DC488A datasheet, PDF - EEWORLD Datasheet

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DC488A: Descriptionboard eval for ltc3250es6; CategoryDevelopment board/suite/development tools; File Size430KB，2 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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board eval for ltc3250es6

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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

DC488A Related Products

	DC488A	LTC3250ES6-1.2#TRPBF	LTC3250ES6-1.2#TRM	LTC3250ES6-1.5#TR	LTC3250ES6-1.2#TR	LTC3250ES6-1.2#TRMPBF	LTC3250ES6-1.5#TRM	LTC3250ES6-1.5#TRMPBF	LTC3250ES6-1.5#TRPBF
Description	board eval for ltc3250es6	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	IC reg buck 1.2V 0.25a sot23-6	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?	-	conform to	incompatible	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	-	e3	e0	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	1.5 V	1.2 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)	-	260	235	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 (Sn)	Tin/Lead (Sn/Pb)	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	-	30	20	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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