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BOOST CONVERTER. IS31PW3500 Datasheet

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BOOST CONVERTER. IS31PW3500 Datasheet






IS31PW3500 CONVERTER. Datasheet pdf. Equivalent




IS31PW3500 CONVERTER. Datasheet pdf. Equivalent





Part

IS31PW3500

Description

1.1MHZ BOOST CONVERTER



Feature


IS31PW3500 1.1MHZ BOOST CONVERTER WITH 3 0V INTERNAL FET SWITCH February 2012 G ENERAL DESCRIPTION The IS31PW3500 is a constant current step-up converter. The step-up converter topology allows seri es connection of the white LEDs so the LED currents are identical for uniform brightness as well as constant output v oltage to drive other devices. The IS31 PW3500 switches at.
Manufacture

ISSI

Datasheet
Download IS31PW3500 Datasheet


ISSI IS31PW3500

IS31PW3500; 1.1MHz, allowing the use of tiny extern al components. The input and output cap acitor can be as small as 1μF, saving space and cost versus alternative solut ions. A low 0.25V feedback voltage mini mizes power loss in the current setting resistor for better efficiency. The IS 31PW3500 is available in small DFN-8, 2 mm × 2mm package. FEATURES 2 .4V to 5.5V input ra.


ISSI IS31PW3500

nge 26V output with over voltage protect ion High efficiency :85 % typical PWM d imming control Internal high power 30V MOSFET switch Fast 1.1MHz switching fre quency Small, low-profile inductors and capacitors DFN-8, 2mm × 2mm package R oHS compliant and 100% lead (Pb)-free APPLICATIONS Mobile phone Digital still camera PDAs, handheld computers M P3 players GPS rece.


ISSI IS31PW3500

ivers TYPICAL APPLICATION CIRCUIT http: //www.DataSheet4U.net/ Figure 1 Typic al Application Circiut Integrated Sili con Solution, Inc. – www.issi.com Rev .A, 12/30/2011 1 datasheet pdf - http ://www.DataSheet4U.net/ IS31PW3500 PIN CONFIGURATION Package Pin Configuratio n (Top View) DFN-8 PIN DESCRIPTION No . 1 2 3 4 5 Pin PGND VIN EN AIN AOUT De scription Signal gro.

Part

IS31PW3500

Description

1.1MHZ BOOST CONVERTER



Feature


IS31PW3500 1.1MHZ BOOST CONVERTER WITH 3 0V INTERNAL FET SWITCH February 2012 G ENERAL DESCRIPTION The IS31PW3500 is a constant current step-up converter. The step-up converter topology allows seri es connection of the white LEDs so the LED currents are identical for uniform brightness as well as constant output v oltage to drive other devices. The IS31 PW3500 switches at.
Manufacture

ISSI

Datasheet
Download IS31PW3500 Datasheet




 IS31PW3500
IS31PW3500
1.1MHZ BOOST CONVERTER WITH 30V INTERNAL FET SWITCH
February 2012
GENERAL DESCRIPTION
The IS31PW3500 is a constant current step-up
converter. The step-up converter topology allows
series connection of the white LEDs so the LED
currents are identical for uniform brightness as well as
constant output voltage to drive other devices. The
IS31PW3500 switches at 1.1MHz, allowing the use of
tiny external components. The input and output
capacitor can be as small as 1μF, saving space and
cost versus alternative solutions. A low 0.25V
feedback voltage minimizes power loss in the current
setting resistor for better efficiency. The IS31PW3500
is available in small DFN-8, 2mm × 2mm package.
FEATURES
2.4V to 5.5V input range
26V output with over voltage protection
High efficiency :85 % typical
PWM dimming control
Internal high power 30V MOSFET switch
Fast 1.1MHz switching frequency
Small, low-profile inductors and capacitors
DFN-8, 2mm × 2mm package
RoHS compliant and 100% lead (Pb)-free
APPLICATIONS
Mobile phone
Digital still camera
PDAs, handheld computers
MP3 players
GPS receivers
TYPICAL APPLICATION CIRCUIT
http://www.DataSheet4U.net/
Figure 1 Typical Application Circiut
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/30/2011
1
datasheet pdf - http://www.DataSheet4U.net/




 IS31PW3500
IS31PW3500
PIN CONFIGURATION
Package
Pin Configuration (Top View)
DFN-8
PIN DESCRIPTION
No. Pin
Description
1 PGND Signal ground, connect to ground.
2 VIN Input supply voltage.
3
EN
Chip enable pin. Connect to 1.4V or higher to enable device,
0.4V or less to disable device.
4 AIN Audio input.(note1)
5 AOUT Audio output.(note1)
Feedback pin. Reference voltage is 0.25V. Connect cathode of
6
FB
lowest LED and resistor here. Calculate resistor value according
to the formula: RFB = 0.25/ILED, calculate output voltage according
to the formula: VOUT = (R2+R1)×0.25V/R2.
7
GND
Common ground
http://www.DataSheet4U.net/
8
LX
Switch pin. Connect inductor/diode here. Minimize trace area at
this pin to reduce EMI.
Thermal Pad Connect to GND.
Note 1: See section constant output voltage for Class-G audio amplifier in application information.
Copyright © 2011 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any 
time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are 
advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. 
Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the 
product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not 
authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: 
a.) the risk of injury or damage has been minimized; 
b.) the user assume all such risks; and 
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/30/2011
2
datasheet pdf - http://www.DataSheet4U.net/




 IS31PW3500
IS31PW3500
ORDERING INFORMATION
Industrial Range: -40°C to +85°C
Order Part No.
Package
IS31PW3500-DLS2-TR
DFN-8, Lead-free
QTY/Reel
3000
http://www.DataSheet4U.net/
Integrated Silicon Solution, Inc. – www.issi.com
Rev.A, 12/30/2011
3
datasheet pdf - http://www.DataSheet4U.net/



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