Company Profile. Union Semiconductor.

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2 Company Profile Who We Are Founded in 00, is a fabless integrated circuit design company, engaged in inventing, designing and marketing high performance linear and mixed-signal integrated circuits (ICs) for use in a variety of electronic equipment. s products bridge the analog real world and digital world by detecting, measuring, amplifying, converting power supply and providing protection for electronic circuits. Corporate Mission s mission is to continuously develop high quality and innovative mixed signal IC solutions that add value to customers electronics equipment worldwide. Products and Applications Our products include power supplies, power management circuits, analog switches, interface circuits, ESD protection ICs and EMI filters. markets over 80 analog ICs for uses in a wide variety of electronic equipment. These include PCs and their peripherals, portable devices, instrumentation, test equipments and digital consumer electronics. Contact Us, Incorporated. Add: Room 606, No. 70 Shengxia Road, Zhangjiang Hi-Tech Park, Shanghai Zip Code: 00 Tel: Fax: Website:

3 Table of Contents Power Supply Linear Regulators -4 Single Channel 30mA Output Current LDOs Dual Channel 300mA Output Current LDOs Single Channel 00mA Output Current LDOs High Input Voltage LDOs Ultra Low Input Voltage LDOs Ultra Low Quiescent Current LDOs Low Output Noise LDOs Switching Regulators -7 DC-DC Buck Converters DC-DC Boost Converters LED Backlight Boost Drivers LED Lighting Buck Drivers Appendix Sales Contact 8

4 Product Selection Guide Linear Regulators (LDOs) Part Number Features (V) (Min) (V) (V) IOUT (ma) Iq _MAX (Typ) VDROP IO Note Package 0mA CMOS Linear Regulator with Control *UM3730 Output Auto Discharge...0V to 3.3V with 0.V Interval 0 0mA DFN4.0.0 SOT33 300mA/30mA CMOS Linear Regulators without Control UM6xx Ultra Low Dropout, Input Under Voltage Lockout. 6.0 UM36xx Standard Low Dropout. 6.0 UM60 30mA, Ultra Low Dropout, Input Under Voltage Lockout mA/30mA CMOS Linear Regulators with Control././.8/./.7/.8/3.0/3.3 Note.V to.0v with 0.V Interval Fixed.0V to 4.0V with 0.V Interval mA SOT mA SOT3-3 SOT mA SOT3-3 UM7xx UM37xx *UM8xx UM70 Ultra Low Dropout, Control, Input Under Voltage Lockout Standard Low Dropout Control Ultra Low Dropout, Control, Input Under Voltage Lockout, Reverse Current Protection 30mA, Ultra Low Dropout, Input Under Voltage Lockout, Excellent Load Transient /3.3 Note mA.V to.0v with mA 0.V Interval SOT33././.8/./.7/ mA.8/3.0/3.3 Note Fixed.0V to 4.0V with 0.V Interval, or mA SOT89- Adjustable Output from.0v to.0v 00mA CMOS Linear Regulator UM770 00mA Output Current, Ultra Low Dropout, Input Under Voltage Lockout. 6.0 Fixed.0V to 4.0V with 0.V Interval, or Adjustable Output from.0v to.0v mA SOT89- Dual Channel 300mA CMOS Linear Regulator UM470 Dual Channel Separate Control...//./.8/./.7/.8/3.0/3.3 Note mA SOT3-6 DFN High Input Voltage Linear Regulators UM4xx V Input Voltage..0.V to.0v with 0.V Interval mA SOT3-3 SOT89-3 UM430 8V Input Voltage V to 6.0V with 0.V Interval mA SOT3-3, SOT89-3 UM440 8V Input Voltage with Control V to 6.0V with 0.V Interval mA SOT89- Ultra Low Quiescent Current Linear Regulators UM3xx Ultra Low Iq...//./.8/./.8/ 3.0/3.3/3. Note 3.V mA SOT3-3, SOT89-3 DFN4.8. UM4xx Ultra Low Iq with Control...//./.8/./.8/ 3.0/3.3/3. Note 3.V mA, SOT89- *UM0 Wide Input Voltage Range, Ultra Low Iq V to.0v with 0.V Interval mA SOT3-3, SOT89-3 Ultra Low Input Voltage Linear Regulator *UM30.4V Input Voltage V to 3.6V with 0.V Interval mA, >3.0V DFN4.0.0, SOT33 Low Output Noise Linear Regulator UM330 0mA Output Current, 40μVrms Low Noise.7..V to 3.3V with 0.V Interval 0 4 0mA SOT33 Note: Besides the standard output voltages listed in the table, customized output Voltage is also available from.v to.0v at step of 00mV. Contact factory for product availability. Note: Dropout voltage is defined for Vo.V device only. *: Future product. Contact factory for availability information.

