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IR3622MPbF
www.irf.com
HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP
DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING
Description
The IR3622 IC integrates a dual synchronous
Buck controller, providing a high performance and
flexible solution. The IR3622 can be configured
as 2-independent outputs or as current shared
single output. The current share configuration is
ideal for high current applications.
The IR3622 enables output tracking and
sequencing of multiple rails in either ratiometric or
simultaneous fashion. The IR3622 features 180
o
out of phase operation which reduces the
required input/output capacitance and results in
lower number of capacitors. The switching
frequency is programmable from 200kHz to
600kHz per phase using one external resistor. In
addition, IR3622 also allows the switching
frequency to be synchronized to an external clock
signal.
Other key features offered by this device include
two independent programmable soft starts, two
independent power good outputs, precision
enable input, and under voltage lockout function.
The current limit is provided by sensing the lower
MOSFET's on-resistance for optimum cost and
performance. The output voltages are monitored
through dedicated pins to protect against open
circuit, and enhance faster response to an
overvoltage event.
Features
Dual Synchronous Controller with 180
o
Out of Phase Operation
Configurable to 2-Independent Outputs or Current
Shared Single Output
Output Voltage Tracking
Power up / down Sequencing
Current Sharing Using Inductor’s DCR
+/-1% Accurate Reference Voltage
Programmable Switching Frequency up 600kHz
Programmable Over Current Protection
Hiccup Current Limit Using MOSFET R
ds(on)
sensing
Latched Overvoltage Protection
Dual Programmable Soft-Starts
Programmable Enable Input
Pre-Bias Start-up
Dual Power Good Outputs
On Board Regulator
External Frequency Synchronization
Thermal Protection
32-Lead MLPQ Package
Applications
Embedded Telecom Systems
Distributed Point of Load Power Architectures
Computing Peripheral Voltage Regulators
Graphics Cards
General DC/DC Converters
Data Sheet No.PD
94722 revA
ORDERING INFORMATION
PKG PACKAGE PIN PARTS PARTS T&R
DESIG DESCRIPTION COUNT PER TUBE PER REEL ORIANTAION
M IR3622MPbF 32 73
M IR3622MTRPbF 32 --------
-------
3
000
Fig A
Simultaneous Powerup
Vo1
Vo2
Simultaneous Powerdown
Vo1
Vo2
Vo1
Vo2
Ratiometric Powerup
Vo1
Vo2
Ratiometric Powerdown
Vin
Vout1
PGnd1
LDrv1
HDrv1
LDrv2
HDrv2
Gnd
Comp2
Comp1
SS1 / SD
IR3622
Rt
SS2 / SD
PGnd2
OCSet2
OCSet1
Vin
Vout2
Vout1
Track
Seq
03/15/07
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IR3622MTRPBF | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ 2-PHASE Single or Dual SYNCH RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IR3623MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 32MLPQ RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
| IR3623MPBF_1 | 制造商:IRF 制造商全稱:International Rectifier 功能描述:HIGH FREQUENCY 2-PHASE, SINGLE OR DUAL OUTPUT SYNCHRONOUS STEP DOWN CONTROLLER WITH OUTPUT TRACKING AND SEQUENCING |
| IR3623MTRPBF | 功能描述:開(kāi)關(guān)變換器、穩(wěn)壓器與控制器 HI FREQ 2-PHASE Single or Dual SYNCH RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開(kāi)關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| IR3624MPBF | 功能描述:IC REG CTRLR BUCK PWM VM 10-MLPD RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 切換控制器 系列:- 標(biāo)準(zhǔn)包裝:4,000 系列:- PWM 型:電壓模式 輸出數(shù):1 頻率 - 最大:1.5MHz 占空比:66.7% 電源電壓:4.75 V ~ 5.25 V 降壓:是 升壓:無(wú) 回掃:無(wú) 反相:無(wú) 倍增器:無(wú) 除法器:無(wú) Cuk:無(wú) 隔離:無(wú) 工作溫度:-40°C ~ 85°C 封裝/外殼:40-VFQFN 裸露焊盤 包裝:帶卷 (TR) |
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