LTC3736EUF#PBF datasheet, PDF - EEWORLD Datasheet

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LTC3736EUF#PBF: DescriptionIC REG CTRLR BUCK 24QFN; CategoryPower/power management The power supply circuit; File Size187KB，5 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC3736EUF#PBF Overview

IC REG CTRLR BUCK 24QFN

LTC3736EUF#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	QFN
package instruction	HVQCCN, LCC24,.16SQ,20
Contacts	24
Manufacturer packaging code	UF
Reach Compliance Code	compliant
ECCN code	EAR99
Samacsys Description	Linear Technology LTC3736EUF#PBF, DC-DC Converter Dual, 9.8 V Step-Up, Synchronous, 850 kHz, 24-Pin, QFN
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	9.8 V
Minimum input voltage	2.75 V
Nominal input voltage	4.2 V
JESD-30 code	S-PQCC-N24
JESD-609 code	e3
length	4 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	24
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output current	1 A
Package body material	PLASTIC/EPOXY
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC24,.16SQ,20
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	0.8 mm
surface mount	YES
Switch configuration	PUSH-PULL
Maximum switching frequency	825 kHz
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	NO LEAD
Terminal pitch	0.5 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	4 mm

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2-PHASE DUAL SYNCHRONOUS STEP-DOWN CONVERTER WITH OUTPUT TRACKING

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 663

LTC3736EUF

DESCRIPTION

Demonstration circuit 663 is a 2-phase dual synchro-

nous high efficiency step-down DC/DC converter with

2.7V to 8V input range. It has two outputs: 2.5V (5A

MAX at 5V input) and 1.8V (5A MAX at 5V input). The

demo board features the LTC®3736EUF controller. The

constant frequency current mode architecture with

MOSFET V

sensing eliminates the need for sense re-

sistors and improves efficiency. Out of phase operation

significantly reduces peak input ripple current; thereby

reducing the noise and input capacitor size.

Switching frequency is internally set at 550kHz. For

noise sensitive applications, the converter can be exter-

nally synchronized from 250kHz to 850kHz. The fre-

quency can also be selected with PLLLPF pin. Tying

PLLLPF pin to GND selects 300kHz operation; tying

PLLLPF pin to VIN selects 750kHz operation.

The demo circuit has output tracking, allowing V

OUT2

track V

OUT1

during start-up.

Design files for this circuit board are available. Call

the LTC factory.

LTC is a trademark of Linear Technology Corporation

Table 1. Performance Summary (T

= 25°C)

PARAMETER

Input Voltage Range

OUT1

= 5V, I

OUT1

= 0A to 5A,

OUT2

= 0A to 5A

OUT2

= 5V, I

OUT1

= 0A to 5A,

OUT2

= 0A to 5A

Typical Output Ripple V

OUT1

Typical Output Ripple V

OUT2

Typical Switching Frequency

= 3.3V, I

OUT1

= 3A (20MHz BW)

= 3.3V, I

OUT2

= 3A (20MHz BW)

PLLLPF Pin Floating

18mV

P–P

26mV

P–P

550kHz

1.8V ±3%

CONDITION

VALUE

2.7V to 8V

2.5V ±3%

QUICK START PROCEDURE

Demonstration circuit 663 is easy to set up to evaluate

the performance of the LTC3736. Refer to Figure 1. for

proper measurement equipment setup and follow the

procedure below:

measuring the input or output voltage rip-

ple, care must be taken to avoid a long ground lead on

the oscilloscope probe. Measure the input or output

voltage ripple by touching the probe tip directly across

the Vin or Vout and GND terminals. See Figure 2. for

proper scope probe technique.

NOTE:

When

Connect the 2.5V load (Load 1 in Figure 1.) between

Vout1 and GND; connect the 1.8V load (Load 2 in Fig-

ure 1.) between Vout2 and GND. (Initial loads: no

load.)

Connect the DVMs to the input and outputs.

Turn on the input power supply and check for the

proper output voltages. Vout1 should be 2.5V+/-3%.

Vout2 should be 1.8V+/-3%.

With power off, connect the input power supply to Vin

(2.7V-8V) and GND (input return).

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Description	IC REG CTRLR BUCK 24QFN	IC reg ctrlr buck pwm CM 24-qfn	board eval for ltc3736euf	IC REG CTRLR BUCK 24SSOP	IC REG CTRLR BUCK 24QFN	IC REG CTRLR BUCK 24SSOP
Brand Name	Linear Technology	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	incompatible	-	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	QFN	QFN	-	SSOP	QFN	SSOP
package instruction	HVQCCN, LCC24,.16SQ,20	HVQCCN, LCC24,.16SQ,20	-	SSOP, SSOP24,.24	HVQCCN, LCC24,.16SQ,20	SSOP, SSOP24,.24
Contacts	24	24	-	24	24	24
Manufacturer packaging code	UF	UF	-	GN	UF	GN
Reach Compliance Code	compliant	not_compliant	-	compliant	compliant	compliant
ECCN code	EAR99	EAR99	-	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	-	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER	DUAL SWITCHING CONTROLLER
control mode	CURRENT-MODE	CURRENT-MODE	-	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	-	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	9.8 V	9.8 V	-	9.8 V	9.8 V	9.8 V
Minimum input voltage	2.75 V	2.75 V	-	2.75 V	2.75 V	2.75 V
Nominal input voltage	4.2 V	4.2 V	-	4.2 V	4.2 V	4.2 V
JESD-30 code	S-PQCC-N24	S-PQCC-N24	-	R-PDSO-G24	S-PQCC-N24	R-PDSO-G24
JESD-609 code	e3	e0	-	e3	e3	e3
length	4 mm	4 mm	-	8.649 mm	4 mm	8.649 mm
Humidity sensitivity level	1	1	-	1	1	1
Number of functions	1	1	-	1	1	1
Number of terminals	24	24	-	24	24	24
Maximum operating temperature	70 °C	70 °C	-	70 °C	70 °C	70 °C
Maximum output current	1 A	1 A	-	1 A	1 A	1 A
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVQCCN	HVQCCN	-	SSOP	HVQCCN	SSOP
Encapsulate equivalent code	LCC24,.16SQ,20	LCC24,.16SQ,20	-	SSOP24,.24	LCC24,.16SQ,20	SSOP24,.24
Package shape	SQUARE	SQUARE	-	RECTANGULAR	SQUARE	RECTANGULAR
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	-	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	255	-	250	250	260
Certification status	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	0.8 mm	-	1.727 mm	0.8 mm	1.727 mm
surface mount	YES	YES	-	YES	YES	YES
Switch configuration	PUSH-PULL	PUSH-PULL	-	PUSH-PULL	PUSH-PULL	PUSH-PULL
Maximum switching frequency	825 kHz	825 kHz	-	825 kHz	825 kHz	825 kHz
technology	CMOS	CMOS	-	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	NO LEAD	NO LEAD	-	GULL WING	NO LEAD	GULL WING
Terminal pitch	0.5 mm	0.5 mm	-	0.635 mm	0.5 mm	0.635 mm
Terminal location	QUAD	QUAD	-	DUAL	QUAD	DUAL
Maximum time at peak reflow temperature	30	40	-	NOT SPECIFIED	NOT SPECIFIED	30
width	4 mm	4 mm	-	3.899 mm	4 mm	3.899 mm

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