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参数资料
| 型号： | SC600BIMLTRT |
| 厂商： | Semtech |
| 文件页数： | 11/19页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVR WHITE BCKLGT 10-MLP |
| 标准包装： | 1 |
| 系列： | mAhXLife™ |
| 拓扑： | PWM，切换式电容器（充电泵） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 650kHz |
| 电源电压： | 2.5 V ~ 6.5 V |
| 输出电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 供应商设备封装： | 10-MLPD（3x3） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 产品目录页面： | 1359 (CN2011-ZH PDF) |
| 其它名称： | SC600BIMLDKR |
SC600
POWER MANAGEMENT
Applications Information (Cont.)
Table 2 -Ripple Performance (Cont.)
P a r t N o .
F r e q . [ k H z ]
I O U T [ m A ]
O u t p u t R i p p l e [ m V p - p ] O u p u t R i p p l e [ m V p - p ]
1 . 5 x m o d e 2 x m o d e
C O U T [ μ F ]
C B U C K E T [ μ F ]
S C 6 0 0 B ( 1 ) 4 . 5 V
S C 6 0 0 D 4 . 0 V
8
3 2
2 6 2
6 5 0
6 5 0
8
3 2
2 6 2
6 5 0
6 5 0
1 0
4 0
1 2 0
1 2 0
1 2 0
1 0
4 0
1 2 0
1 2 0
1 2 0
2 1 5
3 0 0
4 0
1 5
3 0
1 0 5
2 4 0
3 0
1 1
2 5
5 0
9 0
2 5
2 5
4 5
5 0
4 5
2 0
2 0
4 0
1
1
1
1
0 . 3 3
1
1
1
1
0 . 3 3
1
1
1
1
1
1
1
1
1
1
Note: (1) SC600C is very similar to SC600B.
Mode Transition Impedance
The mode transition impedance Ro refers to the output
resistance of the charge pump before a transition to a
stronger mode occurs. Ro is dependent upon the frac-
tional charge pump, switching frequency, bucket capaci-
tor value, bucket capacitor ESR, and the internal switch
resistances.
A lower value of Ro will improve efficiency, so low ESR
ceramic capacitors are required. An X7R or X5R dielec-
tric is recommended. Y5V dielectric can require 2 to 3
times the rated value of an X7R dielectric for the same
performance over the operating temperature range.
Efficiency
Ro is proportional to,
1
fC
Efficiency for the SC600 is defined as,
V O I O
Ro can be measured to verify a low transition imped-
ance. Before measuring Ro, select the capacitors, set
the operating frequency and a constant load current. Find
the input voltage just before a weak to strong mode tran-
sition (i.e., 1.5x to 2x mode). Measure V IN , V OUT , and I OUT
before the transition.
Ro will be,
η = V IN mode I O
I Q
Ro=
mode V IN
I OUT
V OUT
? 2006 Semtech Corp.
11
www.semtech.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC600BIMSTR | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output |
| SC600BIMSTRT | 制造商:Semtech Corporation 功能描述:Driver IC Leaded Process Compatible:Yes |
| SC600CIMLTR | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output |
| SC600CIMLTRT | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output |
| SC600CIMSTR | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output |
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