Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 1.5A LOA AD SWIT TCH WITH CON NTROLL LED TU URN-ON FEATUR RES DES SCRIPTIO ON ▓ Integrated 1.5A Single e Channel Lo oad Switch The APE8988 is a low RON load sw witch with ▓ Input Volttage Range: 0.8V to 5.5V V contro olled turn on. It conttains one N-channel ▓ Low Thre eshold Contro ol Input MOSFET that ca an operate o over an inp put voltage ▓ Quick Ou utput Discharrge Transisto or range e of 0.8V to 5.5V an nd support maximum ▓ Over-Tem mperature Prrotection contin nuous curre ent up to 1.5A. The switch is ▓ Over Currrent Protectiion contro olled by an on/off o input ((EN), which is capable ▓ Short Circuit Protectio on of in nterfacing directly d with h low-voltag ge control ▓ Open-Dra ain Fault Flag Output signals. ▓ Low ON-Resistance RON = 40mΩ Additional feature es include a 330Ω on-chip load ▓ Halogen Free Producct resisttor is added for output quick discha arge when switch h is turned off. A well p protection is s equipped APPLICATIONS ▓ Telecom Systems ▓ Set-Top-B Box ▓ Consume er Electronicss ▓ Notebookks / Netbooks when the device e enters ha ard short circuit c and therm mal shutdown n. The APE8988 A is available a in ssmall SOT-26 package with smallest s com mponents. TYPICA AL APPLICATION + +5V RF 10kΩ~100kΩ VB BIAS *R1 VIN FLAG FLG VIN 10kΩ C IN 1uF APE E8988 VOUT T EN GN ND *C1 0.1uF VOUT COUT 0.1uF * *Option for flag g transient filteriing Data and speecifications suubject to changge without nottice 1 20131015V1.22 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 ORDERING / PA ACKAGE INFORM MATION APE898 88X Top View T S SOT-26 Pack kage Type Y: SOT-26 FLG G VBIAS EN 6 5 4 (Marking) 1 GND D 2 VIN 3 VOUT ABSOLU UTE MAX XIMUM RATINGS R S (at TA=25°C C) VIN -0.3V V to 6V VBIAS -0.3 to 6V VOUT VIN+ +0.3V EN, /FLG -0.3V V to 6V Storage Temperature Range R (TST) -65 to t +150°C Junction Te emperature (TJ) 150°°C Lead Temp perature (Soldering, 10se ec.) 260°°C Thermal Re esistance from Junction to t Ambient (R RθJA) SOT-26 250°°C/W RECOM MMENDED D OPERA ATING CONDITIO C ONS VIN 0.8V V to 5.5V VBIAS 4.5V V to 5.5V (VB BIAS≧VIN) VOUT . VIN CIN ≧0.1uF Junction Te emperature (TJ) 125°°C Operating Temperature T e Range (TA ) -40°C to 85°C 2 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 ELECTR RICAL SP PECIFICA ATIONS (VIN=0.8V to o 5.5V, VBIAS=5V, = CIN=1uF F, COUT=0.1u uF, TA =25°C, unless othe erwise speciffied) P PARAMETER R SYM ONDITION TEST CO MIN TYP AX MA UNIT 30 50 5 uA 1 uA 4.2 4 V Quiescent Current C IBIAS VEN=5V, IOUT=0A Shutdown Current C ISD VEN=GND VUVLO Threshold VHYS Hysteresis 0.4 Switch ON Resistance R RON VEN=VBIAS, IOUUT=200mA 40 Current Lim mit Threshold ILM VOUT Rise Time tSS Under-Volta age Lockout Output Pull--Down Resisstance ROPD FLAG Delayy Time (Note1) tDELAY FLAG ON Resistance R RFLG EN Input Le eakage Curre ent EN Thresho old Thermal Shutdown Thre eshold (Note1) 3.0 3.6 V 50 5 1.8 A VIN=5V 650 VIN=5V, VEN=0 0V 330 om fault condition to FLA AG fro 20 IEN VEN=5V or GN ND VIH on n VIL offf TSD Hysteresis us 400 3 asssert mΩ Ω ms 50 5 Ω 1 uA 1.6 V 0.6 0 V 140 o 30 o C C Note1: Guarantee by de esign, not pro oduction testted. 3 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 PIN DES SCRIPTIO ONS PIN No. PIN SYMBOL 1 G GND G Ground. 2 V VIN I Input Power Supply. 3 VO OUT 4 E EN 5 VB BIAS 6 /F FLG PIN DESC CRIPTION S Switch outpu ut. S Switch control input, activ ve high. Do not n leave floa ating. B Bias Voltage e. O Open-drain f fault flag outp put. BLOCK DIAGRA AM VIN VBIAS U UVLO Current Limiting Osscillator Charrge Pump VOUT Contrrol Logic Output Discharge Th hermal Pro otection FLG EN GND 4 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 TYPICA AL PERFO ORMANC CE CHAR RACTERISTICS CIN=1µF, COUT o=0A, ch1: VEN, ch2: VOUUT, ch3: /FLG G, ch4: IIN O =0.1µF, Io Fig.1 Turn-on Response, R V VIN=0.8V T Resp ponse, VIN=1.2V Fig.2 Turn-on R V VIN=1.5V Fig.3 Turn-on Response, Fig.4 Turn-on T Resp