MB39A119 Fujitsu, MB39A119 Datasheet

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MB39A119

Manufacturer Part Number
MB39A119
Description
DC/DC Converter IC
Manufacturer
Fujitsu
Datasheet
www.DataSheet4U.com
FUJITSU SEMICONDUCTOR
www.DataSheet4U.com
ASSP for Power Supply Applications (Secondary battery)
DC/DC Converter IC of Synchronous
Rectification for charging Li-ion battery
MB39A119
DESCRIPTION
The MB39A119 is the Nch MOS drive of the synchronous rectification type DC/DC converter IC using pulse-width
modulation (PWM) type that can charge Li-ion battery from 1 cell to 4 cells and suitable for down-conversion.
This IC integrates built-in comparator for the voltage detection of the AC adapter and switches the power supply
to the AC adapter or battery automatically, enabling supply it to system. In addition, the constant voltage control
state detection function is built in, which prevents mis-detecting the full charge. The MB39A119 provides a wide
range of power supply voltage and low standby current, high efficiency, making it ideal for use as a built-in charge
device in products such as notebook PC.
FEATURES
• High efficiency : 97 % (Max)
• High-frequency operation : 1 MHz (Max)
• Built-in off time control function
• Built-in voltage detection function of AC adapter (ACOK, XACOK terminal)
• Preventing mis-detection for the full charge by the constant voltage control state detection function (CVM
PACKAGE
DATA SHEET
terminal)
28-pin plastic QFN
(LCC-28P-M10)
www.DataSheet4U.com
DS04-27247-1E
(Continued)

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MB39A119 Summary of contents

Page 1

... AC adapter or battery automatically, enabling supply it to system. In addition, the constant voltage control state detection function is built in, which prevents mis-detecting the full charge. The MB39A119 provides a wide range of power supply voltage and low standby current, high efficiency, making it ideal for use as a built-in charge device in products such as notebook PC ...

Page 2

... MB39A119 (Continued) • Built-in two constant current control circuits • Analog control of constant current value is possible ( + INE1, + INE2 terminal) • Built-in output stage for Nch MOS FET synchronous rectification • Built-in charge stop function at low input voltage • Output voltage setting accuracy : 4.2 V ± 0.74 % (Ta= − 10 ° °C) • ...

Page 3

... PIN ASSIGNMENT 28 VCC 1 −INC1 2 +INC1 3 ACIN 4 ACOK 5 CVM 6 +INE1 7 8 Note : Connect IC’s radiation board at bottom side to potential of GND. (TOP VIEW (LCC-28P-M10) MB39A119 CTL 21 20 GND 19 VREF OUTD −INE3 15 3 ...

Page 4

... MB39A119 PIN DESCRIPTION Pin No. Pin Name I/O ⎯ 1 VCC −INC1 INC1 ACIN I 5 ACOK O 6 CVM O + INE1 7 I −INE1 OUTC2 O + INC2 10 I −INC2 INE2 12 I − INE2 FB123 O −INE3 OUTD O ⎯ ⎯ VREF O ⎯ ...

Page 5

... Slope Control + − 2 OUTC2 − 0.3 V <Synchronous Cnt.> + +INC2 + − −INC2 − <OSC> 4.2 V <REF> bias (Vo) 0 VREF 5 VREF MB39A119 VCC 1 5 Reg OUT-1 27 Drv OUT-2 Drv-2 23 PGND <UVLO> VCC- UVLO VB- UVLO VREF- UVLO V CC CTL ...

Page 6

... MB39A119 ABSOLUTE MAXIMUM RATINGS Parameter Power supply voltage CB terminal input voltage Control input voltage Input voltage OUTD terminal output voltage ACIN input voltage ACOK terminal output voltage XACOK terminal output voltage CVM terminal output voltage Output current Power dissipation Storage temperature * : The packages are mounted on the dual-sided epoxy board (10 cm × ...

Page 7

... ACOK XACOK terminal CVM terminal CVM Duty ≤ (t=1/f × Duty) OUT OSC ⎯ OSC RT terminal T CS terminal S CB terminal B VB terminal VB VREF terminal REF ⎯ MB39A119 Value Unit Min Typ Max ⎯ ⎯ ⎯ −1 ⎯ −1 ⎯ ⎯ ...

Page 8

... MB39A119 ELECTRICAL CHARACTERISTICS Parameter Output voltage Reference voltage Input stability block Load stability [REF] Short-circuit output current Threshold voltage Hysteresis width Under voltage Threshold voltage lockout protection Hysteresis width circuit block [UVLO] Threshold voltage Hysteresis width Soft-start block Charge current [SOFT] ...

