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LM5117PSQE/NOPB 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
WQFN-24
描述:
具有模拟电流监视器的 5.5-65V 宽输入电压、电流模式同步降压控制器 24-WQFN -40 to 125
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3P4P5Hot
典型应用电路图在P1P22
原理图在P11P12P22
封装尺寸在P37P39P40
焊盘布局在P35
标记信息在P37P38
封装信息在P36P37P38P39P40
技术参数、封装参数在P5
应用领域在P1P22P43
电气规格在P6P7P8
导航目录
LM5117PSQE/NOPB数据手册
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V
OUT
SSRESRT
COMP
FB
RAMP
PGND
CSG
CS
LO
SW
HO
HB
VCCVIN
AGND
UVLO
VCCDIS
DEMB
CM
V
IN
V
OUT
SW
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LM5117
,
LM5117-Q1
SNVS698F –APRIL 2011–REVISED AUGUST 2015
LM5117/Q1 Wide Input Range Synchronous Buck Controller with Analog Current Monitor
1 Features 3 Description
The LM5117 is a synchronous buck controller
1
• LM5117-Q1 is Qualified for Automotive
intended for step-down regulator applications from a
Applications
high voltage or widely varying input supply. The
• AEC-Q100 Qualified With the Following Results:
control method is based upon current mode control
– Device Temperature Grade 1: -40°C to 125°C
utilizing an emulated current ramp. Current mode
control provides inherent line feed-forward, cycle-by-
Ambient Operating Temperature Range
cycle current limiting and ease of loop compensation.
• Emulated Peak Current Mode Control
The use of an emulated control ramp reduces noise
• Wide Operating Range from 5.5 V to 65 V
sensitivity of the pulse-width modulation circuit,
• Robust 3.3-A Peak Gate Drives
allowing reliable control of very small duty cycles
necessary in high input voltage applications.
• Adaptive Dead-Time Output Driver Control
• Free-Run or Synchronizable Clock up to 750 kHz
The operating frequency is programmable from 50
kHz to 750 kHz. The LM5117 drives external high-
• Optional Diode Emulation Mode
side and low-side NMOS power switches with
• Programmable Output from 0.8 V
adaptive dead-time control. A user-selectable diode
• Precision 1.5% Voltage Reference
emulation mode enables discontinuous mode
operation for improved efficiency at light load
• Analog Current Monitor
conditions. A high voltage bias regulator that allows
• Programmable Current Limit
external bias supply further improves efficiency. The
• Hiccup Mode Overcurrent Protection
LM5117’s unique analog telemetry feature provides
average output current information. Additional
• Programmable Soft-Start and Tracking
features include thermal shutdown, frequency
• Programmable Line Undervoltage Lockout
synchronization, hiccup mode current limit, and
• Programmable Switchover to External Bias Supply
adjustable line undervoltage lockout.
• Thermal Shutdown
Device Information
(1)
2 Applications
PART NUMBER PACKAGE BODY SIZE (NOM)
LM5117 HTSSOP (20) PWP 6.50 mm × 4.40 mm
• Automotive Infotainment
LM5117-Q1 WQFN (24) RTW 4.00 mm × 4.00 mm
• Industrial DC-DC Motor Drivers
(1) For all available packages, see the orderable addendum at
• Automotive USB Power
the end of the datasheet.
• Telecom Server
Typical Application
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
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