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参数资料
| 型号： | FAN5361UC19X |
| 厂商： | Fairchild Semiconductor |
| 文件页数： | 13/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC 1.9V 6-WLCSP |
| 标准包装： | 3,000 |
| 系列： | TinyBuck™ |
| 类型： | 降压（降压） |
| 输出类型： | 固定 |
| 输出数： | 1 |
| 输出电压： | 1.9V |
| 输入电压： | 2.3 V ~ 5.5 V |
| 频率 - 开关： | 6MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-UFBGA，WLCSP |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 6-WLCSP |
Under-Voltage Lockout (UVLO)
When V IN is LOW, fixed switching is maintained as long as
When EN is HIGH, the under-voltage lockout keeps the part
from operating until the input supply voltage rises high
V OUT
V IN
? 1 ? t OFF ( MIN ) ? f SW ? 0 . 7 .
enough to properly operate. This ensures no misbehavior of
the regulator during startup or shutdown.
Thermal Shutdown (TSD)
When the die temperature increases, due to a high load
The switching frequency drops when the regulator cannot
provide sufficient duty cycle at 6MHz to maintain regulation.
This occurs when V OUT is greater than or equal to 1.82V and
V IN is below 2.9V at high load currents (see Figure 15) .
? ?
f SW ? min ?
, 6 MHz ?
? t SW ( MAX )
?
?
condition and/or a high ambient temperature, the output
switching is disabled until the temperature on the die has
fallen sufficiently. The junction temperature at which the
thermal shutdown activates is nominally 150°C with a 15°C
hysteresis.
Minimum Off-Time Effect on Switching
The calculation for switching frequency is given by:
1
?
where:
(3)
V OUT
t SW ( MAX ) ? 50 ns ? ? ? 1 ?
?
?
Frequency
t OFF(MIN) is 50ns. This imposes constraints on the maximum
that the FAN5361 can provide, or the maximum
V IN
where:
?
?
V OUT ? I OUT ? R OFF
V IN ? I OUT ? R ON ? V OUT
?
?
(4)
output voltage it can provide at low V IN while maintaining a
fixed switching frequency in PWM mode.
R OFF
= R DSON _ N ? DCR L
? 2008 Fairchild Semiconductor Corporation
R ON
= R DSON _ P ? DCR L
www.fairchildsemi.com
FAN5361 ? Rev. 1.1.3
13
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相关代理商/技术参数 |
参数描述 |
|---|---|
| FAN5361UMP10X | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:6MHz, 600mA TinyBuck⑩ Synchronous Buck Regulator |
| FAN5361UMP123X | 功能描述:直流/直流开关调节器 6MHz, 600mA / 750mA Synchronous Buck Reg RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
| FAN5361UMP12X | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:6MHz, 600mA TinyBuck⑩ Synchronous Buck Regulator |
| FAN5361UMP13X | 制造商:FAIRCHILD 制造商全称:Fairchild Semiconductor 功能描述:6MHz, 600mA TinyBuck⑩ Synchronous Buck Regulator |
| FAN5361UMP15X | 功能描述:直流/直流开关调节器 6MHz;600mA;TinyBuck Syncronous Buck Reg. RoHS:否 制造商:International Rectifier 最大输入电压:21 V 开关频率:1.5 MHz 输出电压:0.5 V to 0.86 V 输出电流:4 A 输出端数量: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:PQFN 4 x 5 |
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