LTC3826

Features: `Wide Output Voltage Range: 0.8V VOUT 10V`Ultralow Operating IQ: 30A (One Channel On)`Out-of-Phase Controllers Reduce Required InputCapacitance and Power Supply Induced Noise`OPTI-LOOP® Compensation Minimizes COUT`±1% Output Voltage Accuracy`Wide VIn Range: 4V to 36V Operation`Phas...

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SeekIC No. : 004402371 Detail

LTC3826: Features: `Wide Output Voltage Range: 0.8V VOUT 10V`Ultralow Operating IQ: 30A (One Channel On)`Out-of-Phase Controllers Reduce Required InputCapacitance and Power Supply Induced Noise`OPTI-LOOP&r...

floor Price/Ceiling Price

Part Number:
LTC3826
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/11/23

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Product Details

Description



Features:

`Wide Output Voltage Range: 0.8V VOUT 10V
`Ultralow Operating IQ: 30A (One Channel On)
`Out-of-Phase Controllers Reduce Required Input
Capacitance and Power Supply Induced Noise
`OPTI-LOOP® Compensation Minimizes COUT
`±1% Output Voltage Accuracy
`Wide VIn Range: 4V to 36V Operation
`Phase-Lockable Fixed Frequency 140kHz to 650kHz
`Selectable Continuous, Pulse Skipping or Low Ripple Burst Mode® Operation at Light Loads
`Dual N-Channel MOSFET Synchronous Drive
`Very Low Dropout Operation: 99% Duty Cycle
`Adjustable Output Voltage Soft-Start or Tracking
`Output Current Foldback Limiting
`Power Good Output Voltage Monitor
`Output Overvoltage Protection
`Low Shutdown IQ: 4A
`Internal LDO Powers Gate Drive from VIn or VOUT
`Small 5mm * 5mm QFn Package





Application

·Automotive Systems
·Battery-Operated Digital Devices
·Distributed DC Power Systems





Pinout






Specifications

Input Supply Voltage (VIN) ..................... 36V to 0.3V
Top Side Driver Voltages
(BOOST1, BOOST2) ............................... 42V to 0.3V
Switch Voltage (SW1, SW2) ...................... 36V to 5V
(BOOST1-SW1), (BOOST2-SW2) ............ 8.5V to 0.3V
RUN1, RUN2 ............................................. 7V to 0.3V
SENSE1+, SENSE2+, SENSE1,
SENSE2 Voltages ................................ 11V to 0.3V
PLLIN/MODE, PLLLPF, Voltages ......... INTVCC to 0.3V
PHASMD, FOLDDIS, TRACK/SS1, TRACK/SS2
Voltages ........................................... INTVCC to 0.3V
EXTVCC ................................................... 10V to 0.3V
ITH1, ITH2, VFB1, VFB2 Voltages .............. 2.7V to 0.3V
PGOOD1, PGOOD2 Voltages ................... 8.5V to 0.3V
Peak Output Current <10s (TG1, TG2, BG1, BG2) ....3A
Operating Temperature Range (Note 2)...40 to 85
Junction Temperature (Note 3) ............................ 125
Storage Temperature Range .................65 to 125





Description

The LTC®3826 is a high performance dual step-down switching regulator controller that drives all N-channel synchronous power MOSFET stages. A constant frequency current mode architecture allows a phase-lockable freq uency of up to 650kHz. Power loss and noise due to the ESR of the input capacitor are minimized by operating the two controller output stages out of phase.

The 30A no-load quiescent current extends operating life in battery powered systems. OPTI-LOOP compensation allows the transient response to be optimized over a wide r ange of output capacitance and ESR values. The LTC3826 features a precision 0.8V reference and a power good output indicator. A wide 4V to 36V input supply range encompasses all battery chemistries.

Independent TRACK/SS pins for each controller ramp the output voltage during start-up. Current foldback limits MOSFET heat dissipation during short-circuit conditions.

The PLLIN/MODE pin selects among Burst Mode operation, pulse skipping mode, or continuous inductor current mode at light loads. For a leaded package version (28-lead SSOP), see the LTC3826-1 data sheet.






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