WL2803E WL2803E. Descriptions. Features. Order Information. Applications. Ultra low dropout, 500mA, CMOS LDO.

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1 Ultra low dropout, 500mA, CMOS LDO Descriptions The series are ultra low dropout, Low quiescent current, high PSRR CMOS LDO. The dropout voltage is 130mV (Typ.) at 500mA load current. Using CMOS construction, the quiescent current consumed by the is typically 150uA over the entire input voltage range, making it attractive for consumer, networking applications that demand high output current. The series are available in wide output voltage range version from 1.2V to V with 0.1V step. VOUT 5 SOT-23-5L NC 4 The series offer thermal shutdown (OTP) and current limit functions, to assure the stability of chip and power system at wrong condition, and it uses trimming technique to guarantee output voltage accuracy within ±2% VIN GND EN Pin Configuration (Top View) 5 4 The regulators are available in SOT-23-5L packages. Standard products are Pb-free and Halogen-free. Features Input voltage : 2.5V~5.5V Output voltage : 1.2V, 1.8V, V Output current : 500mA (Or upon request) PSRR : 1KHz Dropout voltage : =0.5A Output noise : uv Quiescent current : 150μA Typ. WS** YYWW WS = Device code ** = Voltage code (33: V) YY = Year code WW = Week code Marking Order Information For detail information, Please refer to page 9. Applications LCD TV STB Computer, Graphic card Network communication equipments Others portable electronics devices Will Semiconductor Ltd. 1 May Rev1.6

2 Typical Application Pin Description VIN 4.7uF VOUT 4.7uF PIN Symbol Description 1 VIN Input 2 GND Ground ON EN Enable, Active High 4 NC Not connect OFF 5 VOUT Output Block Diagram VIN VOUT Current Limit V REF EN Enable Control OTP GND Will Semiconductor Ltd. 2 May Rev1.6

3 Absolute Maximum Ratings Parameter Symbol Value Unit Input voltage range -0.3~6.5 V Output voltage range -0.3~ V Power dissipation * 1 * W P D Power dissipation * 2 * W Thermal resistance * C/W R θja Thermal resistance * C/W Junction temperature T J 150 Lead temperature(10s) T L 260 Storage temperature Tstg -55 ~ 150 HBM ±8000 V ESD Ratings MM ±400 V 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. *1: Surface mounted on FR-4 Board using 1 square inch pad size, dual side, 1oz copper *2: Surface mounted on FR-4 board using minimum pad size, 1oz copper *3: Power dissipation is calculate by P D = ( - ) x Recommend Operating Ratings Parameter Symbol Value Unit Operating Supply voltage 2.5~5.5 V Operating Temperature Range Topr -40~85 Will Semiconductor Ltd. 3 May Rev1.6

4 Electronics Characteristics (Ta=25, = +1V, C IN =C OUT =4.7uF, unless otherwise noted) Output Voltage Parameter Symbol Condition Min. Typ. Max. Unit <1.5V, =2.5V, =1mA 1.5V, =1mA Dropout Voltage V DROP =*0.98, =1A mv - 30mV Current Limit I LIM =5V 0.65 A Line Regulation V LINE =V, =4.3~6.0V, =1mA * mV * 1.02 V 5 10 mv Load Regulation V Load =V, =1~500mA mv Quiescent Current I Q =V, = ua Shut-down Current I SHDN V EN = 0V ua Power Supply Ripple Rejection PSRR =(+1V) DC+0.2V P-P F=1KHz,=10mA =(+1V) DC+0.2V P-P F=10KHz, =10mA db Output noise voltage e NO 10Hz to KHz, C OUT=4.7μF µv P-P EN logic high voltage V ENH =5.5V, =1mA 1.2 V EN logic low voltage V ENL =5.5V, =0mA 0.4 V Thermal shutdown threshold T SD 165 Thermal shutdown hysteresis T SD 30 Will Semiconductor Ltd. 4 May Rev1.6

5 Output Voltage: Output Voltage: Output Voltage: Output Voltage: Quiescent Current: I Q (ua) Quiescent Current: I Q (ua) Typical characteristics (Ta=25, = +1V, C IN =C OUT =4.7uF, unless otherwise noted) =V =0mA Input Voltage: Quiescent current vs. Supply voltage =V =0mA Ambient Temperature: ( ) Quiescent current vs. Ambient temperature =600mA Input Voltage: Output voltage vs. Supply voltage =1mA Ambient Temperature: ( ) Output voltage vs. Ambient temperature =5.5V =4.2V = -40 =V Output Current: (ma) Output voltage vs. Output current =5.5V =4.2V = 25 =V Output Current: (ma) Output voltage vs. Output current Will Semiconductor Ltd. 5 May Rev1.6

6 Power Supply Ripple Rejection: PSRR (db) Power Supply Ripple Rejection: PSRR (db) Output Voltage: Dropout Voltage: V DROP (mv) =5.5V = 85 =4.2V =V Output Current: (ma) =V = 25 O C = 85 O C = -40 O C Output Current: (ma) Output voltage vs. Output current = 4.3V+0.2V P-P = V = 10mA Ripple Frequency (HZ) PSRR Dropout voltage vs. Output current = V+0.2V P-P = 1.8V = 10mA I O Ripple Frequency (HZ) PSRR Startup with EN Shutdown with EN Will Semiconductor Ltd. 6 May Rev1.6

7 Line Regulation Load Regulation Will Semiconductor Ltd. 7 May Rev1.6

8 Package outline dimensions SOT-23-5L Symbol Dimensions In Millimeters Min. Typ. Max. A A A b c D E E e (Basic) e L θ 0 o - 8 o Will Semiconductor Ltd. 8 May Rev1.6

9 ORDER INFORMATION Ordering No. Package Marking Operating Temperature Shipping 12-5/TR 1.2 SOT-23-5L WS12/YYWW -40 ~ +85 C 3000/Tape and Reel 18-5/TR 1.8 SOT-23-5L WS18/YYWW -40 ~ +85 C 3000/Tape and Reel 30-5/TR SOT-23-5L WS30/YYWW -40 ~ +85 C 3000/Tape and Reel 33-5/TR SOT-23-5L WS33/YYWW -40 ~ +85 C 3000/Tape and Reel Will Semiconductor Ltd. 9 May Rev1.6

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