APU1205-28

Technology Licensed from International Rectifier APU1205 APU1205-18 / APU1205-25 / APU1205-28 APU1205-30 / APU1205-33 / APU1205-36 FEATURES SOT-23 Package Stable with 2.2m F Ceramic Capacitor 1% Voltage Reference Accuracy Only 270mV Dropout at 300mA and 170mV Dropout at 150mA 5m A Quiescent Current in Shutdown Current Limit and Thermal Shutdown Logic Input Enable Pin RoHS Compliant 300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS DESCRIPTION The APU1205 device is an efficient linear voltage regulator with better than 1% initial voltage accuracy, very low dropout voltage and very low ground current designed especially for hand held, battery powered applications. Other features of the device are: TTL compatible enable/ shutdown control input, current limiting and thermal shutdown. The APU1205 is available in fixed and adjustable output voltage versions in a small SOT-23 5-Pin package. APPLICATIONS Laptop, Notebook & Palmtop computers Battery Powered Equipments PCMCIA Vcc & Vpp Regulator Consumer Electronics High Efficiency Linear Power Supplies TYPICAL APPLICATION VIN C1 2.2uF 1 2 VIN VOUT 5 R1 C2 2.2uF R2 VOUT Vo = 1.253 1+ Gnd ( R1 R2 ) SD Enable 3 En Adj 4 Figure 1 - Typical application of the APU1205 ajustable voltage regulator. 3.3V C1 2.2uF 1 2 3 VIN VOUT 5 C2 2.2uF 2.5V Gnd SD Enable En CBYP 4 C3 1000pF Figure 2 - Typical application of the APU1205-25 fixed voltage regulator. PACKAGE ORDER INFORMATION TJ (°C) 0 To 125 0 To 125 0 To 125 0 To 125 0 To 125 0 To 125 0 To 125 5-PIN SOT-23 APU1205Y5 APU1205Y5-18 APU1205Y5-25 APU1205Y5-28 APU1205Y5-30 APU1205Y5-33 APU1205Y5-36 OUTPUT VOLTAGE Adj 1.8V 2.5V 2.8V 3.0V 3.3V 3.6V 200724062-1/4 Data and specifications subject to change without notice. APU1205 APU1205-18 / APU1205-25 / APU1205-28 APU1205-30 / APU1205-33 / APU1205-36 ABSOLUTE MAXIMUM RATINGS Input Voltage (V IN) ..................................................... Enable Input Voltage ................................................. Storage Temperature Range ....................................... Operating Junction Temperature Range ...................... 10V 10V -65°C To 150°C 0°C To 150°C PACKAGE INFORMATION 5-PIN SOT-23 (Y5) En Gnd VIN 3 2 1 3 5-PIN SOT-23 (Y5) En Gnd VIN 2 1 Adjustable 4 5 Fixed 4 5 Adj VOUT uJA=2568C/W CBYP VOUT uJA=2568C/W ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over CIN=Co=22mF, Io=100mA, VIN(MIN)=2.5V(Adjustable devices) VIN=Vo + 1V(for fixed voltage devices), VOUT=VFB(for adjustable version only), CBYP=470pF(for fixed voltage devices), VENB=2V and TA=258C. Typical values refer to TA=258C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. PARAMETER Reference Voltage (See Table 1 for typical values) Line Regulation Load Regulation (Note 1) Dropout Voltage (Note 2) SYM Vo D VI D VL D VI(O) TEST CONDITION (Note 4) Vo + 1V