参数资料
型号: CAT4237TD-GT3
厂商: ON Semiconductor
文件页数: 2/12页
文件大小: 0K
描述: IC LED DRVR WHT BCKLGHT TSOT23-5
标准包装: 1
恒定电流:
拓扑: PWM,升压(升压)
输出数: 1
内部驱动器:
类型 - 主要: 背光
类型 - 次要: 白色 LED
频率: 800kHz ~ 1.3MHz
电源电压: 2.8 V ~ 5.5 V
输出电压: 30V
安装类型: 表面贴装
封装/外壳: SOT-23-5 细型,TSOT-23-5
供应商设备封装: TSOT-23-5
包装: 标准包装
工作温度: -40°C ~ 85°C
产品目录页面: 805 (CN2011-ZH PDF)
其它名称: CAT4237TD-GT3DKR
CAT4237
V IN
L
D
V OUT
3 V to
4.2 V
C 1
33 m H
C 2
4.7 m F
VIN
SW
0.22 m F
CAT4237
OFF ON
SHDN
FB
V FB = 300 mV
20 mA
GND
R 1
15 W
L: Sumida CDRH3D16 ? 330
D: Central CMDSH05 ? 4 (rated 40 V)
C2: Taiyo Yuden UMK212BJ224 (rated 50 V)
Figure 1. Typical Application Circuit
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameters
V IN , FB voltage
SHDN voltage
SW voltage
Storage Temperature Range
Junction Temperature Range
Lead Temperature
Ratings
? 0.3 to +7
? 0.3 to +7
? 0.3 to +55
? 65 to +160
? 40 to +150
300
Units
V
V
V
_ C
_ C
_ C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 2. RECOMMENDED OPERATING CONDITIONS
Parameters
V IN
SW pin voltage
Ambient Temperature Range
6, 7 or 8 LEDs
Range
2.8 to 5.5
0 to 30
? 40 to +85
1 to 40
Units
V
V
_ C
mA
NOTE: Typical application circuit with external components is shown above.
5. Thin SOT23 ? 5 package thermal resistance q JA = 135 ° C/W when mounted on board over a ground plane.
http://onsemi.com
2
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