ADI

LT8638SEV#PBF

3MHz Step-down type Adjustable 600mV~42V 12A LQFN-28(4x5) Voltage Regulators - DC DC Switching Regulators RoHS

LQFN-28(4x5)ROHS3 CompliantActive

Manufacturer: ADI
Manufacturer part #: LT8638SEV#PBF
Store part #: C7459645
Package / case: LQFN-28(4x5)
Category: Voltage Regulators - DC DC Switching Regulators
Packaging: Tray

Datasheet (PDF)

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16 in stock

#C7459645

Stock & price checked 6 days ago

Quantity	Unit price	Pack price
1+	₹2,610.72	₹2,610.72
10+	₹2,493.79	₹24,937.90
30+	₹2,291.45	₹68,743.50
100+	₹2,114.75	₹2,11,475.00

Quantity (min 1)

1 × ₹2,610.72

₹2,610.72

excl. GST

₹3,080.65 incl. 18% GST

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Standard pack: 490 per tray

LT8638SEV#PBF

₹2,610.72 for 1 + GST

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Specifications

Operating Temperature: -40℃~+125℃@(TJ)
Frequency - Switching: 3MHz
Function: Step-down type
Number of Outputs: 1
Features: EMI optimization (spread spectrum);Light load efficient mode;Frequency synchronization;External compensation;Adjustable soft-start;Operating status indication
Output Type: Adjustable
Topology: Buck
Operating Voltage: 2.8V~42V
Switch tube (built-in/external): Built-in
Output Voltage: 600mV~42V
Output Current: 12A
Quiescent Current: 90uA

Packaging & compliance

RoHS: ROHS3 Compliant
Lifecycle: Active
ECCN: EAR99
Packaging: Tray
Standard pack: 490 / Tray
Sold per: Piece
Minimum order: 1
Unit weight: 0.05 g

Overview

The LT8638S synchronous step-down regulator features second generation Silent Switcher architecture designed to minimize EMI emissions while delivering high efficiency at high switching frequencies. This includes the integration of input capacitors to optimize all the fast current loops inside and make it easy to achieve advertised EMI performance by reducing layout sensitivity. This performance makes the LT8638S ideal for noise sensitive applications and environments. The fast, clean, low overshoot switching edges enable high efficiency operation even at high switching frequencies, leading to a small overall solution size. Peak current mode control with a 25ns minimum on-time allows high step down ratios even at high switching frequencies. External compensation via the VC pin allows for fast transient response. PolyPhase operation allows multiple LT8638S regulators to run with interleaving phase shift to provide more output current. Burst Mode operation enables low standby current consumption, forced continuous mode can control frequency harmonics across the entire output load range, or spread spectrum operation can further reduce EMI emissions. Soft-start and tracking functionality is accessed via the SS pin, and an accurate input voltage UVLO threshold can be set using the EN/UV pin.

Applications

Automotive and Industrial Supplies
General Purpose Step-Down

Key features

Silent Switcher Architecture, Ultralow EMI Emissions on Any PCB, Eliminates PCB Layout Sensitivity
Internal Bypass Capacitors Reduce Radiated EMI, Optional Spread Spectrum Modulation
High Efficiency at High Frequency: Up to 96% Efficiency at 1MHz, 12VIN to 5VOUT; Up to 94% Efficiency at 2MHz, 12VIN to 5VOUT
Wide Input Voltage Range: 2.8V to 42V
10A Maximum Continuous, 12A Peak Transient Output
Fast Transient Response with External Compensation
Low Quiescent Current, Burst Mode Operation, 90μA Iq Regulating 12VIN to 5VOUT, Output Ripple <10mVPP
Reference Accuracy: ±1% Over Temperature
Fast Minimum Switch On-Time: 25ns
PolyPhase Operation: Up to 12 Phases
Low Dropout Under All Conditions: 45mV at 1A
Adjustable and Synchronizable: 200kHz to 3MHz
Output Soft-Start and Power Good
Safely Tolerates High Reverse Current
28-Lead 5mm × 4mm LQFN Package
AEC-Q100 Qualified for Automotive Applications