NCP1529ASNT1GEVB: 0.9 ~ 3.9V @ 1A, 2.7 ~ 5.5V in
Summary
The NCP1529 step−down DC−DC converter is a monolithic integrated circuit for portable applications powered from one cell Li−ion or three cell Alkaline/NiCd/NiMH batteries.
The device – available in an adjustable output voltage from 0.9 V to 3.9 V – is able to deliver up to 1 A. It uses synchronous rectification to increase efficiency and reduce external part count. The device also has a built−in 1.7 MHz (nominal) oscillator which reduces component size by allowing a small inductor and capacitors. Automatic switching PWM/PFM mode offers improved system efficiency.
Additional features include integrated soft−start, cycle−by−cycle current limiting and thermal shutdown protection. The NCP1529 is available in a space saving, low profile 2x2 x 0.5 mm UDFN6 package and TSOP−5 package.
Specifications
| Manufacturer | onsemi |
|---|---|
| Category | AC/DC and DC/DC Conversion |
| Sub-Category | DC/DC SMPS - Single Output |
| Eval Board Part Number | NCP1529ASNT1GEVBOS-ND |
| Eval Board Supplier | onsemi |
| Eval Board |
Board not Stocked
|
| Topology |
Step Down
|
| Outputs and Type |
1 Non-Isolated
|
| Voltage Out: Factory Set |
0.9 ~ 3.9 V
|
| Current Out |
1 A
|
| Voltage In |
2.7 ~ 5.5 V
|
| Efficiency @ Conditions |
>90%, 3.6V in, 3.3V @ 10 ~ 600 mA
>75%, 3.6V in, 1.2V @ 10 ~ 600 mA >70%, 3.6V in, 0.9V @ 10 ~ 550 mA |
| Voltage Out Range |
0.9 ~ 3.9 V
|
| Features |
Current Limit (Adj. or Fixed)
ESD Protection PFM or PWM Short Circuit Protection Shutdown, Enable, Standby Soft Start Synchronizable Thermal Protection Under Voltage Protection, Brown-Out |
| Switching Frequency |
1.7 MHz
|
| Standby Current [Typical] |
300 nA
|
| Quiescent Current [Typical] |
28 µA
|
| Component Count + Extras |
8 + 12
|
| Internal Switch |
Yes
|
| Design Author |
ONSemiconductor
|
| Application / Target Market |
Cell Phones
Digital Cameras Portable Devices Tablets USB Powered Devices |
| Standby Current [Maximum] |
1 µA
|
| Quiescent Current [Maximum] |
39 µA
|
| Main I.C. Base Part |
NCP1529
|
| Date Created By Author | 2012-04 |
| Date Added To Library | 2016-05 |
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