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L6911E PDF预览

L6911E

更新时间: 2024-11-09 03:49:55
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 控制器
页数 文件大小 规格书
20页 148K
描述
5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

L6911E 技术参数

是否Rohs认证: 符合生命周期:Obsolete
零件包装代码:SOIC包装说明:SO-20
针数:20Reach Compliance Code:unknown
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.81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:12 V最小输入电压:5 V
标称输入电压:12 VJESD-30 代码:R-PDSO-G20
JESD-609代码:e0长度:12.8 mm
功能数量:1端子数量:20
最大输出电流:1.3 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP20,.4
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):NOT SPECIFIED认证状态:Not Qualified
座面最大高度:2.65 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:1000 kHz端子形式:GULL WING
端子节距:1.27 mm端子位置:DUAL
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:7.5 mm
Base Number Matches:1

L6911E 数据手册

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L6911E  
5 BIT PROGRAMMABLE STEP DOWN CONTROLLER  
WITH SYNCHRONOUS RECTIFICATION  
OPERATING SUPPLY IC VOLTAGE FROM 5V  
TO 12V BUSES  
UP TO 1.3A GATE CURRENT CAPABILITY  
TTL-COMPATIBLE 5 BIT PROGRAMMABLE  
OUTPUT COMPLIANT WITH VRM 8.5 :  
1.050V TO 1.825V WITH 0.025V BINARY  
STEPS  
SO-20  
VOLTAGE MODE PWM CONTROL  
EXCELLENT OUTPUT ACCURACY: ±1%  
OVER LINE AND TEMPERATURE  
VARIATIONS  
ORDERING NUMBERS: L6911E  
L6911ETR (Tape and Reel)  
VERY FAST LOAD TRANSIENT RESPONSE:  
FROM 0% TO 100% DUTY CYCLE  
POWER GOOD OUTPUT VOLTAGE  
DESCRIPTION  
The device is a power supply controller specifically  
designed to provide a high performance DC/DC con-  
version for high current microprocessors. A precise 5  
bit digital to analog converter (DAC) allows to adjust  
the output voltage from 1.050 to 1.825 with 25mV bi-  
nary steps.  
OVERVOLTAGE PROTECTION AND  
MONITOR  
OVERCURRENT PROTECTION REALIZED  
USING THE UPPER MOSFET’S RdsON  
200KHz INTERNAL OSCILLATOR  
The high precision internal reference assures the se-  
lected output voltage to be within ±1%. The high peak  
current gate drive affords to have fast switching to the  
external power mos providing low switching losses.  
OSCILLATOR EXTERNALLY ADJUSTABLE  
FROM 50KHz TO 1MHz  
SOFT START AND INHIBIT FUNCTIONS  
The device assures a fast protection against load  
overcurrent and load over-voltage. An external SCR  
is triggered to crowbar the input supply in case of  
hard overvoltage. An internal crowbar is also provid-  
ed turning on the low side mosfet as long as the over-  
voltage is detected. In case of over-current detection,  
the soft start capacitor is discharged an the system  
works in HICCUP mode.  
APPLICATIONS  
POWER SUPPLY FOR ADVANCED  
MICROPROCESSOR CORE  
DISTRIBUTED POWER SUPPLY  
BLOCK DIAGRAM  
Vcc 5V to12V  
Vin 5V to12V  
VCC  
OCSET  
PGOOD  
SS  
BOOT  
MONITOR and  
PROTECTION  
UGATE  
OVP  
RT  
Vo  
1.050V to 1.825V  
PHASE  
LGATE  
PGND  
GND  
OSC  
VD0  
VD1  
VD2  
VD3  
VD4  
-
D/A  
+
PWM  
+
VSEN  
VFB  
-
E/A  
D98IN957  
COMP  
November 2001  
1/20  

L6911E 替代型号

型号 品牌 替代类型 描述 数据表
E-L6911E STMICROELECTRONICS

完全替代

1.3A SWITCHING CONTROLLER, 1000kHz SWITCHING FREQ-MAX, PDSO20, ROHS COMPLIANT, SOP-20
L6911ETR STMICROELECTRONICS

功能相似

5 BIT PROGRAMMABLE STEP DOWN CONTROLLER WITH SYNCHRONOUS RECTIFICATION

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