5 Quiescent Current (ua) Quiescent Current (ua) Product Selection Guide Linear Regulators Ultra Low Quiescent Current Linear Regulator UM3xx/UM4xx Ultra Low Iq: V IN=3V Operating Voltage Range:.V to.v Dropout Voltage: 00mV Iload=0mA, V OUT>3.0V Output Voltage:.3V to.0v 00mA Guaranteed Output V IN 3V 00mA Guaranteed Output V IN 3.V Fast Transient Response With Enable Control (UM4xx) Applications Battery-Powered Systems Reference Voltage Sources Cameras, Video Cameras Portable AV Systems Portable Games Cellular Phones Benefits Very Low Operating Voltage:.V Ultra Low Iq Over All Operating Voltage Range: <3μA Quiescent Current vs Input Voltage Quiescent Current vs Input Voltage UM3S Input Voltage (V) Quiescent Current vs Ambient Temperature Quiescent Current vs Temperature.6 UM333S =4.3V Temperature ( ) 4 3 UM3xxS UM3xxY UM3xxS, SOT3-3 UM3xxY, SOT89-3 UM3xxDA, DFN UM4xxS, UM4xxY, SOT89- UM4xxDA, UM3xx/UM4xx Pin Configurations 300mA, Micropower, Dual Channel VLDO Linear Regulator UM470S/UM470DA/UM470DB Very Low Dropout: 00mA Operating Voltage Range:.V to.v Low Noise: 00μV RMS (0Hz to 00kHz) Dual LDO Outputs (300mA/300mA) Output Current Limit Stable with μf Output Capacitor Thermal Overload Protection Low Profile SOT3-6, 6-Lead DFN.0.0 and 8-Lead DFN Packages Applications Bluetooth/80. Cards PDAs and Notebook Computers Portable Instruments and Battery-Powered Systems Cellular Phones Benefits Low Profile Packages Separated Enable Control Available Multiple Output Voltage Combination The UM470 series are dual channel very low dropout (VLDO) linear regulators with separated enable control. The range of output voltage is from.v to.0v while operated from.v to.v input. Typical output noise is only 00μV RMS and maximum dropout is just 00mV at the load current of 00mA. Naming Rule UM470 Available Voltage Version Code Voltage Code Voltage Code Voltage Code Voltage A F 4. L 3.3 R.8 B 4.8 G 4 M 3 S. C 4.7 H 3.8 N.8 T.3 D 4. J 3.6 P.7 U. E 4.3 K 3. Q. SOT3-6 DFN Channel Output Voltage Channel Output Voltage Package Type S: SOT3-6 DA: DB: DFN UM470 Pin Configurations

6 Quisecent Cuerrent (ua) Product Selection Guide Linear Regulators 8V, 30mA, Low Consumption Linear Regulator UM430/UM440 Input Voltage Range: 3.6V to 8V Output Voltage:.0V to 6.0V with 00mV Interval 30mA Guaranteed Output Current Low Quiescent Current: 4.8μA (Typ) at 8V Input Low Dropout Voltage: 00mV (Typ) at 30mA With Enable Control (UM440S/UM440Y) Quiescent Current vs Input Voltage Input Voltage (V) UM430S UM430S-xx, SOT3-3 3 UM440S-xx, UM430Y 4 UM430Y-xx, SOT UM440Y-xx, UM430B SOT89- UM430B-xx, SOT89-3 UM430/UM440 Pin Configurations 3 4 UM430S-xx, 30mA, Micropower, Low Dropout Linear Regulator UM60/UM70 Input Voltage Range:.V to 6.0V 30mA Guaranteed Output Current Fixed Output Voltage of UM60 and UM70 from.0v to 4.0V with 0.V Interval Adjustable Output Voltage of UM70:.0V to.0v ±% Voltage Accuracy at V OUT>.V ±30mV Voltage Accuracy at V OUT.V Low Dropout Voltage: 0mV at 0mA f=00hz Excellent Load Transient Response Low Quiescent Current: 90μA (Typ) OUT Fixed Output, UM60S-xx, SOT3-3 IN 3 IN SHDN 3 OUT IN 4 SHDN 3 Fixed Output, Adjustable Output, UM70S-xx, UM70S-00, FB OUT SHDN 3 4 SHDN 3 4 IN Fixed Output, Adjustable Output, UM70Y-xx, UM70Y-00, SOT89- SOT89- OUT 4 FB SHDN SHDN FB IN OUT Fixed Output, UM70DA-xx, Adjustable Output, UM70DA-00, UM60/UM70 Pin Configurations 3

