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参数资料
| 型号： | IR3853MTR1PBF |
| 厂商： | International Rectifier |
| 文件页数： | 4/35页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 4A PQFN17 |
| 产品培训模块： | SupIRBuck? Family and POL Design Tools Overview |
| 标准包装： | 1 |
| 系列： | SupIRBuck™ |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.7 V ~ 18.9 V |
| 输入电压： | 1.5 V ~ 21 V |
| PWM 型： | 电压模式 |
| 频率 - 开关： | 225kHz ~ 1.65MHz |
| 电流 - 输出： | 4A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 17-PowerVQFN |
| 包装： | 标准包装 |
| 供应商设备封装： | 17-PQFN（4x5） |
| 其它名称： | IR3853MTR1PBFDKR |
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PD-97516
IR3853MPbF
Pin Description
Pin
1
2
3
4;17
5
6
7
8
9
10
11
12
13
14
15
16
Rev 4.0
Name
Fb
Vsns
Comp
Gnd
Rt
SS/SD
OCSet
PGood
Sync
V CC
PGnd
SW
V IN
Boot
Enable
Seq
Description
Inverting input to the error amplifier. This pin is connected directly to the
output of the regulator via resistor divider to set the output voltage and
provide feedback to the error amplifier.
Sense pin for PGood
Output of error amplifier. An external resistor and capacitor network is
typically connected from this pin to Fb pin to provide loop compensation.
Signal ground for internal reference and control circuitry.
Set the switching frequency. Connect an external resistor from this pin to
Gnd to set the switching frequency. See Table 1 for Fs vs. Rt.
Soft start / shutdown. This pin provides user programmable soft-start
function. Connect an external capacitor from this pin to Gnd to set the
start up time of the output voltage. The converter can be shutdown by
pulling this pin below 0.3V.
Current limit set point. A resistor from this pin to SW pin will set the
current limit threshold.
Power Good status pin. Output is open drain. Connect a pull up resistor
from this pin to Vcc.
Sync pin, connect external system clock to synchronize multiple POLs
with the same frequency
This pin powers the internal IC and the drivers. A minimum of 1uF high
frequency capacitor must be connected from this pin to the power ground
(PGnd).
Power Ground. This pin serves as a separated ground for the MOSFET
drivers and should be connected to the system’s power ground plane.
Switch node. This pin is connected to the output inductor.
Input voltage connection pin.
Supply voltage for high side driver. A 0.1uF capacitor must be connected
from this pin to SW.
Enable pin to turn on and off the device. Use two external resistors to set
the turn on threshold (see Enable section). Connect this pin to Vcc if it is
not used.
Sequence pin. Use two external resistors to set Simultaneous Power up
sequencing. If this pin is not used connect to Vcc.
4
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IR3853MTR1PBF | 制造商:International Rectifier 功能描述:IC DC-DC CONV 1.5 MHz QFN-17 |
| IR3853MTRPBF | 功能描述:直流/直流开关调节器 4A SupIRBuck Reg 250-1500kHz, 1.5-21V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| IR3856MPBF | 制造商:IRF 制造商全称:International Rectifier 功能描述:HIGHLY EFFICIENT INTEGRATED 6A, SYNCHRONOUS BUCK REGULATOR |
| IR3856MTR1PBF | 功能描述:直流/直流开关调节器 6A SupIRBuck Reg 250-1500kHz, 1.5-21V RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| IR3856MTR1PBF-CUT TAPE | 制造商:IR 功能描述:IR3856MPbF Series 21V 6 A Highly Efficient Integrated Synchronous Buck Regulator |
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