Page 9

... INC1 = − INC1 = INC2 CTL = ⎯ OUTCH ⎯ OUTCL OUTC1 = SOURCE OUTC1 = SINK MB39A119 25 °C) + Value Unit Min Typ Max ⎯ −50 −15 ⎯ nA ⎯ ⎯ 100* dB ⎯ ⎯ 1.2* MHz ⎯ ...

Page 10

... MB39A119 Parameter Current detection voltage Voltage gain Current detection Input offset voltage amplifier block [Current Input current Amp2] Frequency bandwidth Output voltage Output source current Output sink current PWM compara- tor block Threshold voltage [PWM Comp.] Output Output ON block resistance [Drv-1, 2] ...

Page 11

... − Load operating state standby state OFF CTL = CTLH CTL = CTLL CTL = CCS CTL = MB39A119 25 °C) + Value Unit Min Typ Max 12.75 12.8 12.85 V 2.056 2.12 2.184 V 1.959 2.02 2.081 V ⎯ ⎯ 0.1 V ⎯ µ ⎯ ...

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... MB39A119 TYPICAL CHARACTERISTICS Power Supply Current vs. Power Supply Voltage Power supply voltage V Reference Voltage vs. Load Current Load current I REF CTL Terminal Current, Reference Voltage vs. CTL Terminal Voltage 1000 900 800 ...

Page 13

... IN 2.4 kΩ −45 −90 −135 10 kΩ −180 −225 10M MB39A119 Ta = +25 °C VCC = 15 V CTL = 100 1000 (kΩ 4.2 V 240 kΩ − 8 OUT (13 (12) Error Amp1 ...

Page 14

... MB39A119 (Continued) Current Detection Amplifier, Gain, Phase vs. Frequency 50.0 40.0 30.0 20.0 10.0 0.0 −10.0 −20.0 −30.0 −40.0 −50.0 1k 10k 100k Frequency f (Hz) Current Detection Amplifier, Gain, Phase vs. Frequency 50.0 40.0 30.0 20.0 10.0 0.0 −10.0 −20.0 −30.0 −40.0 −50.0 1k 10k 100k Frequency f (Hz) Power Dissipation vs. Operating Ambient Temperature 5000 4500 4000 3800 ...

Page 15

... Amp1 to Error Amp3) depending on their output voltage. The PWM comparator circuit compares with either of low voltages between the triangular wave voltage generated by the triangular wave oscillator and the error amplifier output voltage, turns on the main side output transistor MB39A119 15 ...

Page 16

... Bias voltage block outputs 5 V (Typ) for the power supply of the output circuit and for setting the bootstrap voltage. (12) Off time control block (Off time Control) When MB39A119 operates by high on-duty, voltage difference of both ends of boot strap capacitor C decreasing gradually. In such the case, off time control block charges with C time (0.3 µ ...

Page 17

... The system restores voltage supply when the input voltage reaches the threshold voltage of the under input voltage detection comparator. Protection circuit (UV Comp.) operation function table When under input voltage is detected (Input voltage is lower than UV Comp. threshold voltage) , the logic of the following terminal is fixed. OUT-1 L OUT OUT-2 L OUT-2 L MB39A119 ...

Page 18

... MB39A119 3. Detection Functions (1) AC adapter voltage detection block (AC Comp.) When ACIN terminal (pin 4) voltage is lower than 2.0 V (Typ adapter voltage detection block (AC Comp.) outputs “Hi-Z” level to the ACOK terminal (pin 5) and outputs “L” level to the XACOK terminal (pin 22) . When CTL terminal (pin 21) is set to “L” level, ACOK terminal (pin 5) and XACOK terminal (pin 22) are fixed to “Hi-Z” level. ...

Page 19

... CONSTANT CHARGING VOLTAGE AND CURRENT OPERATION The MB39A119 is DC/DC converter IC with the pulse width modulation method (PWM method the output voltage control loop, the output voltage of the DC/DC converter is detected, and the Error Amp3 compares internal reference voltage 4.2 V and DC/DC converter output to output the PWM controlled signal. ...

Page 20

... MB39A119 SETTING THE CHARGE VOLTAGE The charge voltage (DC/DC output voltage) can be set by connecting external output voltage setting resistors (R1 and R2) to the -INE3 terminal (pin 15 sure to select a resistor value that allows you to ignore the on- resistance (35 Ω mA) of internal FET connected to the OUTD terminal (pin 16). ...