7 Product Selection Guide Linear Regulators 00mA, Micropower, Ultra Low Vdrop Linear Regulator UM770 Very Low Dropout: 40mV at 00mA Low Enable Threshold Voltage Maximum Input Voltage: 6.0V Fixed Output Voltage:.0V to 4.0V with 0.V Interval Adjustable Output Voltage:.0V to.0v ±.0% Voltage Accuracy at 00mA Under Voltage Lockout Output Current Limit Short-Circuit and Thermal Overload Protection SHDN SHDN 3 4 Fixed Output, UM770Y-xx, SOT89- FB SHDN SHDN 3 4 Adjustable Output, UM770Y-00, SOT89- FB Fixed Output, UM770DA-xx, Adjustable Output, UM770DA-00, UM770 Pin Configurations 0mA, Micropower, Low Dropout Linear Regulator UM3730 Input Voltage Range:.V to.v 0mA Guaranteed Output Current ±% Voltage Accuracy at 0mA Low Dropout Voltage: mv (Typ) at 0mA Low Enable Threshold Voltage Low Quiescent Current: 0μA Available Fixed Output Voltage:.0V to 3.3V with 0.V Interval Output Auto Discharge 4 3 UM3730DA, DFN4.0.0 (Top View) UM3730P, SOT33 UM3730 Pin Configurations 4

8 Product Selection Guide Switching Regulators DC/DC Buck Converters Part Number Description (V) (V) Iout (ma) Frequency (MHz) (Typ) Peak Efficiency Package Sync Low Voltage Buck Converters ( 6V) UM300 Current Mode PWM Buck.~. 0.6~ % UM30 Current Mode PWM Buck with Light Load Mode.~. 0.6~ % UM30DA Current Mode PWM Buck with Light Load Mode.~. 0.6~ % UM30 Current Mode PWM Buck.~. 0.6~ % * * DFN8.0.0 *UM340 Current Mode PWM Buck with SOP8.7~ ~ % Light Load Mode DFN High Input Voltage High Output Current Buck Converters ( 6V, IOUT A) *UM43 Current Mode PWM Buck with Light Load Mode.~.0 0.6~ ~. (Adjustable) 9% QFN *UM48 Current Mode PWM Buck 4.7~ ~ SOP8 DC/DC Boost Converters Part Number Description (V) (V) (ma) ILIMIT Frequency (MHz) Peak Package (Typ) Efficiency *UM349 Voltage Mode PWM Boost with Light Load Mode 0.9~4.4.~ % SOT3-6 UM660 Constant Voltage PFM.0~6.0.0~ % Boost Converter UM66 Constant Voltage PFM.0~6.0.0~ % Boost Converter DFN LED Backlight Boost Drivers Part Number Description (V) (V) ILIMIT (ma) Frequency (MHz) Peak Efficiency Package UM66 *UM66S *UM663 Constant Current PFM Boost Converter with Over Voltage Protection Constant Voltage PFM Boost Converter Constant Current PWM Boost Converter.0~ % SOT3-6.0~ %.7~ % DFN8.0.0 LED Lighting Buck Drivers Part Number Description (V) Vsense (mv) (Typ) ILIMIT (ma) (Min). Frequency (MHz) Peak Efficiency Package UM30 UM3S UM3Y UM360S UM360Y UM36S *UM370S 30V Input 30mA Step-Down Current Mode LED Driver 3V Input 700mA Step-Down Current Mode LED Driver 3V Input 700mA Step-Down Current Mode LED Driver 3V, A Step-Down Current Mode LED Driver, with Frequency Jitter 3V, A Step-Down Current Mode LED Driver, with Frequency Jitter 40V Input A Step-Down Current Mode LED Driver 40V Input.A Step-Down Current Mode LED Driver 7~ >90% 6~ >90% 6~ >90% SOT89-6~ >90% 6~ >90% SOT89-6~ >90% 6~ >90% *: Future product, contact factory.

