- 您现在的位置：买卖IC网 > PDF目录15100 > IRU3138CSTR (International Rectifier)IC REG CTRLR BUCK PWM VM 14-SOIC PDF资料下载
参数资料
| 型号： | IRU3138CSTR |
| 厂商： | International Rectifier |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 14-SOIC |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 1 |
| 频率 - 最大： | 440kHz |
| 占空比： | 90% |
| 电源电压： | 4.25 V ~ 25 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： | 14-SOIC（0.154"，3.90mm 宽） |
| 包装： | 剪切带 (CT) |
| 其它名称： | *IRU3138CSTR IRU3138CSCT |
IRU3138
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
Error Amp
Fb Voltage Input Bias Current
Fb Voltage Input Bias Current
V P Voltage Range
I FB1
I FB2
SS=3V, Fb=1V
SS=0V, Fb=1V
0.7
0.1
50
1.5
μ A
μ A
V
Transconductance
GM
475
8 5 0
1100
μ mho
Output Drivers
Rise Time
Fall Time
Dead Band Time
Tr
T f
T DB
C LOAD =3000pF
C LOAD =3000pF
35
35
100
70
70
ns
ns
ns
Max Duty Cycle
Min Duty Cycle
Ton
Toff
Fb=0.7V, Freq=200KHz
Fb=1.5V
85
90
0
%
%
Note 1: Guaranteed by design, but not tested in production.
PIN DESCRIPTIONS
PIN#
PIN SYMBOL PIN DESCRIPTION
1
2
3
4
5
14
6
7
8
9
10
11
12
13
Fb
V P
V REF
V CC
NC
LDrv
Gnd
PGnd
HDrv
V C
Rt
Comp
SS / SD
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.
Reference Voltage.
This pin provides biasing for the internal blocks of the IC as well as power for the low side
driver. A minimum of 1 μ F, high frequency capacitor must be connected from this pin to
ground to provide peak drive current capability.
No Connection.
Output driver for the synchronous power MOSFET.
Analog ground for internal reference and control circuitry. Connect to PGnd with a short
trace.
This pin serves as the separate ground for MOSFET's drivers and should be connected to
system's ground plane. A high frequency capacitor (0.1 μ F to 1 μ F) must be connected
from V CC and V C pins to this pin for noise free operation.
Output driver for the high side power MOSFET. This pin should not go negative (below
ground), this may cause problem for the gate drive circuit. It can happen when the inductor
current goes negative (Source/Sink), soft-start at no load and for the fast load transient
from full load to no load. To prevent negative voltage at gate drive, a low forward voltage
drop diode might be connected between this pin and ground.
This pin is connected to a voltage that must be at least 4V higher than the bus voltage of
the switcher (assuming 5V threshold MOSFET) and powers the high side output driver. A
minimum of 1 μ F, high frequency capacitor must be connected from this pin to ground to
provide peak drive current capability.
The switching frequency can be Programmed between 200KHz and 400KHz by connect-
ing a resistor between Rt and Gnd. Floating the pin set the switching frequency to 200KHz
and grounding the pin set the switching frequency to 400KHz.
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 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 below 2.8V.
www.irf.com
3
相关PDF资料 |
PDF描述 |
|---|---|
| VE-2TM-EY-F3 | CONVERTER MOD DC/DC 10V 50W |
| VE-2TM-EY-F2 | CONVERTER MOD DC/DC 10V 50W |
| SLP103M035C4P3 | CAP ALUM 10000UF 35V 20% SNAP |
| VE-J6X-EW-F3 | CONVERTER MOD DC/DC 5.2V 100W |
| RBM36DRKH-S13 | CONN EDGECARD 72POS .156 EXTEND |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IRU3138CSTRPBF | 功能描述:电压模式 PWM 控制器 SYNC PWM CTRLLER 1A .8V 200 to 400kHz RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| IRU3146 | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER WITH CURRENT SHARING CIRCUITRY AND AUTO-RESTART |
| IRU3146CF | 制造商:International Rectifier 功能描述:DC DC CNTRLR DUAL-OUT SYNC BUCK/W/PWM 4.5V TO 16V 28TSSOP - Bulk |
| IRU3146CFTR | 功能描述:IC REG CTRLR BUCK PWM VM 28TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 特色产品:LM3753/54 Scalable 2-Phase Synchronous Buck Controllers 标准包装:1 系列:PowerWise® PWM 型:电压模式 输出数:1 频率 - 最大:1MHz 占空比:81% 电源电压:4.5 V ~ 18 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:-5°C ~ 125°C 封装/外壳:32-WFQFN 裸露焊盘 包装:Digi-Reel® 产品目录页面:1303 (CN2011-ZH PDF) 其它名称:LM3754SQDKR |
| IRU431AL | 制造商:IRF 制造商全称:International Rectifier 功能描述:LOW -VOLTAGE ADJUSTABLE PRECISION SHUNT REGULATOR |
发布紧急采购，3分钟左右您将得到回复。