FP5139 DC-DC升降压

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dc-dc升降压芯片,外置mos,带on/off管脚
FEELING TECHNOLOGY FP5139 in Descriptions TSSOP-8L Name No. 1/O Description FB Error Amplifier Inverting Input Top view Soft start and scP Function SCP Capacitor to this pin 3 P C power suppl ScP匚 VcC C3 FP5139 HE GNd BR/CTL 4 I Output Current Setting and Control Bri[ 9Fa-86L STOUT OUT O「 Totem-Pole Output GND 6 PIC Ground OSC 7 / OScillator Output: Connect Capacitor and Resistor to this pin for Frequency Adjustment comP Error Amplifier Compensation Output Marking Information TSSOP-8L FP5139 9Fa-86L Halogen Free Lot number Internal ID Per-Half month Halogen Free: Halogen free product indicator Lot Number: Wafer lot number's last two digits For Example: 132386TB>86 Internal ID: Internal Identification Code Per-Half Month Production period indicated in half month time unit For Example: January - A(Front Half Month), B (Last Half Month) February- C(Front Half Month), D(Last Half Month) Year: Production year's last digit This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 3/15 FEELING TECHNOLOGY FP5139 Ordering Information Part Number Operating Temperature Package MOQ Description FP5139BWR-LF -10C-+85 C TSSOP-8L 2500EA Tape &Reel Absolute Maximum Ratings Parameter Symbol Conditions I Min.Typ.Max.Unit Power Supply Voltage 15 Output Source Current 50 DA Output Sink Current 50 mA SOP8L,TA≤+25°C 570 mW Allowable Power Dissipation MSOP8L,TA≤+25℃ 400 mW TTS○P8L,TA≤+25°C mW Storage Temperature +125 SOP-8L,(soldering, 10 +260 sec Lead Temperature SSOP-8L,(soldering, 10 +260 sec MSOP-8L,(soldering, 10 +260 sec Suggested IR Re-flow Soldering Curve 10 sec 回mmm■ E回 F D +1.7°G/seC 12°c/sec d210 君180 +0.23℃/sec 434°C/sec 25 -Sec 1560 190220230 Ti Ime This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 4/15 FEELING TECHNOLOGY FP5139 Recommended operating Conditions Parameter Symbol Conditions Min. T Max. Unit Supply Voltage 18 15 Operating Temperature -10 85 DC Electrical Characteristics(Vcc=+2V, TA=25C, unless otherwise noted Parameter Symbol Test Conditions Min Typ. Max. Unit Under Voltage Lock-Out Section(UVLO) Low Threshold voltage VLoW 0.9 Upper Threshold Voltage V UPPER 1.1 1.3 1.5 Soft Start Section(SS) Input Source Current S SCP -1.0 -0.7 卩A Soft Start Threshold Voltage 0.8 0.9 1.0 Short Circuit Protection Section(SCP) Input Source Current Iscp Scp=0 1.5 10 -0.7 卩A SCP Threshold∨ oltage SCP 0.7 0.8 0.9 Oscillator Section Oscillation Frequency f RT=3.0KQ, C=270pF 400 500 600 KHZ Frequency Change With Voltage Af/Av vcc =2V to 15V 2 10 % Frequency Change With △f/△TTA=0Ct85℃ 5 % emperature Idle Period Adjustment Section Maximum Duty Cycle T RI =3.0kQ, Cr=270pF DUTY 85 % VEE=0.8V Makimum Duty Cycle Change 4TOuTY TA=-10-C to 85"C 10 % em Total Device Section Standby Current IsTANDBY Pin 4 is open or =Vcc Average Current Consumption vER3=3909,vcc=0-15V 5.0 10 A Error Amplifier Section Input threshold voltage FB COMP 450mV 480 mv VI Change With Voltage △V=BVcc=2vto15V △V 5 20 VI Change With Temperature △V=BTA=-10Cto85°℃ % Input Bias Current 1.0 .0 HA Voltage Gain Ay 100 V/V Frequency Bandwidth BWAy=0dB MHZ Output Voltage swing positive 0.78 0.87 Output Voltage Swing Negative VNEG 0.05 0.2 Output Source Current IsOURCE VCOMP =450 mV 40 UA Output Sink Current sINK VCOMP =450 mV 24 40 卩A This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 5/15 FEELING TECHNOLOGY FP5139 Parameter Symbol Test Conditions Min T Max Unit Output Section VoH1RB=390Q2, lo=-15mA 1.0 1.2 Output High Voltage RB=7509,lo=-10mA 08 1.0 Vcc=1.8V VoL1RB=390Q, lo=15mA 0.1 0.2 Output Saturation Voltage RB=7500,lo=10mA OL2 0.1 Vcc=1.8V 0.2 Output Source Current lOSOURCE RB=390Q, Vo=0.9V 40 20 mA Output Sink Current lOsING RB=390Q2, Vo=0. 