Site
Map • Contact
Us 中文 • English
Related Links:
Selection Guides:
Power Management ICs: XENON Photoflash Cap Charger with IGBT Driver
- Home
- / Products
- / Part Numbers
- / A8733
- / Part Numbers
- / Products
A8733
Mobile Phone Xenon Photoflash Driver with IGBT Gate Driver
Data sheet
Features
- Primary side sense technology
- User-adjustable current limit from 0.6 to 1.8 A
- System Enable input
- 1.1 V logic capability
Applications
- Cell phone camera modules
Description
The Allegro® A8733 Xenon photoflash charger IC is designed to meet the needs of ultra-low power, small form factor cameras, particularly camera-phones.
The charge time is adjustable by setting the charge current limit from 0.6 to 1.8 A maximum. By using primary-side voltage sensing, the need for a secondary-side resistive voltage divider is eliminated. This has the additional benefit of reducing leakage currents on the secondary side of the transformer. To extend battery life, the A8733 features very low supply current draw—typically 0.01 µA in shutdown mode.
The A8733 has a system enable pin to prevent accident activation of CHARGE or TRIGGER signals The charge and trigger voltage logic thresholds are set at 1.1 VHI(min) to support applications implementing low voltage control logic. The A8733 is available in a 10-contact 3 mm × 3 mm DFN/ MLP package with a 0.75 nominal overall package height, and an exposed pad for enhanced thermal performance.
Functional Block Diagram
| Part Number | Package Type | RoHS Compliant |
Part Composition/ RoHS Data |
Temperature | Comments | Samples | Distributor Stock |
|---|---|---|---|---|---|---|---|
| A8733EEJTR-T | 10-lead MLP | Yes | view data | -40 °C to 85 °C | new |
Contact Local Sales Representative or check distributor stock |
Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.