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Fixed Ratio High Power Inductorless (Charge Pump) DC/DC Controller

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LTC7820EUFD#PBF General Description

The LTC7820 is a fixed ratio high voltage high power switched capacitor/charge pump controller. The device includes four N-channel MOSFET gate drivers to drive external power MOSFETs in voltage divider, doubler or inverter configurations. The device achieves a 2:1 step-down ratio from an input voltage as high as 72V, a 1:2 step-up ratio from an input voltage as high as 36V, or a 1:1 inverting ratio from an input voltage up to 36V. Each power MOSFET is switched with 50% duty cycle at a constant pre-programmed switching frequency. System efficiency can be optimized to over 99%. The LTC7820 provides a small and cost effective solution for high power, non-isolated intermediate bus applications with fault protection.


Key Features

  • Low Profile, High Power Density, Capable of 500W+
  • Soft Switching: 99% Peak Efficiency and Low EMI
  • VIN Max for Voltage Divider (2:1): 72V
  • VIN Max for Voltage Doubler (1:2)/Inverter (1:1): 36V
  • Wide Bias VCC Range: 6V to 72V
  • Soft Startup into Steady State Operation
  • 6.5V to 40V EXTVCC Input for Improved Efficiency
  • Input Current Sensing and Overcurrent Protection
  • Wide Operating Frequency Range: 100kHz to 1MHz
  • Output Short-Circuit/OV/UV Protections with Programmable Timer and Retry
  • Thermally Enhanced 28-Pin 4mm × 5mm QFN Package


  • Bus Converters
  • High Power Distributed Power Systems
  • Communications Systems
  • Industrial Applications


Manufacturer: Analog Devices Inc. Product Category: Switching Controllers
RoHS: Y Number of Outputs: 1 Output
Switching Frequency: 1 MHz Duty Cycle - Max: 50 %
Input Voltage: 6 V to 72 V Output Voltage: 6 V to 72 V
Output Current: 93 mA Minimum Operating Temperature: - 40 C
Maximum Operating Temperature: + 125 C Mounting Style: SMD/SMT
Package / Case: QFN-28 Packaging: Tube
Isolation: Non-Isolated Output Type: Adjustable
Product: Non-Isolated / POL Series: LTC7820
Brand: Analog Devices / Linear Technology Operating Supply Current: 60 uA
Product Type: Switching Controllers Factory Pack Quantity: 73
Subcategory: PMIC - Power Management ICs Unit Weight: 0.008854 oz
Tags LTC7820, LTC782, LTC78, LTC7, LTC Manufacturer Analog Devices Inc.
Product Category Switching Controllers RoHS Details
Topology Charge Pump Number of Outputs 1 Output
Switching Frequency 1 MHz Duty Cycle - Max 50 %
Input Voltage 6 V to 72 V Output Voltage 6 V to 72 V
Output Current 93 mA Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 125 C Mounting Style SMD/SMT
Package / Case QFN-28 Brand Analog Devices
Isolation Non-Isolated Operating Supply Current 60 uA
Output Type Adjustable Product Non-Isolated / POLs
Product Type Switching Controllers Series LTC7820
Factory Pack Quantity 73 Subcategory PMIC - Power Management ICs
Unit Weight 0.008854 oz

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Availability: 7063 PCS

Qty. Unit Price(USD) Ext. Price
1+ $8.629 $8.63
200+ $3.340 $668.00
500+ $3.223 $1,611.50
1000+ $3.164 $3,164.00

The prices below are for reference only.