ME2188A25M3G

ME2188 High Efficiency, synchronous PFM step-up DC-DC converter General Description Features ME2188 Series is a PFM Step-up DC/DC converter  High efficiency：93% IC with low supply current by CMOS process. High  Maximum frequency：320KHz frequency noise that occurs during switching is reduced  Low Quiescent Current：7.5μA by using advanced circuit designed, output voltage is  Input Voltage: 0.9V ~ 5.0V programmable in 0.1V steps between 1.9V~5.0V and  Output Voltage Range:1.9V ~ 5.0V maximum frequency is 320KHz(TYP.). A low ripple, high  High Accuracy: ± 2% efficiency step-up DC/DC converter can be constructed  Low ripple and Low noise of ME2188 with only two external components. ME2188 is suitable for use with battery-powered instruments with low noise and low supply current. Typical Application Package  Power source for battery-powered equipment  5-pin SOT23-5  Power source for Wireless mouse, toys, Cameras,  3-pin SOT23、SOT23-3、SOT89-3、TO92 VCRs, PDAs, MP3, and Led lighting etc Typical Application Circuit L 22uH VOUT LX VIN V11 CIN 10uF CE ME2188 GND www.microne.com.cn VOUT COUT 100uF RL Page 1 of 13 ME2188 Selection Guide ME 21 88 X X X G Environment mark Package M3:SOT23-3 M5:SOT23-5 X：SOT23 P：SOT89-3 T：TO92 Output Voltage 30：3.0V 33：3.3V …… Function A：Without CE C：Have CE Product Type Product Series Microne product series product description ME2188A22M3G VOUT =2.2V，Without CE pin，Package：SOT23-3 ME2188A22TG VOUT =2.2V，Without CE pin， Package ：TO-92 ME2188A22XG VOUT =2.2V，Without CE pin， Package ：SOT23 ME2188A24TG VOUT =2.4V，Without CE pin， Package ：TO-92 ME2188A33M3G VOUT =3.3V，Without CE pin，Package：SOT23-3 ME2188A33XG VOUT =3.3V，Without CE pin， Package ：SOT23 ME2188A33PG VOUT =3.3V，Without CE pin， Package ：SOT89-3 ME2188A33TG VOUT =3.3V，Without CE pin， Package ：TO-92 ME2188C33M5G VOUT =3.3V，Have CE pin， Package ：SOT23-5 NOTE: At present ,there are thirteen kinds of voltage value: 2.2V、2.3V、2.4V、2.5V、2.7V、2.8V、3.0V、 3.3V、3.6V、3.7V、4.0、4.5V、5.0V。 If you need other voltage and package, please contact our sales staff。 V11 www.microne.com.cn Page 2 of 13 ME2188 Pin Configuration& Pin Assignment VOUT VOUT 3 3 1 2 1 LX GND 1 2 3 5 4 1 2 3 2 1 GND LX SOT23 GND CE VOUT NC LX SOT23-3 2 3 GND VOUT LX GND VOUT LX SOT89-3 TO92 SOT23-5 Pin Assignment PIN Number Pin Name Description 3 LX Switch pin 2 2 VOUT Voltage output 1 - - CE Chip enable 1 4 1 1 GND Ground - 3 - - NC NC SOT23/ SOT23-3 SOT23-5 SOT89-3 TO92 2 5 3 3 2 - Block Diagram V11 www.microne.com.cn Page 3 of 13 ME2188 Absolute Maximum Ratings Parameter Symbol Ratings Units CE pin input voltage VCE -0.3~6 V LX pin voltage LX -0.3~6 V LX pin current ILXmax 1000 mA VOUT pin voltage VOUT -0.3~6 V SOT23-3 0.54 SOT23-5 0.6 SOT89-3 Continuous Total Power Dissipation 1.25 TO92 0.83 SOT23 0.38 SOT23-3 230 SOT23-5 210 SOT89-3 Thermal resistance(Junction to air) PD θJA W ℃/W 100 TO92 150 SOT23 330 Operating Ambient Temperature Range TOPR -40~85 ℃ Storage Temperature Range TSTG -55~150 ℃ Maximum junction temperature TJ -40~150 ℃ Welding temperature TL 260 ℃ Electrical Characteristics TA = 25 ºC, VIN =VEN=2V, VOUT=3.3V,L=22uH,CIN=10uF，COUT=100uF, unless otherwise noted. Symbol Parameter Start voltage Vstart Hold voltage Vhold Maximum input voltage Vinmax 0.9 5 V Output voltage accuracy Vout -2 +2 % Power adjustment ΔVout1 VIN=Vout×0.4~×0.6,IOUT=10mA 5 20 mV Load adjustment ΔVout2 IOUT=0~100mA,VIN=2V 20 30 mV Quiescent Current ISS VOUT=VOUT+0.5 7.5 15 uA Shutdown current ISS0 VCE=0V 0 0.5 uA Current limit Ilimit 1000 1200 mA No load input current Iin0 10 15 uA Efficiency 93 96 % oscillation frequency 320 KHz 74 % 0.7 V Oscillation signal duty cycle Test Conditions MIN TYP MAX UNIT ILOAD=1mA, VIN:0→2V 0.7 0.9 1.1 V ILOAD=1mA, VIN:2→0V 0.5 800 VIN=1.5V ,VOUT=2.2V DCosc EN input high level EN input low level V11 V 0.2 www.microne.com.cn Page 4 of 13 V ME2188 Type Characteristics L=22uH,CIN=10uF，COUT=100uF， TA = 25 ºC, unless otherwise noted.  