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参数资料
| 型号： | IRU3048CFTR |
| 厂商： | International Rectifier |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 16TSSOP |
| 标准包装： | 1 |
| PWM 型： | 电压模式 |
| 输出数： | 3 |
| 频率 - 最大： | 220kHz |
| 占空比： | 90% |
| 电源电压： | 4.2 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： | 16-TSSOP（0.173"，4.40mm 宽） |
| 包装： | 剪切带 (CT) |
| 产品目录页面： | 1384 (CN2011-ZH PDF) |
| 其它名称： | *IRU3048CFTR IRU3048CFCT |
IRU3048
PARAMETER
SYM
TEST CONDITION
MIN
TYP
MAX
UNITS
Error Amp
Fb Voltage Input Bias Current
Fb Voltage Input Bias Current
Transconductance 1
Transconductance 2
I FB1
I FB2
g m1
g m2
SS=3V
SS=0V
-0.1
-64
400
600
m A
m A
m mho
m mho
Oscillator
Frequency
Ramp Amplitude
Freq
V RAMP
180
200
1.25
220
KHz
V PP
Output Drivers
Rise Time
Fall Time
Dead Band Time
Tr
Tf
T DB
C L =1500pF
C L =1500pF
50
35
50
150
100
100
250
ns
ns
ns
Max Duty Cycle
Min Duty Cycle
T ON
T OFF
Fb=1V, Freq=200KHz
Fb=1.5V
85
0
90
0
%
%
LDO Controller
Drive Current
I LDO
30
45
mA
Fb Voltage
Input Bias Current
V FB LDO
I LDO(BIAS)
1.225
1.25
0.5
1.275
2
V
m A
PIN DESCRIPTIONS
PIN#
1
2
16
3
4
5
12
6
11
7
10
8
9
13
14
15
PIN SYMBOL
Gnd
Fb2
Fb1
Comp1
Comp2
VcH2
VcH1
HDrv2
HDrv1
LDrv2
LDrv1
PGnd
Vcc
V OUT3
Fb3
SS
PIN DESCRIPTION
Ground pin.
Inverting inputs to the error amplifiers. These pins work as feedback inputs for each
channel, and are connected directly to the output of the switching regulator via a resistor
divider to set the output voltages.
Compensation pins for the error amplifiers.
Supply voltage for the high side output drivers. These are connected to voltages that
must be at least 4V higher than their bus voltages (assuming 5V threshold MOSFET). A
minimum of 1 m F high frequency capacitor must be connected from these pins to PGnd
pin to provide peak drive current capability.
Output driver for the high side power MOSFET. Connect a diode, such as BAT54 or
1N4148, from these pins to ground for the application 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.
Output driver for the synchronous power MOSFET.
This pin serves as the separate ground for MOSFET’s driver and should be connected to
the system’s ground plane.
Supply voltage for the internal blocks of the IC.
Driver signal for the LDO’s external transistor.
LDO’s feedback pin, connected to a resistor divider to set the output voltage of LDO.
Soft-Start pin. The converter can be shutdown by pulling this pin below 0.5V.
Rev. 1.7
09/12/02
www.irf.com
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IRU3048CS | 制造商:IRF 制造商全称:International Rectifier 功能描述:DUAL SYNCHRONOUS PWM CONTROLLER CIRCUITRY AND LDO CONTROLLER |
| IRU3048CSTR | 功能描述:IC REG CTRLR BUCK PWM VM 16-SOIC 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 |
| IRU3048CSTRPBF | 制造商:International Rectifier 功能描述:Dual Synchronous PWM Controller Circuitry and LDO Controller 16-Pin SOIC N T/R |
| IRU3055 | 制造商:IRF 制造商全称:International Rectifier 功能描述:5-BIT PROGRAMMABLE 3-PHASE SYNCHRONOUS BUCK CONTROLLER IC |
| IRU3055CQ | 制造商:IRF 制造商全称:International Rectifier 功能描述:5-BIT PROGRAMMABLE 3-PHASE SYNCHRONOUS BUCK CONTROLLER IC |
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