Datasheet Linear Technology LTC3835IUFD#PBF

Manufacturer	Linear Technology
Series	LTC3835
Part Number	LTC3835IUFD#PBF

Low I_Q Synchronous Step-Down Controller

Datasheets

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PDF, 423 Kb, Revision: E, File uploaded: Sep 23, 2017

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Packaging

Package	4x5 QFN-20
Package Code	UFD
Package Index	05-08-1711

Parametrics

Architecture	Constant Frequency Current Mode
Demo Boards	DC967B
Design Tools	LTspice File
Export Control	no
Features	Burst Mode, Tracking, External Synchronization, PLL, Power Good
Frequency	650 kHz
Frequency Sync Range	140kHz - 650kHz
Integrated Inductor	no
Ishutdown	10 µA
Isupply	0.08 mA
Max Phases	1
Monolithic	no
Number of Outputs	1
Operating Temperature Range	-40 to 85 °C
Output Current	20 A
Polyphase	no
Sense Resistor	Rsense
Switch Current	20 A
Synchronous	yes
Topology	Buck
Vin Max	36 V
Vin Min	4 V
Vout Max	10 V
Vout Maximum	10V
Vout Min	0.8 V
Vref Accuracy Over Temp	1 %

Eco Plan

RoHS

Compliant

Design Notes

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80ВµA Quiescent Current Synchronous Step-Down Controller Extends Battery Life in Automotive Applications &mdash DN1014
PDF, 103 Kb, File published: Dec 18, 2006
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advertisement 80ВµA Quiescent Current Synchronous Step-Down Controller Extends Battery Life in Automotive Applications вЂ“ Design Note 1014
Julian Zhu Introduction
Battery powered applications that have a signiп¬Ѓcant
amount of time in standby mode, require electrical circuits
to operate with a low quiescent current to preserve battery life. The LTC3835 synchronous step-down controller
is an excellent solution with its ultralow quiescent current (80ВµA). Other features make it uniquely qualiп¬Ѓed to
satisfy the needs of automotive applications. A wide 4V
to 36V input voltage range protects the supply against
high input voltage transients and is compatible with low
voltage cold crank conditions. The constant frequency
current-mode architecture with high-side inductor current sensing provides excellent line and load regulation
and reliable current limiting and sharing. The 0.8V to
10V output voltage range provides п¬‚exibility for a variety
of applications. Solution size is small due to the 650kHz
switching frequency, which reduces external component
sizes, and the integrated synchronous FET driver, which
keeps component count low. Furthermore, the LTC3835
provides high efп¬Ѓciency over a wide load range up to 20A.
Other important features include:
CLKOUT The output voltage can be ramped during start-up with
an adjustable soft-start or it can track an external ramp
signal. The controller can be synchronized to an external clock
via a phase-locked loop. The CLKOUT pin and current mode control allow interleaved operation of multiple parallel controllers for …

Model Line

Series: LTC3835 (8)

LTC3835EFE#PBF LTC3835EFE#TRPBF LTC3835EUFD#PBF LTC3835EUFD#TRPBF LTC3835IFE#PBF LTC3835IFE#TRPBF LTC3835IUFD#PBF LTC3835IUFD#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > Micropower Buck Regulators | External Power Switch Buck Controllers

Other Names:

LTC3835IUFDPBF, LTC3835IUFD PBF