参数资料
型号: IR3477MTRPBF
厂商: International Rectifier
文件页数: 1/21页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 15A PQFN
产品培训模块: SupIRBuck? Family and POL Design Tools Overview
标准包装: 4,000
系列: SupIRBuck™
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 0.5 V ~ 12 V
输入电压: 3 V ~ 27 V
频率 - 开关: 最高 750kHz
电流 - 输出: 15A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 16-VQFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 16-QFN(5x6)
15A ? Highly ? Integrated ? SupIRBuck TM ?
IR3477 ?
FEATURES ?
? Input ? Voltage ? Range: ? 3V ? to ? 27V ??
? Output ? Voltage ? Range: ? 0.5V ? to ? 12V ?
? Continuous ? 15A ? Load ? Capability ?
? Constant ? On ‐ Time ? Control ?
? Compensation ? Loop ? not ? Required ??
? Excellent ? Efficiency ? at ? Very ? Low ? Output ? Currents ?
? Programmable ? Switching ? Frequency ? and ? Soft ? Start ??
? Thermally ? Compensated ? Over ? Current ? Protection ?
? Power ? Good ? Output ??
? Precision ? Voltage ? Reference ? (0.5V, ? +/ ‐ 1%) ?
? Enable ? Input ? with ? Voltage ? Monitoring ? Capability ??
? Pre ‐ bias ? Start ? Up ?
? Thermal ? Shut ? Down ??
? Under/Over ? Voltage ? Fault ? Protection ??
? Forced ? Continuous ? Conduction ? Mode ? Option ?
? Small, ? Low ? Profile ? 5mm ? x ? 6mm ? QFN ? Package ?
DESCRIPTION ?
The ? IR3477 ? SupIRBuck TM ? is ? an ? easy ‐ to ‐ use, ? fully ? integrated ?
and ? highly ? efficient ? DC/DC ? voltage ? regulator. ? The ? onboard ?
constant ? on ? time ? hysteretic ? controller ? and ? MOSFETs ? make ?
IR3477 ? a ? space ‐ efficient ? solution ? that ? delivers ? up ? to ? 15A ? of ?
precisely ? controlled ? output ? voltage. ?
Programmable ? switching ? frequency, ? soft ? start, ? and ?
thermally ? compensated ? over ? current ? protection ? allows ? for ?
a ? very ? flexible ? solution ? suitable ? for ? many ? different ?
applications ? and ? an ? ideal ? choice ? for ? battery ? powered ?
applications. ?
Additional ? features ? include ? pre ‐ bias ? startup, ? very ? precise ?
0.5V ? reference, ? under/over ? voltage ? shutdown, ? thermal ?
protection, ? power ? good ? output, ? and ? enable ? input ? with ?
voltage ? monitoring ? capability. ?
APPLICATIONS ?
? Notebook ? and ? Desktop ? Computers ?
? Consumer ? Electronics ? – ? STB, ? LCD, ? TV, ? Printers ?
? 12V ? and ? 24V ? Distributed ? Power ? Systems ?
? General ? Purpose ? POL ? DC ‐ DC ? Converters ?
? Game ? Consoles ? and ? Graphics ? Cards ?
?
?
BASIC ? APPLICATION ?
EFFICIENCY ?
95%
85%
75%
65%
55%
45%
19VIN
12VIN
8VIN
?
0.01
0.1
1 10
Load Current (A)
100
?
Figure ? 1: ? IR3477 ? Basic ? Application ? Circuit ?
Figure ? 2: ? IR3477 ? Efficiency ?
1
March ? 27, ? 2013 ?? | ??? V2.5 ?? | ?? PD97604
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