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SA24491TLQ

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High Efficiency, 36V Input, 1A Synchronous Step Down Regulator
Datasheet
SA24491TLQ High Efficiency, 36V Input, 1A Synchronous Step Down Regulator Datasheet
Part number SA24491TLQ
Channel(#) 1
Vin (min) (V) 4.5
Vin (max) (V) 36
Switching frequency (min)(kHz) 300
Switching frequency (max)(kHz) 2200
Vout (min) (V) 0.6
Vout (max) (V)
Iout (max) (A) 1
Vout2 (min)(V)
Vout2 (max )(V)
Iout2 (max)(A)
Vref accuracy (±%) 1
Vout accuracy(±%)
Control mode Peak current control
Duty cycle (max)(%) 95
Operation mode PFM
Iq (typ) (uA) 18
Features Enable,Power good,Auto-discharge,Fixed soft-start,UVP with hiccup,Low ISD,Adjustable switching frequency,Spread spectrum,Cycle by cycle overcurrent protection,Pre-bias startup
Package QFN2×2-12
Operating temperature range(°C) -40 to 125
Functional safety category Capable
• 4.5-36V Input Voltage Range
• Low RDS(ON) for Internal Switches (Top/Bottom): 130/75mΩ
• Low quiescent current: IQ = 18 µA (Typ.)
• Internal Compensation 
• Internal 1ms Soft-start Limits the Inrush Current
• Adjustable Switching Frequency Range: 300kHz to 2.2MHz
• Light Load Operating Mode:PFM
• Output Current Capability:1A
• ±1% 0.6V Reference Over -40°C~125°C
• Cycle-by-cycle Peak Current Limit
• Short-Circuit Protection
• Spread Spectrum Function
• Thermal Shutdown and Auto Recovery
• Compact Package: QFN2×2-12
• Automotive AEC- Q100 Grade 1 Qualified
The SA24491 is a high-efficiency synchronous step-down DC-DC converter capable of delivering a load current of 1A. It operates over a wide input voltage range of 4.5V to 36V and integrates main and synchronous MOSFET switches with very low RDS(ON) to minimize conduction loss. 
The SA24491 uses a peak current control architecture. The switching frequency is adjustable from 300kHz to 2.2MHz using an external resistor.  The SA24491 features ultra-low quiescent current to achieve high efficiency under light load conditions.  Additionally, the internal soft-start function limits inrush current during power-up. 
The SA24491 is available in a QFN2×2-12 Package.

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Technical & Design Documentation