LTC3737EUF#PBF datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Power/power management> The power supply circuit> LTC3737EUF#PBF

LTC3737EUF#PBF: DescriptionIC REG CTRLR BUCK 24QFN; CategoryPower/power management The power supply circuit; File Size184KB，5 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

Download Datasheet Parametric Compare View All

LTC3737EUF#PBF Overview

IC REG CTRLR BUCK 24QFN

LTC3737EUF#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
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	SINGLE
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

Preview

Download Datasheet

View All

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 664

2-PHASE DUAL STEP-DOWN CONVERTER WITH OUTPUT TRACKING

LTC3737EUF

DESCRIPTION

Demonstration circuit 664 is a high efficiency 2-phase

dual step-down DC/DC converter with 2.75V to 9.8V

input range. It has two outputs: 2.5V/2.5A and

1.8V/3A. The demo board features the constant fre-

quency current mode LTC®3737EUF controller. The

MOSFET V

sensing eliminates the need for sense

resistors and improves efficiency. Out of phase op-

eration significantly reduces input ripple current and

noise as well as the input capacitor size.

Switching frequency is internally set at 550KHz. For

noise sensitive applications, the converter can be ex-

Table 1. Performance Summary (T

= 25°C)

PARAMETER

Input Voltage Range

OUT1

= 2.75V to 9.8V, I

OUT1

= 0A to 2.5A,

OUT2

= 0A to 3A

OUT2

= 2.75V to 9.8V, I

OUT1

= 0A to 2.5A,

OUT2

= 0A to 3A

Typical Output Ripple V

OUT1

Typical Output Ripple V

OUT2

Typical Switching Frequency

= 3.3V, I

OUT1

= 2.5A (20MHz BW)

= 3.3V, I

OUT2

= 3A (20MHz BW)

PLLLPF Pin Floating

14mV

P–P

19mV

P–P

550kHz

1.8V ±3%

CONDITION

VALUE

2.75V to 9.8V

2.5V ±3%

ternally synchronized from 250KHz to 850KHz. The

frequency can also be selected with PLLLPF pin. Ty-

ing PLLLPF pin to GND selects 300KHz operation;

tying PLLLPF pin to VIN selects 750KHz operation.

The demo board has tracking function, allowing V

OUT2

to 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

QUICK START PROCEDURE

Demonstration circuit 664 is easy to set up to evalu-

ate the performance of LTC3737. Refer to Figure 1 for

proper measurement equipment setup and follow the

procedure below:

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 Figure

2 for proper scope probe technique.

NOTE:

When

With power off, connect the input power supply to

+Vin (2.75V-9.8V) and GND (input return).

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

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

Figure 1) between Vout2 and GND. (Initial loads:

0A.)

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%.

