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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)： | 6/12頁 |
| 文件大小： | 287K |
| 代理商： | LTC1550 |
6
LTC1550/LTC1551
PI
FU
CTIO
N
S
U
U
REG:
This is an open-drain output that pulls low when the
output voltage is within 5% of the set value. It will sink 7mA
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 12V above
ground without damage.
ADJ:
For adjustable versions only, this is the feedback
point for the external resistor divider string. Connect a
divider string from AGND to V
OUT
with the divided tap
connected to ADJ. Note that the resistor string needs to be
connected “upside-down” from a traditional negative regu-
lator. See the Applications Information section for hook-
up details.
NC:
No Internal Connection.
BLOCK DIAGRA
M
W
–
+
–
+
S2
S3
S1
S4
C
CP
V
CC
CP
OUT
C1
+
–
C1
CLK
900kHz
SENSE
CHARGE
PUMP
LINEAR
REGULATOR
1550/51 BD
V
OUT
ADJ
REG
C
OUT
60mV
1.18V
*SHDN
*SHDN FOR LTC1550, SHDN FOR LTC1551
** FIXED OUTPUT VERSIONS ONLY
COMP2
**
**
+
1.24V
APPLICATIO
S I
FOR
ATIO
U
OVERVIEW
The LTC1550/LTC1551 are switched capacitor, inverting
charge pumps with internal linear post-regulators. The
LTC1550CS8/LTC1551CS8 provide a regulated, low ripple
–4.1V output at up to 10mA load current from a single 5V
supply. The LTC1550CGN provides a regulated, low ripple
adjustable output. Output load current for the adjustable
version depends on the input/output voltage combination.
W
U
U
Consult the graph provided in the Typical Performance
Characteristics section and the Electrical Characteristics
table for guaranteed test points. The LTC1550/LTC1551
are ideal for use as bias voltage generators for GaAs
transmitter FETs in portable RF and cellular telephone
applications. The LTC1550 features an active-low
Shutdown pin (SHDN) that drops quiescent current to
below 1
μ
A. The LTC1551 is identical to the LTC1550,
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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) 供應商設備封裝: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) 供應商設備封裝: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 供應商設備封裝: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) 供應商設備封裝:8-SOIC |
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