Ordering number : EN7895B LB8650T
Monolithic Digital IC
Driver for Digital Still Cameras
Overview
LB8650T is a driver for digital still cameras.
Features
• Two direct nickel hydride batteries for digital cameras embedded in one chip.
(1) Constant voltage control for AF - Stepping motor driver. 1-2 phase excitation, 2 phase excitation possible.
(2) Constant current control for SH - Solenoid coil driver → Built-in start-up correction circuit. • No standby current consumption (or zero). • Low voltage driving possible (1.9V to). • Low saturation output.
• Built-in thermal protection circuitry.
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Maximum power source voltage Maximum input applied voltage Maximum output applied voltage Maximum output current Allowable power dissipation Operating temperature Storage temperature
VB max VIN max VOUT max IO max Pd max Topr Tstg
VB power source per CH
Mounted on a specified board (*1)
10.5 V 10.5 V 10.5 V 600 mA 800 mW -10 to +80 -55 to +150
°C °C
Ratings Unit (*1) Mounted on a specified board: 114.3mm×76.1mm×1.6mm, glass epoxy resin.
Allowable Operating Range at Ta = 25°C
Parameter Symbol Conditions Power source voltage range Input pin high level voltage Input pin low level voltage
Constant voltage setting input range
VB
1.9 to 10 1.8 to 10 -0.3 to 0.4 0.1 to VB
V V V V
Ratings Unit VINH (*2) VINL VOC
VOC
(*2) No hierarchical relationship between VB and VIN.
AnyandallSANYOSemiconductorproductsdescribedorcontainedhereindonothavespecificationsthatcanhandleapplicationsthatrequireextremelyhighlevelsofreliability,suchaslife-supportsystems,aircraft'scontrolsystems,orotherapplicationswhosefailurecanbereasonablyexpectedtoresultinseriousphysicaland/ormaterialdamage.ConsultwithyourSANYOSemiconductorrepresentativenearestyoubeforeusinganySANYOSemiconductorproductsdescribedorcontainedhereininsuchapplications.SANYOSemiconductorassumesnoresponsibilityforequipmentfailuresthatresultfromusingproductsatvaluesthatexceed,evenmomentarily,ratedvalues(suchasmaximumratings,operatingconditionranges,orotherparameters)listedinproductsspecificationsofanyandallSANYOSemiconductorproductsdescribedorcontainedherein. D2706 TI IM B8-6047 No.7895-1/6
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LB8650T
Electrical Characteristics at Ta = 25°C, VB = VCC = 2.4V, Rf = 0.5Ω
Parameter Symbol Standby current consumption Operating current consumption
ICC1 ICC2 IB1
Reference voltage Control pin iInput current Overheat protection operation temperature
Constant current stepping motor driver for AF/STP (OUT1, 2, 3, 4, 5P) Output constant voltage Output saturation voltage
VO1
VC1 = 0.4V
1.57 1.66 1.74 V 0.2 0.3 V
0.15 0.22 Vref IIN THD
IN1 = IN3 = 2V, VC1 = 0.4V IN4 = IN5 = 2V, ICI = 0.2V IN1 = IN3 = 2V, VC1 = 0.4V Iref = -1mA VIN = 5.0V
Design guaranteed (*3)
ICC0 VB = VCC = 4.0V
Conditions
Unit
min typ max 0.1 5.0 µA 3.5 6.0 mA 3.5 6.0 5.5 9.0 875 905 935 mV 60 90 µA 150 180 210 °C
Ratings
VSAT1 IO = 0.2A (upper) VSAT2 IO = 0.2A (lower)
SH driver (OUT5N) Output constant current
IO1 IO2
Output saturation voltage 2
VSAT2
IC1 = 0.20V, Rf = 1Ω
IC1 = 0.20V, Rf = 1Ω, HOLD mode IO = 0.25A (lower)
178 190 202 mA
113 126 140 0.15 0.22 V (*3) For the characteristic within the guaranteed temperature range, shipping check is performed at Ta = 25°C.
For all temperature range, these are design guarantee and are not tested.
Package Dimensions
unit : mm (typ) 3260A
Pin Assignment
6.52413VC1VC2
0.5123456789
24VCC 23VB 22P-GND 21OUT1 20OUT2
4.46.4FCICIVREFS-GND
10.5(0.5)0.22120.15(1.0)1.2maxLB8650T
19OUT3 18OUT4 17P-GND 16OUT5N 15RFG 14OUT5P 13VB
0.08SANYO : TSSOP24(225mil)IN1IN2IN3
IN410IN511NC12
Top view
ILB01596
(Note) P-GND and VB, both 2-pins are connected.
No.7895-2/6
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LB8650T
Pd max - Ta900Mounted on a specified board:
800114.3mm×76.1mm×1.6mm,glass epoxy resin
700 600 500448 400 300 200 1000 020406080100--20Ambient temperature, Ta-°CILB01605
Truth Table (for AF/SH)
Allowable power dissipation, Pd max - mWInput
IN1 L H H L L L L L H H
IN2 L L L L H H H L L H
IN3 L L H H H L L L L
IN4 L L L L L L H H H
L IN5 L
OUT1
OUT2
OUT3
OUT4
Output OUT5P
OUT5N
- Vref - ICI
Mode
- - - - - H H L L
- - H L L L
- Standby
- - H L L L
H H H
H 0.9V - - - - L
H H H
- - - H - L H
-
0.6V 0.9V
L
AF or AE
- - L H H
L H
L
* * L
L H L H L
H
Brake
L
SH-ready
L
*
H
L H L H
- - - L
H L
- SH
- L H
-
- Hold
* : Don’t care.
