KB3301

KB3301 KINGBOR | Alldatasheet

Document overview

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Technical content

ƹ 90% Efficiency ƹ High Supply Capability to Deliver 5.0V 500mA with input 3.6V-4.2V ƹ 14µA Quiescent (switch-off) Supply Current ƹ 500KHz Fixed Switching Frequency ƹ Zero Shutdown Mode Supply Current ƹ Providing Flexibility for Using Internal and External Power Switches ƹ 1.0V Low Start-up Input Voltage ƹ Small SOT-26 & SOT89-5 Package iency maintains long battery lifetime. 䂓Orderin g Information Item Package Shipping SOT89-5 KB3301MR SOT-26 3000pcs/Reel&Tape KB3301PR SOT-89-5 3000pcs/Reel&Tape 䂓Packa g e Information ƹ LCD Panel ƹ DSC ƹ MP3 ƹ Wireless Equipment ƹ Portable Instrument ƹ PDA SOT89-5 SOT-26 䂓Pin Confi g urations SOT-26 SOT-89- Pin Nam e Pin Function 1 1 CE Chip enable

2 EXT Output

6 3 FB Feedback input 1.25V up to 300mA output current. The 500KHz high switching The low start-up input voltage below 0.8V makes KB3301 the 14 µA low quiescent current together with high effic- The KB3301 is available in small package SOT-26 and The KB3301 is a small, high efficiency, and low voltage step-up DC/DC converter with an Adaptive Current Mode PWM control loop, includes an error amplifier, ramp rate minimized the size of external components. Besides, over a wide range of load currents. It operates in stable waveforms without external compensation. suitable for 1 to 4 battery cells applications of providing Step-up DC/DC converter generator, comparator, switch pass element and driver in which providing a stable and high efficient operation Vin 3.3~10uH CE EXT VDD GND FB LX 100uF 100uF 1.6M/100K 1N5819 Vout 3.3V/5V 980k/33K 1uF P1 / 5 KB3301 KB3301 Note:Vin=3.6~4.2V, Vout=5.0V 500mA ( USB host application ) General Description Features

Applications

Typical Application Circuit

㽲㪈 Step-up DC-DC Converter 㽳 KB3301 㽴㽵 Control Code SOT-26 SOT-89-5 Vin 10uH 102uF 1.6M/100K 1N5819 Vout 3.3V/5V CE EXT VDD GND FB LX 100uF 100uF 106uF 980K/33K I(V DD 100 1uF I(V i n P2 / 5 KB3301 KB3301 KB3301 Function Block Diagram Marking Information Test Circuit

Ta=25㷄㷄㷄㷄䋩䋩䋩䋩 Paramenter Symbol Ratings Unit Supply Voltage Vin - 0.3V 䌾 7V V LX Pin Switch Voltage 㪭 㪣㪯 - 0.3 䌾 (VDD + 0.8V) V Other I/O Pin Voltages 㪭㫊㫊 - 0.3V 䌾 (VDD + 0.3V) V Lx Pin Switch Current 㪠 㪣㪯 2.5 A EXT Pin Driver Current 㪠 㪜㪯㪫 200 mA Package Thermal Resistance SOT-26 Pd 145 㷄/W SOT-89-5 45 㷄/W Operating Junction Temperature Tj 125 㷄 Storage Temperature Range 㪫㫊㫋㪾 - 65 ~ +150 㷄 Vin =1.5V VDD=3.3V I=0 Ta = 25ć unless otherwise s p ec Parameter Symbol Test Conditions Min Typ Max Units Start-UP Voltage V ST I L = 1mA V Operating VDD Range V DD VDD pin voltage V No Load Current I (V IN NO LOAD V IN = 1.5V, V OUT = 3.3V µA Switch-off Current I (VDD) I SWITCH OFF V IN = 6V µA Shutdown Current I (V IN OFF CE Pin = 0V, V IN = 4.5V µA Feedback Reference Voltage V REF Close Loop, VDD = 3.3V V Switching Frequency F S VDD = 3.3V KHz Maximum Duty D MAX VDD = 3.3V % LX ON Resistance VDD = 3.3V Ω Current Limit Setting I LIMIT VDD = 3.3V A EXT ON Resistance to VDD VDD = 3.3V Ω EXT ON Resistance to GND VDD = 3.3V Ω Line Regulation ƸV LINE V IN = 1.5 ~ 2.5V, I L = 1mA mV/V Load Regulation ƸV LOAD V IN = 2.5V, I L = 1 ~ 100mA mV/mA CE Pin Trip Level VDD = 3.3V V Temperature Stability for Vout T S ppm/ć Thermal Shutdown T SD ć Thermal Shutdown Hysterises ƸT SD ć * Note: The CE pin shall be tied to VDD pin and inhibit to act the ON/OFF state whenever the VDD pin voltage may reach to 5.5V or above. -- 0.80 0.85 2- - 6 . 5 -- 75 -- -- 14 -- -- 0.01 1 1.225 1.25 1.275 -- 500 -- -- 95 -- 5- - -- 0.3 -- -- 2 5- - 0.8 1.2 0.25 -- 0.4 -- 165 -- 10 -- -- 10 -- P3 / 5 KB3301 ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