3V 30 40 mA Internal pull-Down resistor R 40 ko Output Current Setting /Control Section Pin voltage Rg=3900 015022 0.3 nput Off Condition 20 0 UA Input on Condition -45 A Pin Current range -1.8 0.1 mA This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 6/15 FEELING ECHNOLOGY FP5139 ypical Operating Characteristics (Vcc=2V, TA=25C, unless otherwise noted) upply voltage vs Surply Current Supply voltage vs. Input Threshold voltage 12 RB-3902 0 Ambient tcmperaturc vs Input threshod vol: age variation ratio High Level Output TA=25℃ 0.8 0.6 0.4 10 0.2 10 Ambient Tcmpcraturc Te(C H: sh Level Output Current lout(mA) ow lcvcl output BR/CTL Fin Current vs Output Source Current 500 Vcc=2V 60 500 TA=25℃ VOUT =0.9V 30 40 60 100 0.4 0.8 1.2 1.6 -2.0 Low level oltpu: current lout(m A) bR/CTL pin current B3R(mA) Figure 5 Fiture 6 This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 7/15 FEELING TECHNOLOGY FP5139 BR:CTI pin CurrerI vs BR/CTI rin Vollage BR/CTI pin Current S Supply ChITenl 60 TA=25 C 5.0 4.0 300 3.0 另 100 0.4 0.8 1.2 -1.6 -2.0 20 60 BR/CTL pin Current IBR (mA) BR/CTL pin Current IBR (uA) Ficure 8 Triangle Oscillator Frequency Supply voltage vs Frcqucncy variation Ratio Timing resistance CT=270PF VCC RT=3. 0K() T=25C TAE 25 C 100K =10o 10 4K10K 40K100K400K1M Supply voltage vcc(v) Timing Resistor Rr(o) Tigure 10 Vcc=2V RT=L. OKQ This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 8/15 FEELING ECHNOLOGY FP5139 Function Description Voltage Reference A 1.25V regulator operating from Vcc is used to power the FP5139 internal circuitry. An internal resistive divider provides 0. 5V reference for the error amplifier, Soft-start(0.9V typ ) and SCP(0. 8V typ )circuits Error Amplifier The error amplifier compares a sample of the DC-Dc converter output voltage to the 0.5V reference and generates an error signal for the PWM comparator Output voltage of DC-DC converter is setting with the resistor divider using the following equation(see figure 12) R1 OUT 1+ 0.5 Error Amplifier ^八 500 FP5139 Figure 12 Error Amplifier with Feedback resistance divider Oscillator The oscillator frequency can be set from 20KHz to 1 MHz by connecting a resistor and a capacitor at OSC pin of FP5139 to ground. The oscillator frequency can be determined by using the graph shown in Figure 9 The oscillator output is a sawtooth wave with a minimum value of approximately 0. 1v and a maximum value of approximately 0.6V. The PWM comparator compares the oscillator voltage with error amplifier output voltage, internal maximum duty control voltage(0.6V typ ) and soft start setting voltage. When the sawtooth wave voltage is lower than all of above three-output voltage, the output o FP5139 is high(Turn on external NPn transistor or NMOs) This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 9/15 FEELING ECHNOLOGY FP5139 Under Voltage Lockout ( UVLO) The under voltage lockout circuits turn the output off whenever the supply voltage drops too low (approximately 0. 9v at 25C)for proper operation. A hysteresis voltage of 200mv eliminates false triggering on noise and chattering Soft Start/ Short-circuit protection(SS/SCP) The soft start is functional after power on the interval of soft start time is determined by a capacitor connected to SCP pin(pin 2 ).When soft start function finished, the internal soft start voltage is setting high, but external SCP pin is setting low in order to change to short circuit detection protection function The time of soft start is TsmS|=0.35×C|uF The short circuit protection is triggered when a heavy loading makes output voltage drop and error amplifier output(COMP pin) is larger than Vpos(. 9V typ ) The SS pin capacitor will be charged to the SCP threshold voltage(0.8V typ ) then FP5139 output is disabled (internal pull-low) and the capacitor is discharged to low. The time of short circuit protection is scplmS|=0.8×C|F Output Transistor The FP5139 has a totem-pole transistor with a 40mA source/sink current capability to drive an external NPn transistor or NMOS directly. The driving current capability depends on a resistor R that is connected to BR/CTL pin(Pin4 )of FP5139. see figure 13) FP5139 R Control Q1 Figure 13 Output Transistor Driving Control Circu This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product Websitehttp://www.feeling-tech.com.tw Rev. 1.1 10/15

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