- 您现在的位置：买卖IC网 > PDF目录15166 > ISL8120IRZ-T (Intersil)IC REG CTRLR BUCK PWM VM 32-QFN PDF资料下载
参数资料
| 型号： | ISL8120IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 17/33页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-QFN |
| 标准包装： | 6,000 |
| PWM 型： | 电压模式 |
| 输出数： | 2 |
| 频率 - 最大： | 1.5MHz |
| 占空比： | 90% |
| 电源电压： | 3 V ~ 22 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： | -40°C ~ 85°C |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页
ISL8120IR
Functional Pin Description
GND (Pin 33, Signal and Power Ground Pad)
All voltage levels are referenced to this pad.This pad
provides a return path for the low-side MOSFET drives and
internal power circuitries as well as all analog signals.
Connect this pad to the circuit ground using the shortest
possible path (more than 5 to 6 via to the internal ground
plane, placed on the soldering pad are recommended).
VIN (Pin 16, Internal Linear Regulator Input)
This pin should be tied directly to the input rail when using
the internal linear regulator. It provides power to the internal
linear drive circuitry. When used with an external 5V supply,
this pin should be tied directly to PVCC. The internal linear
device is protected against reverse bias generated by the
remaining charge of the decoupling capacitor at PVCC when
losing the input rail.
VCC (Pin 26, Analog Circuit Bias)
This pin provides power for the analog circuitry. A RC filter is
recommended between the connection of this pin to a 3V to
5.6V bias (typically PVCC). R is suggested to be a 5 Ω
resistor. And in 3.3V applications, the R could be shorted to
allow the low end input in concerns of the VCC falling
threshold. The VCC decoupling cap C is strongly
recommended to be as large as 10μF ceramic capacitor.
This pin can be powered either by the internal linear
regulator or by an external voltage source.
BOOT1, 2 (Pins 25, 17)
This pin provides the bootstrap bias for the high-side driver.
Internal bootstrap diodes connected to the PVCC pin provide
the necessary bootstrap charge. Its typical operational
voltage range is 2.5V to 5.6V.
UGATE1, 2 (Pin 24, 8)
These pins provide the drive for the high-side devices and
should be connected to the MOSFETs’ gates.
PHASE1, 2 (Pins 23,19)
Connect these pins to the source of the high-side MOSFETs
and the drain of the low-side MOSFETs. These pins
represent the return path for the high-side gate drives.
PVCC (Pin 21, Driver Bias Voltage)
This pin is the output of the internal series linear regulator. It
provides the bias for both low-side and high-side drives. Its
operational voltage range is 3V to 5.6V. The decoupling
ceramic capacitor in the PVCC pin is 10μF.
LGATE1, 2 (Pins 22, 20)
These pins provide the drive for the low-side devices and
should be connected to the MOSFETs’ gates.
FSYNC (Pin 5)
The oscillator switching frequency is adjusted by placing a
resistor (R FS ) from this pin to GND. The internal oscillator
17
will lock to an external frequency source if this pin is
connected to a switching square pulse waveform, typically
the CLKOUT input signal from another ISL8120IRZEC or an
external clock. The internal oscillator synchronizes with the
leading edge of the input signal.
EN/FF1, 2 (Pins 4, 6)
These are triple function pins. The input voltages to these
pins are compared with a precision 0.8V reference and
enable their digital soft-starts. By pulling this pin to voltage
lower than the threshold, the corresponding channel can be
disabled independently. Connecting these pins to input bus
through a voltage resistor divider can monitor the input
voltage. The undervoltage lockout and its hysteresis levels
can be programmed by setting the values of the resistor
dividers. The voltages on these pins are also fed into
controller to be used to adjust the amplitude of each
individual sawtooth independently.
Furthermore, during fault (such as overvoltage, overcurrent,
and over-temperature) conditions, these pins (EN/FF_) are
used to communicate the information to other cascaded ICs
by pulling low.
PGOOD (Pin 8)
Provides an open drain Power-Good signal when both
channels are within 9% of nominal output regulation point
with 4% hysteresis (13%/9%) and soft-start is complete.
PGOOD monitors the outputs (VMON1/2) of the internal
differential amplifiers.
ISEN1A, 2A (Pins 27, 15)
These pins are the positive inputs of the current sensing
amplifier. Together with ISEN1B,2B, these pins provide
r DS(ON) , DCR, or precision resistor current sensing.
ISEN1B, 2B (Pins 28, 14)
These pins are the negative inputs of the current sensing
amplifier. Together with the ISEN1A, 2A pins they provide
r DS(ON) , DCR, or precision resistor current sensing. Refer to
set-up.
ISET (Pin 2)
This pin sources an 15μA offset current plus the average
current of both channels in multiphase mode or only
Channel 1’s current in independent mode. The voltage
(V ISET ) set by an external resistor (R ISET ) represents the
average current level of the local active channel(s). V ISET is
compared with a 1V threshold for average overcurrent
protections. For full-scale current, R ISET should be
1V/120μA = 8.33k Ω . Typically 10k Ω is used for R SET .
FN6763.2
November 11, 2011
相关PDF资料 |
PDF描述 |
|---|---|
| CAT1027WI-30-GT3 | IC SUPERVISOR CPU 2K EEPR 8SOIC |
| VE-B5Z-EY-F4 | CONVERTER MOD DC/DC 2V 20W |
| VE-24F-EW-F1 | CONVERTER MOD DC/DC 72V 100W |
| RGM12DTKS | CONN EDGECARD 24POS DIP .156 SLD |
| HIP6311ACBZ | IC REG CTRLR BUCK PWM 20-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL8120IRZ-TEC | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL8120IRZ-TK | 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 切换控制器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- PWM 型:电流模式 输出数:1 频率 - 最大:275kHz 占空比:50% 电源电压:18 V ~ 110 V 降压:无 升压:无 回扫:无 反相:无 倍增器:无 除法器:无 Cuk:无 隔离:是 工作温度:-40°C ~ 85°C 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) |
| ISL8121 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers |
| ISL8121EVAL1 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3V to 20V, Two-Phase Buck PWM Controller with Integrated 4A MOSFET Drivers |
| ISL8121EVAL1Z | 制造商:Intersil Corporation 功能描述:- Bulk |
发布紧急采购，3分钟左右您将得到回复。