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参数资料
| 型号： | ISL8126CRZ-T7A |
| 厂商： | Intersil |
| 文件页数： | 2/39页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM VM 32-QFN |
| 标准包装： | 1 |
| 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： | 0°C ~ 70°C |
| 封装/外壳： | 32-VFQFN 裸露焊盘 |
| 包装： | 标准包装 |
| 其它名称： | ISL8126CRZ-T7ADKR |
第1页当前第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
Pin Configuration
ISL8126
(32 LD QFN)
TOP VIEW
32
31
30
29
28
27
26
25
COMP1 1
ISET 2
ISHARE 3
24 UGATE1
23 PHASE1
22 LGATE1
EN/VFF1 4
FSYNC 5
EN/VFF2 6
CLKOUT/REFIN 7
PGOOD 8
33
GND
21 PVCC
20 LGATE2
19 PHASE2
18 UGATE2
17 BOOT2
9
10
11
12
13
14
15
16
Functional Pin Descriptions
PIN
NUMBER
1, 9
2
3
SYMBOL
COMP1, COMP2
ISET
ISHARE
2
DESCRIPTION
These pins are the error amplifier outputs. They should be connected to FB1, FB2 pins through desired
compensation networks when both channels are operating independently. When VSEN1-, VSEN2- are
pulled within 400mV of VCC, the corresponding error amplifier is disabled and its output (COMP pin) is high
impedance. Thus, in multiphase operations, all other SLAVE phases’ COMP pins can tie to the MASTER
phase’s COMP1 pin (1st phase), which modulates each phase’s PWM pulse with a single voltage feedback
loop. While the error amplifier is not disabled, an independent compensation network is required for each
cascaded IC.
This pin along with ISHARE pin are used for multiple ISL8126 current sharing purposes. When in 2-phase
mode (VSEN2- pulled within 400mV of VCC), this pin sources a current which is a combination of 15μA
constant offset current, current correction current (more details on “Current Share Control in Multiphase
Single Output with Shared COMP Voltage” on page 31), and the average of both sensed channel currents.
When in Dual-output mode, this pin sources a current, which is a combination of 15μA constant offset
current, current correction current, and Channel 1’s sensed current. The current sourced out from this pin
and an external resistor (RISET) set the voltage at this pin (VISET). The RISET is recommended to be 10k Ω .
A noise decoupling capacitor less than 100pF can be added in parallel with the 10k Ω RISET.
In the single IC configuration (both 2-phase mode and dual-output mode), this pin can be tied to the ISHARE
pin.
This pin is used for current sharing purposes and is configured to the current share bus representing all
modules’ average current. When in 2-phase mode (VSEN2- pulled within 400mV of VCC), this pin sources
a current which is a combination of 15μA constant offset current and the average of both sensed channel
currents. When in Dual-output mode, this pin sources a current, which is a combination of 15μA constant
offset current and Channel 1’s sensed current.
The share bus (ISHARE pins connected together) voltage (VISHARE) set by an external resistor (RISHARE)
represents the average current level of all ISL8126 controller connected to the current share bus. The share
bus impedance RISHARE should be set as RISET/NCTRL (RISET divided by number of ISL8126 in current
sharing controllers).
There is a 1.2V threshold for average overcurrent protection on this pin. VISHARE is compared with a 1.2V
threshold for average overcurrent protections.
When the fault condition on Channel 1 is detected or EN/VFF1 is pulled below its POR, ISHARE is internally
pulled to VCC.
FN7892.1
August 16, 2012
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相关代理商/技术参数 |
参数描述 |
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| ISL8126IRZ | 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-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 |
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