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L6997DTR PDF预览

L6997DTR

更新时间: 2024-11-25 22:25:35
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
23页 292K
描述
STEP DOWN CONTROLLER FOR LOW VOLTAGE OPERATIONS

L6997DTR 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:TSSOP包装说明:MO-153AC, TSSOP-20
针数:20Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.83Is Samacsys:N
其他特性:CAN ALSO OPERATE IN PFM MODE模拟集成电路 - 其他类型:SWITCHING CONTROLLER
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:3 V
标称输入电压:3.3 VJESD-30 代码:R-PDSO-G20
JESD-609代码:e0长度:6.5 mm
功能数量:1端子数量:20
最高工作温度:85 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP20,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH峰值回流温度(摄氏度):NOT SPECIFIED
认证状态:Not Qualified座面最大高度:1.2 mm
子类别:Switching Regulator or Controllers表面贴装:YES
切换器配置:PUSH-PULL温度等级:OTHER
端子面层:TIN LEAD端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4.4 mm
Base Number Matches:1

L6997DTR 数据手册

 浏览型号L6997DTR的Datasheet PDF文件第2页浏览型号L6997DTR的Datasheet PDF文件第3页浏览型号L6997DTR的Datasheet PDF文件第4页浏览型号L6997DTR的Datasheet PDF文件第5页浏览型号L6997DTR的Datasheet PDF文件第6页浏览型号L6997DTR的Datasheet PDF文件第7页 
L6997  
STEP DOWN CONTROLLER  
FOR LOW VOLTAGE OPERATIONS  
FEATURES  
FROM 3V TO 5.5V VCC RANGE.  
MINIMUM OUTPUT VOLTAGE AS LOW AS  
0.6V.  
1V TO 28V INPUT VOLTAGE RANGE.  
CONSTANT ON TIME TOPOLOGY ALLOWS.  
OPERATION WITH VERYLOW AND HIGH  
DUTY CYCLES.  
TSSOP20  
ORDERING NUMBERS: L6997D  
L6997DTR  
VERY FAST LOAD TRANSIENTS.  
0.6V, ±1% VREF.  
SELECTABLE SINKING MODE.  
LOSSLESS CURRENT LIMIT, AVAILABLE  
ALSO IN SINKING MODE  
DESCRIPTION  
The device is a high efficient solution for networking  
dc/dc modules and mobile application compatible  
with 3.3V bus and 5V bus.  
REMOTE SENSING.  
It's able to regulate an output voltage as low as 0.6V.  
OVP,UVP LATCHED PROTECTIONS.  
600µA TYP QUIESCENT CURRENT.  
POWER GOOD AND OVP SIGNALS.  
PULSE SKIPPING AT LIGTH LOADS.  
94% EFFICIENCY FROM 3.3V TO 2.5V.  
The constant on time topology assures fast load tran-  
sient response. The embedded voltage feed-forward  
provides nearly constant switching frequency opera-  
tion.  
An integrator can be introduced in the control loop to  
reduce the static output voltage error.  
APPLICATIONS  
The remote sensing improves the static and dynamic  
regulation, recovering the wires voltage drop.  
NETWORKING.  
DC/DC MODULES.  
DISTRIBUTED POWER.  
MOBILE APPLICATIONS.  
CHIP SET, CPU, DSP AND MEMORIES SUPPLY.  
Pulse skipping technique reduces power consump-  
tion at light loads. Drivers current capability allows  
output currents in excess of 20A.  
MINIMUM COMPONENT COUNT APPLICATION  
3.3V  
Rin2  
Rin1  
Cin  
OSC  
Dboot  
BOOT  
HGATE  
HS  
Cboot  
L
0.6V  
Cout  
PHASE  
PGOOD  
Ro1  
Ro2  
LGATE  
OVP  
LS  
DS  
L6997  
PGND  
GND  
ILIM  
GNDSENSE  
Rilim  
VSENSE  
SS  
Css  
INT  
VFB  
Vref  
SHDN  
Cvref  
April 2003  
1/23  

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