ASSP Power Supply Applications (Lithiumion Battery Chargers) DC/D
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DS04-27700-2E
ASSP Power Supply Applications (Lithiumion Battery Chargers)
DC/DC Converter (High Precision with Constant-current Function)
MB3813A/MB3833A/MB3843
DESCRIPTION
FUJITSU MB3813A/33A/43 pulse width modulation (PWM) DC/DC converter with independent output voltage current setting capability. on-chip output setting resistance enables high precision output voltage control. Also, output voltage switching feature with either graphite-electrode coke-electrode lithium-ion batteries makes this ideal internal battery chargers notebook personal computers similar applications. Cell count 3-cell 2-cell 1-cell V/8.2 V/4.1 Output voltage 12.6 V/12.3 MB3813A MB3833A MB3843 Part number
FEATURES
Output setting resistance on-chip high precision output voltage: ±1.0% enables output voltage selection High precision reference voltage source: 1.0% High frequency operating capability: max. On-chip current detector amplifier with wide in-phase input voltage range:
(Continued)
PACKAGE
16-pin Plastic SSOP
(FPT-16P-M05)
MB3813A/MB3833A/MB3843
(Continued) On-chip standby function On-chip input voltage detector circuit On-chip soft start control circuit On-chip output overshoot protection circuit rapid load changes On-chip totem-pole output circuits P-ch. devices
MB3813A/MB3833A/MB3843
ASSIGNMENT
(Top view)
Vin1 -IN2 -IN1 Vin2
VREF
(FPT-16P-M05)
MB3813A/MB3833A/MB3843
DESCRIPTION
Symbol Vin1 -IN2 -IN1 Vin2 VREF Descriptions Input voltage detector block (VLDET) input Current detector amplifier (Current Amp.) input Output voltage feedback input Error amplifier (Error Amp.2) inverted input Error amplifier (Error Amp.1) inverted input Error amplifier (Error Amp.1, common) output Power supply control level signal input sets standby mode. DC/DC converter charging current setting input Reference voltage output Output voltage switching level output voltage: MB3813A 12.6 MB3833A MB3843 level output voltage: MB3813A 12.3 MB3833A MB3843 Soft start capacitor connection Triangular wave frequency setting resistor connection Triangular wave frequency setting capacitor connection Power supply Totem-pole output Ground
-IN2
<Current Amp. block> <Error Amp. block> <OUT block> <PWM Comp. block> <Error Amp. block>
BLOCK DIAGRAM
Vin2
-IN1
2.44 <SEL block>
<SOFT block> bias
<VLDET block> <OSC block> <UVLO block>
<Ref block>
Vin1
MB3813A 10.1 MB3833A MB3843 MB3813A MB3833A MB3843 <CTL block> (2.5
1.26 VREF pins)
MB3813A/MB3833A/MB3843
MB3813A/MB3833A/MB3843
ABSOLUTE MAXIMUM RATINGS
Parameter Power supply voltage Input voltage Control input voltage Select input voltage Output current Peak output current Allowable dissipation Storage temperature Symbol VCTL VSEL Tstg +25°C Condition Vin1, IN1, Duty fOSC Duty) Value Min. Max. 440* +125 Unit
When mounted cm-square dual-sided epoxy base board WARNING: Semiconductor devices permanently damaged application stress (voltage, current, temperature, etc.) excess absolute maximum ratings. exceed these ratings.
RECOMMENDED OPERATING CONDITIONS
Parameter Symbol Condition MB3813A Power supply voltage Reference voltage output current Input voltage Control input voltage Select input voltage Peak output current Oscillator frequency Soft start capacitance Timing resistance Timing capacitance Operating temperature MB3833A MB3843 VCTL VSEL fOSC Vin1, IN1, Vin2 Duty fOSC Duty) Value Min. -300 Typ. Max. 10000 Unit
WARNING: Recommended operating conditions normal operating ranges semiconductor device. device's electrical characteristics warranted when operated within these ranges. Always semiconductor devices within recommended operating conditions. Operation outside these ranges adversely affect reliability could result device failure. warranty made with respect uses, operating conditions, combinations represented data sheet. Users considering application outside listed conditions advised contact their FUJITSU representative beforehand.
