0
ACTIVE
Rating |
Catalog |
VO (V) |
1.24 |
Initial accuracy (max) (%) |
1.5 |
Iz for regulation (min) (µA) |
80 |
VO adj (min) (V) |
1.24 |
VO adj (max) (V) |
30 |
Reference voltage (V) |
adjustable |
Temp coeff (max) (ppm/°C) |
129, 138 |
Operating temperature range (°C) |
-40 to 85 |
Iout/Iz (max) (mA) |
15 |
SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8
The LMV431, LMV431A and LMV431B are precision 1.24 V shunt regulators capable of adjustment to 30 V. Negative feedback from the cathode to the adjust pin controls the cathode voltage, much like a non-inverting op amp configuration (Refer to Symbol and Functional Diagrams). A two-resistor voltage divider terminated at the adjust pin controls the gain of a 1.24 V band-gap reference. Shorting the cathode to the adjust pin (voltage follower) provides a cathode voltage of a 1.24 V.
The LMV431, LMV431A and LMV431B have respective initial tolerances of 1.5%, 1%, and 0.5%, and functionally lend themselves to several applications that require zener diode type performance at low voltages. Applications include a 3 V to 2.7 V low drop-out regulator, an error amplifier in a 3 V off-line switching regulator and even as a voltage detector. These parts are typically stable with capacitive loads greater than 10 nF and less than 50 pF.
The LMV431, LMV431A and LMV431B provide performance at a competitive price.
WELL LINK CHIPS GROUP CO.,LIMITED FLAT/RM 1802 BEVERLY HOUSE 93-107 LOCKHART ROAD WANCHAI HK
