DC702A datasheet, PDF - EEWORLD Datasheet

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DC702A: Descriptionboard eval for ltc3406b-2es5; CategoryDevelopment board/suite/development tools; File Size242KB，4 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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board eval for ltc3406b-2es5

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QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 702

HIGH EFFICIENCY, THINSOT™ SYNCHRONOUS BUCK REGULATOR

LTC3406B-2ES5

DESCRIPTION

Demonstration circuit DC702 is a 2.25 MHz step-

down converter, using the LTC3406B monolithic syn-

chronous buck regulator. The DC702 has an input

voltage range of 2.5V to 5.5V, and is capable of deliv-

ering up to 600 mA of output current at a minimum

input voltage of 3V. The DC702 is made for noise

sensitive applications, due to the LTC3406B-2 oper-

ating in pulse-skipping mode at low load currents.

The DC702 is a high efficiency circuit - up to 90%,

and during shutdown, the DC702 consumes less than

1 uA. These features, plus the LTC3406B coming in a

tiny 5-Pin ThinSOT package and having an operating

frequency of 2.25 MHz (allowing the exclusive use of

low profile surface mount components), make the

DC702 an ideal circuit for use in battery-powered,

hand-held applications.

Design files for this circuit board are available. Call

the LTC factory.

Burst Mode and ThinSOT are trademarks of Linear Technology Corporation

Table 1.

Performance Summary (TA = 25°C)

PARAMETER

Minimum Input Voltage

Maximum Input Voltage

Output Voltage VOUT

Typical Output Ripple VOUT

Output Regulation

Nominal Switching Frequency

VIN = 2.5V to 5.5V, IOUT = 0A to 600 mA

VIN = 5V, IOUT = 600 mA (20 MHz BW)

Line

Load

CONDITION

VALUE

2.5V

5.5V

1.8V ±2%

20mVP–P

±1%

2.25 MHz

QUICK START PROCEDURE

The DC702 demonstration circuit is easy to set up to

evaluate the performance of the LTC3406B-2. One

word of caution: when the board is right-side up (the

title is legible at the top of the board), the output volt-

age turret is on the left side of the board, and the in-

put voltage turret is on the right side of the board.

Set up the circuit appropriately. Before proceeding to

test, insert jumper JP1 into the upper position, con-

necting the RUN pin to ground (GND), which shuts

down the circuit. Refer to Figure 1 for proper meas-

urement equipment setup and follow the procedure

below:

NOTE:

When measuring the input or output voltage

ripple, care must be taken to avoid a long ground lead

on the oscilloscope probe. Measure the input or out-

put voltage ripple by touching the probe tip directly

across the Vin or Vout and GND terminals. See Fig-

ure 2 for proper scope probe technique.

DC702A Related Products

	DC702A	LTC3406B-2ES5#TRPBF	LTC3406B-2ES5#TR	LTC3406B-2ES5#TRM	LTC3406B-2ES5#TRMPBF
Description	board eval for ltc3406b-2es5	IC reg buck sync adj tsot23-5	IC reg buck sync adj tsot23-5	IC reg buck sync adj tsot23-5	IC REG BUCK ADJ 0.6A SYNC TSOT23
Brand Name	-	Linear Technology	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	-	conform to	incompatible	incompatible	conform to
Maker	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	-
Parts packaging code	-	SOT	SOT	SOT	SOT
package instruction	-	VSSOP, TSOP5/6,.11,37	VSSOP, TSOP5/6,.11,37	VSSOP,	VSSOP,
Contacts	-	5	5	5	5
Manufacturer packaging code	-	S5	S5	S5	S5
Reach Compliance Code	-	compli	_compli	not_compliant	compliant
ECCN code	-	EAR99	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	-	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	-	5.5 V	5.5 V	5.5 V	5.5 V
Minimum input voltage	-	2.5 V	2.5 V	2.5 V	2.5 V
Nominal input voltage	-	3.6 V	3.6 V	3.6 V	3.6 V
JESD-30 code	-	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5	R-PDSO-G5
JESD-609 code	-	e3	e0	e0	e3
length	-	2.9 mm	2.9 mm	2.9 mm	2.9 mm
Humidity sensitivity level	-	1	1	1	1
Number of functions	-	1	1	1	1
Number of terminals	-	5	5	5	5
Maximum operating temperature	-	85 °C	70 °C	70 °C	70 °C
Maximum output current	-	1.3 A	1.3 A	1.3 A	1.3 A
Package body material	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	-	VSSOP	VSSOP	VSSOP	VSSOP
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	-	260	235	235	260
Certification status	-	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	-	1 mm	1 mm	1 mm	1 mm
surface mount	-	YES	YES	YES	YES
Switch configuration	-	BUCK	BUCK	BUCK	BUCK
Maximum switching frequency	-	2700 kHz	2700 kHz	2700 kHz	2700 kHz
Temperature level	-	INDUSTRIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	-	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)
Terminal form	-	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	-	0.95 mm	0.95 mm	0.95 mm	0.95 mm
Terminal location	-	DUAL	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	-	30	20	20	30
width	-	1.625 mm	1.625 mm	1.625 mm	1.625 mm

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