参数资料
| 型号： | ISL8126IRZ |
| 厂商： | Intersil |
| 文件页数： | 4/39页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-QFN |
| 标准包装： | 60 |
| 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 ~ 5.6 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： | 管件 |
第1页第2页第3页当前第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页第34页第35页第36页第37页第38页第39页
ISL8126
Functional Pin Descriptions (Continued)
PIN
NUMBER
29, 13
28, 14
27, 15
16
25, 17
24, 18
23, 19
22, 20
21
26
33
SYMBOL
VSEN1+, VSEN2+
ISEN1B, ISEN2B
ISEN1A, ISEN2A
VIN
BOOT1, BOOT2
UGATE1, UGATE2
PHASE1, PHASE2
LGATE1, LGATE2
PVCC
VCC
GND
DESCRIPTION
These pins are the positive inputs of the standard unity gain operational amplifier for differential remote
sense for the corresponding channel (Channels 1 and 2), and should be connected to the positive rail of the
load. These pins can also provide precision output voltage trimming capability by pulling a resistor from
this pin to the positive rail of the load (trimming down) or the return (typical VSEN1-, VSEN2- pins) of the
load (trimming up). By setting the resistor divider connected from the output voltage to the input of the
differential amplifier, the desired output voltage can be programmed. To minimize the system accuracy
error introduced by the input impedance of the differential amplifier, a resistor below 1k Ω is recommended
to be used for the lower leg (ROS) of the feedback resistor divider.
The typical input impedance of VSEN+ with respect to VSEN- is 500k Ω . With VSEN2- pulled within 400mV
of VCC, the corresponding error amplifier is disabled and VSEN2+ is one of the two pins to determine the
relative phase relationship between the internal clock of both channels and the CLKOUT signal. See Table 2
These pins are the inverting (-) inputs of the current sensing amplifiers to provide r DS(ON) , DCR, or precision
resistor current sensing together with the ISEN1A, ISEN2A pins. Refer to “2-Phase Operation with rDS(ON)
Sensing” on page 9 for r DS(ON) sensing set up and “2-Phase Operation with DCR Sensing” on page 8 for
DCR sensing set up.
These pins are the non-inverting (+) inputs of the current sensing amplifiers to provide r DS(ON) , DCR, or
precision resistor current sensing together with the ISEN1B, ISEN2B pins.
This pin is the input of the internal linear regulator. It should be tied directly to the input rail. 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. When used with an external 3.3V to 5V supply, this pin can be
tied directly to PVCC to bypass the internal LDO.
These pins provide the bootstrap biases for the high-side drivers. Internal bootstrap diodes connected to
the PVCC pin provide the necessary bootstrap charge. Its typical operational voltage range is 2.5V to 5.6V.
These pins provide the gate signals to drive the high-side devices and should be connected to the MOSFETs’
gates.
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.
These pins provide the drive for the low-side devices and should be connected to the MOSFETs’ gates.
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. A 10μF ceramic capacitor is required for
decoupling PVCC to ground.
This pin provides bias power for the analog circuitry. An 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 capacitor is strongly recommended to be a low ESR ceramic capacitor. This pin can be powered
either by the internal linear regulator or by an external voltage source.
The bottom pad is the signal and power ground plane. 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 with the shortest possible path (more than 5 to 6 vias to the
internal ground plane, placed on the soldering pad are recommended).
Ordering Information
PART NUMBER
TEMP RANGE
PACKAGE
PKG.
(Notes 1, 2, 3)
ISL8126CRZ
ISL8126IRZ
PART MARKING
ISL8126 CRZ
ISL8126 IRZ
(°C)
0 to +70
-40 to +85
(Pb-free)
32 Ld 5x5 QFN
32 Ld 5x5 QFN
DWG. #
L32.5x5B
L32.5x5B
NOTES:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte
tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil
Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL8126 . For more information on MSL please see techbrief TB363 .
4
FN7892.1
August 16, 2012
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相关代理商/技术参数 |
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| ISL8126IRZ-T | 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) |
| ISL8126IRZ-T7A | 制造商:Intersil Corporation 功能描述:SCALABLE 2-PHASE CONTROLLER W/INTEGRATED DRIVERS, IND, 32LD - Tape and Reel 制造商:Intersil Corporation 功能描述:IC REG CTRLR BUCK PWM VM 32-QFN |
| ISL8126IRZ-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) |
| ISL8128IAZ-TK | 制造商:Intersil Corporation 功能描述:PB-FREE SYNC BUCK PWM CONT. W/ 4.5V-28V |
| ISL8130 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:Advanced Single Universal Pulse-Width Modulation (PWM) Controller |
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