参数资料
| 型号： | ISL6444CAZ-T |
| 厂商： | Intersil |
| 文件页数： | 14/19页 |
| 文件大小： | 0K |
| 描述： | IC CONTROLLER DDR 28-QSOP |
| 标准包装： | 2,500 |
| 应用： | 控制器，DDR |
| 输入电压： | 4.5 V ~ 24 V |
| 输出数： | 2 |
| 输出电压： | 0.9 V ~ 5.5 V |
| 工作温度： | -10°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 28-SSOP/QSOP |
| 包装： | 带卷 (TR) |
ISL6444
ISL6444 DC/DC Converter Application
Circuits
Figures 9 and 10 show application circuits of a dual channel
DC/DC converter for a notebook PC.
The power supply in Figure 9 provides +V2.5S and +V1.8S
voltages for memory and graphic interface chipset from
+5.0V to +24VDC battery voltage.
Figure 10 shows the power supply that provides +V2.5S and
+V1.8S voltages for memory and graphic interface chipset
from +5.0V system rail.
Figure 11 shows an application circuit for a single-output split
input power supply with current sharing for advanced
graphic card applications.
Figure 12 and 13 show application circuits of a complete
power solution for DDR memory that becomes a preferred
choice in modern computers.
The power supply shown in Figure 12 generates +2.5V
VDDQ voltage from a battery. The +1.25V VTT termination
voltage tracks VDDQ/2 and is derived from +2.5V VDDQ. To
complete the DDR memory power requirements, the +1.25V
reference voltage is also provided. The PG2 pin serves as
an output for the reference voltage in this mode.
Figure 13 depicts the DDR solution in the case where the 5V
system rail is used as a primary voltage source.
For detailed information on the circuit, including a Bill-of-
Materials and circuit board description, see Application Note
AN9995. Also see Intersil’s web site (http://www.intersil.com)
for the latest information.
+5.0-24V IN
C1
1 μ F
+
C2
56 μ F
GND
+5.0V cc
CR1
C3
0.01 μ F
SOFT1
VIN
12 14
VCC
28
17
SOFT2
C4
0.01 μ F
CR2
+
C5
1 0μ F
+V2_5S
(3A)
Q1
1/2 IRF7313
C6
0.1 μ F
L1
10 μ H
R1
BOOT1
UGATE1
PHASE1
ISEN1
6
5
4
7
23
24
25
22
BOOT2
UGATE2
PHASE2
ISEN2
R2
Q3
1/2 IRF7313
C7
0.1 μ F
L2
10 μ H
+V1_8
(2A)
2k
2k
330 μ F
330 μ F
R3
+
C8
Q2
2/2 IRF7313
LGATE1
PGND1
2
3
ISL6444
27
26
LGATE2
PGND2
C9
Q4
2/2 IRF7313
+
R4
VSEN1
10
19
VSEN2
R5
R7
VOUT1
EN1
PG1
OCSET1
9
8
15
11
20
21
16
18
VOUT2
EN2
PG2/REF
OCSET2
R8
R6
1
GND
13
DDR
FIGURE 9. DUAL OUTPUT APPLICATION CIRCUIT FOR ONE-STEP CONVERSION
14
FN9069.3
April 12, 2007
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL6445EVAL3Z | 功能描述:EVALUATION BOARD FOR ISL6445 RoHS:是 类别:编程器，开发系统 >> 评估板 - DC/DC 与 AC/DC（离线）SMPS 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:True Shutdown™ 主要目的:DC/DC，步升 输出及类型:1，非隔离 功率 - 输出:- 输出电压:- 电流 - 输出:1A 输入电压:2.5 V ~ 5.5 V 稳压器拓扑结构:升压 频率 - 开关:3MHz 板类型:完全填充 已供物品:板 已用 IC / 零件:MAX8969 |
| ISL6445IAZ | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP 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) |
| ISL6445IAZS2695 | 制造商:Intersil Corporation 功能描述: |
| ISL6445IAZ-TK | 功能描述:IC REG CTRLR BUCK PWM CM 24-QSOP 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) |
| ISL6445IAZ-TKS2645 | 制造商:Intersil Corporation 功能描述:DC DC CNTRLR DUAL-OUT STEP DOWN 4.5V TO 24V 24QSOP W - Tape and Reel |
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