ponse, VIN=1.8V 5 Turn-on Response, R V VIN=3.3V Fig.5 Fig.6 Turn-on T Resp ponse, VIN=5.0V 5 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 TYPICA AL PERFO ORMANC CE CHAR RACTERISTICS (C Continued d) 500 700 Cin=1uF, Cout=0.1uF, Io=0A 450 Cin=1u uF, Cout=0.1uF F, Io=0A 600 400 500 300 400 250 tR (us) tD-ON (us) 350 200 150 300 200 100 100 50 0 0 0.8 1.4 2.0 2.6 3.2 VIN (V) 3 3.8 4.4 5.0 Fig g.7 Turn-on Delay Time vs. VIN 1000 4.5 950 2.6 3.2 V (V) VIN 3.8 4.4 5.0 Cin=1uF, Cout=0.1uF F, Io=0A 900 3.5 850 3.0 tF (us) tD-OFF (us) 2.0 Fig.8 VOUT Rise e Time vs. VIN V 5.0 4.0 2.5 2.0 1.5 800 750 700 1.0 650 0.5 0.0 600 0.8 1.4 2.0 2.6 3.2 VIN (V) 3 3.8 4.4 5.0 0 0.8 Fig g.9 Turn-offf Delay Time vs. VIN 4 1.4 2.0 2.6 3.2 V (V) VIN 3.8 4.4 5.0 0 VOUT Fa all Time vs. VIN V Fig.10 3.0 60 V VBIAS=VIN=5V, , Io=1A VBIAS= =VIN=5V 2.7 55 2.4 50 2.1 45 ILM (A) RON (mΩ) 4 1.4 0.8 40 1.8 1.5 1.2 35 0.9 30 0.6 25 0.3 20 0.0 -40 -20 0 20 40 60 TJ (°C) 80 100 120 0 Fig.11 RONN vs. Tempera ature -40 -2 20 0 2 20 40 TJ (°C) 6 60 80 Fig.12 Current Limit vs. Temperrature 6 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 TYPICA AL PERFO ORMANC CE CHAR RACTERISTICS (C Continued d) 4.5 2.0 4.0 1.8 3.5 1.6 1.4 VEN (V) VBIAS (V) 3.0 2.5 2.0 1.5 1.0 0.8 0.6 1.0 0.4 UVLO-H UVLO-L 0.5 VEN-H 0.2 0.0 VEN-L 0.0 0 -40 -20 0 20 40 TJ (°C) 60 -40 80 Fig.13 UVLO Thrreshold vs. Temperature Te -20 0 2 20 40 TJ (°C) 60 6 80 Fig.14 EN E Threshold d vs. Temperature 45 3.5 40 3.0 35 2.5 30 2.0 IBIAS (uA) FLAG Delay Time (ms) 1.2 1.5 25 20 15 1.0 10 0.5 VIN=0.8V V 5 0.0 VIN=5V V 0 0 -40 -20 0 20 40 TJ (°C) 60 80 ay Time vs. Temperature T Fig.15 FLAG Dela -40 -20 0 20 4 40 60 TJ (°C) 80 100 120 Fig.16 VBIAS V Curren nt vs. Tempe erature 7 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 APPLICATION IN NFORMA ATION On/Off Con ntrol The load sw witch is conttrolled by the e EN pin. Th he EN pin is s active high h and has a low thresho old making itt capable of interfacing with w low volta age signals. The EN pin n can be use ed with standard 1.8V, 2.5V 2 or 3.3V V GPIO logic threshold. Do D not leave the t EN pin flo oat. The Figure1 17 shows the e VOUT on/o off definition. tD-ON: VOUT T turn-on dela ay time tR: VOUT risse time tD-OFF: VOUT T turn-off delay time tF: VOUT fall time EN 90 0% 90% 10% 10% % VOUT tD-ON tR tD-OFF tF Fig.17 ON/OFF Waveform W FLAG Indic cator The APE89 988 providess an error ind dicator (/FLG G) output, which w is an open-drain o output requiring a pull-up p resistor. Typ pically conne ect to +5V bias b supply th hrough a 10kΩ resistor. The FLAG ccomparator continuously c y monitors th he fault cond dition for ovver current, short circuitt and therma al shutdown n conditions. If the faultt condition ke eeps for 3mss, /FLG becomes low imm mediately. Input Capa acitor An input capacitor is reccommended to be placed d between VIN and GND to limit the vvoltage drop on the inputt supply durin ng high curre ent applicatio on. Output Cap pacitor Setting a CIN greater th han the COUTT is highly re ecommended d. Since the internal bod dy diode is in n the NMOS S switch, this prevents the e current flow ws through th he body diod de from VOU UT to VIN wh hen the syste em supply iss removed. 8 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 APPLICATION IN NFORMA ATION (Continued)) Layout Con nsiderations s Follow the below b guidelines for PCB B layout to acchieve stable e operation. Take T below ffigure for refe erence. 1. Keep th he high curre ent paths (VIN N, VOUT and d GND) wide e and short to o obtain the best effect. 2. The inp put and outpu ut capacitorss should be close c to the device d as po ossible to min nimize the pa arasitic trace e inductances. Fig.18 Reference e layout 9 Advanc A ced Pow wer E Electron nics Co orp. AP PE8988 MARKIN NG INFORMATION SOT-26 Part Number : HP HP PSS e Code Date SS:2 2004, 2008, 20 012… SS:2 2003, 2007, 20 011... SS:2 2002, 2006, 20 010… SS:2 2001, 2005, 20 009... 100