Page 21

... SETTING THE TRIANGULAR WAVE OSCILLATION FREQUENCY The triangular wave oscillation frequency can be set by the timing resistor (R (pin 18) . Triangular wave oscillation frequency : f 19500 fosc (kHz (kΩ) T 0.2 (V) R (Ω) S1 value (example) S1 Ichg 0 4 connected to the RT terminal T OSC MB39A119 OCDet ...

Page 22

... MB39A119 SETTING THE SOFT-START TIME To prevent rush current at start-up of IC, the soft-start time can be set by connecting soft-start capacitor (C the CS terminal (pin 17) . When the CTL terminal (pin 21) is set to “H” level and IC is started (V ) connected to the CS terminal (pin 17) is charged at 10 µA. ...

Page 23

... Battery Current setting voltage. Error Amp2 Output Error Amp3 Output Constant Voltage Constant Current MB39A119 The battery pack manufacturer in Japan thinks not the problem the current overshoot of 10ms or less. 23 ...

Page 24

... MB39A119 OPERATION OF SYNCHRONOUS RECTIFICATION CONTROL BLOCK CS terminal (pin 17) and 2.6 V (Typ) are compared. Output OUT-2 terminal (pin 24) for synchronous rectification side FET drive in the soft-start is fixed at “L” level. Output OUTC2 terminal of current detection amplifier block (Current Amp2) (pin 9) and 0.3 V (Typ) are compared. ...

Page 25

... The presence of AC adapter can be easily detected because the signal is output from the ACOK terminal (pin 5) to microcomputer etc. In this case, if CTL terminal (pin 21) is set in “L” level, IC become the standby state (I • Connection example of detecting AC adapter presence AC adapter CC Micon ACIN ACOK <AC Comp.> + − MB39A119 = 0 µA Typ) . XACOK 25 ...

Page 26

... MB39A119 (2) Automatic changing system power supply between AC adapter and battery The AC adapter voltage is detected, and the external switch at input side and battery side is changed automat- ically with the connection as follows. Connect CTL terminal (pin 21) to VCC terminal (pin 1) for this function. ...

Page 27

... µH −20 − 14.1 µF − 4.2 Ω −80 −100 mΩ −120 L −140 ESR = 100 mΩ −160 −180 10k 100k 1M 10M MB39A119 RS2 15 mΩ VBATT RS1 Ro 33 mΩ Co Rin1 ESR Rin2 1 (Ro + ESR) Lo × Co × 2π ( ...

Page 28

... MB39A119 • Method to obtain frequency characteristic of Error Amp Total frequency characteristic −10 −20 −30 −40 −50 −60 −70 −80 − 100 • Method to obtain frequency characteristic of DC/DC converter Total frequency characteristic Gain ...

Page 29

... DC/DC output − + MB39A119 • Additional ESR Board Pattern or connected resistor 29 ...

Page 30

... MB39A119 PROCESSING WITHOUT USING OF THE CURRENT AMP1 AND AMP2 When Current Amp is not used, connect +INC1 terminal (pin 3) and −INC1 terminal (pin 2) to VCC terminal (pin 1) , connect +INC2 terminal (pin 10) and −INC2 terminal (pin 11) to VREF terminal (pin 19) , and then leave OUTC2 terminal (pin 9) open. • ...

Page 31

... PROCESSING WITHOUT USING OF THE CS TERMINAL When soft-start function is not used, leave the CS terminal (pin 17) open. • Connection when no soft-start time is specified MB39A119 “Open” ...

Page 32

... MB39A119 I/O EQUIVALENT CIRCUIT • Reference voltage block VCC 1 + 1.25 V − 124.53 ESD protection element 41.47 GND 20 • Bias voltage block VCC 200 kΩ 2.5 V 200 kΩ GND • Triangular wave oscillator block VCC VREF (5 1.08 V − GND • Error amplifier block (Error Amp2) VCC (3 ...

Page 33

... GND 11 • Output block (synchronous rectification side OUT-2 27 OUT-1 23 PGND 26 VS GND • AC adapter detection block VREF (5.0 V) GND MB39A119 9 OUTC2 80 kΩ 20 kΩ −INC2 • Invalidity current prevention block 16 OUTD GND 22 5 ACOK XACOK 33 ...

