Zetex Products For Mobile Phones February 2007

2 Applications within Mobile Phones Display Backlighting LED/OLED/LCD Driver and Schottky Diode Battery Management Current Monitor, Transistor and Schottky Diode Tuning Interface Varactor Diodes RF Power Amplifier MOSFETs and Schottky Diode Power Management Low Drop Out Regulators GPS Antenna Detection Current Monitor Camera Flash Strobe Charger MOSFET

Battery Management

4 Cost Effective Unidirectional Gas Gauge A common mobile phone battery gas gauge uses V BATT and T BATT –VBATT changes due to many factors Q BATT, T BATT, I DSCH, I DSCH profileI DSCH > I(C) Sensing I DSCH improves accuracy ZXCT1012 Micro-power Current Monitor Provides Simple Solution –I DSCH is measured & can be used: Calculate charge remaining To protect battery To change capacity profile –Q BATT can be measured From assumption of charging level System performance and user interface greatly improved ZXCT1012 key features –3.5µA I Q –Thin small footprint packages TSOT23-5 or TDFN3x3-5 Handset battery 2.7 to 4.2V ZXCT1012 R SENSE V OUT + - Mobile phone handset

5 Typical Mobile Phone Charging Circuit Circuit demand on transistor Using Zetex PNP can eliminate need for a series connected Schottky diode for reverse blocking SOT23F, SOT23-6 or MLP packaging to meet Pd at low battery condition Low Saturation voltage to enable lower input voltage Main Battery Power Management IC External Supply Main Circuit “Smallest, high dissipation switches”

6 Transistor Package Comparison Package3L-DFN8L-DFNSOT23FF (flat) SOT23-6 Pin Out Dimensions L x W x H millimetres 2 x 2 x 13 x 2x 13 x 1.7 x 13 x 3.2 x 1.3 Power Dissipation Watts (25x25mm, 1oz)

7 SOT23F (flat) package New Package Introduction Fits on same pcb footprint as SOT23 –3mm x 2.5mm Low profile package –Max height 1mm High power dissipation –1.3W (25 x 25mm, 2 oz copper) –1.5W (50 x 50mm, 2 oz copper) –2W (50 x 50mm, 2 oz copper, t ≤ 5secs) 3mm 2.5mm 1mm

8 PNP Transistors and Schottky for Battery Charging Circuit PartV CEO V ECO ICIC ICMICM h FE V CE(sat) PDPD Package I C I I B VVAAAmVAmAW ZXT13P20DE SOT23-6 ZXT10P20DE SOT23-6 ZXTP25020CFF SOT23 flat ZXT2M L-DFN 2 x 2mm ZXTD2M832 * L-DFN 3 x 2 mm FMMT SOT23 * Dual device for phones with adaptor plus USB charging PartVRVR IFIF I FSM VFVF IRIR CapacitancetrrPDPD Package I F V R V R Typ VAAmVmVmAµAµAVpFVnsW ZLLS1OOO SOT23

Power Management

mA LDOs in SC70-5 and SOT23-5 The ZXCL range of low dropout regulators are inherently stable with tantalum and ceramic capacitor values  1µF. Low output noise (50µV RMS ) and good PSRR (56dB) is achieved without the need for additional bypass capacitors. 1.5V and 1.8V variants can be made available. FamilyZXCLMIC5213MAX8511 Output Voltage2.5, 2.6, 2.8, 3.0, 3.3, , 2.6, 2.7, 2.8, 3.0, 3.3, 3.6, , 1.8, 2.5, 2.7, 2.8, 2.85, 3.0, 3.3, 4.5 Tolerance at 100mA±2%±3%±1% Input Voltage - Max Dropout Voltage – 80mA Dropout Voltage - 80mA I Q - Max50µA180µA typ90µA Output Current - Max150mA80mA120mA I Q Shut Down - Max1µA10µA1µA Line Regulation - Max0.1%0.3%No Max Load Reg - Max m0.04%0.5%No Max PackageSC70-5, SOT23-5SC70-5

RF Power Amplifier

12 MOSFETs and Schottky for within the RF Power Amplifier PartV DS IDID I DM R DS(on) QGQG C iss PDPD Package V I 10V VAAmΩmΩVAnCpFW N-Channel MOSFET for Level Shifting ZXMN2B01F SOT23 ZXMN2A01F SOT23 P-Channel MOSFET for PA Switch ZXMP2B19FF SOT23 Flat ZXMP2B19FH SOT23 Advance Info PartVRVR IFIF I FSM VFVF IRIR CapacitancePDPD Package I F V R V R VAAmVmVmAµAµAVpFVW ZLLS1OOO SOT23

LCD Display & Backlighting

14 Key features: Programmable LED current <5µA shutdown current High efficiency: 94% Low 100mV feedback voltage for high efficiency Series, parallel and series parallel connection combinations Complementary external switches and Schottky diodes Key Existing Products: ZXLD11xx / 19xx series Designed specifically to drive white LEDs for a wide range of existing and emerging applications, Zetex LED driver solutions provide high efficiency, cost effectiveness and versatility. Zetex LED driver ICs

15 Boost converters for LCD / OLED bias These boost converters provide an adjustable bias voltage of up to 28V for LCD and OLED displays. Key features: Adjustable output voltage up to 28V Wide input voltage range: 1.6V to 5.5V (ZXLB16xx series) <1µA typical shutdown current (ZXLD16xx series) 85% efficiency (ZXLB1600) / 80% (ZXLD16xx series) PWM & analog control input (ZXLD16xx series) True shutdown with output isolated from supply (ZXLB16xx series) Key products: ZXLB16xx series (MSOP-10 Package) ZXLD16xx series (TSOT23-5 and SC70-6 Package)

16 Boost converters for LCD / OLED bias Typical Application Circuit; ZXLB1600 ZXLD1601/1615 Typical Application Circuit; ZXLD1601 Typical Application Circuit; ZXLD1615 Product Part NumberDescriptionEV Order Number ZXLB1600X10ZXLB1600 LCD & OLED Bias#ZXLB1600EV1 ZXLD1100H6ZXLD1100 LED driver board#ZXLD1100EV1 ZXLD1100H6Mobile LED Flash Unit#ZXLD1100EV2 ZXLD1615ET5ZXLD1615 LCD & OLED Bias#ZXLD1615EV1 ZXLD1937ET5ZXLD1937 LED driver boards#ZXLD1937EV1

Photo Flash

18 Photoflash charger ICs Key applications: Digital camera flash unit Film camera flash unit Rescue / safety flash strobe Key features: Dedicated photoflash charger ICs Charges 80µF to 300V in 3.5 sec from 3V supply Operates from 1.8V to 8V supply >75% flyback efficiency Idle current: only 4.5µA when cap is charged Total solution: control IC, bipolar transistor or MOSFET and Schottky diode Small MSOP8 package Key products: ZXSC44x series The ZXSC44x series have a flyback efficiency of 75%, much higher than commonly used discrete charging circuits.

19 Photoflash charger ICs – ZXSC440 Product Part NumberDescriptionEvaluation Board No.Date.Status ZXSC440X8ZXSC440 Photoflash Charger#ZXSC440EV1Nov-04Active