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參數(shù)資料
| 型號： | LTC1550 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Low Noise, Switched Capacitor Charge Pump Voltage Inverters(低噪聲，開關(guān)電容電荷泵電壓反相器) |
| 中文描述： | 低噪聲，開關(guān)電容電荷泵電壓逆變器（低噪聲，開關(guān)電容電荷泵電壓反相器） |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 287K |
| 代理商： | LTC1550 |
1
LTC1550/LTC1551
Low Noise, Switched
Capacitor Regulated
Voltage Inverters
FEATURES
I
Regulated Negative Voltage from a Single
Positive Supply
I
Low Output Ripple: Less Than 1mV
P-P
Typ
I
High Charge Pump Frequency: 900kHz Typ
I
Small Charge Pump Capacitors: 0.1
μ
F
I
Requires Only Four External Capacitors
I
Fixed –4.1V or Adjustable Output
I
Shutdown Mode Drops Supply Current to < 1
μ
A
I
High Output Current: Up to 10mA, V
CC
= 5V
I
Output Regulation: 5%
I
Available in SO-8 and 16-Lead SSOP
I
GaAs FET Bias Generators
I
Negative Supply Generators
I
Battery-Powered Systems
I
Single Supply Applications
APPLICATIO
S
U
DESCRIPTIO
N
U
The LTC
1550/LTC1551 are switched capacitor charge
pump voltage inverters which include internal linear post-
regulators to minimize output ripple. Output voltages are
fixed at –4.1V, with ripple voltages typically below 1mV
P-P
.
The LTC1550 is also available in an adjustable output
voltage version. The LTC1550/LTC1551 are ideal for use
as bias voltage generators for GaAs transmitter FETs in
portable RF and cellular telephone applications.
The LTC1550/LTC1551 operate from single 4.5V to 6.5V
supplies and draw typical quiescent currents of 4.25mA
with a 5V supply. Each device includes a TTL compatible
Shutdown pin which drops supply current to 0.2
μ
A typi-
cally. The LTC1550 Shutdown pin is active low (SHDN),
while the LTC1551 Shutdown pin is active high (SHDN).
Only four external components are required: an input bypass
capacitor, two 0.1
μ
F charge pump capacitors and a filter
capacitor at the linear regulator output. The adjustable LTC1550
requires two additional resistors to set the output voltage. The
LTC1550/LTC1551 will supply up to 10mA output current
with a 5V supply, while maintaining guaranteed output
regulation of
±
5%.
The fixed voltage LTC1550/LTC1551 are available in S0-8
plastic packages. The adjustable LTC1550 is available in a
16-pin SSOP.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
N
U
V
OUT
Output Noise and Ripple
10
μ
s/DIV
1550/51 TA02
V
AC COUPLED
2mV/DIV
–4.1V Generator with 1mV
P-P
Noise
1
2
V
CC
8
7
SENSE
CP
OUT
SHDN
V
CC
C1
+
V
OUT
LTC1551
FERRITE BEAD
GND
C1
–
C
OUT
10
F
1550/51 F01
V
OUT
= –4.1V
I
LOAD
= 5mA
C
CP
0.1
μ
F
C1
0.1
μ
F
4.7
μ
F
C
IN
3
4
6
5
C
L
0.1
μ
F
+
+
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1550CGN | 制造商:Linear Technology 功能描述:Charge Pump INV -1.5V/-2V/-2.5V/-3V/-3.5V/-4.1V/-4.5V 10mA 16-Pin SSOP N |
| LTC1550CGN#PBF | 功能描述:IC REG SWITCHED CAP INV 16SSOP 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 |
| LTC1550CGN#TR | 功能描述:IC REG SWITCHED CAP INV 16SSOP 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 |
| LTC1550CGN#TRPBF | 功能描述:IC REG SWITCHED CAP INV 16SSOP 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: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 |
| LTC1550CS8-4.1 | 功能描述:IC REG SWITCHED CAP INV 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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