Page 34

... MB39A119 APPLICATION EXAMPLE 1 R6 Q2-1 51kΩ Q2-2 R52 15mΩ R39 16kΩ R15 R40 24kΩ 75kΩ ACIN R41 4 16kΩ <AC Comp.> + − Hi Side only 2.0V <Current Amp1> +INC1 + 3 −INC1 ×25 − 2 100kΩ −INE1 R21 8 8V +INE1 24kΩ ...

Page 35

... MB39A119 Package Part No. µPA2752 SO-8 µPA1772 SO-8 SO-8 TPC8102 TUMD2 RSX051VA-30 1197A SBS006 SMD CDRH104R-5R2 3216 C3216JB1E475K 3216 ...

Page 36

... MB39A119 (Continued) Component Item R26 Resistor R27 Resistor R28 Resistor R32 Resistor R33 Resistor R34 Resistor R39 Resistor R40 Resistor R41 Resistor R45 Resistor R46 Resistor Note : NEC : NEC corporation TOSHIBA : TOSHIBA CORPORATION ROHM : ROHM CO., LTD. SUMIDA : Sumida Corporation TDK : TDK Corporation ...

Page 37

... DC/DC bias (V ) 0.2V O ON/OFF C T VREF 5. GND VREF RT R19 39kΩ C10 0.1µF MB39A119 System C21 R45 0.1µF 100kΩ Q5 R46 56kΩ 1µ lchg L1 Q1 0.1µF 5.2µH RS1 33mΩ R2 OUT-1 VS 15Ω ...

Page 38

... MB39A119 PARTS LIST 2 Component Item Q1-1, Q1-2 N-ch FET Q2-1, Q2-2 P-ch FET Q5 P-ch FET D1 Diode D4 Diode L1 Inductor C1 Ceramic condenser C2 Ceramic condenser C3 Ceramic condenser C4 Ceramic condenser C5 Ceramic condenser C6 Ceramic condenser C7 Ceramic condenser C9 Ceramic condenser C10 Ceramic condenser C11 Ceramic condenser C12 Ceramic condenser C13 Ceramic condenser C14 Ceramic condenser ...

Page 39

... MB39A119 Package Part No. 1608 PR0816P153D 1608 PR0816P163D 1608 PR0816P202D 1608 PR0816P104D 1608 PR0816P103D 1608 PR0816P104D 1608 PR0816P163D ...

Page 40

... MB39A119 SELECTION OF COMPONENTS • Nch MOS FET The Nch MOS FET for switching use should be rated for at least +20% more than the input voltage. To minimize continuity loss, use a FET with low R frequency operation, on-cycle switching loss will be higher so that power dissipation must be considered. In this application, the NEC µ ...

Page 41

... IN L ≥ × (24−16.8) 1 ≥ × 500 × 10 4.0 ≥ 5.04 µH = 4.0 A, fosc = 500 kHz ) = 25 mΩ (Typ (Typ mΩ (Typ (Typ obtained by the following formula × 0.7 500 × × (1 − 0.7) 3 × 0.7 3 MB39A119 41 ...

Page 42

... MB39A119 The load current satisfying the continuous current condition Vo Io ≥ t OFF 2L 16.8 ≥ × 2 × 5.2 × 10 500 × 10 −6 ≥ 0.97 A Ripple current : Peak value The peak ripple current must be within the rated current of the inductor. If the peak ripple current obtained by the following formula. ...

Page 43

... OFF 2L 12.6 ≥ 4.0 + × 2 × 5.2 × 10 500 × 10 −6 ≥ 4. 4.0 A, fosc = 500 kHz ) = 25 mΩ (Typ (Typ mΩ (Typ (Typ obtained by the following formula × 0.63 500 × × (1 − 0.63) 3 MB39A119 43 ...

Page 44

... MB39A119 2. Inductor (CDRH104R-5R2 : SUMIDA product) 5.2 µH (tolerance ± 30%) , rated current = 5.5 A −Vo ≥ × (24−12.6) ≥ × 500 × 10 4.0 ≥ 4.67 µH The load current satisfying the continuous current condition Vo Io ≥ t OFF 2L 12.6 ≥ × 2 × 5.2 × 10 500 × 10 − ...

Page 45

... When + INE1 terminal (pin 7) voltage is 2.25 V, and the input current is 6 obtained by the following formula. + INE1 × × 6 15.0 mΩ 6. Switching Pch FET (µPA1772 : NEC product, TPC8102 : TOSHIBA product) Q2-1, Q2-2, and Q5 must select an appropriate device according to the input current. MB39A119 ) is 4 obtained by the O 45 ...

