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LM34917ATL/NOPB.B中文资料
LM34917ATL/NOPB.B数据手册规格书PDF详情
1FEATURES
2• Functional Input Voltage Range: 8V to 33V
• DSBGA package
• Input Over-Voltage Shutdown at ≊35V
• Transient Capability to 50V
• Integrated N-Channel buck switch
• Valley current limit varies with VIN and VOUT to
reduce excessive inductor current
• On-time is reduced when in current limit
• Integrated start-up regulator
• No loop compensation required
• Ultra-Fast transient response
• Maximum switching frequency: 2 MHz
• Operating frequency remains nearly constant
with load current and input voltage variations
• Programmable soft-start
• Precision internal reference
• Adjustable output voltage
• Thermal shutdown
TYPICAL APPLICATIONS
• High Efficiency Point-Of-Load (POL) Regulator
• Non-Isolated Buck Regulator
• Secondary High Voltage Post Regulator
PACKAGE
• 12-Bump DSBGA Package
DESCRIPTION
The LM34917A Step-Down Switching Regulator features all the functions needed to implement a low
cost, efficient, buck bias regulator capable of
supplying at least 1.25A to the load. To reduce
excessive switch current due to the possibility of a
saturating inductor the valley current limit threshold
changes with input and output voltages, and the on-
time is reduced when current limit is detected. This
buck regulator contains an N-Channel Buck Switch,
and is available in the 12 pin DSBGA package. The constant on-time feedback regulation scheme
requires no loop compensation, results in fast load
transient response, and simplifies circuit
implementation. The operating frequency remains
constant with line and load variations due to the inverse relationship between the input voltage and
the on-time. The valley current limit results in a
smooth transition from constant voltage to constant
current mode when current limit is detected, reducing
the frequency and output voltage, without the use of
foldback. Additional features include: VCC under- voltage lock-out, input over-voltage shutdown,
thermal shutdown, gate drive under-voltage lock-out,
and maximum duty cycle limit.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
TI/德州仪器 |
23+ |
WFBGA12 |
50000 |
全新原装正品现货,支持订货 |
|||
TexasInstruments |
18+ |
ICREGBUCKADJ1.25A12-USMD |
6580 |
公司原装现货/欢迎来电咨询! |
|||
TI |
24+ |
12-DSBGA |
66800 |
原厂授权一级代理,专注汽车、医疗、工业、新能源! |
|||
Texas Instruments |
24+ |
12-μSMD (1.97x2.3) |
65200 |
一级代理/放心采购 |
|||
TI |
20+ |
BGA-12 |
1001 |
就找我吧!--邀您体验愉快问购元件! |
|||
Texas Instruments(德州仪器) |
22+ |
NA |
500000 |
万三科技,秉承原装,购芯无忧 |
|||
TI |
22+ |
12DSBGA |
9000 |
原厂渠道,现货配单 |
|||
TI |
23+ |
12DSBGA |
9000 |
原装正品,支持实单 |
|||
Texas Instruments(德州仪器) |
24+ |
TSOT-23-6 |
690000 |
代理渠道/支持实单/只做原装 |
|||
Texas Instruments |
25+ |
12-WFBGA |
9350 |
独立分销商 公司只做原装 诚心经营 免费试样正品保证 |
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Texas Instruments 美国德州仪器公司
德州仪器(Texas Instruments),简称TI,是全球领先的半导体公司,为现实世界的信号处理提供创新的数字信号处理(DSP)及模拟器件技术。除半导体业务外,还提供包括传感与控制、教育产品和数字光源处理解决方案。TI总部位于美国德克萨斯州的达拉斯,并在25多个国家设有制造、设计或销售机构。德州仪器是推动互联网时代不断发展的半导体引擎,作为实时技术的领导者,TI正在快速发展,在无线与宽带接入等大型市场及数码相机和数字音频等新兴市场方面,凭借性能卓越的半导体解决方案不断推动着互联网时代的前进步伐。TI预想未来世界的方方面面都渗透着TI产品的点点滴滴,每个电话、每次上网、拍的每张照片、听的每