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參數(shù)資料
| 型號(hào)： | RT9177-26CBR |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Ultra-Low-Noise 200mA LDO Regulator |
| 中文描述： | 超低噪聲200mA LDO穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 9/12頁(yè) |
| 文件大小： | 262K |
| 代理商： | RT9177-26CBR |
Preliminary
RT9177
DS9177-00 Feb. 2001
www.richtek-ic.com.tw
9
Current Limit and Thermal Protection
The RT9177 is included a current limit circuit used to
monitor and control the pass transistor’s gate voltage
to limit the output current to 300mA in typical and
thermal-overload protection circuit used to limit total
power dissipation. When the junction temperature
exceeds TJ = 150°C, the thermal sensor signals the
shutdown logic to turn off the pass transistor and allow
the IC to cool down. The thermal sensor will turn on
the pass transistor again after the IC’s junction
temperature cool down to 120°C. This will cause a
pulsing output during continuous thermal-overload
conditions. Thermal-overloaded protection is designed
to protect the RT9177 in the event of fault conditions.
Do not exceed the absolute maximum junction-
temperature rating of TJ = 125°C for continuous
operation. The output can be shorted to ground for an
indefinite amount of time without damaging the part by
cooperation of current limit and thermal protection.
Operating Region and Power Dissipation
The maximum power dissipation of RT9177 depends
on the thermal resistance of the case and circuit
board, the temperature difference between the die
junction and ambient air, and the rate of airflow. The
power dissipation across the device is P = I
OUT
(V
IN
-
V
OUT
). The maximum power dissipation is: PMAX =
(TJ - TA) /
θ
ja
where TJ - TA is the temperature difference between
the RT9177 die junction and the surrounding
environment,
θ
ja is the thermal resistance from the
junction to the surrounding environment. The GND pin
of the RT9177 performs the dual function of providing
an electrical connection to ground and channeling heat
away. Connect the GND pin to ground using a large
pad or ground plane.
Fig. 3
V
IN
V
OUT
Fig. 4
V
IN
V
OUT
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| RT9178-25GB | 功能描述:IC REG LDO 2.5V .2A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:2.1V 輸入電壓:最高 7.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:5A（最小值） 電流 - 限制（最小）:5.1A 工作溫度:-40°C ~ 100°C 安裝類型:通孔 封裝/外殼:TO-220-5 供應(yīng)商設(shè)備封裝:TO-220-5 包裝:管件 配用:296-20624-ND - EVAL MOD FOR TPS72518 其它名稱:296-15154-5 |
| RT9178-26GB | 功能描述:IC REG LDO 2.6V .2A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:2.1V 輸入電壓:最高 7.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:5A（最小值） 電流 - 限制（最?。?5.1A 工作溫度:-40°C ~ 100°C 安裝類型:通孔 封裝/外殼:TO-220-5 供應(yīng)商設(shè)備封裝:TO-220-5 包裝:管件 配用:296-20624-ND - EVAL MOD FOR TPS72518 其它名稱:296-15154-5 |
| RT9178-28PB | 制造商:Richtek 功能描述:200mA LDO Regulator |
| RT9178-2HGB | 功能描述:IC REG LDO 2.85V .2A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:2.1V 輸入電壓:最高 7.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:5A（最小值） 電流 - 限制（最小）:5.1A 工作溫度:-40°C ~ 100°C 安裝類型:通孔 封裝/外殼:TO-220-5 供應(yīng)商設(shè)備封裝:TO-220-5 包裝:管件 配用:296-20624-ND - EVAL MOD FOR TPS72518 其它名稱:296-15154-5 |
| RT9178-30GB | 功能描述:IC REG LDO 3V .2A SOT23-5 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:2.1V 輸入電壓:最高 7.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:- 穩(wěn)壓器數(shù)量:1 電流 - 輸出:5A（最小值） 電流 - 限制（最小）:5.1A 工作溫度:-40°C ~ 100°C 安裝類型:通孔 封裝/外殼:TO-220-5 供應(yīng)商設(shè)備封裝:TO-220-5 包裝:管件 配用:296-20624-ND - EVAL MOD FOR TPS72518 其它名稱:296-15154-5 |
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