0
ACTIVE
Rating |
Military |
Vin (max) (V) |
0.3 |
Vin (min) (V) |
-26 |
Iout (max) (A) |
1 |
Output options |
Adjustable Output |
Vout (max) (V) |
-3 |
Vout (min) (V) |
-24 |
Fixed output options (V) |
0 |
Noise (µVrms) |
200 |
PSRR at 100 KHz (dB) |
22 |
Iq (typ) (mA) |
0.7 |
Features |
Enable |
Thermal resistance θJA (°C/W) |
28 |
Load capacitance (min) (µF) |
1 |
Regulated outputs (#) |
1 |
Accuracy (%) |
5 |
Dropout voltage (Vdo) (typ) (mV) |
600 |
Operating temperature range (°C) |
-55 to 125 |
CFP (NAC)-16-62.9285 mm² 9.91 x 6.35
The LM2991 is a low dropout adjustable negative regulator with a output voltage range between −2V to −25V. The LM2991 provides up to 1A of load current and features a ^On /Off pin for remote shutdown capability.
The LM2991 uses new circuit design techniques to provide a low dropout voltage, low quiescent current and low temperature coefficient precision reference. The dropout voltage at 1A load current is typically 0.6V and a guaranteed worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with a 1A load current and an input-output voltage differential greater than 3V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (VO − VI
The LM2991 is short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when inadvertently overloaded for extended periods.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