MB3813A/MB3833A/MB3843
ELECTRICAL CHARACTERISTICS
(VCC Vin1 VSEL +25°C) Parameter
Output voltage Reference voltage block (Ref) Input stability Load stability Under voltage lockout circuit block (UVLO) Threshold voltage Hysteresis voltage Threshold voltage Symbol VREF Line Line Line Load Input voltage detector block (VLDET) Hysteresis voltage Input current Soft start block (UVLO) Triangular wave oscillator block (OSC) Charge current Oscillator frequency Vin1 Vin1 Vin1
Condition
VREF -500 VREF
Value Min.
2.475 10.2 -1.0 -1.4
Typ.
2.500 11.0 0.57 -1.0
Max.
2.525 10.0 10.0 10.0 10.0 0.35 11.8 -0.6
Unit
Remarks
MB3813A MB3833A MB3843
MB3813A MB3833A MB3843 MB3813A MB3833A MB3843 MB3813A MB3833A MB3843
fOSC
12.474
12.60 8.40 4.20 12.60 8.40 4.20
12.726 8.484 4.242 12.79 8.53 4.26
MB3813A MB3833A MB3843 MB3813A MB3833A MB3843
8.316 4.158 12.41
Error amplifier (Error Amp.1)
Threshold voltage
-30°C +85°C
8.27 4.13
(Continued)
MB3813A/MB3833A/MB3843
(VCC Vin1 VSEL +25°C) Parameter
Symbol Threshold voltage Line Input stability Error amplifier (Error Amp.1) Line Line IIN2 IIN2 Input current IIN2 IIN2 IIN2 IIN2 Input resistance Error amplifier (Error Amp.2) Input bias current Input offset voltage Voltage gain Frequency bandwidth Error amplifiers (Error Amp.1,2 common) Output voltage Output source current Output sink current ISOURCE Vin2 output 12.6 output output 12.7 12.6 Vin1 12.6 Vin1 Vin1 -30°C +85°C
Condition
Value Min.
12.177 8.118 4.059 12.11 8.07 4.04 -1.0 -1.0 -1.0 -400
Typ.
12.30 8.20 4.10 12.30 8.20 4.10 10.1 100* 800* -120
Max.
12.423 8.282 4.141 12.49 8.33 4.16 10.0 10.0 10.0 13.2
Unit
Remarks MB3813A MB3833A MB3843 MB3813A MB3833A MB3843 MB3813A MB3833A MB3843 MB3813A MB3833A MB3843 MB3813A MB3833A MB3843 MB3813A MB3833A MB3843
ISINK
Standard design value
(Continued)
MB3813A/MB3833A/MB3843
(VCC Vin1 VSEL +25°C) Parameter
Symbol Current detector amplifier block (Current Amp.) IIN1 Input current IIN1 IIN1 In-phase input voltage range Voltage gain Threshold comparator block voltage (PWM) resistance Output block (OUT) Output voltage
Condition
Vin2 Vin2 0.75 Vin2 Vin2 0.75 Vin2 Vin2 0.75 Vin2 Vin2 0.75
Value Min.
Typ.
Max.
Unit
Remarks MB3813A MB3813A MB3833A MB3833A MB3843 MB3843
Threshold voltage
12.7 12.6
MB3813A MB3833A MB3843
VT100
12.7 12.6 Duty cycle Duty cycle 100%
-1.0
MB3813A MB3833A MB3843
Standby leak current Power supply operating mode Standby mode Input current
Voltage
Power supply control block (CTL)
VOFF
Voltage
-1.0
(Continued)
MB3813A/MB3833A/MB3843
(Continued)
Parameter
12.3 output mode Symbol
(VCC Vin1 VSEL +25°C) Condition Value Min.
