H8118A33PR

H8118 Synchronous Step-Up DCDC Converter with PFM Control Features  External parts:Coil, capacitor  Accuracy of ±2%  Output voltage: Settable to between  High efficiency :95% 2.1V to 5.5V in 0.1V steps  Package: SOT23-5 and SOT89  Maximum Oscillation frequency :300KHz Applications  Digital cameras  Cameras , video equipment  Electronic notebooks and PDAS  Communications equipment  Portable CD/MD players  Power supply for microcomputers General Description an external coil, capacitor. The built-in DC/DC Converter with PFM Control. MOSFET is turned off by a protection circuit With the H8118 Series, a step-up switching when the voltage at the LX pin exceeds the DC/DC converter can be configured by using limit to prevent it from being damaged. IN The H8118 Series is a Synchronous step-up SI PR O Block Diagram Order Information H8118①②③④⑤ Designator Ver1.5 Symbol Description ① A ②③ Integer ④ P ⑤ M5 R Package:SOT23-5 RoHS / Pb Free G Halogen Free Standard Output Voltage(2.1V~5.5V) e.g:3.3V=②：3；③：3 Package:SOT89 1 Shanghai Siproin Microelectronics Co. H8118 Synchronous Step-Up DCDC Converter with PFM Control Pin Assignment Table1 H8118A series (SOT23-5 PKG) 4 5 PIN NO. PIN NAME FUNCTION 1 EN Shutdown pin “H”: Normal operation “L”: Step-up stopped 1 2 3 SOT23-5(Top View) 2 VOUT Output voltage pin 3 NC (N.C.) 4 GND GND pin 5 LX External inductor connection pin IN Table2 H8118A series (SOT89 PKG) PIN NO. PIN NAME FUNCTION 1 GND GND pin VOUT Output voltage pin 1 PR O 2 2 3 3 LX External inductor connection pin SOT89(Top View) Absolute Maximum Ratings (Unless otherwise specified, Ta=25℃) SYMBOL RATINGS UNITS VOUT Pin Voltage VOUT VSS-0.3~VSS+8 V EN Pin Voltage EN VSS-0.3~VSS+8 V LX Pin Voltage VLX VSS-0.3~VSS+8 V LX Pin Current ILX 1000 mA 250 mW 500 mW SI PARAMETER Power SOT23-5 Dissipation SOT-89-3 PD Operating Temperature TOPR -40~+85 ℃ Storage Temperature TSTG -40~+125 ℃ Soldering Temperature & Time TSOLDER 260℃，10s Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maximum Ratings” may cause substantial damage to the device. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability. Ver1.5 2 Shanghai Siproin Microelectronics Co. H8118 Synchronous Step-Up DCDC Converter with PFM Control Electrical Characteristics (Unless otherwise specified，Ta = 25℃) PARAMETER SYMBOL Output Voltage VOUT Input Voltage VIN - - Operation Start Voltage VST1 - Operation Start Voltage VST1 Input Current At No Current Consumption During Shutdown Maximum Oscillation CONDITION V - 7.5 V - - 0.9 V IOUT=1mA, VOUT =2.2V~4.2V - - 1.2 V IOUT=1mA, VOUT =4.2V~5.5V - 15 25 uA VIN=1.8V, VOUT=3.0V - 25 35 uA VIN=0.9V, VOUT=3.0V ISS2 - 6 10 uA VOUT=VOUT(s)+0.5V ISSS - ×0.98 VOUT VOUT(S) ×1.02 - 300 Duty1 70 78 EFF1 uA KHz PR O fosc 1.0 85 90 % VSH 0.75 - - V VSL1 - - 0.3 V Shutdown Pin Input Voltage VEN=0V VOUT=0.95xVOUT(s), measure Waveform at LX pin VOUT=0.95xVOUT(s) % SI Efficiency UNITS VOUT(S) MAX IN Current Consumption 2 Duty Ratio1 TYP ISS Load Frequency MIN VOUT=0.95xVOUT(s), judge Oscillation at LX pin VOUT=0.95xVOUT(s), judge stop at LX pin Shutdown Pin input ISH -0.1 - 0.1 uA VEN=6V Current ISL -0.1 - 0.1 uA VEN=0V Remark: VOUT(S) specified above is the set output voltage value,and VOUT is the typical value of the actual output voltage Application Circuits 1) H8118A without CE Ver1.5 3 Shanghai Siproin Microelectronics Co. H8118 Synchronous Step-Up DCDC Converter with PFM Control 2) H8118A with CE 1) L=47uH(Sumida) 2) CF=47uF/16V(Tantalum) IN Note:External Component Recommendation: PR O TYPICAL PERFORMANCE CHARACTERISTICS SI (Cin=Cout=100uF,L=47uH) Ver1.5 4 Shanghai Siproin Microelectronics Co. H8118 Synchronous Step-Up DCDC Converter with PFM Control Package Information SI PR O IN 5-pin SOT23-5L Outline Dimensions Ver1.5 5 Shanghai Siproin Microelectronics Co. H8118 Synchronous Step-Up DCDC Converter with PFM Control SI PR O IN 3-pin SOT89-3 Outline Dimensions Ver1.5 6 Shanghai Siproin Microelectronics Co.