Datasheet Linear Technology LTC1775

Manufacturer	Linear Technology
Series	LTC1775

High Power No RSENSE Current Mode Synchronous Step-Down Switching Regulator

Datasheets

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PDF, 307 Kb, Language: en, File uploaded: Sep 20, 2017, Pages: 24
High Power No RSENSE Current Mode Synchronous Step-Down Switching Regulator

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Packaging

	LTC1775CGN#PBF	LTC1775CGN#TRPBF	LTC1775CS#PBF	LTC1775CS#TRPBF	LTC1775IGN#PBF	LTC1775IGN#TRPBF	LTC1775IS#PBF	LTC1775IS#TRPBF
N	1	2	3	4	5	6	7	8
Package	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SO-16 Package Outline Drawing	SO-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SSOP-16 Package Outline Drawing	SO-16 Package Outline Drawing	SO-16 Package Outline Drawing
Package Code	GN	GN	S	S	GN	GN	S	S
Package Index	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1610 (S16)	05-08-1610 (S16)	05-08-1641 (GN16)	05-08-1641 (GN16)	05-08-1610 (S16)	05-08-1610 (S16)
Pin Count	16	16	16	16	16	16	16	16

Parametrics

Parameters / Models	LTC1775CGN#PBF	LTC1775CGN#TRPBF	LTC1775CS#PBF	LTC1775CS#TRPBF	LTC1775IGN#PBF	LTC1775IGN#TRPBF	LTC1775IS#PBF	LTC1775IS#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
Demo Boards	DC337A	DC337A	DC337A	DC337A	DC337A	DC337A	DC337A	DC337A
Design Tools	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model	LTspice Model
Export Control	no	no	no	no	no	no	no	no
Features	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization	Burst Mode, No Rsense, External Synchronization
Frequency, kHz	150	150	150	150	150	150	150	150
Frequency Sync Range	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz	150kHz to 225kHz
Integrated Inductor	no	no	no	no	no	no	no	no
Ishutdown, µA	15	15	15	15	15	15	15	15
Isupply, mA	0.5	0.5	0.5	0.5	0.5	0.5	0.5	0.5
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 70	0 to 70	0 to 70	0 to 70	-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	Buck	Buck	Buck	Buck	Buck	Buck	Buck
Vin Max, V	36	36	36	36	36	36	36	36
Vin Min, V	3.7	3.7	3.7	3.7	3.7	3.7	3.7	3.7
Vout Max, V	36	36	36	36	36	36	36	36
Vout Maximum	Vin	Vin	Vin	Vin	Vin	Vin	Vin	Vin
Vout Min, V	1.19	1.19	1.19	1.19	1.19	1.19	1.19	1.19
Vref Accuracy Over Temp, %	1	1	1	1	1	1	1	1

Eco Plan

	LTC1775CGN#PBF	LTC1775CGN#TRPBF	LTC1775CS#PBF	LTC1775CS#TRPBF	LTC1775IGN#PBF	LTC1775IGN#TRPBF	LTC1775IS#PBF	LTC1775IS#TRPBF
RoHS	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant

Articles

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High Current Positive-to-Negative Conversion with the LTC1775 No Rsense Controller &mdash LT Journal
PDF, 150 Kb, File published: Sep 1, 2000
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DESIGN IDEAS High Current Positive-to-Negative
Conversion with the LTC1775
No RSENSE Controller
by Christopher B. Umminger DESIGN IDEAS
High Current Positive-to-Negative
Conversion with the LTC1775
No RSENSE Controller . 19
Christopher B. Umminger PolyPhase Switcher Reduces Parts
Count for Smaller, Less Expensive
Mobile CPU Supply . 20
Wei Chen Performance Verification of
Low Noise, Low Dropout Regulators
. 24
Jim Williams and Todd Owen boost. It differs from the typical
LTC1775 buck converter applications
in several important ways. First, the
LTC1775 is connected between the
positive input voltage and the negative output voltage with the output of
the inductor connected to the system
ground. Thus, the LTC1775 and the
power MOSFET switches are exposed
to a voltage that is the sum of VIN +
|VOUT|, which must be kept below …

Model Line

Series: LTC1775 (8)

LTC1775CGN#PBF LTC1775CGN#TRPBF LTC1775CS#PBF LTC1775CS#TRPBF LTC1775IGN#PBF LTC1775IGN#TRPBF LTC1775IS#PBF LTC1775IS#TRPBF

Manufacturer's Classification

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