Product Overview
REG1117A adjustable low-dropout regulator, SOT-223, marked BB1117A
Condition
New. The photo shows a representative unit from our stock. Same or next business day shipping from our Idaho warehouse. Honest pricing, no nonsense. Online since 1999. We are here for our customers, with a no-hassle satisfaction guarantee.
Product Overview
The photo shows three of these parts seated in black carrier tape, each body in the frame printed BB1117A on the first line and 2BZ7SYV on the second. Per the Burr-Brown and TI REG1117 ordering table, the SOT-223 top mark BB1117A belongs to part number REG1117A, the adjustable 1 A version of this low-dropout regulator. Ten are on the shelf and they are sold each.
Key Features
- Adjustable low-dropout positive regulator, output from 1.25 V, per TI's published REG1117A data; the TI product page states an adjustable range to 13.8 V
- Input 3.7 V to 15 V, per TI's published REG1117A product data
- 1 A maximum output for the A version, per Burr-Brown and TI's published REG1117 data (SBVS001); the non-A REG1117 is 800 mA
- Dropout 1.2 V typical and 1.3 V maximum at 1 A, per Burr-Brown and TI's published REG1117 data
- Reference 1.250 V nominal, 1.238 V to 1.262 V at 10 mA load, per Burr-Brown and TI's published REG1117 data
- Package: SOT-223 (DCY). The 1 A figure is the device rating; in this small body the usable continuous current is set by board copper and thermal dissipation
- No voltage suffix in the part number means the adjustable version, set by an external resistor pair
- The bodies in the photo are marked BB1117A over the lot code 2BZ7SYV, quoted as read and not decoded
Verify against Texas Instruments' published REG1117A data before designing in.
Applications
- Surface-mount 3.3 V or 2.5 V rails derived from a 5 V supply
- Low-dropout post-regulation after a switching converter
- Compact boards where a TO-220 regulator will not fit
- Replacing an adjustable SOT-223 LDO on an existing assembly
Frequently Asked Questions
How many should I order? Order the count your board needs; ten are on the shelf here, so a prototype run plus a spare or two is within reach. Shipping is $8 flat rate and free on orders over $28, so small parts like this ship smartest as part of a larger order.
Is BB1117A the part number I should search for? It is the top mark, not the orderable number. The published ordering table maps the SOT-223 marking BB1117A to REG1117A, so search on REG1117A and expect the parts to arrive marked BB1117A, which is what the photo shows.
The case says BB1117A and the ordering table says REG1117A; the silicon inside has never minded which one you call it.
