LMV431ACM5X/NOPB LMV431AIM5X LMV431AIMFX/NOPB LMV431BCM5X/NOPB LMV431BIMF/NOPBLMV431BIMFX/NOPB Power Path Management IC
battery charge management ic
,power management integrated circuit
LMV431ACM5X/NOPB LMV431AIM5X LMV431AIMFX/NOPB LMV431BCM5X/NOPB LMV431BIMF/NOPBLMV431BIMFX/NOPB Power Path Management IC
1 Features
- Low-Voltage Operation/Wide Adjust Range (1.24 V/30 V)
-
0.5% Initial Tolerance (LMV431B)
-
Temperature Compensated for Industrial Temperature Range (39 PPM/°C for the LMV431AI)
-
Low Operation Current (55 μA)
-
Low Output Impedance (0.25 Ω)
-
Fast Turn-On Response
-
Low Cost
2 Applications
-
Shunt Regulator
-
Series Regulator
-
Current Source or Sink
-
Voltage Monitor
-
Error Amplifier
-
3-V Off-Line Switching Regulator
-
Low Dropout N-Channel Series Regulator
3 Description
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.
Device Information
|
PART NUMBER |
PACKAGE |
BODY SIZE (NOM) |
|
LMV431 |
SOT-23 (5) |
2.90 mm x 1.60 mm |
|
LMV431 |
TO-92 (3) |
4.30 mm x 4.30 mm |
|
LMV431 |
SOT-23 (3) |
2.92 mm x 1.30 mm |