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SA24481TLQ

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High Efficiency, 36V Input, 1A Synchronous Step Down Regulator
Datasheet
SA24481TLQ High Efficiency, 36V Input, 1A Synchronous Step Down Regulator Datasheet
Part number SA24481TLQ
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) 34.2
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,Low Iq,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
• Input Voltage Range: 4.5-36V
• 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 Limitation
• Short Circuit Protection
• Spread Spectrum Function
• Thermal Shutdown and Auto Recovery
• Compact Package: QFN2×2-12
• Automotive AEC-Q100 Grade 1 Qualified

The SA24481 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 SA24481 uses a peak current control scheme. The switching frequency is adjustable from 300kHz to 2.2MHz using an external resistor. The SA24481 features frequency reduction and ultralow quiescent operating to achieve high efficiency under light load. Additionally, the internal soft-start function limits inrush current during power-up. 

The SA24481 is available in a QFN2×2-12 Package.

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Technical & Design Documentation