Doc No. TA4-EA-06038 Revision. 5 AN33014UA VIN = 5 to 25 V, 1-channel DC-DC Step down Regulator integrated N-channel Power MOSFET for USB FEATURES DESCRIPTION 1-channel DC-DC Step Down Regulator Circuit that AN33014UA is 1-channel DC-DC Step down Regulator employs Voltage Mode Switching Control System integrated N-channel Power MOSFET and employs the voltage mode switching control system. Current Feedback Function compensates output voltage drop due to external USB cable loss This IC can be operated with wide input voltage range and is build in several protection functions, so this IC can Internal reference voltage is within 1.5% accuracy provide high reliability power supply system. Input Voltage Range : PVCC , VCC: 5 V ~ 25 V Since it is possible to use up to 1 MHz switching Adjustable Switching Frequency with external frequency and it is unnecessary to add external parts for Resistor : 200 kHz ~ 1 MHz High Side Switch, this IC realizes downsizing of set and Adjustable Output Voltage Range with external reducing in the number of external parts. Resistor : 1.2 V ~ 9 V For USB applications, this IC can controlled USB Standby mode consumes less than 1 A current supplied voltage level with external resistor for USB load Output over voltage protection function current monitor (Current Feedback Function), and it can provide suitable power supply system for external USB Output ground short protection function with no voltage drop due to USB cable loss. Over current protection with adjustable threshold. Maximum current is 1.5 A. Thermal Shut Down (TSD) Under voltage lockout function (UVLO) Thermal Shut Down function APPLICATIONS Adjustable soft-start function High Input Voltage Power Systems for USB such as SSOP024-P-0300F Car-Audio system ( Size : 8.1 mm X 7.8 mm, 0.65 mm pitch ), Car-Navigation system 24pin Plastic Shrink Small Outline Package (SSOP OA Equipment Type) Home Appliances etc. SIMPLIFIED APPLICATION PVIN EFFICIENCY CURVE VREG or EXT Power 100 EN BTVCC VCC 90 PVCC1/2 80 FLAG RSO 70 RSIN VREG 60 RADJ 1.0F 30k 50 BT AN33014UA 40 RT 0.1F VCC=6V 10H DC-DCOUT 130k 50m 30 VCC=12V LX VCC=25V 20 30 SS 220 22F 0.1F 100MHz 10 0.1F SGND PGND COMP FB 3300pF 0 27pF 0 300 600 900 1200 1500 Iload (mA) 7.5k 2.2nF 470pF 1.5k Condition ) 7.5k 30k Vin = 6 , 12 , 25 V, Vout = 5 V, Lo = 10 H, Co = 22 F, Frequency = 490 kHz Notes) This application circuit is an example. The operation of mass production set is not guaranteed. You should RSENSE=50m perform enough evaluation and verification on the design of mass production set. You are fully responsible for the incorporation of the above application circuit and information in the design of your equipment. Established : 2011-11-18 1 Revised : 2013-05-27 Efficiency (%)Doc No. TA4-EA-06038 Revision. 5 AN33014UA ABSOLUTE MAXIMUM RATINGS Parameter Symbol Rating Unit Notes Supply voltage Vcc 40 V *1 Operating free-air temperature T 40 to + 85 C *2 opr Operating junction temperature T 40 to + 150 C *2 j Storage temperature T 55 to + 150 C *2 stg *1 V -0.3 to (Vcc+V ) V BT REG *3 V ,V -0.3 to 10 V *1 RSIN RSO Input Voltage Range *1 V -0.3 to (Vcc+0.3) V EN *4 V ,V ,V -0.3 to 5.5 V *1 FB BTVCC SYNC V -0.3 to 5.5 V *1 FLAG Output Voltage Range *1 V 0.3 to ( Vcc + 0.3 ) V LX *4 V (Human Body Model) 2 kV HBM ESD V (Machine Model) 200 V MM Notes) Do not apply external currents and voltages to any pin not specifically mentioned. This product may sustain permanent damage if subjected to conditions higher than the above stated absolute maximum rating. This rating is the maximum rating and device operating at this range is not guaranteeable as it is higher than our stated recommended operating range. When subjected under the absolute maximum rating for a long time, the reliability of the product may be affected. Vcc is voltage for VCC, PVCC1 and PVCC2. VCC = PVCC1 = PVCC2. *1:The values under the condition not exceeding the above absolute maximum ratings and the power dissipation. *2:Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25 C. *3:( Vcc + VREG ) V must not be exceeded 40 V *4:( Vcc + 0.3 ) V must not be exceeded 40 V POWER DISSIPATION RATING PACKAGE PD ( Ta = 25 C) PD ( Ta = 85 C) Notes j-a j-C 24 Pin Plastic Shrink Small Outline Package 135.1 C / W 11.8 C / W 0.925 W 0.481 W *1 (SSOP Type) Note). For the actual usage, please refer to the PD-Ta characteristics diagram in the package specification, follow the power supply voltage, load and ambient temperature conditions to ensure that there is enough margin and the thermal design does not exceed the allowable value. *1:Glass Epoxy Substrate(4 Layers) Glass-Epoxy: 50 X 50 X 0.8t(mm) CAUTION Although this has limited built-in ESD protection circuit, but permanent damage may occur on it. Therefore, proper ESD precautions are recommended to avoid electrostatic damage to the MOS gates Established : 2011-11-18 2 Revised : 2013-05-27