LTC1266IS#TR datasheet, PDF - EEWORLD Datasheet

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LTC1266IS#TR: DescriptionSwitching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs; CategoryPower/power management The power supply circuit; File Size243KB，20 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC1266IS#TR Overview

Switching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs

LTC1266IS#TR Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	ADI
package instruction	SOP,
Reach Compliance Code	compliant
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	CONSTANT OFF TIME
Maximum input voltage	18 V
Minimum input voltage	3.5 V
Nominal input voltage	10 V
JESD-30 code	R-PDSO-G16
JESD-609 code	e0
length	9.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	255
Certification status	Not Qualified
Maximum seat height	1.752 mm
surface mount	YES
Switch configuration	PUSH-PULL
Maximum switching frequency	400 kHz
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	40
width	3.9 mm

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LTC1266

LTC1266-3.3/LTC1266-5

Synchronous Regulator

Controller for

N- or P-Channel MOSFETs

FEATURES

DESCRIPTIO

Ultrahigh Efficiency: Over 95% Possible

Drives N-Channel MOSFET for High Current or

P-Channel MOSFET for Low Dropout

Pin Selectable Burst Mode Operation

1% Output Accuracy (LTC1266A)

Pin Selectable Phase of Topside Driver for Boost

or Step-Down Operation

Wide V

Range: 3.5V to 20V

On-Chip Low-Battery Detector

High Efficiency Maintained Over Large Current Range

Low 170µA Standby Current at Light Loads

Current Mode Operation for Excellent Line and Load

Transient Response

Logic Controlled Micropower Shutdown: I

< 40µA

Short-Circuit Protection

Synchronous Switching with Nonoverlaping Gate Drives

Available in 16-Pin Narrow SO Package

The LTC

1266 series is a family of synchronous switching

regulator controllers featuring automatic Burst Mode

operation to maintain high efficiencies at low output

currents. These devices drive external power MOSFETs at

switching frequencies up to 400kHz using a constant off-

time current mode architecture providing constant ripple

current in the inductor. They can drive either an N-channel

or a P-channel topside MOSFET.

The operating current level is user-programmable via an

external current sense resistor. Wide input supply range

allows operation from 3.5V to 18V (20V maximum).

Constant off-time architecture provides low dropout regu-

lation limited only by the R

DS(ON)

of the topside MOSFET

(when using the P-channel) and the resistance of the

inductor and current sense resistor.

The LTC1266 series combines synchronous switching for

maximum efficiency at high currents with an automatic

low current operating mode, called Burst Mode operation,

which reduces switching losses. Standby power is re-

duced to only 1mW at V

= 5V (at I

OUT

= 0). Load currents

in Burst Mode operation are typically 0mA to 500mA.

, LTC and LT are registered trademarks of Linear Technology Corporation.

Burst Mode is a trademark of Linear Technology Corporation.

APPLICATIO S

Notebook and Palmtop Computers

Portable Instruments

Cellular Telephones

DC Power Distribution Systems

GPS Systems

TYPICAL APPLICATIO

4V TO 9V

MBR0530T1

100µF

×2

LOW BAT OUT

PINV

PWR V

OUT

TDRIVE

SENSE

–

BDRIVE

PGND

1000pF

N-CHANNEL

Si9410

MBRS130LT3

1266 TA01

0.1µF

N-CHANNEL

Si9410

5µH

100k

LOW BAT IN

LTC1266-3.3

0V = NORMAL

>1.5V = SHUTDOWN

470Ω

3300pF

SHDN

BINH

SGND

OUT

3.3V

EFFICIENCY (%)

SENSE

0.02Ω

180pF

OUT

330µF

*TOKO 919AS-4R7M

Figure 1. High Efficiency Step-Down Converter

LTC1266-3.3 Efficiency

100

= 5V

0.01

0.1

LOAD CURRENT (A)

1266 TA02

LTC1266IS#TR Related Products

	LTC1266IS#TR	LTC1266ACS	LTC1266CS-3.3#TR	LTC1266ACS#TR	LTC1266CS-5	LTC1266IS-5#TR	LTC1266IS-3.3	LTC1266IS-3.3#TR	LTC1266CS-5#TR
Description	Switching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Voltage Regulators LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Voltage Regulators LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Voltage Regulators LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Voltage Regulators LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Voltage Regulators LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs	Switching Regulator LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs
Is it Rohs certified?	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible	incompatible
package instruction	SOP,	SOP,	0.150 INCH, PLASTIC, SOP-16	SOP,	SOP,	SOP,	SOP,	SOP,	SOP,
Reach Compliance Code	compliant	not_compliant	not_compliant	not_compliant	not_compliant	compliant	not_compliant	compliant	not_compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER	SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME	CONSTANT OFF TIME
Maximum input voltage	18 V	18 V	18 V	18 V	18 V	18 V	18 V	18 V	18 V
Minimum input voltage	3.5 V	3.5 V	3.5 V	3.5 V	3.5 V	3.5 V	3.5 V	3.5 V	3.5 V
Nominal input voltage	10 V	10 V	10 V	10 V	10 V	10 V	10 V	10 V	10 V
JESD-30 code	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16	R-PDSO-G16
JESD-609 code	e0	e0	e0	e0	e0	e0	e0	e0	e0
length	9.9 mm	9.9 mm	9.9 mm	9.9 mm	9.9 mm	9.9 mm	9.9 mm	9.9 mm	9.9 mm
Humidity sensitivity level	1	1	1	1	1	1	1	1	1
Number of functions	1	1	1	1	1	1	1	1	1
Number of terminals	16	16	16	16	16	16	16	16	16
Maximum operating temperature	85 °C	70 °C	70 °C	70 °C	70 °C	85 °C	85 °C	85 °C	70 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	SOP	SOP	SOP	SOP	SOP	SOP	SOP
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	255	235	235	235	235	255	235	255	235
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.752 mm	1.752 mm	1.752 mm	1.752 mm	1.752 mm	1.752 mm	1.752 mm	1.752 mm	1.752 mm
surface mount	YES	YES	YES	YES	YES	YES	YES	YES	YES
Switch configuration	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL	PUSH-PULL
Maximum switching frequency	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz	400 kHz
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	TIN LEAD	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	40	20	20	20	20	40	20	40	20
width	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm	3.9 mm
Maker	ADI	ADI	ADI	-	-	ADI	ADI	ADI	-
Nominal output voltage	-	1.25 V	3.3 V	1.25 V	5 V	5 V	3.3 V	3.3 V	5 V
Maximum supply current (Isup)	-	3 mA	3 mA	3 mA	3 mA	-	-	-	3 mA

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