参数资料
| 型号： | EL7581IREZ-T7 |
| 厂商： | Intersil |
| 文件页数： | 15/17页 |
| 文件大小： | 0K |
| 描述： | IC CONV DC/DC 3-CHAN 20-HTSSOP |
| 标准包装： | 1,000 |
| 应用： | 转换器，TFT，LCD |
| 输入电压： | 2.7 V ~ 14 V |
| 输出数： | 2 |
| 输出电压： | 5 V ~ 17 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 20-TSSOP-EP |
| 包装： | 带卷 (TR) |
EL7581
Two-Stage Negative Charge Pump Circuit
V DDN
R ONP
DRVN
5V-17V
V LX
C CPN
V OFF
R ONN
V SSN
FBN
+
C CPN
C OUT2
C OUT2
R 21
V OFF ( max ) ≥ I OUT × 2 × ( R ONN + R ONP ) + 2 × V DIODE - I OUT × -------------------------------------------- - I OUT × ------------------------------------------------ -
0.5 × F × C 0.5 × F × C
V DDN - N × V LX ( max ) + N × ? 2 × V DIODE + I OUT × -------------------------------------------- + I OUT × ------------------------------------------------ ?
? 0.5 × F × C 0.5 × F × C ?
V OFF = – V REF × ----------
-
R 22
V REF
The maximum V OFF output voltage for N+1 stage charge pump is:
1 1
S CPN S OUT2
1 1
S CPN S OUT2
R 21 and R 22 determine V OFF output voltage:
R 21
R 22
Where V REF is nominal 1.310V.
Over-Temperature Protection
An internal temperature sensor continuously monitors the
die temperature. In the event that die temperature exceeds
the thermal trip point, the device will shut down and disable
itself. The upper and lower trip points are typically set to
130°C and 90°C respectively.
PCB Layout Guidelines
Careful layout is critical in the successful operation of the
application. The following layout guidelines are
recommended to achieve optimum performance.
? V REF and V DDB bypass capacitors should be placed next
to the pins.
? Place the boost converter diode and inductor close to the
LX pins.
? Place the boost converter output capacitor close to the
PGND pins.
? Locate feedback dividers close to their respected
feedback pins to avoid switching noise coupling into the
high impedance node.
? Place the charge pump feedback resistor network after the
diode and output capacitor node to avoid switching noise.
15
? Thermal pad needs to be connected to PGND pins
electrically, and it should be soldered to PCB with thermal
vias connecting to ground plane for maximum heat
dissipation.
? All low-side feedback resistors should be connected
directly to V SSB . V SSB should be connected to the power
ground close at one point only.
A demo board is available to illustrate the proper layout
implementation.
相关PDF资料 |
PDF描述 |
|---|---|
| LT3083EFE#PBF | IC REG LDO ADJ 3A 16-TSSOP |
| 2510-54K | INDUCTOR RF 18UH UNSHIELDED SMD |
| EL7581IREZ-T13 | IC CONV DC/DC 3-CHAN 20-HTSSOP |
| 2510-48K | INDUCTOR RF 10UH UNSHIELDED SMD |
| LT1175IQ#PBF | IC REG LDO NEG ADJ .5A DDPAK-5 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| EL7583 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3-Channel DC-DC Converter |
| EL7583_06 | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:3-Channel DC/DC Converter |
| EL7583IR | 功能描述:IC CONV DC/DC 3-CHAN 20-TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,000 系列:- 应用:电源，ICERA E400，E450 输入电压:4.1 V ~ 5.5 V 输出数:10 输出电压:可编程 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:42-WFBGA，WLCSP 供应商设备封装:42-WLP 包装:带卷 (TR) |
| EL7583IREZ | 功能描述:直流/直流开关转换器 EL7583IREZ 3 CH DC/D C CNVRTR RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| EL7583IREZ-T13 | 功能描述:直流/直流开关转换器 3 CH DC/DC CNVRTR RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。