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LTC3721EUF-1

Description
Push-Pull PWM Controller
CategoryPower/power management    The power supply circuit   
File Size181KB,16 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LTC3721EUF-1 Overview

Push-Pull PWM Controller

LTC3721EUF-1 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
MakerLinear ( ADI )
Parts packaging codeQFN
package instructionHVSON, LCC16,.16SQ,25
Contacts16
Manufacturer packaging codeUF
Reach Compliance Code_compli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage9.5 V
Minimum input voltage6.5 V
Nominal input voltage9.5 V
JESD-30 codeS-PDSO-N16
JESD-609 codee0
length4 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature
Maximum output current0.1 A
Package body materialPLASTIC/EPOXY
encapsulated codeHVSON
Encapsulate equivalent codeLCC16,.16SQ,25
Package shapeSQUARE
Package formSMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)235
Certification statusNot Qualified
Maximum seat height0.8 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency1000 kHz
technologyCMOS
Temperature levelOTHER
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formNO LEAD
Terminal pitch0.65 mm
Terminal locationDUAL
Maximum time at peak reflow temperature20
width4 mm
LTC3721-1
Push-Pull PWM Controller
FEATURES
DESCRIPTIO
High Efficiency Push-Pull PWM
1.5A Sink, 1A Source Output Drivers
Adjustable Push-Pull Dead-Time
Adjustable System Undervoltage Lockout and
Hysteresis
Adjustable Leading Edge Blanking
Low Start-Up and Quiescent Currents
Current Mode Operation
Single Resistor Slope Compensation
V
CC
UVLO and 25mA Shunt Regulator
Programmable Fixed Frequency Operation to 1MHz
Soft-Start, Cycle-by-Cycle Current Limiting and
Hiccup Mode Short-Circuit Protection
5V, 15mA Low Dropout Regulator
16-Pin SSOP and (4mm
×
4mm) QFN Packages
The LTC
®
3721-1 push-pull PWM controller provides all of
the control and protection functions necessary for com-
pact and highly efficient, isolated power converters. High
integration minimizes external component count, while
preserving design flexibility.
The robust push-pull output stages switch at half the
oscillator frequency. Dead-time is independently pro-
grammed with an external resistor. A UVLO program input
provides precise system turn-on and turn off voltages. The
LTC3721-1 features peak current mode control with pro-
grammable slope compensation and leading edge
blanking.
The LTC3721-1 features extremely low operating and
start-up currents and reliable short-circuit and
overtemperature protection. The LTC3721-1 is offered in
16-pin SSOP and (4mm
×
4mm) QFN packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
Telecommunications, Infrastructure Power Systems
Distributed Power Architectures
Server Power Supplies
High Density Power Modules
TYPICAL APPLICATIO
V
IN
Isolated Push-Pull Converter
V
OUT
UVLO
FROM
AUXILIARY
WINDING
V
CC
DPRG
V
REF
C
T
R
LEB
DRVA
DRVB
CS
R
CS
LTC3721-1
V
REF
V
OUT
SS
COMP
V
OUT
V
+
COLL
COMP
LT1431
R
TOP
R
REF
R
MID
FB GND
GND-F GND-S
U
+
37211 TA01
U
U
sn37211 37211fs
1

LTC3721EUF-1 Related Products

LTC3721EUF-1 LTC3721-1 LTC3721EGN-1
Description Push-Pull PWM Controller Push-Pull PWM Controller Push-Pull PWM Controller
Brand Name Linear Technology - Linear Technology
Is it Rohs certified? incompatible - incompatible
Maker Linear ( ADI ) - Linear ( ADI )
Parts packaging code QFN - SSOP
package instruction HVSON, LCC16,.16SQ,25 - SSOP, SSOP16,.25
Contacts 16 - 16
Manufacturer packaging code UF - GN
Reach Compliance Code _compli - _compli
ECCN code EAR99 - EAR99
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER - SWITCHING CONTROLLER
control mode CURRENT-MODE - CURRENT-MODE
Control Technology PULSE WIDTH MODULATION - PULSE WIDTH MODULATION
Maximum input voltage 9.5 V - 9.5 V
Minimum input voltage 6.5 V - 6.5 V
Nominal input voltage 9.5 V - 9.5 V
JESD-30 code S-PDSO-N16 - R-PDSO-G16
JESD-609 code e0 - e0
length 4 mm - 4.89 mm
Humidity sensitivity level 1 - 1
Number of functions 1 - 1
Number of terminals 16 - 16
Maximum operating temperature 85 °C - 85 °C
Maximum output current 0.1 A - 0.1 A
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY
encapsulated code HVSON - SSOP
Encapsulate equivalent code LCC16,.16SQ,25 - SSOP16,.25
Package shape SQUARE - RECTANGULAR
Package form SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE - SMALL OUTLINE, SHRINK PITCH
Peak Reflow Temperature (Celsius) 235 - 235
Certification status Not Qualified - Not Qualified
Maximum seat height 0.8 mm - 1.75 mm
surface mount YES - YES
Switch configuration PUSH-PULL - PUSH-PULL
Maximum switching frequency 1000 kHz - 1000 kHz
technology CMOS - CMOS
Temperature level OTHER - OTHER
Terminal surface Tin/Lead (Sn/Pb) - Tin/Lead (Sn/Pb)
Terminal form NO LEAD - GULL WING
Terminal pitch 0.65 mm - 0.635 mm
Terminal location DUAL - DUAL
Maximum time at peak reflow temperature 20 - 20
width 4 mm - 3.899 mm
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