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參數(shù)資料
| 型號： | LTC1261CS8-4.5 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Switched Capacitor Regulated Voltage Inverter |
| 中文描述： | SWITCHED CAPACITOR REGULATOR, 550 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, SO-8 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 310K |
| 代理商： | LTC1261CS8-4.5 |
1
LTC1261
S
FEATURE
D
The LTC
1261 is a switched-capacitor voltage inverter
designed to provide a regulated negative voltage from a
single positive supply. The LTC1261CS operates from a
single 3V to 8V supply and provides an adjustable output
voltage from –1.25V to –8V. An on-chip resistor string
allows the LTC1261CS to be configured for output volt-
ages of –3.5V, –4V, –4.5V or –5V with no external
components. The LTC1261CS8 is optimized for applica-
tions which use a 5V or higher supply or which require
low output voltages. It requires a single external 0.1
μ
F
capacitor and provides adjustable and fixed output voltage
options in 8-pin SO packages. The LTC1261CS requires
one or two external 0.1
μ
F capacitors, depending on input
voltage. Both versions require additional external input
and output bypass capacitors. An optional compensation
capacitor at ADJ/COMP can be used to reduce the output
voltage ripple.
Each version of the LTC1261 will supply up to 12mA
output current with guaranteed output regulation of 5%.
The LTC1261 includes an open-drain REG output which
pulls low when the output is within 5% of the set value.
Output ripple is typically as low as 5mV. Quiescent current
is typically 600
μ
A when operating and 5
μ
A in shutdown.
The LTC1261 is available in a 14-pin narrow body SO
package and an 8-pin SO package.
U
ESCRIPTIO
I
Regulated Negative Voltage from a
Single Positive Supply
I
Can Provide Regulated –5V from a 3V Supply
I
REG Pin Indicates Output is in Regulation
I
Low Output Ripple: 5mV Typ
I
Supply Current: 600
μ
A Typ
I
Shutdown Mode Drops Supply Current to 5
μ
A
I
Up to 15mA Output Current
I
Adjustable or Fixed Output Voltages
I
Requires Only Three or Four External Capacitors
I
Available in SO-8 Packages
U
S
A
O
PPLICATI
Switched Capacitor
Regulated Voltage Inverter
I
GaAs FET Bias Generators
I
Negative Supply Generators
I
Battery-Powered Systems
I
Single Supply Applications
TYPICAL APPLICATIO
N
U
–4V Generator with Power Valid
, LTC and LT are registered trademarks of Linear Technology Corporation.
1
2
3
4
8
7
6
5
LTC1261-4
C1
–
SHDN
REG
OUT
COMP
V
CC
C1
+
GND
C2
0.1
μ
F
LTC1261 TA01
C4
3.3
μ
F
V
OUT
= –4V
AT 10mA
POWER VALID
5V
C1
1
μ
F
5V
10k
C3*
100pF
*OPTIONAL
+
Waveforms for –4V Generator with Power Valid
0V
OUT
–4V
5V
SHDN
0V
5V
POWER VALID
0V
0.2mS/DIV
LTC1261 TAO2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1261CS8 | Switched Capacitor Regulated Voltage Inverter |
| LTC1266-33 | Synchronous Regulator Controller for N- or P-Channel MOSFETs |
| LTC1266 | Phase-Locked Loop Systems 14-TSSOP -20 to 75 |
| LTC1266-5 | Synchronous Regulator Controller for N- or P-Channel MOSFETs |
| LTC1266ACS | Synchronous Regulator Controller for N- or P-Channel MOSFETs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1261IS8 | 功能描述:IC REG SWITCHD CAP INV ADJ 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: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 |
| LTC1261IS8#PBF | 功能描述:IC REG SWITCHD CAP INV ADJ 8SOIC 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 |
| LTC1261IS8#TR | 功能描述:IC REG SWITCHD CAP INV ADJ 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: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 |
| LTC1261IS8#TRPBF | 功能描述:IC REG SWITCHD CAP INV ADJ 8SOIC 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 |
| LTC1261LCMS8 | 功能描述:IC REG SWITCHD CAP INV ADJ 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 |
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