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| 型号： | TC1303A-BF0EMFTR |
| 元件分类： | 稳压器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3 X 3 MM, 0.9 MM HEIGHT, PLASTIC, DFN-10 |
| 文件页数： | 16/38页 |
| 文件大小： | 756K |
| 代理商： | TC1303A-BF0EMFTR |
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2008 Microchip Technology Inc.
DS21949C-page 23
TC1303A/TC1303B/TC1303C/TC1304
4.6
TC1304 Sequencing
The TC1304 device features an integrated sequencing
option. A sequencing circuit using only the SHDN input,
(Pin1), will turn on the LDO output (VOUT2) and delay
the turn on of the Buck Regulator output (VOUT1) until
the LDO output is in regulation. During power-down,
the sequencing circuit will turn off the Buck Regulator
output prior to turning off LDO output.
FIGURE 4-2:
TC1304 Sequencing Circuit.
FIGURE 4-3:
TC1304 Power-up Timing
from SHDN.
4.7
Soft Start
Both outputs of the TC1303/TC1304 are controlled
during start-up. Less than 1% of VOUT1 or VOUT2
overshoot is observed during start-up from VIN rising
above the UVLO voltage or either SHDN1 or SHDN2
being enabled.
4.8
Overtemperature Protection
The TC1303/TC1304 has an integrated overtempera-
ture protection circuit that monitors the device junction
temperature and shuts the device off if the junction
temperature exceeds the typical 165°C threshold. If the
overtemperature threshold is reached, the soft start is
reset so that, once the junction temperature cools to
approximately 155°C, the device will automatically
restart.
Enable
VOUT2
VOUT1
+
–
+
–
160 s Delay*
92% of VOUT2
92% of VOUT1
To PG
Delay CKT.
SHDN
* 160 s delay on trailing edge
VIN1/VIN2
VOUT1
VOUT2
Power Good
Power Up Timing From SHDN
300 ms
tWK + tS
500 s
TC1304
SHDN
相关PDF资料 |
PDF描述 |
|---|---|
| TC1303A-BK1EMF | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
| TC1303A-BO2EMFTR | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
| TC1303A-CA0EUN | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
| TC1303A-CH0EMF | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
| TC1303A-CS2EMF | 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TC1303A-DG0EMF | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output |
| TC1303A-DG0EMFTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output |
| TC1303A-DG0EUN | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output |
| TC1303A-DG0EUNTR | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output |
| TC1303A-DG1EMF | 制造商:MICROCHIP 制造商全称:Microchip Technology 功能描述:500 mA Synchronous Buck Regulator, + 300 mA LDO with Power-Good Output |
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