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参数资料
| 型号： | ISL9444IRZ-T |
| 厂商： | Intersil |
| 文件页数： | 2/24页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM CM 40-QFN |
| 标准包装： | 6,000 |
| PWM 型： | 电流模式 |
| 输出数： | 3 |
| 频率 - 最大： | 1.32MHz |
| 电源电压： | 4.5 V ~ 28 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： | 40-VFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
ISL9444
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
ISL9444IRZ
ISL9444CRZ
PART
MARKING
ISL9444 IRZ
ISL9444 CRZ
TEMP. RANGE
(°C)
-40 to +85
-0 to +85
PACKAGE
(Pb-Free)
40 Ld 5x5 QFN
40 Ld 5x5 QFN
PKG.
DWG. #
L40.5X5B
L40.5X5B
ISL9444EVAL1Z
Evaluation Board
NOTES:
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 ISL9444 . For more information on MSL please see techbrief TB363 .
Pin Configuration
ISL9444
(40 LD 5x5 QFN)
TOP VIEW
40 39 38 37 36 35 34 33 32 31
Pin Descriptions
PFO 1
PFI 2
EXTBIAS 3
VCC_5V 4
VIN 5
EN/SS1 6
FB1 7
OCSET1 8
RT 9
PGOOD1 10
11 12 13 14 15 16 17 18 19 20
30 CLKOUT
29 PGND
28 LGATE3
27 UGATE3
26 BOOT3
25 PHASE3
24 ISEN3
23 MODE/SYNC
22 EN3
21 TK/SS3
PIN
1
2
3
4
NAME
PFO
PFI
EXTBIAS
VCC_5V
FUNCTION
Output of the auxiliary power monitor. PFO goes high if the voltage on PFI is greater than 1.2V (typical). Otherwise the
PFO outputs low.
Input to the auxiliary power monitor. The internal threshold voltage is 1.2V (typical).
Input from an optional external 5V bias supply. There is an internal switch from this pin to VCC_5V. This switch closes and
supplies the IC power, bypassing the internal linear regulator, when voltage at EXTBIAS is higher than 4.7V (typ). Do not
allow voltage at the EXTBIAS pin to exceed VIN at any time.
Decouple this pin to ground with a small ceramic capacitor (0.1μF to 1μF) when it is in use, otherwise tie this pin to
ground. Do not float this pin.
Output of the internal 5V linear regulator. This output supplies bias for the IC, the low side gate drivers, and the external
boot circuitry for the high-side gate drivers. The VCC_5V pin must be always decoupled to power ground with a minimum
of 4.7μF ceramic capacitor, placed very close to the pin. Do not allow the voltage at VCC_5V to exceed VIN at any time.
2
FN7665.3
May 29, 2012
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL9444IRZ-T7A | 功能描述:软开关 PWM 控制器 ISL9444 TRIPLE STEP DWN PWM CONTRLR RoHS:否 制造商:Fairchild Semiconductor 输出端数量: 输出电流: 开关频率: 工作电源电压:30 V 电源电流: 最大工作温度:+ 105 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Reel |
| ISL9444IRZ-T7AS2750 | 制造商:Intersil Corporation 功能描述:ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 40 LD MLFP - Tape and Reel |
| ISL9444IRZ-TS2750 | 制造商:Intersil Corporation 功能描述:PB FREE. ISL9444 TRIPLE, STEP- DOWN PWM CONTROLLER IMVP-6. 4 - Tape and Reel |
| ISL9491AERZ | 功能描述:线性稳压器 - 标准 SING OUTPUT LNB SUPP VAGEG FOR SATELLITE RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
| ISL9491AERZ-T | 功能描述:线性稳压器 - 标准 SING OUTPUT LNB SUPP VAGEG FOR SATELLITE RoHS:否 制造商:STMicroelectronics 输出类型: 极性: 输出电压:1.8 V 输出电流:150 mA 负载调节: 最大输入电压:5.5 V 线路调整率: 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:SOT-323-5L |
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