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參數(shù)資料
| 型號： | LTC1514-3.3 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator(3.3V輸出,步升/步降開關電容DC/DC變換器（帶低電池比較器）) |
| 中文描述： | 降壓型開關電容DC / DC轉換與低電池比較（3.3V的輸出，步升/步降開關電容直流/直流變換器（帶低電池比較器）） |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 209K |
| 代理商： | LTC1514-3.3 |
1
LTC1514-3.3/LTC1514-5
Step-Up/Step-Down Switched
Capacitor DC/DC Converters
with Low-Battery Comparator
I
3.3V or 5V Output Voltages
I
2V to 10V Input Voltage Range
I
Up to 50mA Output Current
I
Only Three External Capacitors Required
I
Soft Start Limits Inrush Current at Turn-On
I
Low Operating Current: 60
μ
A
I
Low Shutdown Current: 10
μ
A
I
Shutdown Disconnects Load from V
IN
I
Short-Circuit and Overtemperature Protected
I
650kHz Switching Frequency
I
Low-Battery Comparator Active in Shutdown
I
Available in SO-8 Package
FEATURES
DESCRIPTIO
N
U
The LTC
1514-3.3/LTC1514-5 are micropower switched
capacitor DC/DC converters that produce a regulated
output voltage by either stepping up or stepping down
the input voltage. Output voltage is fixed at either 3.3V
(LTC1514-3.3) or 5V (LTC1514-5) by an internal resistor
divider.
A unique architecture allows the parts to accommodate
a wide input voltage range (2V to 10V) while maintaining
±
4% regulation. Additional circuitry prevents excessive
inrush current and output voltage ripple when large V
IN
to V
OUT
differentials are present.
An internal uncommitted comparator is kept active in
shutdown. The comparator has an open-drain output for
flexible interfacing.
The parts are short-circuit and overtemperature pro-
tected. Battery life is maximized by very low operating
currents (I
CC
= 60
μ
A typ, 10
μ
A in shutdown). Both parts
are available in an SO-8 package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO
S
U
I
Battery-Operated Equipment
I
Smart Card Readers
I
Local Power Supplies
I
Handheld Instruments
I
Battery Backup Supplies
INPUT VOLTAGE (V)
2
O
10
LT1514 TA02
4
6
8
3
5
7
9
5.2
5.1
5.0
4.9
4.8
I
OUT
= 10mA
TYPICAL APPLICATIO
N
U
1
2
3
4
8
7
6
5
SHDN
LBO
LBI
GND
V
OUT
V
IN
C1
+
C1
–
LTC1514-5
100k
V
OUT
= 5V
I
OUT
= 50mA
0.22
μ
F
10
μ
F
10
μ
F
V
4-CELL
NiCd
1.33M
1%
499k
1%
ON OFF
LOW BAT
1514 TA01
+
+
5V Step-Up/Step-Down Power Supply with Low-Battery Detect
LTC1514-5 Output Voltage
vs Input Voltage
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1514-5 | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator |
| LTC1514CS8-3.3 | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator |
| LTC1514CS8-5 | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator |
| LTC1514IS8-3.3 | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator |
| LTC1514IS8-5 | Step-Up/Step-Down Switched Capacitor DC/DC Converters with Low-Battery Comparator |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1514CS8-3.3 | 功能描述:IC REG MULTI CONFIG 3.3V 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC1514CS8-3.3#PBF | 功能描述:IC REG MULTI CONFIG 3.3V 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC1514CS8-3.3#TR | 功能描述:IC REG MULTI CONFIG 3.3V 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC1514CS8-3.3#TRPBF | 功能描述:IC REG MULTI CONFIG 3.3V 8SOIC RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC1514CS8-5 | 功能描述:IC REG MULTI CONFIG 5V 8SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 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，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
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