LTC3250ES6-1.2#TR datasheet, PDF

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LTC3250ES6-1.2#TR: DescriptionIC reg buck 1.2V 0.25a sot23-6; CategoryPower/power management The power supply circuit; File Size430KB，2 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC3250ES6-1.2#TR Overview

IC reg buck 1.2V 0.25a sot23-6

LTC3250ES6-1.2#TR Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SOT
package instruction	LSSOP, TSOP6,.11,37
Contacts	6
Manufacturer packaging code	S6
Reach Compliance Code	_compli
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHED CAPACITOR REGULATOR
Maximum input voltage	5.5 V
Minimum input voltage	2.7 V
Nominal input voltage	3.6 V
JESD-30 code	R-PDSO-G6
JESD-609 code	e0
length	2.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	6
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output current	0.35 A
Nominal output voltage	1.2 V
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Encapsulate equivalent code	TSOP6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Maximum seat height	1.45 mm
surface mount	YES
Switch configuration	DOUBLER INVERTER
Maximum switching frequency	1800 kHz
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	1.625 mm

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 488

HIGH EFFICIENCY, LOW NOISE, INDUCTOR-LESS STEP DOWN DC/DC CONVERTER

LTC3250-1.5

DESCRIPTION

Demonstration circuit 488 is a high efficiency, inductor-

less step-down converter featuring the LTC3250-1.5.

The circuit produces a fixed 1.5V output from a 3.1V to

5.5V input.

Table 1. Performance Summary

PARAMETER

Minimum Input Voltage

Maximum Input Voltage

OUT

Burst Mode Operation Output Ripple

Continuous Mode Output Ripple

Nominal Switching Frequency

= 3.5V to 5.5V, I

OUT

= 0A to 250mA

(Not including ESR spike)

CONDITION

VALUE

3.1V

5.5V

1.5V ±4%

10mV

P–P

4mV

P–P

1.5MHz

Design files for this circuit board are available. Call

the LTC factory.

QUICK START PROCEDURE

Demonstration circuit 488 is set up to easily evaluate the

performance of the LTC3250-1.5 low noise charge

pump. Refer to Figure 1 for proper measurement

equipment setup, and follow the procedure outlined be-

low:

When measuring the input or output voltage ripple, care

must be taken to avoid a long ground lead on the oscil-

loscope probe. Measure the input or output voltage rip-

ple by touching the probe tip directly across the Vin or

Vout and GND terminals. See Figure 2 for proper scope

probe technique.

Connect jumper JP1 to the ON position.

With power off, connect a 3.6V, 200mA power supply

to the Vin and GND terminals.

Turn on the power at the input. Attach desired load

(up to 250mA) from Vout to GND

Check for the proper output voltage. Vout = 1.44V to

1.56V.

–

LOAD

–

VIN

GND

Figure 1. Proper Measurement Equipment Setup

Figure 2. Scope Probe Placement for

Measuring Input or Output Ripple

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Description	IC reg buck 1.2V 0.25a sot23-6	IC reg buck 1.2V 0.25a sot23-6	IC reg buck 1.2V 0.25a sot23-6	IC reg buck 1.5V 0.25a sot23-6	board eval for ltc3250es6	IC REG SWITCHD CAP 1.2V SOT23	IC REG SWITCHD CAP 1.5V SOT23	IC REG SWITCHD CAP 1.5V SOT23	IC REG SWITCHD CAP 1.5V SOT23
Brand Name	Linear Technology	Linear Technology	Linear Technology	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	incompatible	conform to	incompatible	incompatible	-	conform to	incompatible	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	SOT	SOT	SOT	SOT	-	SOT	SOT	SOT	SOT
package instruction	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37	-	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37	LSSOP, TSOP6,.11,37
Contacts	6	6	6	6	-	6	6	6	6
Manufacturer packaging code	S6	S6	S6	S6	-	S6	S6	S6	S6
Reach Compliance Code	_compli	compli	_compli	_compli	-	compliant	not_compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99	-	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR	-	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR	SWITCHED CAPACITOR REGULATOR
Maximum input voltage	5.5 V	5.5 V	5.5 V	5.5 V	-	5.5 V	5.5 V	5.5 V	5.5 V
Minimum input voltage	2.7 V	2.7 V	2.7 V	2.7 V	-	2.7 V	2.7 V	2.7 V	2.7 V
Nominal input voltage	3.6 V	3.6 V	3.6 V	3.6 V	-	3.6 V	3.6 V	3.6 V	3.6 V
JESD-30 code	R-PDSO-G6	R-PDSO-G6	R-PDSO-G6	R-PDSO-G6	-	R-PDSO-G6	R-PDSO-G6	R-PDSO-G6	R-PDSO-G6
JESD-609 code	e0	e3	e0	e0	-	e3	e0	e3	e3
length	2.9 mm	2.9 mm	2.9 mm	2.9 mm	-	2.9 mm	2.9 mm	2.9 mm	2.9 mm
Humidity sensitivity level	1	1	1	1	-	1	1	1	1
Number of functions	1	1	1	1	-	1	1	1	1
Number of terminals	6	6	6	6	-	6	6	6	6
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	-	70 °C	70 °C	70 °C	70 °C
Maximum output current	0.35 A	0.35 A	0.35 A	0.35 A	-	0.35 A	0.35 A	0.35 A	0.35 A
Nominal output voltage	1.2 V	1.2 V	1.2 V	1.5 V	-	1.2 V	1.5 V	1.5 V	1.5 V
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	LSSOP	LSSOP	LSSOP	LSSOP	-	LSSOP	LSSOP	LSSOP	LSSOP
Encapsulate equivalent code	TSOP6,.11,37	TSOP6,.11,37	TSOP6,.11,37	TSOP6,.11,37	-	TSOP6,.11,37	TSOP6,.11,37	TSOP6,.11,37	TSOP6,.11,37
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	-	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235	260	235	235	-	260	235	260	260
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.45 mm	1.45 mm	1.45 mm	1.45 mm	-	1.45 mm	1.45 mm	1.45 mm	1.45 mm
surface mount	YES	YES	YES	YES	-	YES	YES	YES	YES
Switch configuration	DOUBLER INVERTER	DOUBLER INVERTER	DOUBLER INVERTER	DOUBLER INVERTER	-	DOUBLER INVERTER	DOUBLER INVERTER	DOUBLER INVERTER	DOUBLER INVERTER
Maximum switching frequency	1800 kHz	1800 kHz	1800 kHz	1800 kHz	-	1800 kHz	1800 kHz	1800 kHz	1800 kHz
technology	CMOS	CMOS	CMOS	CMOS	-	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)	Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Tin (Sn)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)	Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	0.95 mm	0.95 mm	0.95 mm	0.95 mm	-	0.95 mm	0.95 mm	0.95 mm	0.95 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	20	30	20	20	-	30	20	30	30
width	1.625 mm	1.625 mm	1.625 mm	1.625 mm	-	1.625 mm	1.625 mm	1.625 mm	1.625 mm

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