MAX889
High-Frequency, Regulated, 200mA, Inverting Charge Pump
Regulated Inverting Charge Pump Delivers 200mA for Negative Supply without Inductors
MyMaxim SubscriptionsProduct Details
Key Features
Applications/Uses
| Topology | Inverter Regulated |
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| IOUT (A) (typ) | 0.2 |
| Unadj. VOUT (V) | -VIN |
| Adj. VOUT (V) (min) | -VIN |
| Adj. VOUT (V) (max) | -2.5 |
| IQ (mA) (max) | 7 |
| Switching Frequency (kHz) | 500 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | See Data Sheet |
Simplified Block Diagram
Technical Docs
| Data Sheet | High-Frequency, Regulated, 200mA, Inverting Charge Pump | Oct 04, 2000 | |
| App Note | Simple Circuit Converts +5V to -10V | ||
| Tutorial | Choosing the Right Power-Supply IC for your Application |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Parameters
| Topology | Inverter Regulated |
| VIN (V) (min) | 2.7 |
| VIN (V) (max) | 5.5 |
| IOUT (A) (typ) | 0.2 |
| Unadj. VOUT (V) | -VIN |
| Adj. VOUT (V) (min) | -VIN |
| Adj. VOUT (V) (max) | -2.5 |
| IQ (mA) (max) | 7 |
| Switching Frequency (kHz) | 500 |
| Oper. Temp. (°C) | -40 to +85 |
| Package/Pins | See Data Sheet |
Key Features
- 200mA Output Current
- Up to 2MHz Switching Frequency
- Small Capacitors (1µF)
- +2.7V to +5.5V Input Voltage Range
- Adjustable Regulated Negative Output (-2.5V to -VIN)
- 0.1µA Logic-Controlled Shutdown
- Low 0.05Ω Output Resistance (in regulation)
- Soft-Start and Foldback Current Limited
- Short-Circuit and Thermal Shutdown Protected
- 8-Pin SO Package
Applications/Uses
- Battery-Powered Applications
- Camcorders
- Digital Still Cameras
- Hard Disk Drive
- Measurement Instrumentation
- TFT Panels
Description
The MAX889 is available with an operating frequency of 2MHz (T version), 1MHz (S version), or 0.5MHz (R version). The higher switching frequency devices allow the use of smaller capacitors for space-limited applications. The lower frequency devices have lower quiescent current.
The MAX889 also features a 0.1µA logic-controlled shutdown mode and is available in an 8-pin SO package. An evaluation kit, MAX889SEVKIT, is available.
Technical Docs
| Data Sheet | High-Frequency, Regulated, 200mA, Inverting Charge Pump | Oct 04, 2000 | |
| App Note | Simple Circuit Converts +5V to -10V | ||
| Tutorial | Choosing the Right Power-Supply IC for your Application |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Sampling:
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.
Request a Quote