Transferred
包装说明：7 X 4 MM, ROHS COMPLIANT, DFN-26Reach Compliance Code：unknown
风险等级：5.76Is Samacsys：N
其他特性：IT IS ALSO OPERATES IN 3 TO 28 VOLT模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：VOLTAGE-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：4.5 V
标称输入电压：5 VJESD-30 代码：R-XDSO-N26
JESD-609代码：e3长度：7 mm
湿度敏感等级：3功能数量：1
端子数量：26最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：5 A
封装主体材料：UNSPECIFIED封装代码：HVSON
封装形状：RECTANGULAR封装形式：SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：260认证状态：Not Qualified
座面最大高度：1 mm表面贴装：YES
切换器配置：BUCK最大切换频率：1300 kHz
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：DUAL处于峰值回流温度下的最长时间：40
宽度：4 mmBase Number Matches：1

SP7653ERL/TR 数据手册

 浏览型号SP7653ERL/TR的Datasheet PDF文件第1页浏览型号SP7653ERL/TR的Datasheet PDF文件第2页浏览型号SP7653ERL/TR的Datasheet PDF文件第3页浏览型号SP7653ERL/TR的Datasheet PDF文件第5页浏览型号SP7653ERL/TR的Datasheet PDF文件第6页浏览型号SP7653ERL/TR的Datasheet PDF文件第7页 
PIN DESCRIPTION  
Pin #  
Pin Name  
Description  
1-3  
4,8,19-21  
P
GND  
G
N
D
Groundconnectionforthesynchronousrectifier  
GroundPin.ThecontrolcircuitryoftheICandlowerpowerdriverare  
referencedtothispin.Returnseparatelyfromothergroundtracestothe(-)  
terminalofC  
O
UT  
.
FeedbackVoltageandShortCircuitDetectionpin.Itistheinvertinginputof  
theErrorAmplifierandservesastheoutputvoltagefeedbackpointforthe  
BuckConverter.Theoutputvoltageissensedandcanbeadjustedthrough  
anexternalresistordivider. WheneverV drops0.25Vbelowthepositive  
5
V
F
B
FB  
reference,ashortcircuitfaultisdetectedandtheICentershiccupmode.  
OutputoftheErrorAmplifier.Itisinternallyconnectedtotheinvertinginputof  
6
7
9
COMP  
UVIN  
SS  
thePWMcomparator. Anoptimalfiltercombinationischosenandconnected  
tothispinandeithergroundorV  
FB  
tostabilizethevoltagemodeloop.  
UVLOinputforVIN voltage.ConnectaresistordividerbetweenVIN andUVIN  
tosetminimumoperatingvoltage.  
SoftStart.ConnectanexternalcapacitorbetweenSSandGNDtosetthe  
softstartratebasedonthe10µAsourcecurrent.TheSSpinisheldlowviaa  
1mA(min)currentduringallfaultconditions.  
InputconnectiontothehighsideN-channelMOSFET.Placeadecoupling  
capacitorbetweenthispinandPGND.  
10-13  
V
IN  
14-16,23-26  
LX  
ConnectaninductorbetweenthispinandV  
OUT  
17  
N
C
NoConnect  
Highsidedriversupplypin. ConnectBSTtotheexternalboostdiodeand  
capacitorasshownintheTypicalApplicationCircuitonpage1. Highside  
driveris connectedbetweenBSTpinandSWNpin.  
18  
22  
BST  
Vcc  
Inputforexternal5Vbiassupply  
THEORY OF OPERATION  
General Overview  
The SP7653 is a fixed frequency, voltage mode,  
synchronousPWMregulatoroptimizedforhigh  
efficiency. The part has been designed to be  
especially attractive for high input voltages of  
2.5V to 20V.  
The SP7653 contains two unique control fea-  
tures that are very powerful in distributed appli-  
cations. First, asynchronous driver control is  
enabled during startup, to prohibit the low side  
switch from pulling down the output until the  
high side switch has attempted to turn on. Sec-  
ond, a 100% duty cycle timeout ensures that the  
low side switch is periodically enhanced during  
extended periods at 100% duty cycle. This guar-  
antees the synchronized refreshing of the Boost  
capacitor during very large duty cycle ratios.  
The heart of the SP7653 is a wide bandwidth  
transconductance amplifier designed to accom-  
modate Type II and Type III compensation  
schemes. Aprecision0.8Vreference, presenton  
the positive terminal of the error amplifier,  
permits the programming of the output voltage  
down to 0.8V via the VFB pin. The output of the  
error amplifier, COMP, compared to a 1.1V  
peak-to-peak ramp is responsible for trailing  
edge PWM control. This voltage ramp, and  
PWM control logic are governed by the internal  
oscillator that accurately sets the PWM fre-  
quency to 1.3MHz.  
The SP7653 also contains a number of valuable  
protection features. Programmable VIN UVLO  
allowstheusertosettheexactvalueatwhichthe  
conversion voltage can safely begin down con-  
version, and an internal VCC UVLO which en-  
sures that the controller itself has enough volt-  
age to operate properly. Other protection fea-  
Date: ꢀꢀ/20/06  
SP7653 Wide Input Voltage Range, ꢀ.3MHz, Buck Regulator  
© Copyright 2006 Sipex Corporation  
ꢁ
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