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LTC4419IDD#PBF
Electronics Part Number
LTC4419IDD#PBF-WXManufacturer
Analog Devices, Inc.
LTC4419IDD#PBF
Description
10DFN Power Source Selector Switch ICInventory
235 Pcs New Original In Stock
10-DFN (3x3) OR controller: N-channel 2:1 source switch with low voltage drop; ideal for power muxing in portable, server, and telecom battery-backup circuits.
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Basic cost: USD 70.00
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Technical Specifications
Category
Power Management (PMIC), Display Drivers
Manufacturer
Analog Devices, Inc.
Packaging
Tape & Reel (TR)
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-SSOP (0.154", 3.90mm Width)
Series
-
Base Product Number
MAX6951
Product Status
Active
Display Type
LED
Current - Supply
10 mA
Voltage - Supply
2.7V ~ 5.5V
Configuration
7 Segment
Supplier Device Package
16-QSOP
Interface
3-Wire Serial
Digits or Characters
8 Digits
Data Sheet Document (D)
Datasheets
Download MAX6951CEE+T Product Specification (PDF)
HTML Datasheet
MAX6951CEE+T-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MAX6951CEE+CT MAX6951CEE+T-DG MAX6951CEE+TR MAX6951CEE+DKR
Standard Package
2,500
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Frequently Asked Questions (FAQ)
What are the key reliability risks when using the MAX6951CEE+T in a high-vibration industrial enviro
The MAX6951CEE+T’s 16-QSOP package, while compact, has limited mechanical robustness under sustained vibration due to its small lead size and surface-mount construction. In industrial settings with motors, pumps, or moving machinery, this increases the risk of solder joint fatigue and eventual open circuits. To mitigate this, use a conformal coating to reduce stress on joints, implement underfill if board space allows, and ensure proper PCB layout with adequate pad design and thermal relief. Additionally, secure the PCB with mechanical fasteners near the IC to minimize flexing. Always perform thermal cycling and vibration testing during prototype validation to catch early failures.
Can the MAX6951CEE+T reliably replace a legacy MAX6950 in an existing 5V system without firmware cha
While the MAX6951CEE+T is functionally similar to the MAX6950 and shares the same 3-wire serial interface and 5V supply compatibility, it is not a drop-in replacement due to subtle timing differences in the serial protocol and slightly different internal decoding logic. Specifically, the MAX6951 uses a different blanking behavior during digit multiplexing, which may cause display artifacts if the host controller assumes MAX6950 timing. You must review and potentially adjust your firmware’s clock timing and blanking intervals. Always validate display stability across all digits under worst-case refresh rates before full deployment.
How does the MAX6951CEE+T handle voltage transients on the V+ line in automotive 12V-derived systems
The MAX6951CEE+T operates from 2.7V to 5.5V, so in automotive applications where it's powered from a regulated 5V rail derived from 12V, it remains vulnerable to load dump spikes, jump starts, or inductive transients that can exceed its absolute maximum ratings. Although internal ESD protection is present, it is insufficient for automotive-grade transients. You must add external protection: a TVS diode (e.g., SMAJ5.0A) on the 5V rail, combined with a series current-limiting resistor and bulk capacitance (10–100 µF) close to the IC. This prevents latch-up and ensures long-term reliability under ISO 7637-2 pulse conditions.
Is it safe to drive high-brightness LEDs with the MAX6951CEE+T beyond the typical 25 mA segment curr
The MAX6951CEE+T is rated for up to 25 mA per segment, but pushing beyond this—even briefly—can cause localized heating in the 16-QSOP package, which has limited thermal dissipation (θJA ≈ 100°C/W). Exceeding 25 mA increases the risk of thermal runaway, especially when multiple segments are lit simultaneously. If high brightness is required, use external current-boosting transistors (e.g., small NPN arrays like ULN2003) controlled by the MAX6951’s digit drivers, or reduce duty cycle via software dimming. Always monitor junction temperature in your enclosure and derate current if ambient exceeds 50°C.