Typ.
Max.
Unit
Remarks
MB3813A
output mode
voltage
MB3833A
output mode
Output voltage selection block (SEL)
MB3843
12.6 output mode
VOFF
voltage
MB3813A
output VOFF mode output VOFF mode Input current
MB3833A MB3843
-1.0 -1.0
Input current when power supply Standby current General Power supply current ICCS
-1.0
output voltage level
MB3813A/MB3833A/MB3843
TYPICAL CHARACTERISTICS
Reference voltage Power supply voltage characteristics Reference voltage VREF Vin1 20.5 +25°C Reference voltage VREF load current characteristics Reference voltage VREF Power supply voltage VREF load characteristics (mA) Vin1 +25°C
Reference voltage Temperature characteristics Reference voltage VREF -0.5 -1.0 -1.5 -2.0 Temperature (°C) Reference voltage VREF Vin1
Reference voltage Control voltage characteristics +25°C
Control voltage VCTL
Control current Control voltage characteristics Control current ICTL (µA) Control current VCTL +25°C
(Continued)
MB3813A/MB3833A/MB3843
Error Amp. threshold voltage
Error Amp. Threshold voltage
Error amp. threshold voltage Temperature characteristics Vin1 -0.5 -1.0 -1.5 -2.0 Temperature (°C)
Error amp. Threshold voltage Temperature characteristics Vin1 -0.5 -1.0 -1.5 -2.0 Temperature (°C)
Error Amp. gain, phase Frequency characteristics Gain (dB) Frequency (Hz) Phase -135 -180 VREF
Error Amp.
Triangular wave oscillator frequency fOSC (Hz)
Triangular wave oscillator frequency fOSC (Hz)
Triangular wave frequency resistance characteristics
Triangular wave frequency capacitance characteristics
1500
resistance
capacitance
(Continued)
MB3813A/MB3833A/MB3843
(Continued)
Triangular wave oscillator frequency fOSC (kHz)
Triangular wave oscillator frequency fOSC (kHz)
Triangular wave frequency Power supply voltage characteristics Data shown MB3843 Vin1 Power supply voltage
Triangular wave frequency Temperature characteristics Vin1
Tenperature (°C)
Triangular wave maximum amplitude voltage
Triangular wave maximum amplitude voltage Triangular wave frequency characteristics Vin1
Power supply current Power supply voltage characteristics Power supply current (mA) Vin1 +25°C
MB3843
MB3833A
MB3813A
Power supply voltage
Triangular wave frequency fOSC (HZ)
MB3813A/MB3833A/MB3843
FUNCTIONAL DESCRIPTION
Switching Regulator Block
Reference voltage circuit (Ref) reference voltage circuit uses voltage supply from (pin generate temperature compensated, stable voltage 2.50 reference voltage internal circuits chip. also possible supply reference voltage output external circuits through VREF (pin Triangular wave oscillator circuit (OSC) connecting (pin (pin respectively capacitance resistance timing, triangular oscillator waveform generated. triangular wave input comparator circuits same time, also supplied external device from terminal. Error amplifier circuit (Error Amp.1) error amplifier circuit used detect output voltage from switching regulator produces control signal. external resistance required error amplifier inversion input pin, because output voltage setting resistance connected within output voltage settings defined MB3813A 12.6 V/12.3 MB3833A V/8.2 MB3843 V/4.1 optimum levels respectively with 3-cell, 2-cell 1-cell lithium-ion batteries. Also, connecting feedback resistance capacitance between error amplifier (pin (pin possible desired level loop gain provide stabilized phase compensation system. (pin connected soft start capacitor prevent current surges startup. soft start detected error amplifier, which provides constant soft start time independent output load. Current detector amplifier circuit (Current Amp.) current detector amplifier provides amplification voltage drop between ends output sensor resistor (RS) switching regulator, that occurs flow charging current. This voltage drop compared voltage Vin2 (pin next stage error amplifier circuit (Error Amp.2), used control charging current. Power supply control circuit (CTL) level signal input (pin places standby mode. standby mode, circuits other than input detection circuits switched off. comparator circuit (PMW Comp.) This voltage-pulse width conversion circuit that controls output duty error amplifier circuits (Error Amp.1, according output voltage. During intervals when triangular waveform lower than eror amplifier output voltage, external output transistor switched Output circuit (OUT) output circuit uses totem-pole configuration capable driving external P-ch. device.
