615kHz/1.25MHz Step-up PWM DC/DC Converter
Product details
Parameters
Package | Pins | Size
Features
- Operating Voltage Range of 2.7V to 7V
- 615kHz/1.25MHz Pin Selectable Frequency Operation
- Over Temperature Protection
- Optional Soft-Start Function
- 8-Lead VSSOP Package
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Description
The LM3224 is a step-up DC/DC converter with a 0.15Ω (typ.), 2.45A (typ.) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. With the high current switch it is also ideal for driving high current white LEDs for flash applications. The LM3224 can be operated at switching frequencies of 615kHz and 1.25MHz allowing for easy filtering and low noise. An external compensation pin gives the user flexibility in setting frequency compensation, which makes possible the use of small, low ESR ceramic capacitors at the output. An external soft-start pin allows the user to control the amount of inrush current during start up. The LM3224 is available in a low profile 8-lead VSSOP package.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter datasheet (Rev. C) | Mar. 07, 2013 |
| Selection guide | Power Management Guide 2018 (Rev. R) | Jun. 25, 2018 | |
| User guide | AN-1394 LM3224 Evaluation Board (Rev. A) | Apr. 26, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The LM3224 is a step-up DC/DC converter with a 0.15 ohm (typ.), 2.45A (typ) internal switch and pin selectable operating frequency. With the ability to convert 3.3V to multiple outputs of 8V, -8V, and 23V, the LM3224 is an ideal part for biasing TFT displays. WIth the high current switch it is also (...)
Features
- Operating voltage range of 2.7V to 7V
- 615kHz/1.25MHz pin selectable frequency operation
- Over temperature protection
- Optional soft-start function
- 8-Lead MSOP package
Applications
- TFT Bias Suplies
- Handheld Devices
- Portable Applications
- GSM/CDMA Phones
- Digital Cameras
- White LED Flash/Torch Applications
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| VSSOP (DGK) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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