䃂 High Current Application 䃂 Output Voltage Setting switching regulator (V OUT ) can be set 䃂 Feedback Loop Design ƹ Follow Equation A ƹ recommended. ƹ ƽ High Voltage Application leakage, and improper probing to FB pins. ƹ to hundreds KΩ. ƽ Multi-Output Applications 䊶䊶䊶㪘 Referring to application circuits, The selection of R1and V OUT1 = (1 + ) × 1.25V R2 based on the trade-off between quiescent current consumption and interference immunity is stated below: Higher R reduces the quiescent current (Path current Referring to application circuits, the output voltage of the =1.25V/R2), however resistors beyond 5M Ω are not Lower R gives better noise immunity, and is less sensitive to interference, layout parasitics, FB node A proper value of feed forward capacitor parallel with suspend modes, the higher values of R1and R2 are R1 can improve the noise immunity of the feedback loops, especially in an improper layout. An empirical suggestion is around 0~33pF for feedback resistors of MΩ, and 10nF~0.1µF for feedback resistors of tens For applications without standby or suspend modes, lower values of R1 and R2 are preferred. For applications concerning the current consumption in standby or feedback needed. Such "high impedance loops" are sensitive to any interference, which require careful layout and avoid any interference, e.g. probing to FB pin. CE EXTVDD GND FB LX 3.3--10uH 1uF 100uF 100uF 1N5819 Vin NMOS Vout 3.3V/5V 1.6M/100K 980k/33K CE EXTVDD GND FB LX 4.7uH 2.5A R2 C2 C1 CVDD 47uF RVDD 12V / 9V / 8V 1000mA Vin=3.1VД 6.5V Vout=12V + 1N5819 Vin=2.8V~ Д 6.5V Vout=9V NMOS CVDD=1uF RM=0.2 C3=NC R1=860K/620K/210K R2=100K/100K/39K C1=47uF C2=10uF R2=100 R1=620K C6=0.1uF CE EXTVDD GND FB LX 3.3--10uH 10uF 1uF 10uF 1N5819 Vin 3.3V/5V Vout2 +18V 10mA 100 10uF NMOS 10uF 1uF 1uF Vout1 +9V 100mA Vout3 -9V 10mA P4 / 5 KB3301 KB3301 KB3301 KB3301 Applications Application Note Vin=4.0V 6.5V Vout=8V XP161A1355PR FDN337NNMOS=

䃂 SOT-89-5 Units: mm Symbol Min Max A 1.400 1.600 b 0.360 0.520 B 2.400 2.600 b1 0.406 0.533 C -- 4.250 C1 0.800 -- D 4.400 4.600 D1 -- 1.700 e 1.400 1.600 H 0.380 0.430 䃂 SOT-26 Units: mm Symbol Min Max A 0.889 1.295 A1 -- 0.152 B 1.397 1.803 b 0.356 0.559 C 2.591 2.997 D 2.692 3.099 e 0.838 1.041 H 0.102 0.254 L 0.356 0.610 P5 / 5 1301 KB3301 PACAGE DESCRIPTION