Purchase MC1121, In-stock MC1121 From SeekIC.
Part Number: MC1121
Description: The MC1121 is a charge pump converter with 100mA output current capability. It converts a 2.4V to 5.5V input to a corre...
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MC1121
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DataSheet
General Description
MC1121 General Description
The MC1121 is a charge pump converter with 100mA output current capability. It converts a 2.4V to 5.5V input to a corresponding negative output voltage. As with all charge pump converters, the MC1121 uses no inductors saving cost, size, and reducing EMI.
An onboard oscillator operates at a typical frequency of 10kHz (at VDD = 5V) when the frequency control input (FC) is connected to ground. The oscillator frequency increases to 200kHz when FC is connected to VDD, allowing the use of smaller capacitors. Operation at sub10kHz frequencies results in lower quiescent current and is accomplished with the addition of an external capacitor from OSC (pin7) to ground. The MC1121 can be driven from an external clock connected OSC. Typical supply current at 10kHz is 50A, and falls to less than 1A when the shutdown input is brought low, whether the internal or an external clock is used. The MC1121 is available in a Micro8 package.
MC1121 Maximum Ratings
|
Parameter |
Value |
Unit |
|
VDD Supply Voltage |
6.0 |
V |
|
Operating Temperature Range |
40 to +85 |
|
|
OSC, FC, SHDN Input Voltage |
0.3 to (VDD+0.3) |
V |
|
Output Short Circuit Duration |
10 |
Sec |
|
Storage Temperature Range |
65 to +150 |
|
|
Package Power Dissipation (TA 70 ) Micro8
Derate by 4mW/ for TA > 70 |
333 |
mW |
|
Lead Temperature (Soldering, 10 Seconds) |
+300 |
|
MC1121 Features
Converts a 2.4V to 5.5V Input Voltage to a Corresponding Negative Output Voltage (Inverter Mode)
Uses Only 2 Capacitors; No Inductors Required!
High Output Current: 100mA
Selectable Oscillator Frequency: 10kHz to 200kHz
PowerSaving Shutdown Input
Optional HighFrequency Operation Allows Use of Small Capacitors
Low Operating Current (FC = GND): 50A
Tested Operating Temperature Range: 40 to +85
Uses Only 2 Capacitors; No Inductors Required!
High Output Current: 100mA
Selectable Oscillator Frequency: 10kHz to 200kHz
PowerSaving Shutdown Input
Optional HighFrequency Operation Allows Use of Small Capacitors
Low Operating Current (FC = GND): 50A
Tested Operating Temperature Range: 40 to +85
MC1121 Typical Application
Laptop Computers
Medical Instruments
Disk Drives
PBased Controllers
Process Instrumentation
Medical Instruments
Disk Drives
PBased Controllers
Process Instrumentation
MC1121 Connection Diagram
MC1121
PDF/DataSheet Download
- Datasheet: MC1121
- File Size: 105013 KB
- Manufacturer:
- Click here to Download
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