LTC3737EUF#PBF Related Products

	LTC3737EUF#PBF	LTC3737EGN#TR	LTC3737EUF#TR	DC664A	LTC3737EGN#PBF	LTC3737EGN#TRPBF	LTC3737EUF#TRPBF
Description	IC REG CTRLR BUCK 24QFN	IC reg ctrlr buck pwm CM 24-ssop	IC reg ctrlr buck pwm CM 24-qfn	board eval for ltc3737euf	IC REG CTRLR BUCK 24SSOP	IC REG CTRLR BUCK 24SSOP	IC REG CTRLR BUCK 24QFN
Brand Name	Linear Technology	Linear Technology	Linear Technology	-	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	incompatible	incompatible	-	conform to	conform to	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )	-	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	QFN	SSOP	QFN	-	SSOP	SSOP	QFN
package instruction	HVQCCN, LCC24,.16SQ,20	SSOP,	HVQCCN,	-	SSOP, SSOP24,.24	SSOP,	HVQCCN,
Contacts	24	24	24	-	24	24	24
Manufacturer packaging code	UF	GN	UF	-	GN	GN	UF
Reach Compliance Code	compliant	_compli	compli	-	compliant	compliant	compliant
ECCN code	EAR99	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	DUAL SWITCHING CONTROLLER
control mode	CURRENT-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	PULSE WIDTH MODULATION
Maximum input voltage	9.8 V	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	2.75 V
Nominal input voltage	4.2 V	4.2 V	4.2 V	-	4.2 V	4.2 V	4.2 V
JESD-30 code	S-PQCC-N24	R-PDSO-G24	S-PQCC-N24	-	R-PDSO-G24	R-PDSO-G24	S-PQCC-N24
JESD-609 code	e3	e0	e0	-	e3	e3	e3
length	4 mm	8.649 mm	4 mm	-	8.649 mm	8.649 mm	4 mm
Humidity sensitivity level	1	1	1	-	1	1	1
Number of functions	1	1	1	-	1	1	1
Number of terminals	24	24	24	-	24	24	24
Maximum operating temperature	70 °C	70 °C	70 °C	-	70 °C	70 °C	70 °C
Maximum output current	1 A	1 A	1 A	-	1 A	1 A	1 A
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	-	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	HVQCCN	SSOP	HVQCCN	-	SSOP	SSOP	HVQCCN
Package shape	SQUARE	RECTANGULAR	SQUARE	-	RECTANGULAR	RECTANGULAR	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE	-	SMALL OUTLINE, SHRINK PITCH	SMALL OUTLINE, SHRINK PITCH	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260	235	235	-	260	260	250
Certification status	Not Qualified	Not Qualified	Not Qualified	-	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	0.8 mm	1.75 mm	0.8 mm	-	1.75 mm	1.75 mm	0.8 mm
surface mount	YES	YES	YES	-	YES	YES	YES
Switch configuration	SINGLE	SINGLE	SINGLE	-	SINGLE	SINGLE	SINGLE
Maximum switching frequency	825 kHz	825 kHz	825 kHz	-	825 kHz	825 kHz	825 kHz
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	-	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-	Matte Tin (Sn)	Matte Tin (Sn)	Matte Tin (Sn)
Terminal form	NO LEAD	GULL WING	NO LEAD	-	GULL WING	GULL WING	NO LEAD
Terminal pitch	0.5 mm	0.635 mm	0.5 mm	-	0.635 mm	0.635 mm	0.5 mm
Terminal location	QUAD	DUAL	QUAD	-	DUAL	DUAL	QUAD
Maximum time at peak reflow temperature	30	20	20	-	30	30	NOT SPECIFIED
width	4 mm	3.899 mm	4 mm	-	3.899 mm	3.899 mm	4 mm

Recommended Resources

Electric contact mercury thermometer constant temperature control circuit 3a

MOS inverter circuit

Three-wire connection for remote control of RTD

STK4128 power amplifier circuit

Differential amplifier circuit with low pass filter

Computer motherboard circuit diagram 815 4_43

Shortcut: E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF EG EH EI EJ EK EL EM EN EO EP EQ ER ES ET EU EV EW EX EY EZ F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF FG FH FI FJ FK FL FM FN FO FP FQ FR FS FT FU FV FW FX FY FZ G0 G1 G2 G3 G4 G5 G6 G7 G8 G9 GA GB GC GD GE GF GG GH GI GJ GK GL GM GN GO GP GQ GR GS GT GU GV GW GX GZ H0 H1 H2 H3 H4 H5 H6 H7 H8 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ I1 I2 I3 I4 I5 I6 I7 IA IB IC ID IE IF IG IH II IK IL IM IN IO IP IQ IR IS IT IU IV IW IX J0 J1 J2 J6 J7 JA JB JC JD JE JF JG JH JJ JK JL JM JN JP JQ JR JS JT JV JW JX JZ K0 K1 K2 K3 K4 K5 K6 K7 K8 K9 KA KB KC KD KE KF KG KH KI KJ KK KL KM KN KO KP KQ KR KS KT KU KV KW KX KY KZ

Popular Components