MB3813A/MB3833A/MB3843
Output Voltage Switching Function
(pin capable output levels battery cell. Output voltage settings model voltage level Model MB3813A MB3833A MB3843 Output voltage 12.6 12.3 Units
Protection Functions
Input voltage detector circuit (VIDET) When input voltage supply from adapter other source detected Vin1 (pin falls below (MB3813A), below (MB3833A), below (MB3843), internal reference voltage circuit switches off. Under voltage lockout circuit (UVLO) Power surges power-on, momentary under-voltage situations cause abnormal operation control which lead damage deterioration systems. This circuit prevents abnormal peration during times voltage using supply voltage detect level internal reference voltage, switching external output transistor create 100% rest interval. Once supply voltage recovers level above threshold voltage under voltage lockout circuit, operation restored.
MB3813A/MB3833A/MB3843
METHOD SETTING CHARGING CURRENT
charging current level (output limit current level) Vin2 (pin
Charging current level (output limit current level) (MAX) Vin2 output sensing resistance
METHOD SETTING SOFT START TIME
startup, capacitor (Cs) connected (pin begins charging. error amplifier compares soft start setting voltage, which proportional voltage, output feedback voltage produces soft start varying duty (pin 15). soft start time determined formula below. Because voltage input error amplifier, soft start time setting dependent output current value.
Soft start time (time output setting voltage [sec] [µF]
ERROR AMP. BLOCK OVERSHOOT PROTECTION CIRCUIT
This built-in circuit responds rapid fluctuations charging current such occur when inserting removing chargeable battery, clamping inverted input signal (-IN1 -IN2) from error amps (Error Amp.1 Error Amp.2) suppress changes output voltage.
CTL, EQUIVALENT CIRCUITS
-IN2
<Current block> <Error Amp2 block> <OUT blolck> <PWM Comp blolck>
<Error Amp1 block>
APPLICATION EXAMPLE
VBATT
MTD20P03
Vin2
MBRS 130LT3
-IN1
39000 2.44 <SEL block> <SOFT block> bias
39000
DC-IN
<VLDET block> <OSC block> 1.26 pins) VREF MTD20P03: Product Motorola Inc. MBRS130LT3: Product Motorola Inc. <UVLO block>
<Ref block>
Vin1
(2.5
<CTL block>
MB3813A/MB3833A/MB3843
MB3813A/MB3833A/MB3843
REFERENCE DATA
Charging voltage Charging current characteristics <MB3813A> Charging voltage VBATT
Charging current
Charging voltage Charging current characteristics <MB3833A> Charging voltage VBATT
Charging current
Charging voltage Charging current characteristics <MB3843> Charging voltage VBATT
Charging current
(Continued)
MB3813A/MB3833A/MB3843
(Continued)
Soft start operation waveforms
<MB3813A> VBATT Vin2
1000
(ms)
<MB3833A> VBATT Vin2
1000 (ms)
<MB3843> VBATT Vin2
1000
(ms)
MB3813A/MB3833A/MB3843
USAGE PRECAUTION
Device settings must exceed absolute maximum ratings.
Usage under conditions exceeding absolute maximum ratings permanently damage devices. Note also that normal operation usage within recommended operating conditions preferred, that reliability devices adversely affected when used outside these conditions.
Devices should used within recommended operating conditions.
