NCP1532GEVB: 2x 0.9 ~ 3.3V @ 1A, 2.7 ~ 5.5V in, Buck
Summary
The NCP1532 dual step down DCDC converter is a monolithic integrated circuit dedicated to supply core and I/O voltages of new multimedia design in portable applications powered from 1−cell Li−ion or 3 cell Alkaline/ NiCd / NiMH batteries.
Both channels are externally adjustable from 0.9 V to 3.3 V and can source totally up to 1.6 A, 1.0 A maximum per channel. Converters are running at 2.25 MHz switching frequency which reduces component size by allowing the use of small inductor (down to 1H) and capacitors and operates 180° out of phase to reduce large amount of current demand on the battery. Automatic switching PWM/PFM mode and synchronous rectification offer improved system efficiency. The device can also operate into fixed frequency PWM mode for low noise applications where low ripple and good load transients are required.
Additional features include integrated soft−start, cycle−by−cycle current limit and thermal shutdown protection. The device can also be synchronized to an external clock signal in the range of 2.25 MHz.
The NCP1532 is available in a space saving, ultra-low profile 3x3 x 0.55 mm 10 pin DFN package.
Specifications
| Manufacturer | onsemi |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Multi Output |
| Eval Board Part Number | NCP1532GEVBOS-ND |
| Eval Board Supplier | onsemi |
| Eval Board |
Normally In Stock
|
| Topology |
Step Down
|
| Outputs and Type |
2 Non-Isolated
|
| Voltage Out: Highest Current First |
0.9 ~ 3.3V (x2)
|
| Current Out |
1A per Channel
|
| Voltage In |
2.7 ~ 5.5 V
|
| Efficiency @ Conditions |
>90%, 3,6V in, 3.3V @ 10 ~ 800 mA
>75%, 3.6V in, 1.2V @ 30 ~ 600 mA |
| Voltage Out Range |
0.9 ~ 3.3 V
|
| Features |
Current Limit (Adj. or Fixed)
ESD Protection PWM Interface Short Circuit Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
2.25 MHz
|
| Standby Current [Typical] |
300 nA
|
| Quiescent Current [Typical] |
50 µA
|
| Component Count + Extras |
13 + 20
|
| Internal Switch |
Yes
|
| Design Author |
ONSemiconductor
|
| Application / Target Market |
Audio: MP3 Players
Cell Phones Digital Cameras Portable Devices Tablets |
| Standby Current [Maximum] |
1 µA
|
| Quiescent Current [Maximum] |
70 µA
|
| Main I.C. Base Part |
NCP1532
|
| Date Created By Author | 2013-04 |
| Date Added To Library | 2016-04 |
