Product overview

Description

LDH40 is a high accuracy voltage regulator designed to be directly connected to a car battery in automotive applications, or a generic battery connected in industrial applications. Extended input voltage up to 40 V makes the device capable to support a load dump transient, typical in automotive systems. Ultra-low quiescent current at light load increases the battery operation lifetime in always-on-standby systems.

The device is stabilized with a small ceramic capacitor on the input and output.

An enable logic control function puts the LDH40 in shutdown mode allowing a total current consumption lower than 0.3 µA. Thermal protection is also included.

The device is available in automotive grade in a very small footprint DFN package with wettable flank, allowing the maximum space saving in the PCB (printed circuit board) design and AOI (automated optical inspection).

  • All features

    • AEC-Q100 grade 1 qualified
    • Operating temperature range: -40 °C < TJ < +150 °C
    • Input voltage from 3.3 V to 40 V
    • Dropout voltage (700 mV typ. at 200 mA load)
    • Low ground current (2 μA typ. at no load)
    • ADJ from 1.2 V to 22 V
    • Output voltage tolerance: 0.5% at 25 °C
    • 200 mA guaranteed output current
    • Power Good
    • Logic-controlled electronic shutdown
    • Internal current limit
    • Thermal shutdown
    • Output active discharge function
    • Package options:
      • DFN 2x2 6L WF for automotive grade
      • SOT23 5L and DFN 6L for industrial

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STMicroelectronics - LDH40

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
LDH40PURY
Active
DFN 6L 2X2X 0.75 PITCH0.65 AG Automotive Ecopack3

LDH40PURY

Package:

DFN 6L 2X2X 0.75 PITCH0.65 AG

Material Declaration**:

PDF XML

Marketing Status

Active

Package

DFN 6L 2X2X 0.75 PITCH0.65 AG

Grade

Automotive

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

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Part Number
Marketing Status
Budgetary Price (US$)*/Qty
Order from ST
Order from distributors
Package
Packing Type
RoHS
Country of Origin
ECCN (US)
ECCN (EU)
Operating temperature (°C)
Grade
Output Voltage (V) (nom)
Output Tolerance (typ)
Output Current (A) (nom)
min
max
LDH40PURY
Available at distributors

Distributor availability of LDH40PURY

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Distributor reported inventory date:

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LDH40PURY Active

Budgetary Price (US$)*/Qty:
-
Package:
Packing Type:
RoHS:
Country of Origin:
ECCN (US):
ECCN (EU):

Part Number:

LDH40PURY

Operating Temperature (°C)

Min:

Max:

Grade:

Automotive

Output Voltage (V) (nom):

-

Output Tolerance (typ):

0.5

Output Current (A) (nom):

0.2

Distributor Name

Distributor reported inventory date:

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors