KB2301 KINGBOR | Alldatasheet
Document overview
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Technical content
Features
y400KHz Maximum Operation Frequency y2.0V to 5.0V Output Voltage With 0.1V Step yLow Start-up Voltage: 0.8V at 1mA y2% Output Voltage Accuracy yUp to 88% Efficiency yOutput current: 300mA at 2.5V input, 3.3V output yLow Ripple and Low Noise yOutput Current Extendable by External Switch
Applications
yPower source for applications where a higher voltage than the battery voltage is required yOne to three cell battery devices yPower source for cameras, camcorders, VCRs, PDAs, pagers and hand held communication instrument Typical Applications 9,1 /; 9287 *1' 9287 9,1 (;7 9287 *1' 9287 =7; KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 KB
3)0 FRQWURO 26& .+] EXIIHU (UURU &XUUHQW OLPLWLQJFRPSDUDWRU $PSOLILHU 9287 (;7 &KLS (QDEOH *1' Pin Assignment Part Marking and Package Type Pin Name kB2301 LXXT SOT-23-3 kB2301 LXXF SOT-23-5 kB2301 LXXE SOT-89 kB2301 EXXT SOT-23-3 kB2301 EXXF SOT-23-5 kB2301 EXXE SOT-89
Description
LX 2 5 3 - - - Switching pin EXT - - - 2 5 3 Buffer output for external transistor VOUT 3 2 2 3 2 2 Output voltage EN - 1 - - 1 - Chip enable (active high) GND 1 4 1 1 4 1 Ground FB - 3 - - 3 - 5V only 627 *1' 9287 /; 627 *1' 9287 (;7 /; *1' 9287(1 627 (;7 *1' 9287(1 627 627 *1' 9287 627 *1' 9287 (;7 kB2301LXXT kB2301LXXF kB2301LXXE kB2301EXXT kB2301EXXF kB2301EXXE KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052 2.15V FB(5V only) FB(5V only) FB(5V only)
s Type Symbol Description Value Unit Vmax Maximum voltage on VOUT and VLX pins 8 V Voltage Vmin-max V oltage range on EXT and EN pins -0.3-VOUT+0.3 V ILXmax Maximum current on LX pin 1000 mA Current IEXTmax Maximum current on EXT pin 100 mA Psot-23-3 Maximum Power dissipation for SOT-23-3 package 0.25 W Psot-23-5 Maximum Power dissipation for SOT-23-5 package 0.25 W Power dissipation Psot-89 Maximum Power dissipation for SOT-89 package 0.5 W Tmin-max Operation temperature range -20-85 o C Thermal Tstorage Storage temperature range -40-165 o C ESD VESD ESD voltage for human body mode 2000 V Electronic Characteristics Parameter Symbol Test Condition Min Typ Max Unit Output voltage accuracy ƸVOUT -2 2 % Maximum input voltage VIN MAX
0.7 VOUT V
ILOAD=1mA, VIN:0ė2V 0.85 V Hold-on voltage V HOLD ILOAD=1mA, VIN:2ė0V 0.6 V Maximum oscillation frequency F MAX 350 400 450 KHz Oscillator duty cycle DC OSC 75 80 85 % Efficiency ¨ 85 88 % Current limit , /,0,7 600 800 1000 mA VIN=1.8V VOUT=3.0V 20 uA Input current at no load ,,1 VIN=1.8V VOUT=5.0V uA VOUT pin current at switch off ,287 Drive VOUT pin with voltage VOUT+0.5V 68 u A Input standby current ,,14 No load, EN=“low” 1 uA KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
EN “High” voltage level 0.4 VOUT V EN “low” level 0.2 V EN “high” input current 0.1 uA EN “low” input current -0.1 uA EXT output current -5 5 mA KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Typical Characteristics (Using Internal Switch Transistor) Start-up/Hold-on vs. Output Current Output Current(mA) 6WDUWXS+ROGRQ9ROWDJH 6WDUWXS +ROGRQ L=47uH C=47uF Output Voltage vs. Output Current Output Current (mA) 2XWSXW9ROWDJH 9 9 L=47uH C=47uF VOUT=3.4V KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Efficiency vs. Output Current Output Current(mA) (IILFLHQF\\ L=47uH C=47uF VOUT=3.4V 9 9 Output Current vs. Ripple Voltage Output Current (mA) 5LSSOH9ROWDJH L=47uH C=47uF VOUT=3.4V KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Output Current vs. Ripple Voltage Output Current (mA) 5LSSOH9ROWDJH L=47uH C=2*47uF VOUT=3.4V 9 9 Output Current vs. Ripple Voltage Output Current (mA) 5LSSOH9ROWDJH L=47uH C=3*47uF VOUT=3.4V KB2301 Kingbor Technology Co.,Ltd TEL:(86)0755-26508846 FAX:(86)0755-26509052
Package Information
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