参数资料
型号: IR3475MTR1PBF
厂商: International Rectifier
文件页数: 5/22页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 10A PQFN
产品培训模块: SupIRBuck? Family and POL Design Tools Overview
标准包装: 750
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: 10A
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(4x5)
PIN ? DESCRIPTIONS ?
10A ? Highly ? Integrated ? SupIRBuck TM ?
IR3475 ?
PIN #
PIN NAME
I/O LEVEL
PIN DESCRIPTION
Forced ? Continuous ? Conduction ? Mode ? (CCM). ? Ground ? this ? pin ? to ? enable ? diode ?
1 ?
FCCM ?
3.3V ?
emulation ? mode ? or ? discontinuous ? conduction ? mode ? (DCM). ? Pull ? this ? pin ? to ? 3.3V ?
to ? operate ? in ? CCM ? under ? all ? load ? conditions. ?
2 ?
3 ?
4, ? 17 ?
5 ?
ISET ?
PGOOD ?
GND ?
FB ?
?
5V ?
Reference ?
3.3V ?
Connecting ? resistor ? to ? PHASE ? pin ? sets ? over ? current ? trip ? point. ?
Power ? good ? open ? drain ? output ? – ? pull ? up ? with ? a ? resistor ? to ? 3.3V ?
Bias ? return ? and ? signal ? reference. ?
Inverting ? input ? to ? PWM ? comparator, ? OVP ? / ? PGOOD ? sense. ?
Soft ? start/shutdown. ? This ? pin ? provides ? user ? programmable ? soft ‐ start ? function. ?
6 ?
SS ?
3.3V ?
Connect ? an ? external ? capacitor ? from ? this ? pin ? to ? GND ? to ? set ? the ? startup ? time ? of ? the ?
output ? voltage. ? The ? converter ? can ? be ? shutdown ? by ? pulling ? this ? pin ? below ? 0.3V. ?
7 ?
NC ?
‐?
‐?
For ? internal ? LDO. ? Bypass ? with ? a ? 1.0μF ? capacitor ? to ? AGND. ? A ? resistor ? in ? series ? with ?
8 ?
3VCBP ?
3.3V ?
the ? bypass ? capacitor ? may ? be ? required ? in ? single ‐ ground ? plane ? designs. ? Refer ? to ?
Layout ? Recommendation ? for ? details. ?
9 ?
10 ?
11 ?
12 ?
13 ?
14 ?
15 ?
16 ?
NC ?
VCC ?
PGND ?
PHASE ?
VIN ?
BOOT ?
FF ?
EN ?
‐?
5V ?
Reference ?
VIN ?
VIN ?
VIN ? + ? VCC ?
VIN ?
5V ?
‐?
VCC ? input. ? Gate ? drive ? supply. ? A ? minimum ? of ? 1.0μF ? ceramic ? capacitor ? is ? required. ?
Power ? return. ?
Phase ? node ? (or ? switching ? node) ? of ? MOSFET ? half ? bridge. ?
Input ? voltage ? for ? the ? system. ?
Bootstrapped ? gate ? drive ? supply ? – ? connect ? a ? capacitor ? to ? PHASE. ?
Input ? voltage ? feed ? forward ? – ? sets ? on ‐ time ? with ? a ? resistor ? to ? VIN. ?
Enable ? pin ? to ? turn ? on ? and ? off ? the ? device. ? Use ? two ? external ? resistors ? to ? set ? the ?
turn ? on ? threshold ? (see ? Electrical ? Specifications ) ? for ? input ? voltage ? monitoring. ??
??
?
5
March ? 27, ? 2013 ?? | ?? V2.2 ?? | ?? PD97602
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