Series: -
Output Type: Adjustable
Number of Outputs: 1
PWM Type: -
Synchronous Rectifier: No
Operating Temperature: 0°C ~ 70°C
Mounting Type: Surface Mount
Type: Switched Capacitor (Charge Pump), Inverting
Packaging: Tube
Voltage - Input: 2.7 V ~ 5.5 V
Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package: 8-MSOP
Current - Output: 20mA
Voltage - Output: Adjustable
Frequency - Switching: 900kHz
Manufacturer: Linear Technology
Pinout
DescriptionThe LTC1551LCMS8 is switched capacitor charge pump voltage inverters which include internal linear postregulators to minimize output ripple.The device fixed output voltage versions include 4.1V,2.5V and 2V with ripple voltages typically below 1mVP-P.The LTC1551LCMS8 is also available in an adjustable output voltage version.The device is ideal for use as bias voltage generators for GaAs transmitter FETs in portable RF and cellular telephone applications.
Features of the LTC1551LCMS8 are:(1)regulated negative voltage from a single positive supply;(2)low output ripple: less than 1mVP-P Typ;(3)high charge pump frequency: 900kHz;(4)small charge pump capacitors: 0.1F;(5)requires only four external capacitors;(6)fixed 4.1V, 2.5V, 2V or adjustable output;(7)shutdown mode drops supply current to <1mA;(8)high output current: up to 20mA (depending on VCC to VOUT range);(9)output regulation: 2.5% over line, load and temperature;(10)available in 8-lead MSOP, 8-lead narrow SO and 16-lead narrow SSOP.Applications of the LTC1551LCMS8 are:(1)GaAs FET bias generators;(2)negative supply generators;(3)battery-powered systems;(4)single supply applications.
The absolute maximum ratings of the LTC1551LCMS8 can be summarized as:(1):the parameter is supply voltage,the rating is 5.5,the unit is V;(2):the parameter is output voltage,the rating is 0.3 to VCC-10.5,the unit is V;(3):the parameter is total voltage,VCC to CPOUT,the rating is 10.8,the unit is V;(4):the parameter is input voltage (SHDN Pin),the rating is -0.3 to VCC+0.3,the unit is V;(5):the parameter is input voltage (REG Pin),the rating is -0.3 to 6,the unit is V;(6):the parameter is output short-circuit duration,the rating is 30,the unit is sec;(7):the parameter is commercial temperature range,the rating is 0 to 70,the unit is ;(8):the parameter is extended commercial operating temperature range,the rating is -40 to 85,the unit is ;(9):the parameter is industrial temperature,the rating is -40 to 85,the unit is ;(10):the parameter is storage temperature range,the rating is -65 to +150,the unit is ;(11):the parameter is lead temperature (soldering, 10 sec),the rating is 300,the unit is .
Parameters: | Technical/Catalog Information | LTC1551LCMS8 |
| Vendor | Linear Technology |
| Category | Integrated Circuits (ICs) |
| Type | Switched Capacitor (Charge Pump), Inverting |
| Number of Outputs | 1 |
| Voltage - Input | 2.7 ~ 5.5 V |
| Voltage - Output | Adjustable |
| Current - Output | 20mA |
| Power - Output | - |
| Package / Case | 8-MSOP, Micro8?, 8-uMAX, 8-uSOP, |
| Packaging | Bulk |
| Internal Switch(s) | Yes |
| Synchronous | No |
| Rds (On) | - |
| Operating Temperature | 0°C ~ 70°C |
| Frequency - Switching | 900kHz |
| Drawing Number | 161; 05-08-1660; MS, MS8; 8 |
| Lead Free Status | Contains Lead |
| RoHS Status | RoHS Non-Compliant |
| Other Names | LTC1551LCMS8
LTC1551LCMS8
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LTC1551LCMS8 Data Sheet
