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参数资料
| 型号： | IRU3039CHTR |
| 厂商： | International Rectifier |
| 文件页数： | 4/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 20-MLPQ |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 400kHz |
| 占空比： | 88% |
| 电源电压： | 4.75 V ~ 20 V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | 0°C ~ 70°C |
| 封装/外壳： | 20-MLPQ |
| 包装： | 剪切带 (CT) |
| 其它名称： | *IRU3039CHTR IRU3039CHTRCT |
IRU3039(PbF)
PIN DESCRIPTIONS
PIN#
PIN SYMBOL PIN DESCRIPTION
15
16
17
18
19
20
2,3,5,
V OUT2
OCSet
SS / SD
Comp
Fb
V P
NC
Output of internal regulator. The output is protected for short circuit. A high frequency
capacitor is recommended to be connected from this pin to ground.
This pin is connected to the Drain of the lower MOSFET via an external resister and it
provides the positive sensing for the internal current sensing circuitry. The external resis-
tor programs the current limit threshold depending on the R DS(ON) of the power MOSFET.
An external capacitor can be placed in parallel with the programming resistor to provide
high frequency noise filtering.
This pin provides soft-start for the switching regulator. An internal current source charges
an external capacitor that is connected from this pin to ground which ramps up the output
of the switching regulator, preventing it from overshooting as well as limiting the input
current. The converter can be shutdown by pulling this pin down below 0.4V.
Compensation pin of the error amplifier. An external resistor and capacitor network is
typically connected from this pin to ground to provide loop compensation.
This pin is connected directly to the output of the switching regulator via resistor divider to
provide feedback to the Error amplifier.
Non-inverting input of error amplifier.
No connection.
11,13,14
BLOCK DIAGRAM
Vcc 4
Regulator
6V
15 V OUT2
V REF 1
0.8V
1.25V
0.2V
Bias
Generator
3V
1.25V
4V
POR
3V
Vc
0.2V
12 Rt
22uA
3.5V
10 Vc
SS / SD 17
POR
64uA Max
Rt
Ct
Oscillator
Enbl
S
9 HDrv
V P 20
25K
Error Amp
Error Comp
R
Q
Vcc
Fb 19
25K
Reset Dom
6 LDrv
Comp 18
OCSet 16
3V
28uA
OC Comp
0.4V
FbLo Comp
POR
7 PGnd
8 Gnd
Figure 2 - Simplified block diagram of the IRU3039.
4
www.irf.com
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相关代理商/技术参数 |
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|---|---|
| IRU3046 | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER |
| IRU3046CF | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER |
| IRU3046CFTR | 功能描述:IC REG CTRLR BUCK PWM VM 24TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 标准包装:75 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.3 V ~ 13.5 V 降压:是 升压:是 回扫:是 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:无 工作温度:0°C ~ 70°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:管件 产品目录页面:1051 (CN2011-ZH PDF) 其它名称:296-2543-5 |
| IRU3046CFTRPBF | 制造商:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER |
| IRU3047 | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND LDO CONTROLLER |
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