Datasheet Linear Technology LTC3703-5

Manufacturer	Linear Technology
Series	LTC3703-5

60V Synchronous Switching Regulator Controller

Datasheets

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PDF, 386 Kb, Language: en, File uploaded: Sep 22, 2017, Pages: 32
60V Synchronous Switching Regulator Controller

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Packaging

	LTC3703EG-5#PBF	LTC3703EG-5#TRPBF	LTC3703EGN-5#PBF	LTC3703EGN-5#TRPBF	LTC3703IG-5#PBF	LTC3703IG-5#TRPBF	LTC3703IGN-5#PBF	LTC3703IGN-5#TRPBF
N	1	2	3	4	5	6	7	8
Package	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-28 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing
Package Code	G	G	GN	GN	G	G	GN	GN
Package Index	05-08-1640 (G28)	05-08-1640 (G28)	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1640 (G28)	05-08-1640 (G28)	05-08-1641 (GN16)	05-08-1641 (GN16)
Pin Count	28	28	16	16	28	28	16	16

Parametrics

Parameters / Models	LTC3703EG-5#PBF	LTC3703EG-5#TRPBF	LTC3703EGN-5#PBF	LTC3703EGN-5#TRPBF	LTC3703IG-5#PBF	LTC3703IG-5#TRPBF	LTC3703IGN-5#PBF	LTC3703IGN-5#TRPBF
Architecture	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode	Constant Frequency Current Mode
Design Tools	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File	LTspice File
Export Control	no	no	no	no	no	no	no	no
Features	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization	No Rsense, Resistor Set Frequency, External Synchronization
Frequency, kHz	600	600	600	600	600	600	600	600
Frequency Adjust Range	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz	100kHz to 600kHz
Frequency Sync Range	Up to 600kHz	Up to 600kHz	Up to 600kHz	Up to 600kHz	Up to 600kHz	Up to 600kHz	Up to 600kHz	Up to 600kHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	25	25	25	25	25	25	25	25
Isupply, mA	1.7	1.7	1.7	1.7	1.7	1.7	1.7	1.7
Max Phases	1	1	1	1	1	1	1	1
Monolithic	no	no	no	no	no	no	no	no
Number of Outputs	1	1	1	1	1	1	1	1
Operating Temperature Range, °C	0 to 85	0 to 85	0 to 85	0 to 85	-40 to 85	-40 to 85	-40 to 85	-40 to 85
Output Current, A	20	20	20	20	20	20	20	20
Polyphase	no	no	no	no	no	no	no	no
Sense Resistor	None	None	None	None	None	None	None	None
Switch Current, A	20	20	20	20	20	20	20	20
Synchronous	yes	yes	yes	yes	yes	yes	yes	yes
Topology	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost	Buck, Boost
Vin Max, V	60	60	60	60	60	60	60	60
Vin Min, V	9.3	9.3	9.3	9.3	9.3	9.3	9.3	9.3
Vout Max, V	55.8	55.8	55.8	55.8	55.8	55.8	55.8	55.8
Vout Maximum	100V	100V	100V	100V	100V	100V	100V	100V
Vout Min, V	0.8	0.8	0.8	0.8	0.8	0.8	0.8	0.8
Vref Accuracy Over Temp, %	1	1	1	1	1	1	1	1
Vswitch Max, V	100	100	100	100	100	100	100	100

Eco Plan

	LTC3703EG-5#PBF	LTC3703EG-5#TRPBF	LTC3703EGN-5#PBF	LTC3703EGN-5#TRPBF	LTC3703IG-5#PBF	LTC3703IG-5#TRPBF	LTC3703IGN-5#PBF	LTC3703IGN-5#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Design Notes

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Buck or Boost: Rugged, Fast 60V Synchronous Controller Does Both &mdash DN370
PDF, 96 Kb, File published: Jun 28, 2005
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advertisement Buck or Boost: Rugged, Fast 60V Synchronous Controller
Does Both вЂ“ Design Note 370
Greg Dittmer
Introduction
Automotive, telecom and industrial systems are harsh,
unforgiving environments that demand robust electronic systems. For example, an automotive battery
system may be a nominal 12V, 24V or 42V, but load
dump conditions can generate transients up to 60V.
The LTC В®3703-5 is a synchronous switching regulator
controller that can directly step down input voltages up
to 60V and withstand transients up to 80V, making it
ideal for harsh environments. The ability to step down
the high input voltage directly allows a simple single
inductor topology, resulting in a compact high performance power supplyвЂ”in contrast to the low side drive
topologies that require bulky, expensive transformers. multiple MOSFETs are used for high current applications. Other features include: Low minimum on-time (200ns) for low duty cycle
applications Precise 0.8V В±1% reference Programmable current limit utilizing the voltage drop
across the synchronous MOSFET to eliminate the
need for a current sense resistor Programmable operating frequency (100kHz to
600kHz) Low shutdown current (25ОјA), external clock synchronization input and selectable pulse skip mode
operation Feature Rich Controller
The LTC3703-5 drives external logic-level N-channel
MOSFETs using a constant frequency, voltage mode
architecture. A high bandwidth error ampliп¬Ѓer and …

Articles

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Synchronous Switching Regulator Controller Allows Inputs up to 100V &mdash LT Journal
PDF, 433 Kb, File published: Mar 25, 2005
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DESIGN FEATURES Synchronous Switching Regulator
Controller Allows Inputs up to 100V
by Greg Dittmer Introduction
Industrial, automotive, and telecom
systems create harsh, unforgiving
environments that demand robust
electronic systems. In telecom systems
the input rails can vary from 36V to
72V, with transients as high as 100V.
In automotive systems the DC battery voltage may be 12V, 24V, or 42V
with load dump conditions causing
transients up to 60V.
Until now, no synchronous buck
(or boost) control IC has been capable
of operating at 100V, so solutions
have been limited to low-side drive
topologies that utilize expensive and
bulky transformers. The LTC3703 is a
100V synchronous switching regulator
controller that can directly step-down
high input voltages using a single
inductor, thus providing a compact
high performance power supply for …

Model Line

Series: LTC3703-5 (8)

LTC3703EG-5#PBF LTC3703EG-5#TRPBF LTC3703EGN-5#PBF LTC3703EGN-5#TRPBF LTC3703IG-5#PBF LTC3703IG-5#TRPBF LTC3703IGN-5#PBF LTC3703IGN-5#TRPBF

Manufacturer's Classification

Power Management > Switching Regulator > Step-Down (Buck) Regulators > High Input Voltage Buck | External Power Switch Buck Controllers
Power Management > Switching Regulator > Step-Up (Boost) Regulators > External Power Switch Boost