参数资料
型号: ISL6551ABZ-T
厂商: Intersil
文件页数: 15/26页
文件大小: 0K
描述: IC REG CTRLR FLYBACK PWM 28-SOIC
标准包装: 1,000
PWM 型: 电流模式
输出数: 6
频率 - 最大: 1MHz
占空比: 50%
电源电压: 10.8 V ~ 13.2 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 105°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 带卷 (TR)
ISL6551
? Power Good (DCOK)
- DCOK pin is an open drain output capable of sinking
18K
15N
5mA. It is low when the output voltage is within the
UVOV window. The static regulation limit is ± 3%, while
the ± 5% is the dynamic regulation limit. It indicates
power good when the EAI is within -3% to +5% on the
VOUT
1K
EAI
EANI
R
-
+
C
EAO
rising edge and within +3% to -5% on the falling edge, as
shown in Figure 11.
EAI
1.10V
VOUT
+5%
+3%
EANI
-3%
1.00V
0.90V
1.05V
-5%
1.00V
EAI
0.95V
FIGURE 12. OUTPUT TRANSIENT REJECTION
DCOK
FAULT
? Thermal Pad (in QFN only)
FIGURE 11. UNDERVOLTAGE-OVERVOLTAGE WINDOW
- The DCOK comparator might not be triggered even
though the output voltage exceeds ± 5% limits at load
transients. This is because the feedback network of the
error amplifier filters out part of the transients and the EAI
only sees the remaining portion that is still within the limits,
as illustrated in Figure 12. The lower the “zero (1/RC)” of
the error amplifier, the larger the portion of the transient is
filtered out.
15
- In the QFN package, the pad underneath the center of
the IC is a “floating” thermal substrate. The PCB
“thermal land” design for this exposed die pad should
include thermal vias that drop down and connect to
one or more buried copper plane(s). This combination
of vias for vertical heat escape and buried planes for
heat spreading allows the QFN to achieve its full
thermal potential. This pad should be connected to a
low noise copper plane such as Vss.
- Refer to TB389 for design guidelines.
FN9066.5
January 3, 2006
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ISL6551AR 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551AR-T 制造商:Rochester Electronics LLC 功能描述: 制造商:Intersil Corporation 功能描述:
ISL6551ARZ 功能描述:IC REG CTRLR FLYBACK PWM 28-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)
ISL6551ARZ-T 功能描述:IC REG CTRLR FLYBACK PWM 28-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)
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