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SP7686EB

Description
EVAL BOARD FOR SP7666
CategoryDevelopment board/suite/development tools   
File Size726KB,16 Pages
ManufacturerMaxLinear Inc.
Environmental Compliance
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SP7686EB Overview

EVAL BOARD FOR SP7666

SP7686EB Parametric

Parameter NameAttribute value
Current - Output/Channel500mA
Output and type1. Non-isolation
Voltage - Output-
characteristicdimmable
Voltage - input2.7 V ~ 5.5 V
What's includedplate
IC/parts usedSP7686
SP7686/SP7686A
Constant Current Flash Driver in DFN 2mm x 3mm
January 2010
Rev. 2.1.0
GENERAL DESCRIPTION
The SP7686/SP7686A are current regulated
charge pumps ideal for powering high power,
high brightness LEDs for camera FLASH
applications of up to 500mA.
The charge pump automatically switches
between step-up and step-down modes
ensuring that the LED current does not depend
on the forward voltage. A low current sense
reference voltage (60mV to 360mV) allows the
use of small 0603 current sensing resistors.
The SP7686 has a DAC programmable
feedback reference voltage allowing the user
to precisely set FLASH and TORCH output
current levels, while the fixed version
SP7686A has set levels of FLASH and TORCH
reference voltage.
Both parts have over-
voltage, over-current, over-temperature and
FLASH time-out protection features.
The SP7686 and SP7686A are offered in a
RoHS compliant “green”/halogen free space
saving 8-pin 2x3mm DFN package.
APPLICATIONS
Cell Phone Flash
Cell Phone Torch
General LED applications
FEATURES
Output current up to 500mA
Up to 94% efficiency
Single Wire serial interface
2.4MHz switching frequency
FB Reference voltage adjusts in 10mV
steps from 60mV to 360mV
10nA Shutdown
PWM brightness control for DAC
Fast turn-on (<150μs)
3.5s Timeout function
Thermal shutdown protection
Built-in over-voltage and over-current
protection
Fixed output SP7686A
Automatic soft start limits in-rush
current
RoHS Compliant, “Green”/Halogen
Free 8-pin 2x3mm DFN
TYPICAL APPLICATION DIAGRAM
Fig. 1: SP7686 and SP7686A Application Diagrams
Exar Corporation
48720 Kato Road, Fremont CA 94538, USA
www.exar.com
Tel. +1 510 668-7000 – Fax. +1 510 668-7001

SP7686EB Related Products

SP7686EB SP7686AER-L SP7686AER-L/TR SP7686ER-L/TR SP7686AEB
Description EVAL BOARD FOR SP7666 IC LED DRIVER RGLTR 500MA 8DFN IC LED DRIVER RGLTR 500MA 8DFN IC LED DRIVER REGULATOR DIM 8DFN EVAL BOARD FOR SP7686A
Current - Output/Channel 500mA 500mA 500mA 500mA 500mA
type - DC DC voltage regulator DC DC voltage regulator DC DC voltage regulator -
Topology - Switched Capacitor (Charge Pump) Switched Capacitor (Charge Pump) Switched Capacitor (Charge Pump) -
Number of outputs - 1 1 1 -
Voltage - Power supply (minimum) - 2.7V 2.7V 2.7V -
Voltage - Power Supply (Highest) - 5.5V 5.5V 5.5V -
frequency - 2.4MHz 2.4MHz 2.4MHz -
application - camera flash camera flash camera flash -
Operating temperature - -40°C ~ 85°C(TA) -40°C ~ 85°C(TA) -40°C ~ 85°C(TA) -
Installation type - surface mount surface mount surface mount -
Package/casing - 8-VFDFN Exposed Pad 8-VFDFN Exposed Pad 8-VFDFN Exposed Pad -
Supplier device packaging - 8-DFN(2x3) 8-DFN(2x3) 8-DFN(2x3) -
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