- : Output OFF.
H : Constant voltage control with the constant voltage output (VC pin input voltage) 4 times. OUT1, 2, 3, and 4 outputs are set by VC1 input. OUT5P output is set by VC2 input.
It is necessary to place the oscillation-stopping capacitor (0.01µF) between the output pins. L : The formula for calculating the constant current output setting is as given below. IRFG = (ICI pin input voltage) / (RFG resistance value+0.05Ω) This 0.05Ω is for a common impedance of the output Tr emitter which drives constant current in the RFG pin and the sensing wiring for the constant current control amplifier.
No.7895-3/6
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LB8650T
Application Example
(1) Solenoid (constant current drive), stepping motor (constant voltage drive) SH/SOL
OUT5NVB
VC1
OUT4Vref
0.01µFR1
OUT3ICI
C1 R2P-GND RFGVBFC Rf0.01 to 0.1µF
OUT1
AF/STP OUT2 ILB01606
Timing chart for solenoid SH
ICI Rise correction VB is high. (Without C1) VB is low. (Without C1)
SOL/IO Rise correction coil current
SH closing HOLDSH SH closing operationpreparingILB01607
(1) ICI pin voltage is set to 0V in shutter ready mode of *LLLH input.
(2) At *LLHH input, solenoid is driven by constant current control. The ICI pin input voltage is set with the decay time constant to be larger than the coil decay time constant by using the external CR and the rise correction
occurs with respect to the coil wave. By doing this, stable shutter operation can be carried out with respect to the power source variations.
(Note) ICI pin rise compensation is made without C1 and the rise waveform of coil current is made at decrease of VB
power. C1 is set to the time constant lower than this waveform.
(3) At *HLHH input, solenoid current is controlled by 2/3, and it becomes HOLD state. • Constant current value setting: ICI voltage/Rf
(Note1) Consider the FC capacitor between 0.01 to 0.1µF to set the capacitance value that ensure no oscillation
problem at transfer to the HOLD mode. In particular, the solenoid with high inductance should have an allowance for capacitance.
No.7895-4/6
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LB8650T
(2) Solenoid (constant voltage drive), stepping motor (constant voltage drive) VB
VC1 VC2OUT4OUT5P 0.01µF
OUT30.01 to 0.1µFSH/SOL
P-GND VB
OUT1
AF/STPOUT2
ILB01608
The shutter mode is ON at *LLLH input. The solenoid is driven by constant voltage at LHLH. The constant voltage output is 4 times the VC2 pin input voltage. The voltage is controlled by 2/3 in HOLD mode.
OUT1, 2, 3, and 4 outputs are set by VC1 input, and it becomes 4 times the constant voltage output.
Internal equivalent circuit diagram
IN1OUT3IN2CPUIN3IN4IN5Logic unitConstantcurrentcontrolQuickchargecircuitryRFGS-GNDQuickdischargecircuitryOUT1Constantvoltage outputVBOUT4SH/VCMVCCVCCVC2OUT5POUT5NVBVBVC1RFGOUT2VC2VC1VrefICIFCP-GNDSolenoid SH ; 0.01 to 0.1µFVoice coil SH ; 0.01 to 0.1µFILB01609No.7895-5/6
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LB8650T
SpecificationsofanyandallSANYOSemiconductorproductsdescribedorcontainedhereinstipulatetheperformance,characteristics,andfunctionsofthedescribedproductsintheindependentstate,andarenotguaranteesoftheperformance,characteristics,andfunctionsofthedescribedproductsasmountedinthecustomer'sproductsorequipment.Toverifysymptomsandstatesthatcannotbeevaluatedinanindependentdevice,thecustomershouldalwaysevaluateandtestdevicesmountedinthecustomer'sproductsorequipment.SANYOSemiconductorCo.,Ltd.strivestosupplyhigh-qualityhigh-reliabilityproducts.However,anyandallsemiconductorproductsfailwithsomeprobability.Itispossiblethattheseprobabilisticfailurescouldgiverisetoaccidentsoreventsthatcouldendangerhumanlives,thatcouldgiverisetosmokeorfire,orthatcouldcausedamagetootherproperty.Whendesigningequipment,adoptsafetymeasuressothatthesekindsofaccidentsoreventscannotoccur.Suchmeasuresincludebutarenotlimitedtoprotectivecircuitsanderrorpreventioncircuitsforsafedesign,redundantdesign,andstructuraldesign.IntheeventthatanyorallSANYOSemiconductorproducts(includingtechnicaldata,services)describedorcontainedhereinarecontrolledunderanyofapplicablelocalexportcontrollawsandregulations,suchproductsmustnotbeexportedwithoutobtainingtheexportlicensefromtheauthoritiesconcernedinaccordancewiththeabovelaw.Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,includingphotocopyingandrecording,oranyinformationstorageorretrievalsystem,orotherwise,withoutthepriorwrittenpermissionofSANYOSemiconductorCo.,Ltd.Anyandallinformationdescribedorcontainedhereinaresubjecttochangewithoutnoticeduetoproduct/technologyimprovement,etc.Whendesigningequipment,refertothe\"DeliverySpecification\"fortheSANYOSemiconductorproductthatyouintendtouse.Information(includingcircuitdiagramsandcircuitparameters)hereinisforexampleonly;itisnotguaranteedforvolumeproduction.SANYOSemiconductorbelievesinformationhereinisaccurateandreliable,butnoguaranteesaremadeorimpliedregardingitsuseoranyinfringementsofintellectualpropertyrightsorotherrightsofthirdparties.This catalog provides information as of December, 2006. Specifications and information herein are subject to change without notice.
PSNo.7895-6/6
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