参数资料
| 型号： | SC632AULTRT |
| 厂商： | Semtech |
| 文件页数： | 11/15页 |
| 文件大小： | 0K |
| 描述： | IC REG SWITCHED CAP 5V 8MLPD |
| 标准包装： | 1 |
| 类型： | 切换式电容器（充电泵） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 5V |
| 输入电压： | 2.95 V ~ 5.5 V |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 275mA |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 8-MLPD（2x2） |
| 其它名称： | SC632AULDKR |
SC632A
Applications Information (continued)
Short-Circuit Current Protection
Short-circuit current protection is provided to limit the
current that can be sourced when the output is shorted to
Table 1 — Recommended Capacitors
ground. When a short circuit forces V OUT to drop below 2V,
the SCCP detects the condition and limits the output
Size Code
mil(mm)
Value
μF
Capacitor
Notes
current to 600mA (typical).
Over-Temperature Protection
The over-temperature circuit helps prevent the device
from overheating and experiencing a catastrophic failure.
When the junction temperature exceeds 65°C, the device
is disabled. It remains disabled until the junction tempera-
ture drops below this threshold. Hysteresis is included
that prevents the device from re-enabling until the junc-
tion temperature is reduced by 20°C.
Capacitor Selection
The SC632A is designed to use low-ESR ceramic capacitors
for the input and output bypass capacitors as well as the
charge pump bucket capacitors. The value of input, output
and decoupling capacitors will vary with system require-
ments for ripple and output current. Performance as
shown in the Typical Characteristic section is expected
when using 2.2μF capacitors in the 0603( 608 metric) case
size with X5R dieletric for C IN , C OUT , C and C 2 capacitors
(refer to Table ).
Consider the DC voltage characteristic of the capacitor
0603( 608)
0402( 005)
0402( 005)
0402( 005)
2.2
2.2
0.47
.0
0.
C IN , C OUT
C , C 2
C IN , C OUT
C , C 2
C IN , C OUT
C , C 2
C IN , C OUT
C , C 2
This capacitor is required for
the full rated output current.
Typical output V PP < 00mV
in all charge pump modes.
This capacitor combina-
tion supports up to 200mA
output current with typical
output V PP < 00mV in all
charge pump modes.
This capacitor combina-
tion supports up to 00mA
output current with typical
output V PP < 00mV in all
charge pump modes.
This combination of capaci-
tors support up to 00mA
output current with typical
output V PP < 00mV in all
charge pump modes.
The 0. μF bucket capaci-
tors will increase output
resistance by 2.5? compared
when choosing capacitors for an application. The value of
capacitance at the DC operating voltage may be consider-
ably lower than the rated value. The following table lists
recommended capacitor values which have been chosen
to minimize the impact of this limitation.
to 0.47μF and larger values.
So, at 00mA output the .5x
to 2x mode transition will be
200mV higher.
NOTE: Use only X5R type capacitors, with a 6.3V rating or higher
The highest capacitance values in the smallest package
sizes tend to have poor DC voltage characteristics. The
highest value 0402 size capacitor retains as little as 35% of
its rated value at 5VDC. The same value chosen in the next
larger package size, 0603, will retain about 60% of its rated
value at 5VDC.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC632EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Fixed 5.0V Output Charge Pump Regulator |
| SC632UL.TRT | 制造商:SEMTECH 功能描述:I.C. |
| SC632ULTRT | 制造商:Semtech Corporation 功能描述:Charge Pump STPUP 5V 275mA 8-Pin MLPD-UT T/R 制造商:SEMTECH 功能描述:Simple charge pump buck-boost converter |
| SC633 | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Fixed 5.3V Output Charge Pump Regulator |
| SC-63-3-5 | 功能描述:KNOB CLR/MATTE.625"DIA.250"SHAFT RoHS:是 类别:硬件，紧固件，配件 >> 旋钮 系列:SC 标准包装:1 系列:- 样式:圆柱形 类型:开槽 轴尺寸:0.250"（6.35mm） 直径:1.031"（26.19mm） 高度:0.688"（17.48mm） 指示灯:无指示灯 材质:塑料 颜色:黑 特点:8-32 号固定螺丝 |
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