參數(shù)資料
型號(hào)： TC1303B-DM3EMF
元件分類(lèi)： 穩(wěn)壓器
英文描述： 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
封裝： 3 X 3 MM, 0.9 MM HEIGHT, PLASTIC, DFN-10
文件頁(yè)數(shù)： 16/38頁(yè)
文件大?。?/td> 756K
代理商： TC1303B-DM3EMF
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
相關(guān)PDF資料
PDF描述
TC1303B-DN0EMF 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
TC1303B-DO3EMFTR 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
TC1303B-EM2EUN 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
TC1303B-FE2EUN 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
TC1303B-FH2EMFTR 0.5 A SWITCHING REGULATOR, 2400 kHz SWITCHING FREQ-MAX, PDSO10
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TC1303B-IA0EMF 功能描述:低壓差穩(wěn)壓器 - LDO PWM/LDO combo w/PG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TC1303B-IA0EMFTR 功能描述:低壓差穩(wěn)壓器 - LDO PWM/LDO combo w/PG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TC1303B-IA0EUN 功能描述:低壓差穩(wěn)壓器 - LDO PWM/LDO combo w/PG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TC1303B-IA0EUNTR 功能描述:低壓差穩(wěn)壓器 - LDO PWM/LDO combo w/PG RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動(dòng)電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
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