Page 46

... MB39A119 REFERENCE DATA Conversion efficiency vs. Charging current (constant voltage mode) 100 0.01 Conversion efficiency vs. Charging current (constant voltage mode) 100 0.01 Conversion efficiency vs. Charging voltage (constant current mode) 100 ...

Page 47

... Charging current I Charging voltage vs. Charging current SW3 = ON SW3 = ON 10 SW4 = ON SW4 = OFF 0.0 0.5 1.0 1.5 2.0 2.5 Charging current I MB39A119 setting ( SW3 = OFF SW4 = OFF 3.0 3.5 4.0 4.5 5.0 ( 12.6 V setting O SW3 = OFF SW4 = OFF 3 ...

Page 48

... MB39A119 Switching waveform (constant voltage mode) OUT-1 (V) 20 OUT-2 (V) −5 OUT-1 (V) 20 OUT-2 (V) −5 VS (V) 48 OUT SW3 = OFF 5 SW4 = OFF OUT 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Switching waveform (constant current mode) OUT OUT 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Switching waveform (constant voltage mode) ...

Page 49

... Charging current I (A) O Oscillation frequency vs. Input voltage 600 fosc 550 500 450 400 350 300 V = 16.8 V setting 250 Ω 200 150 100 Input voltage V (V) IN MB39A119 3.5 4.0 4.5 5.0(µ 16.8 V setting O 4.00 5.00 24.0 22.0 20 18.0 16.0 14.0 12.0 10.0 8.0 6.0 4.0 2.0 0 (Continued) 49 ...

Page 50

... MB39A119 Soft-start operating waveform (constant current mode Soft-start operating waveform (constant current mode Soft-start operating waveform (constant current mode setting O SW3 = OFF SW4 = OFF ...

Page 51

... Soft-start operating waveform (constant voltage mode ( SW3 = OFF 1 SW4 = OFF 0 CTL MB39A119 Vo ( setting O SW3 = OFF SW4 = OFF CTL ( 50(ms ...

Page 52

... MB39A119 Soft-start operating waveform (constant voltage mode Soft-start operating waveform (constant voltage mode CVM 16.8 V setting O SW3 = OFF SW4 = OFF Io CTL CVM 16.8 V setting ...

Page 53

... Load-step response operation waveform (C.C mode→C.V mode MB39A119 Vo ( setting O SW3 = OFF SW4 = OFF 20(ms setting ...

Page 54

... MB39A119 Load-step response operation waveform (C.V mode→C.V mode Load-step response operation waveform (C.V mode→C.V mode 16.8 V setting O SW3 = OFF SW4 = OFF 20(ms ...

Page 55

... CTL setting O SW3 = OFF SW4 = OFF Io CTL setting O SW3 = OFF SW4 = OFF MB39A119 Vo ( CTL ( (ms CTL ( 50(ms) (Continued) 55 ...

Page 56

... MB39A119 (Continued) Load-step response operation waveform (C.V mode→C.C mode Load-step response operation waveform (C.C mode→C.V mode setting O SW3 = OFF SW4 = OFF ...

Page 57

... Working personnel should be grounded with resistance of 250 kΩ MΩ between body and ground. • Do not apply negative voltages. • The use of negative voltages below −0.3 V may create parasitic transistors on LSI lines, which can cause abnormal operation. ORDERING INFORMATION Part number MB39A119QN Package 28-pin plastic QFN (LCC-28P-M10) MB39A119 Remarks 57 ...

Page 58

... MB39A119 PACKAGE DIMENSION 28-pin plastic QFN (LCC-28P-M10) 5.00 ± 0.10 (.197 ± .004) INDEX AREA 0.08(.003) 2004 FUJITSU LIMITED C28067Sc-2 5.00 ± 0.10 3.50 ± 0.10 (.197 ± .004) (.138 ± .004) 0.50(.020) TYP 1.00(.039) MAX +0.05 0.20(.008) 0.02 – 0.02 +.002 .0008 – .0008 Dimensions in mm (inches) . Note : The values in parentheses are reference values. ...

Page 59

... MB39A119 FUJITSU LIMITED All Rights Reserved. The contents of this document are subject to change without notice. Customers are advised to consult with FUJITSU sales representatives before ordering. The information, such as descriptions of function and application circuit examples, in this document are presented solely for the purpose of reference to show examples of operations and uses of Fujitsu semiconductor device ...

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