ME2188A33 V11 www.microne.com.cn Page 5 of 13 ME2188  ME2188A22 V11 www.microne.com.cn Page 6 of 13 ME2188 Operation Description ME2188 step-up DC/DC converter charges energy in the inductor when Lx Transistor is on, and discharges the energy with the addition of the energy from input power source thereto, so that a higher output voltage than the input voltage is obtained. Following is the operation diagram. Switching DC/DC Step up Converter operating process PCB Layout： Set external components as close as possible to the IC and minimize the connection between the components and the IC. In particular, when an external component is connected to VOUT Pin, make minimum connection with the capacitor. Make Vss pin sufficient grounding, otherwise, the zero level within IC will varied with the switching current. This may result in unstable operation of IC. V11 www.microne.com.cn Page 7 of 13 ME2188 Packaging Information  Package Type:SOT23-3 Millimeters DIM Inches Min Max Min Max A 1.05 1.45 0.0413 0.0571 A1 0 0.15 0.0000 0.0059 A2 0.9 1.3 0.0354 0.0512 A3 0.6 0.7 0.0236 0.0276 b 0.25 0.5 0.0098 0.0197 c 0.1 0.25 0.0039 0.0098 D 2.8 3.1 0.1102 0.1220 E 2.6 3.1 0.1023 0.1220 E1 1.5 1.8 0.0591 0.0709 e 0.95(TYP) L 0.25 L1 0.0374(TYP) 0.6 0.0098 0.59(TYP) θ 0 c1 0.0232(TYP) 8° 0.2(TYP) V11 0.0236 0.0000 8° 0.0079(TYP) www.microne.com.cn Page 8 of 13 ME2188  Package Type:SOT23-5 Millimeters DIM Inches Min Max Min Max A 1.05 1.45 0.0413 0.0571 A1 0 0.15 0.0000 0.0059 A2 0.9 1.3 0.0354 0.0512 A3 0.6 0.7 0.0236 0.0276 b 0.25 0.5 0.0098 0.0197 c 0.1 0.23 0.0039 0.0091 D 2.82 3.05 0.1110 0.1201 e1 1.9(TYP) 0.0748(TYP) E 2.6 3.05 0.1024 0.1201 E1 1.5 1.75 0.0512 0.0689 e 0.95(TYP) L 0.25 L1 0.0374(TYP) 0.6 0.0098 0.59(TYP) θ 0 c1 0.0232(TYP) 8° 0.2(TYP) V11 0.0236 0.0000 8° 0.0079(TYP) www.microne.com.cn Page 9 of 13 ME2188  Package Type:SOT89-3 Millimeters DIM Inches Min Max Min Max A 1.4 1.6 0.0551 0.0630 b 0.32 0.52 0.0126 0.0205 b1 0.4 0.58 0.0157 0.0228 c 0.35 0.45 0.0138 0.0177 D 4.4 4.6 0.1732 0.1811 D1 1.55(TYP) 0.061(TYP) D2 1.75(TYP) 0.0689(TYP) e1 3.0(TYP) 0.1181(TYP) E 2.3 2.6 0.0906 0.1023 E1 3.94 4.4 0.1551 0.1732 E2 1.9(TYP) 0.0748(TYP) e 1.5(TYP) 0.0591(TYP) L 0.8 θ 1.2 45° V11 0.0315 0.0472 45° www.microne.com.cn Page 10 of 13 ME2188  Package Type:SOT23 Millimeters DIM Inches Min Max Min Max A 0.9 1.15 0.0354 0.0453 A1 0 0.14 0.0000 0.0055 A2 0.9 1.05 0.0354 0.0413 b 0.28 0.52 0.0110 0.0205 c 0.07 0.23 0.0028 0.0091 D 2.8 3.0 0.1102 0.1181 e1 1.8 2.0 0.0709 0.0787 E 1.2 1.4 0.0472 0.0551 E1 2.2 2.6 0.0866 0.1024 e 0.95(TYP) 0.0374(TYP) L 0.55(TYP) 0.0217(TYP) L1 0.25 0.55 0.0098 0.0217 θ 0 8° 0.0000 8° c1 0.25(TYP) V11 0.0098(TYP) www.microne.com.cn Page 11 of 13 ME2188  Package Type:TO-92 Millimeters DIM Inches Min Max Min Max A 3.3 3.7 0.1299 0.1457 A1 1.1 1.4 0.0433 0.0551 b 0.38 0.55 0.015 0.0217 c 0.36 0.51 0.0142 0.0201 D 4.3 4.7 0.1693 0.185 D1 3.43 一 0.135 一 E 4.3 4.7 0.1693 0.185 e 1.27TYP 0.05TYP e1 2.44 2.64 0.0961 0.1039 L 14.1 14.5 0.5551 0.5709 h 0 0.38 0 0.015 Φ 一 1.6 一 0.063 V11 www.microne.com.cn Page 12 of 13 ME2188  The contents of this document will be updated with the product's improvement without prior notice. Please consult our sales staff before using this document to ensure that you are using  The application circuit examples described in this document are only used to indicate the representative use of the product an  Please use this product within the limits stated in this document. We will not be responsible for  The products described in this document are not allowed to be used in equipment or devices that affect the human body without the written permission of our company, including but not limited to: health equipment, medical equipment, disaster prevention equipment, fuel control equipment, automobile equipment, aviation equipme  Although our company has always been committed to improving product quality and reliability, semiconductor products have a certain probability of malfunction or wrong work. To prevent personal injury or property damage caused by such accidents, please pay full attention to safety design, for example: Alternate design, fire protection design, and prevention of wrong  When exporting this product or this document overseas, you should abide by applicable import and exp  Copying or reprinting part or all of this document in any form without the permission of our company is strictly prohibited. V11 www.microne.com.cn Page 13 of 13