Low-IQ programmable shunt regulator offered in an ultra-small DQN package
Product details
Parameters
Package | Pins | Size
Features
- Reference voltage tolerance at 25°C
- 0.5% (B Grade)
- 1% (A Grade)
- Minimum typical output voltage: 2.5 V
- Adjustable output voltage: Vref to 36 V
- Operation from −40°C to +125°C (Q temp)
- Maximum temperature drift
- 17 mV (I Temp)
- 27 mV (Q Temp)
- 0.3-Ω Typical output impedance
- Sink-current capability
- Imin = 0.08 mA (max)
- IKA = 15 mA (max)
- Reference input current IREF: 0.4 µA (max)
- Deviation of reference input current over temperature, II(dev): 0.3 µA (max)
- Packages: 1-mm x 1-mm X2SON or SOT23-3
All trademarks are the property of their respective owners.
Description
The ATL43xLI device is a three-terminal adjustable shunt regulator, with specified thermal stability over applicable automotive, commercial, and military temperature ranges. The output voltage can be set to any value between Vref (approximately 2.5 V) and 36 V, with two external resistors. These devices have a typical output impedance of 0.3 Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacements for Zener diodes in many applications, such as onboard regulation, adjustable power supplies, and switching power supplies. This device is a pin-to-pin alternative to the TL431LI and TL432LI, with lower minimum operating current to help reduce system power consumption. The ATL432LI device has exactly the same functionality and electrical specifications as the ATL431LI device, but has a different pinout for the DBZ package. The ATL431LI is also offered in a tiny X2SON (1.00 mm x 1.00 mm) package which makes it ideal for space constraint applications.
The ATL431LI device is offered in two grades, with initial tolerances (at 25°C) of 0.5%, and 1%, for the B and A grade, respectively. In addition, low output drift versus temperature ensures good stability over the entire temperature range.
The ATL43xLIxQ devices are characterized for operation from –40°C to +125°C.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The ATL431EVM-001 evaluation module (EVM) features the functionality and adjustability of the ATL431 by letting you program the cathode voltage with various resistor values. You can also set the cathode current using the various resistors in series with the supply (...)
Features
- Adjustable regulated output from 2.5 V to 36 V
- Very-low operating current: IKA(min) = 35 µA (max) and IREF = 150 nA (max)
- Extended cathode current range from 35 µA to 100 mA
- Low output impedance of 0.3 Ω (max)
- Small form factor
- Ease of use
- Multiple gain setting options
- Stability test availability
Description
The ATL431LI evaluation module (EVM) is an adjustable-voltage reference board that evaluates the ATL431LI device in the super-thin small-outline no-lead (X2SON) DQN small-form-factor package.
Features
- Ultra-small 3-pin DQN package
- Adjustable-voltage reference output
- High accuracy
- Low-current voltage reference
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
Design files
-
download PMP22396 BOM.pdf (350KB) -
download PMP22396 Assembly Drawing.pdf (563KB) -
download PMP22396 PCB.pdf (4838KB) -
download PMP22396 CAD Files.zip (4669KB) -
download PMP22396 Gerber.zip (1204KB)
Design files
-
download PMP30825 BOM.pdf (68KB) -
download PMP30825 Assembly Drawing.pdf (135KB) -
download PMP30825 PCB.pdf (169KB) -
download PMP30825 CAD Files.zip (1004KB) -
download PMP30825 Gerber.zip (1004KB)
Design files
-
download PMP22151 BOM.pdf (292KB) -
download PMP22151 Assembly Drawing.pdf (131KB) -
download PMP22151 PCB.pdf (587KB) -
download PMP22151 CAD Files.zip (880KB) -
download PMP22151 Gerber.zip (449KB)
Design files
-
download PMP30720 BOM.pdf (48KB) -
download PMP30720 Assembly Drawing.pdf (53KB) -
download PMP30720 PCB.pdf (101KB) -
download PMP30720 CAD Files.zip (1494KB) -
download PMP30720 Gerber.zip (1465KB)
Design files
Design files
-
download PMP22021 Assembly Drawing.pdf (76KB) -
download PMP22021 PCB.pdf (439KB) -
download PMP22021 CAD Files.zip (3191KB) -
download PMP22021 Gerber.zip (539KB) -
download PMP22021 BOM (Rev. A).pdf (285KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOT-23 (DBZ) | 3 | View options |
X2SON (DQN) | 4 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.