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| LM3310_15 Datasheet, PDF (1/33 Pages) Texas Instruments – Step-Up PWM DC/DC Converter with Integrated Op-Amp and Gate Pulse Modulation Switch | |||
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LM3310
www.ti.com
SNVS341E â AUGUST 2005 â REVISED MAY 2013
LM3310 Step-Up PWM DC/DC Converter with Integrated Op-Amp and Gate Pulse
Modulation Switch
Check for Samples: LM3310
FEATURES
1
â¢2 Boost Converter with a 2A, 0.18⦠Switch
⢠Boost Output Voltage Adjustable up to 20V
⢠Operating Voltage Range of 2.5V to 7V
⢠660kHz/1.28MHz Pin Selectable Switching
Frequency
⢠Adjustable Soft-Start Function
⢠Input Undervoltage Protection
⢠Over Temperature Protection
⢠Integrated Op-Amp
⢠Integrated Gate Pulse Modulation (GPM)
Switch
⢠24-Lead WQFN Package
DESCRIPTION
The LM3310 is a step-up DC/DC converter integrated
with an Operational Amplifier and a gate pulse
modulation switch. The boost (step-up) converter is
used to generate an adjustable output voltage and
features a low RDSON internal switch for maximum
efficiency. The operating frequency is selectable
between 660kHz and 1.28MHz allowing for the use of
small external components. An external soft-start pin
enables the user to tailor the soft-start time to a
specific application and limit the inrush current. The
Op-Amp is capable of sourcing/sinking 135mA of
current (typical). The gate pulse modulation switch
can operate with a VGH voltage of 5V to 30V. The
LM3310 is available in a low profile 24-lead WQFN
package.
APPLICATIONS
⢠TFT Bias Supplies
⢠Portable Applications
Typical Application Circuit
D2
D3
VOH = 2 X VOUT
C1
C2
VIN
CIN
L
D1
R1
SHDN
POS
NEG
OUT
VFLK
VDPM
VGHM
VGH
RE
FREQ
VIN
LM3310
CE
SW
VDD
AVIN
FB
SS
VC
AGND
PGND
RE
CE
R2
RC
CSS
CC
V OUT
RFB1
C OUT
RFB2
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005â2013, Texas Instruments Incorporated
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