Product Summary

Dual Buck Plus Single Boost Synchronous Controllers
Outputs Remain in Regulation Through Cold Crank
Down to 2.5V
Low Operating IQ: 55μA (One Channel On)
Wide Bias Input Voltage Range: 4.5V to 38V
Buck Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
Boost Output Voltage Up to 60V
RSENSE or DCR Current Sensing
100% Duty Cycle for Boost Synchronous MOSFET
Even in Burst Mode? Operation
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode Operation at Light Loads
Very Low Buck Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Low Shutdown IQ: 14μA
Small 38-Pin 5mm × 7mm QFN and TSSOP Packages



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Features

Dual Buck Plus Single Boost Synchronous Controllers
Outputs Remain in Regulation Through Cold Crank
Down to 2.5V
Low Operating IQ: 55μA (One Channel On)
Wide Bias Input Voltage Range: 4.5V to 38V
Buck Output Voltage Range: 0.8V ≤ VOUT ≤ 24V
Boost Output Voltage Up to 60V
RSENSE or DCR Current Sensing
100% Duty Cycle for Boost Synchronous MOSFET
Even in Burst Mode? Operation
Phase-Lockable Frequency (75kHz to 850kHz)
Programmable Fixed Frequency (50kHz to 900kHz)
Selectable Continuous, Pulse-Skipping or Low Ripple
Burst Mode Operation at Light Loads
Very Low Buck Dropout Operation: 99% Duty Cycle
Adjustable Output Voltage Soft-Start or Tracking
Low Shutdown IQ: 14μA
Small 38-Pin 5mm × 7mm QFN and TSSOP Packages

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC3859AEUHF#PBF
LTC3859AEUHF#PBF


IC REG CTRLR BST PWM CM 38-QFN

Data Sheet

0-1: $6.33
1-25: $4.24
25-100: $3.61
Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LTC3025
LTC3025

Other


Data Sheet

Negotiable 
LTC3025EDC#TR
LTC3025EDC#TR


IC REG LDO ADJ .3A 6DFN

Data Sheet

0-5000: $0.88
LTC3025EDC#TRM
LTC3025EDC#TRM


IC REG LDO ADJ .3A 6DFN

Data Sheet

0-5000: $0.88
LTC3025EDC#TRMPBF
LTC3025EDC#TRMPBF


IC REG LDO ADJ .3A 6DFN

Data Sheet

0-1000: $0.88
LTC3025EDC#TRPBF
LTC3025EDC#TRPBF


IC REG LDO ADJ .3A 6DFN

Data Sheet

0-2500: $0.88
LTC3025EDC-1#TRMPBF
LTC3025EDC-1#TRMPBF


IC REG LDO ADJ .5A 6DFN

Data Sheet

0-1000: $0.97