Recommended operating conditions recommended values within which device warranted operate normally. Rated values electrical characteristics warranted within range recommended operating conditions within conditions listed condition column each parameter.
Printed circuit board ground lines should designed consideration common impedance values. Observe precautions against static electricity.
Containers which semiconductors placed should either protected against static electricity, conductive material. After devices mounted, conductive bags conductive containers when storing transporting printed circuit boards. Working surfaces, tools instruments should properly rounded. Workers should grounded ground line with resistance series between worker ground.
ORDERING INFORMATION
Part number MB3813APFV-G-BND MB3833APFV-G-BND MB3843PFV-G-BND Package 16-pin Plastic SSOP (FPT-16P-M05) Remarks
MB3813A/MB3833A/MB3843
PACKAGE DIMENSION
16-pin Plastic SSOP (FPT-16P-M05) These dimensions inclule resin protrusion.
5.00±0.10(.197±.004)
1.25 -0.10 .049 -.004
+0.20 +.008
(Mounting height)
0.10(.004)
INDEX
4.40±0.10
(.173±.004)
6.40±0.20 (.252±.008)
5.40(.213)
0.65±0.12 (.0256±.0047)
0.22 -0.05 .009
+0.10 +.004 -.002
0.15 -0.02 .006 -.001
+0.05 +.002
Details part 0.10±0.10(.004±.004) (STAND OFF)
4.55(.179)REF
0.50±0.20 (.020±.008)
1994 FUJITSU LIMITED F16013S-2C-4
Dimensions (inches)
MB3813A/MB3833A/MB3843
FUJITSU LIMITED
further information please contact:
Japan FUJITSU LIMITED Corporate Global Business Support Division Electronic Devices KAWASAKI PLANT, 4-1-1, Kamikodanaka Nakahara-ku, Kawasaki-shi Kanagawa 211-8588, Japan Tel: 81(44) 754-3763 Fax: 81(44) 754-3329
Rights Reserved. contents this document subject change without notice. Customers advised consult with FUJITSU sales representatives before ordering. information circuit diagrams this document presented examples semiconductor device applications, intended incorporated devices actual use. Also, FUJITSU unable assume responsibility infringement patent rights other rights third parties arising from this information circuit diagrams. FUJITSU semiconductor devices intended standard applications (computers, office automation other office equipment, industrial, communications, measurement equipment, personal household devices, etc.). CAUTION: Customers considering products special applications where failure abnormal operation directly affect human lives cause physical injury property damage, where extremely high levels reliability demanded (such aerospace systems, atomic energy controls, floor repeaters, vehicle operating controls, medical devices life support, etc.) requested consult with FUJITSU sales representatives before such use. company will responsible damages arising from such without prior approval. semiconductor devices have inherent chance failure. must protect against injury, damage loss from such failures incorporating safety design measures into your facility equipment such redundancy, fire protection, prevention over-current levels other abnormal operating conditions. products described this document represent goods technologies subject certain restrictions export under Foreign Exchange Foreign Trade Japan, prior authorization Japanese government will required export those products from Japan.
http://www.fujitsu.co.jp/
North South America FUJITSU MICROELECTRONICS, INC. Semiconductor Division 3545 North First Street Jose, 95134-1804, Tel: (408) 922-9000 Fax: (408) 922-9179 Customer Response Center Mon. Fri.: (PST) Tel: (800) 866-8608 Fax: (408) 922-9179
http://www.fujitsumicro.com/
Europe FUJITSU MIKROELEKTRONIK GmbH Siebenstein 6-10 D-63303 Dreieich-Buchschlag Germany Tel: (06103) 690-0 Fax: (06103) 690-122
http://www.fujitsu-ede.com/
Asia Pacific FUJITSU MICROELECTRONICS ASIA #05-08, Lorong Chuan Tech Park Singapore 556741 Tel: (65) 281-0770 Fax: (65) 281-0220
http://www.fmap.com.sg/
F9812 FUJITSU LIMITED Printed Japan
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