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參數(shù)資料
| 型號： | LTC1522 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Micropower, Regulated 5V Charge Pump DC/DC Converter |
| 中文描述： | 微功耗，電壓5V充電泵DC / DC轉(zhuǎn)換器 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 223K |
| 代理商： | LTC1522 |
1
LTC1522
Micropower, Regulated
5V Charge Pump
DC/DC Converter
The LTC
1522 is a micropower charge pump DC/DC
converter that produces a regulated 5V output from a 2.7V
to 5V input supply. Extremely low supply current (6
μ
A
typical with no load, <1
μ
A in shutdown) and low external
parts count (one 0.22
μ
F flying capacitor and two 10
μ
F
capacitors at V
IN
and V
OUT
) make the LTC1522 ideally
suited for small, light load battery-powered applications.
Typical efficiency (V
IN
= 3V) exceeds 75% with load
currents between 50
μ
A and 20mA. Modulating the SHDN
pin keeps the typical efficiency above 75% with load
currents all the way down to 10
μ
A.
The LTC1522 has thermal shutdown and can survive a
continuous short from V
OUT
to GND. In shutdown the
load is disconnected from V
IN
. The part is available in
8-pin MSOP and SO packages. The LTC1522 is pin
compatible with the LTC1516 in applications where
V
IN
≥
2.7V and I
OUT
≤
20mA.
I
Ultralow Power: Typical Operating I
CC
= 6
μ
A
I
Short-Circuit/Thermal Protected
I
Regulated 5V
±
4% Output Voltage
I
2.7V to 5V Input Range
I
No Inductors
I
Very Low I
CC
in Shutdown: <1
μ
A
I
Output Current:10mA (V
IN
≥
2.7V)
20mA (V
IN
≥
3V)
I
Shutdown Disconnects Load from V
IN
I
Internal Oscillator: 700kHz
I
Compact Application Circuit (<0.1 in
2
)
I
8-Pin MSOP and SO Packages
FEATURES
DESCRIPTIO
N
U
APPLICATIO
S
U
I
SIM Interface Supplies for GSM Cellular Telephones
I
Li-Ion Battery Backup Supplies
I
Local 3V to 5V Conversion
I
Smart Card Readers
I
PCMCIA Local 5V Supplies
TYPICAL APPLICATIO
N
U
1
2
3
4
8
7
6
5
NC
SHDN
GND
C
–
NC
V
IN
V
OUT
C
+
LTC1522
ON/OFF
10
μ
F
10
μ
F
V
OUT
= 5V
±
4%
I
OUT
= 0mA TO 10mA, V
IN
≥
2.7V
I
OUT
= 0mA TO 20mA, V
IN
≥
3V
0.22
μ
F
V
2.7V TO 5V
+
+
1522 TA01
Regulated 5V Output from a 2.7V to 5V Input
Efficiency vs Output Current
OUTPUT CURRENT (mA)
50
60
70
80
90
E
100
1522 TA02
0.01
0.1
1
10
SHDN = 0V
V
IN
= 3V
LOW I
MODE
(SEE FIGURE 2)
, LTC and LT are registered trademarks of Linear Technology Corporation.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1522CMS8 | 功能描述:IC REG SWITCHED CAP 5V 8MSOP 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:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 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:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1522CMS8#PBF | 功能描述:IC REG SWITCHED CAP 5V 8MSOP 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:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC1522CMS8#TR | 功能描述:IC REG SWITCHED CAP 5V 8MSOP 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:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 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:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1522CMS8#TRPBF | 功能描述:IC REG SWITCHED CAP 5V 8MSOP 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:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 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:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-SOIC |
| LTC1522CS8 | 功能描述:IC REG SWITCHED CAP 5V 8SOIC 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 |
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