9 Product Selection Guide Switching Regulators 30V, 30mA LED Lighting Driver UM30 Internal 30V NDMOS Switch 30mA Output Current Wide Input Voltage Range: 6V to 30V ±% LED Current Accuracy High Efficiency (up to 9%) Analog or PWM Dimming Control 40V Transient Capability Inherent Open-Circuit LED Protection Output Shutdown Control Up to MHz Switching Frequency Pb-Free Package Applications MR6 and General Lighting Automotive Lighting Low Voltage Industrial Lighting Illuminated Signs Benefits DC Voltage or PWM Dimming High Efficiency (up to 9%) Inherent Open-Circuit LED Protection The UM30 is capable of driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. This step-down converter provides an externally adjustable output current of up to 30mA from an input supply between 6V and 30V. It can even reach 8 watts of output power, depending on supply voltage and external components. The UM30 is available in a low profile package. (up to 30V) C µf Floating ADJ D UM30 Rs 0.33ohm ISSE LX Typical Application Circuit LX 3 ADJ ISSE UM30 Pin Configuration 4 L 00µH 3V, A LED Lighting Driver UM360S/UM360Y Integrated 3V 0.4Ω NDMOS A Output Current Wide Input Voltage Range: 6V to 3V ±% LED Current Accuracy Up to 9% Efficiency Adjustable Constant LED Current Analog or PWM Dimming Control Improved EMI through Frequency Jitter Over Temperature and Open-Circuit LED Protection Up to MHz Switching Frequency Pb-Free and SOT89- Packages The UM360 is a PWM step-down converter with internal power switch, designed for driving single or multiple series connected LEDs efficiently from a voltage source higher than the LED voltage. The device operates from an input supply between 6V and 3V and employs hysteretic control with a high side current sense resistor to set the constant output current up to A. (up to 3V) Ci 0µF Floating VSET D Rs 0.ohm UM360 ISSE LX L 00µH Applications Low Voltage Industrial Lighting Illuminated Signs DC/DC or AC/DC LED Driver Application General Purpose, Constant Current Source Benefits DC Voltage or PWM Dimming Inherent Open-Circuit LED Protection 3 VSET ISSE LX 4 Typical Application Circuit LX VSET 3 4 ISSE UM360S UM360Y SOT89- UM360 Pin Configurations 6

10 Efficiency (%) Product Selection Guide Switching Regulators 600mA,.MHz, Synchronous Step-Down DC-DC Converter UM30/UM30DA High Efficiency: up to 90%.V to.v Input Voltage Range 600mA Output Current.MHz Constant Switching Frequency Integrated Main Switch and Synchronous Rectifier Pulse Skipping Mode Operation at Light Load Condition Low Quiescent Current: 0µA <µa Shutdown Current Lead Free (UM30) and DFN6.0.0 (UM30DA) Packages Benefits Pulse Skipping Mode Improves Efficiency at Light Load Operation Synchronous Rectifier, No External Schottky Diode Required Ultra Low Shutdown Current UM30 is a high-efficiency pulse-width-modulated (PWM) step-down Efficiency vs. Load Current (=.8V) 00 DC-DC converter, capable of delivering 600mA output current over a wide input 90 voltage range from.v to.v. The UM30 automatically turns off the 80 synchronous rectifier while the inductor current is low and enters discontinuous 70 PWM mode. This can increase efficiency at light load condition Pulse Skipping Mode improves efficiency =.V =3.6V =4.V =.V at light load operation Output Current (ma).v~.v C 4.7uF UM30 UM30DA SW FB L.uH R 634K R 36K =.8V C 0uF UM30/UM30DA Typical Application Circuit 8V Low Power DC/DC Boost Converter UM660S/UM660DA.0V to 6.0V Input Voltage Range Adjustable Output Voltage up to 8V 400mA Internal Switch Current Up to MHz Switching Frequency 36μA Typical No Load Quiescent Current μa Maximum Shutdown Current Internal Soft-Start Tiny and Packages Applications LCD Bias Supply White LED Supply for LCD Backlights Digital Still Cameras PDAs, Organizers and Handheld PCs Cellular Phones Standard 3.3V/V to V Conversion The UM660 is a PFM controlled step-up DC-DC converter with a switching frequency up to MHz. The device is ideal to generate output voltage for small to medium LCD bias supplies and white LED backlight supplies from a single cell Li-ion battery. The part can also be used to generate standard 3.3V/V to V power conversions. SW =.0-6V C IN 4.7µF L 0 µ H UM660 SW FB D R R UM660 Typical Application Circuit C FF = - 8V 6 COUT µ F SW FB FB UM660S (Top View) 7 UM660DA (Top View)

11 Sales Contact Sales Office, Inc. Add: 0 Great America Pkwy, Suite 30, Santa Clara, CA 904 Tel: sales@union-ic.com (Shanghai) Ltd. Add: Room 606, No. 70 Shengxia Road, Zhangjiang Hi-Tech Park, Shanghai Tel: (86) Fax: (86) sales@union-ic.com (Shenzhen) Ltd. Add: Room 0, Anhui Building, No Shennan Road, Futian District, Shenzhen Tel: (86) / / Fax: (86) sales@union-ic.com (HK) Ltd. Add: Unit 0, No.8 Science Park West Avenue, Hong Kong Science & Technology Park, NT, Hong Kong Tel: (8)07006 Fax: (8) sales@union-ic.com, Beijing Office Tel: (86) sales@union-ic.com, Qingdao Office Tel: (86) sales@union-ic.com 8

12 Add:Unit 606,No.70 Shengxia Road,Zhangjiang Hi-Tech Park,Shanghai Zip Code:00 Tel: Fax: Website: