The LMS8117A device is a series of low-dropout voltage regulators with a dropout of 1.2 V at 1 A of load current. The device has the same pinout as the LM317.
The LMS8117A is available in an adjustable version, which can set the output voltage from 1.27 V to 13.8 V with only two external resistors. In addition, the device is also available in two fixed voltages, 1.8 V and 3.3 V.
The LMS8117A offers current limiting and thermal shutdown. The device circuit includes a Zener trimmed band-gap reference to assure output voltage accuracy to within ±1%.
The LMS8117A is available in SOT-223 and TO-252 D-PAK packages. A 10-µF (minimum) tantalum capacitor is required at the output to improve the transient response and stability.
| Part number | Order | Output options | Iout (Max) (A) | Vin (Max) (V) | Vin (Min) (V) | Vout (Max) (V) | Vout (Min) (V) | Fixed output options (V) | Package Group | Features | Regulated outputs (#) | Operating temperature range (C) | Thermal resistance θJA (°C/W) | Noise (uVrms) | Approx. price (US$) | Rating | PSRR @ 100 KHz (dB) | Accuracy (%) | Dropout voltage (Vdo) (Typ) (mV) | Iq (Typ) (mA) | Package size: mm2:W x L (PKG) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LMS8117A |
|
Adjustable Output
Fixed Output |
1 | 15 | 2.5 | 13.75 | 1.5 |
1.8
3.3 |
SOT-223 | 4
TO-252 | 3 |
1 | 0 to 125 | 56 | 412.5 | 0.41 | 1ku | Catalog | 37 | 3 | 1200 | 5 |
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4)
3TO-252: 40 mm2: 6.1 x 6.58 (TO-252 | 3) |
|
| LM1117 |
|
Adjustable Output
Fixed Output |
0.8 | 15 | 2.6 | 13.8 | 1.25 |
1.8
2.5 3.3 5 |
DDPAK/TO-263 | 3
SOT-223 | 4 TO-220 | 3 TO-252 | 3 WSON | 8 |
1 |
-40 to 125
0 to 125 |
24 | 38 | 0.38 | 1ku | Catalog | 47 | 3 | 1200 | 5 |
3DDPAK/TO-263: 155 mm2: 15.24 x 10.16 (DDPAK/TO-263 | 3)
4SOT-223: 46 mm2: 7 x 6.5 (SOT-223 | 4) See datasheet (TO-220) 3TO-252: 40 mm2: 6.1 x 6.58 (TO-252 | 3) See datasheet (WSON) |
