參數(shù)資料
型號(hào)： TPS77427
廠商： Texas Instruments, Inc.
英文描述： "Single Output LDO
中文描述： 快速瞬態(tài)響應(yīng) 250mA LDO 穩(wěn)壓器，具有電源狀態(tài)良好指示、MSOP-8 封裝
文件頁(yè)數(shù)： 16/23頁(yè)
文件大?。?/td> 355K
代理商： TPS77427
TPS77301, TPS77318, TPS77327, TPS77328, TPS77333 WITH RESET OUTPUT
TPS77401, TPS77418, TPS77427, TPS77428, TPS77433 WITH POWER GOOD OUTPUT
250-mA LDO REGULATORS WITH INTEGRATED RESET OR PG
SLVS281A – FEBRUARY 2000 – REVISED MARCH 2000
16
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
pin functions
enable (EN)
The EN terminal is an input which enables or shuts down the device. If EN is a logic high, the device will be in
shutdown mode. When EN goes to logic low, then the device will be enabled.
power good (PG) (TPS774xx)
The PG terminal is an open drain, active high output that indicates the status of V
out
(output of the LDO). When
V
out
reaches 82% of the regulated voltage, PG will go to a high impedance state. It will go to a low-impedance
state when V
out
falls below 82% (i.e. over load condition) of the regulated voltage. The open drain output of the
PG terminal requires a pullup resistor
.
sense (SENSE)
The SENSE terminal of the fixed-output options must be connected to the regulator output, and the connection
should be as short as possible. Internally, SENSE connects to a high-impedance wide-bandwidth amplifier
through a resistor-divider network and noise pickup feeds through to the regulator output. It is essential to route
the SENSE connection in such a way to minimize/avoid noise pickup. Adding RC networks between the SENSE
terminal and V
out
to filter noise is not recommended because it may cause the regulator to oscillate.
feedback (FB)
FB is an input terminal used for the adjustable-output options and must be connected to an external feedback
resistor divider. The FB connection should be as short as possible. It is essential to route it in such a way to
minimize/avoid noise pickup. Adding RC networks between FB terminal and V
out
to filter noise is not
recommended because it may cause the regulator to oscillate.
reset (RESET) (TPS773xx)
The RESET terminal is an open drain, active low output that indicates the status of V
out
. When V
out
reaches 95%
of the regulated voltage, RESET will go to a low-impedance state after a 220-ms delay. RESET will go to a
high-impedance state when V
out
is below 95% of the regulated voltage. The open-drain output of the RESET
terminal requires a pullup resistor.
相關(guān)PDF資料
PDF描述
TPS77427DGKG4 250-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING
TPS77427DGKRG4 250-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING
TPS77427DGK 250-mA LDO REGULATORS WITH INTEGRATED RESET OR PG
TPS77427DGKR 250-mA LDO REGULATORS WITH 8-PIN MSOP PACKAGING
TPS79628KTTRG3 ULTRALOW-NOISE, HIGH PSRR, FAST, RF, 1A LOW-DROPOUT LINEAR REGULATORS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS77427DGK 功能描述:低壓差穩(wěn)壓器 - LDO Fast Transient Response 250-mA 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
TPS77427DGKG4 功能描述:低壓差穩(wěn)壓器 - LDO Fast Transient Response 250-mA 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
TPS77427DGKR 功能描述:低壓差穩(wěn)壓器 - LDO Fast Transient Response 250-mA 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
TPS77427DGKRG4 功能描述:低壓差穩(wěn)壓器 - LDO Fast Transient Response 250-mA 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
TPS77428DGK 功能描述:低壓差穩(wěn)壓器 - LDO Fast Transient Response 250-mA 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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