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參數(shù)資料
| 型號： | LTC1986 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 3V/5V SIM Power Supply,Micropower Charge Pump DC/DC Converter(用于3V/5V SMI電源,微功耗電荷泵DC/DC變換器) |
| 中文描述： | 3V/5V SIM卡電源，微功耗電荷泵DC / DC轉(zhuǎn)換器（用于3V/5V管理新措施電源，微功耗電荷泵型DC / DC變換器） |
| 文件頁數(shù)： | 6/8頁 |
| 文件大小： | 149K |
| 代理商： | LTC1986 |
6
LTC1986
Output Ripple
Normal 5V mode operation produces voltage ripple on the
V
OUT
pin. Output voltage ripple is required for regulation.
Low frequency ripple exists due to the hysteresis in the
sense comparator and propagation delays in the charge
pump enable/disable circuits. High frequency ripple is
also present mainly from the ESR (equivalent series resis-
tance) in the output capacitor. Typical output ripple with
V
IN
= 3V under maximum load is 75mV
P-P
with a low ESR
2.2
μ
F output capacitor and a 0.047
μ
F C1 capacitor. For
applications requiring V
IN
to exceed 3.3V or for applica-
tions requiring <75mV of peak-to-peak ripple, a 3.3
μ
F to
10
μ
F C
OUT
capacitor is recommended. Slight further de-
creases in output ripple can be achieved by using C
OUT
capacitors larger than 10
μ
F.
APPLICATIO
S I
N
FOR
ATIO
U
W
U
Protection Features
The LTC1986 provides several protection features.
Undervoltage lockout prevents any current from flowing
between V
IN
and V
OUT
until the V
IN
voltage
exceeds 1.4V (typ). This prevents undesirable glitches
during power-up. The parts also limit inrush current
during power-up to under 200mA regardless of V
IN
volt-
age, operating mode and output load by disabling the main
direct connect switch (3V mode) or the charge pump
(5V mode) and enabling a 50
series switch between V
IN
and V
OUT
until V
OUT
reaches V
IN
/2. The parts are also
short-circuit protected and can survive an indefinite short
from V
OUT
to GND regardless of operating mode or input
voltage. In the event of thermal overload, the parts will
enter thermal shutdown if the junction temperature
exceeds 165
°
C and return to normal operation once the
junction temperature drops to 150
°
C.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1986ES6#PBF | 制造商:Linear Technology 功能描述:DP-Charge Pump/General Purpose, Cut Tape SIM Pwr Supply in SOT-23 6-lead |
| LTC1986ES6#TR | 功能描述:IC REG BOOST SWITCHED CAP SOT23 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1986ES6#TRM | 功能描述:IC REG BOOST SWITCHED CAP SOT23 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1986ES6#TRMPBF | 功能描述:IC REG BOOST SWITCHED CAP SOT23 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-6 細(xì)型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC1986ES6#TRPBF | 功能描述:IC REG BOOST SWITCHED CAP SOT23 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:20 系列:SIMPLE SWITCHER® 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:12V 輸入電壓:4 V ~ 60 V PWM 型:電壓模式 頻率 - 開關(guān):52kHz 電流 - 輸出:1A 同步整流器:無 工作溫度:-40°C ~ 125°C 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 包裝:管件 供應(yīng)商設(shè)備封裝:16-DIP 其它名稱:*LM2575HVN-12LM2575HVN-12 |
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