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參數(shù)資料
| 型號： | LTC1261LCMS8-4 |
| 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： | 0.02 A SWITCHED CAPACITOR REGULATOR, 650 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | PLASTIC, MSOP-8 |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 182K |
| 代理商： | LTC1261LCMS8-4 |
5
LTC1261L
PI
FU
CTIO
N
S
U
U
V
CC
(Pin 1):
Power Supply. This requires an input voltage
between 2.7V and 5.25V. V
CC
must be bypassed to
ground with at least a 1
μ
F capacitor placed in close
proximity to the chip. See the Applications Information
section for details.
C1
+
(Pin 2):
C1 Positive Input. Connect a 0.1
μ
F capacitor
between C1
+
and C1
–
.
C1
–
(Pin 3):
C1 Negative Input. Connect a 0.1
μ
F capacitor
from C1
+
to C1
–
.
GND (Pin 4):
Ground. Connect to a low impedance
ground. A ground plane will help to minimize regulation
errors.
ADJ (COMP for fixed versions) (Pin 5):
Output Adjust/
Compensation Pin. For adjustable parts this pin is used
to set the output voltage. The output voltage is divided
down with an external resistor divider and fed back to this
pin to set the regulated output voltage. Typically the
resistor string should draw
≥
10
μ
A from the output to
minimize errors due to the bias current at the adjust pin.
Fixed output voltage parts have the internal resistor
string connected to this pin inside the package. The pin
can be used to trim the output voltage if desired. It can
also be used as an optional feedback compensation pin to
reduce output ripple on both the adjustable and fixed
output voltage parts. See the Applications Information
section for more information on compensation and out-
put ripple.
OUT (Pin 6):
Negative Voltage Output. This pin must be
bypassed to ground with a 1
μ
F or larger capacitor. The
value of the output capacitor and its ESR have a strong
effect on output ripple. See the Applications Information
section for more details.
REG (Pin 7):
This is an open-drain output that pulls low
when the output voltage is within 5% of the set value. It
will sink 5mA to ground with a 5V supply. The external
circuitry must provide a pull-up or REG will not swing
high. The voltage at REG may exceed V
CC
and can be
pulled up to 6V above ground without damage.
SHDN (Pin 8):
Shutdown. When this pin is at ground the
LTC1261L operates normally. An internal 5
μ
A pull-down
keeps SHDN low if it is left floating. When SHDN is pulled
high, the LTC1261L enters shutdown mode. In shut-
down, the charge pump is disabled, the output collapses
to 0V and the quiescent current drops to 5
μ
A typically.
TEST CIRCUITS
Fixed Output
1
2
3
4
8
7
6
5
SHDN
REG
OUT
COMP
V
CC
C1
+
LTC1261L-X
C1
–
GND
0.1
μ
F
1261L TCO1
3.3
μ
F
V
OUT
= –4V (LTC1261L-4)
V
OUT
= –4.5V (LTC1261L-4.5)
5V
10
μ
F
+
+
Adjustable Output
1
2
3
4
8
7
6
5
SHDN
REG
OUT
ADJ
V
CC
C1
+
C1
–
GND
V
CC
0.1
μ
F
1261L TCO2
3.3
μ
F
V
OUT
+
LTC1261L
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| LTC1261LCS8-4.5 | Switched Capacitor Regulated Voltage Inverter |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1261LCMS8-4#PBF | 功能描述:IC REG SWITCHD CAP INV -4V 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:- 標準包裝: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 |
| LTC1261LCMS8-4#TR | 功能描述:IC REG SWITCHD CAP INV -4V 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:- 標準包裝: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 |
| LTC1261LCMS8-4#TRPBF | 功能描述:IC REG SWITCHD CAP INV -4V 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:- 標準包裝: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 |
| LTC1261LCMS8-4.5 | 功能描述:IC REG SWITCHED CAP INV 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:- 標準包裝: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 |
| LTC1261LCMS8-4.5#PBF | 功能描述:IC REG SWITCHED CAP INV 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:- 標準包裝: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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