What layout considerations are critical when placing the MAX6951CEE+T on a dense PCB to avoid displa
Poor PCB layout can induce noise on the 3-wire serial lines (CLK, DATA, LOAD), leading to corrupted digit data or flicker due to misinterpreted commands. Keep serial traces short and away from high-speed digital or power lines. Use a ground plane beneath the MAX6951CEE+T and place decoupling capacitors (100 nF ceramic) as close as possible to the V+ and GND pins. Avoid routing high-current LED return paths near the signal lines, as ground bounce can affect logic thresholds. For long LED traces, use Kelvin sensing or separate return paths to minimize IR drop and ensure consistent brightness across all 8 digits.
What are the key reliability risks when using the MAX6951CEE+T in a high-vibration industrial enviro
The MAX6951CEE+T’s 16-QSOP package, while compact, has limited mechanical robustness under sustained vibration due to its small lead size and surface-mount construction. In industrial settings with motors, pumps, or moving machinery, this increases the risk of solder joint fatigue and eventual open circuits. To mitigate this, use a conformal coating to reduce stress on joints, implement underfill if board space allows, and ensure proper PCB layout with adequate pad design and thermal relief. Additionally, secure the PCB with mechanical fasteners near the IC to minimize flexing. Always perform thermal cycling and vibration testing during prototype validation to catch early failures.
Can the MAX6951CEE+T reliably replace a legacy MAX6950 in an existing 5V system without firmware cha
While the MAX6951CEE+T is functionally similar to the MAX6950 and shares the same 3-wire serial interface and 5V supply compatibility, it is not a drop-in replacement due to subtle timing differences in the serial protocol and slightly different internal decoding logic. Specifically, the MAX6951 uses a different blanking behavior during digit multiplexing, which may cause display artifacts if the host controller assumes MAX6950 timing. You must review and potentially adjust your firmware’s clock timing and blanking intervals. Always validate display stability across all digits under worst-case refresh rates before full deployment.
How does the MAX6951CEE+T handle voltage transients on the V+ line in automotive 12V-derived systems
The MAX6951CEE+T operates from 2.7V to 5.5V, so in automotive applications where it's powered from a regulated 5V rail derived from 12V, it remains vulnerable to load dump spikes, jump starts, or inductive transients that can exceed its absolute maximum ratings. Although internal ESD protection is present, it is insufficient for automotive-grade transients. You must add external protection: a TVS diode (e.g., SMAJ5.0A) on the 5V rail, combined with a series current-limiting resistor and bulk capacitance (10–100 µF) close to the IC. This prevents latch-up and ensures long-term reliability under ISO 7637-2 pulse conditions.
Is it safe to drive high-brightness LEDs with the MAX6951CEE+T beyond the typical 25 mA segment curr
The MAX6951CEE+T is rated for up to 25 mA per segment, but pushing beyond this—even briefly—can cause localized heating in the 16-QSOP package, which has limited thermal dissipation (θJA ≈ 100°C/W). Exceeding 25 mA increases the risk of thermal runaway, especially when multiple segments are lit simultaneously. If high brightness is required, use external current-boosting transistors (e.g., small NPN arrays like ULN2003) controlled by the MAX6951’s digit drivers, or reduce duty cycle via software dimming. Always monitor junction temperature in your enclosure and derate current if ambient exceeds 50°C.
What layout considerations are critical when placing the MAX6951CEE+T on a dense PCB to avoid displa
Poor PCB layout can induce noise on the 3-wire serial lines (CLK, DATA, LOAD), leading to corrupted digit data or flicker due to misinterpreted commands. Keep serial traces short and away from high-speed digital or power lines. Use a ground plane beneath the MAX6951CEE+T and place decoupling capacitors (100 nF ceramic) as close as possible to the V+ and GND pins. Avoid routing high-current LED return paths near the signal lines, as ground bounce can affect logic thresholds. For long LED traces, use Kelvin sensing or separate return paths to minimize IR drop and ensure consistent brightness across all 8 digits.
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Sep 15 2026
