SY81012VDC

Silergy
High Efficiency, 16V/12A Synchronous Step Down Regulator
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Технические характеристики

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Корпус QFN193X4
Тип преобразователя
Режим преобразования
Входное напряжение
Выходное напряжение
Максимальный выходной ток
Кол-во выходов
Частота преобразования
Ток собственного потребления
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SY81012 High Efficiency, 16V/12A Synchronous Step Down Regulator General Description Features  Wide Input Voltage Range: ▪ 3.6V to 16V if VCC is Supplied by Internal LDO ▪ 2.7V to 16V if VCC is Supplied by External 3.3V DC Source  Low RDS(ON) for Internal Switches (Top/Bottom): 12.6mΩ/4.3mΩ  0.6V ±1% Voltage Reference Over Temperature Range (TJ = -40°C to 125°C)  Adopt Constant-on-time Architecture and Frequency Lock Loop  Instant PWM Architecture to Achieve Fast Transient Response.  600kHz, 800kHz and 1000kHz Switching Frequency Operation Selected by MODE Pin  PFM/FCCM Light Load Operation Mode Selected by MODE pin.  Programmable Bottom Valley Limit by ILMT pin  Reliable Protection Mode: Auto-Recovery Mode for UVP, UVLO, OTP and OVP  Cycle-by-cycle Valley Current Limit and Peak Current Limit  Cycle-by-cycle Reverse Current Limit  Internal Soft-start Limits the Inrush Current  Programmable Soft-start Time by SS Pin  Smooth Soft-start with Output Pre-biased Function  Adjustable Input Voltage UVLO by EN Pin  Power Good Indicator  Differential Output Voltage Remote Sense  Output Discharge Function  RoHS Compliant and Halogen Free  Compact Package: QFN3×4-19 The SY81012 develops a high efficiency synchronous step-down DC/DC regulator capable of delivering 12A current. The device integrates highside power switch and low-side synchronous rectifier with very low RDS(ON) to minimize the conduction loss. It provides accurate regulation for a variety of loads with an accurate ±1% voltage reference (VREF) over TJ= -40°C to 125°C. The SY81012 operates over a wide input voltage range from 2.7V to 16V. The DC/DC regulator adopts the instant PWM architecture to achieve fast transient responses for high step down applications. Cycle-by-cycle current limit, hiccup over current protection and thermal shutdown protect the device during an over current condition Ordering Information SY81012 □(□□)□ Temperature Code Package Code Optional Spec Code Ordering Number SY81012VDC Package type QFN3×4-19 Note Applications        Power Module Telecom and Networking Systems Servers LCD-TV/Net-TV/3DTV Set Top Box Notebook High Power AP Typical Application Efficiency vs. Load Current CBS=0.1μF (fSW=600kHz, FCCM, L=0.47μH/PCMB104T-R47MS) 100 BS IN LX CIN=10μF×2 External VCC Supply(opt.) VOUT=1.2V RFF=1kΩ CFF=220pF RPG=10kΩ PG 90 L=0.47μH R1=100kΩ R2=100kΩ VCC GNDS EN MODE VSENSE+ COUT=22μF×2 FBS 80 VSENSE- Load Efficiency (%) VIN=2.7V~16V 70 VIN=3.6V, VOUT=1.2V VIN=7.4V, VOUT=1.2V VIN=12V, VOUT=1.2V VIN=16V, VOUT=1.2V 60 50 40 30 CVCC=1μF ON/ OFF RILMT=4.5kΩ LIMT GND SS AGND CSS=200nF 20 RMODE=0Ω 10 0 0.001 0.01 0.1 1 10 Load Current (A) Figure1. Typical Application Circuit SY81012 Rev.0.9 © 2021 Silergy Corp. Figure2. Efficiency vs. Load Current 1 PDF
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Дата модификации: 11.07.2024

Размер: 370.8 Кб

7 стр.

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