APU1205 A-POWER | Alldatasheet

Document overview

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Technical content

APU1205-18 / APU1205-25 / APU1205-28 APU1205-30 / APU1205-33 / APU1205-36 200724062-1/4Data and specifications subject to change without notice.

DESCRIPTION

The APU1205 device is an efficient linear voltage regula- tor 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 shut- down. The APU1205 is available in fixed and adjustable output voltage versions in a small SOT-23 5-Pin package. 300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS Stable with 2.2mF Ceramic Capacitor 1% Voltage Reference Accuracy Only 270mV Dropout at 300mA and 170mV Dropout at 150mA 5mA Quiescent Current in Shutdown Current Limit and Thermal Shutdown Logic Input Enable Pin RoHS Compliant TYPICAL APPLICATION Figure 1 - Typical application of the APU1205 ajustable voltage regulator. Figure 2 - Typical application of the APU1205-25 fixed voltage regulator. Technology Licensed from International Rectifier

APPLICATIONS

Laptop, Notebook & Palmtop computers Battery Powered Equipments PCMCIA Vcc & Vpp Regulator Consumer Electronics High Efficiency Linear Power Supplies

FEATURES

TJ (°C) 5-PIN OUTPUT SOT-23 VOLTAGE

0 To 125 APU1205Y5 Adj

0 To 125 APU1205Y5-18 1.8V 0 To 125 APU1205Y5-25 2.5V 0 To 125 APU1205Y5-28 2.8V 0 To 125 APU1205Y5-30 3.0V 0 To 125 APU1205Y5-33 3.3V 0 To 125 APU1205Y5-36 3.6V VIN VOUT 2.2uF C2 2.2uF SD Enable 3 4 VOUT Adj

1 VIN

3.3V 2.5V 1000pF 2.2uF 2.2uF SD Enable 3 4 VOUT CBYP Vo = 1.253 1+ R1 R2( )

APU1205-18 / APU1205-25 / APU1205-28 APU1205-30 / APU1205-33 / APU1205-36 ABSOLUTE MAXIMUM RATINGS

PACKAGE INFORMATION

5-PIN SOT-23 (Y5) 5-PIN SOT-23 (Y5) ELECTRICAL SPECIFICATIONS Reference Voltage (See Table 1 for typical values) Line Regulation Load Regulation (Note 1) Dropout Voltage (Note 2) Ground Current (Note 3) Ground Current-SD Activated Current Limit Thermal Regulation Adjust Pin Current Enable Pin Input LO Voltage Enable Pin Input HI Voltage Enable Pin Input LO Current Enable Pin Input HI Current uJA=2568C/WuJA=2568C/W 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. En Adj Gnd V IN V OUT Adjustable 3 2 1 4 5 Fixed En C BYP Gnd V IN V OUT 3 2 1 4 5 PARAMETER SYM TEST CONDITION MIN TYP MAX UNITS (Note 4) Vo + 1V<VIN<10V 1mA<Io<100mA 100mA<Io<300mA Io=100mA Io=100mA (Note 4) Io=50mA Io=50mA (Note 4) Io=150mA Io=150mA (Note 4) Io=300mA Io=300mA (Note 4) VEN=2V, Io=100mA Io=100mA (Note 4) Io=50mA Io=50mA (Note 4) Io=150mA Io=150mA (Note 4) Io=300mA Io=300mA (Note 4) VEN=0V to 0.8V or Open Vo=0V VIN=10V, Io=150mA, 10ms Pulse VIN=2.5V, Vo=VADJ Regulator OFF Regulator ON VEN(L)=0V to 0.8V VEN(H)=2V to VIN 320 0.005 0.8 0.1 100 170 204 270 324 120 240 420 540 2200 2900 7200 9300 420 0.05 0.1 0.01 110 140 220 260 350 400 160 600 2900 9500 0.8 %/V mV mA mA mA %/W mA V V mA mA Vo DVI DVL DVI(O) IQ IQ(SD) ICL DVP IADJ VEN(L) VEN(H)

APU1205-18 / APU1205-25 / APU1205-28 APU1205-30 / APU1205-33 / APU1205-36 PIN # PIN SYMBOL PIN DESCRIPTION The input pin of the regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum drop out voltage during the load transient response. This pin must always be higher than VOUT by at least the amount of the dropout voltage and some margin in order for the device to regulate properly. Ground pin. This pin must be connected to the lowest potential in the system and all other pins must be at higher potential with respect to this pin. Enable pin. A low signal or left open on this pin shuts down the output. This pin must be tied HI or to VIN for normal operation. A resistor divider from this pin to the VOUT pin and ground sets the output voltage. To minimize the error due to the error amplifier, select the values of the resistor dividers to be less than 10KV. A 470 to 1000pF bypass capacitor connected to this pin reduces the output noise. The output of the regulator. A minimum of 2.2mF with max ESR of 1V capacitor must be connected from this pin to ground to insure stability. 5-PIN Output SOT-23 Voltage APU1205 1.25V APU1205-18 1.8V APU1205-25 2.5V APU1205-28 2.8V APU1205-30 3.0V APU1205-33 3.3V APU1205-36 3.6V Note 3: Ground current is the regulator quiescent cur- rent plus the pass transistor current. The total current from the supply is the sum of the load current plus the ground pin current. Note 4: The specification applies for the junction tem- perature of 0 to +1258C. Note 1: Low duty cycle pulse testing with Kelvin con- nections is required in order to maintain accurate data. Note 2: Dropout voltage is defined as the minimum dif- ferential voltage between VIN and VOUT required to main- tain regulation at VOUT. It is measured when the output voltage drops 1% below its nominal value. PIN DESCRIPTIONS The output voltage of the adjustable device can be set using: Where: R1 = Resistor connected from output to the Adj pin R2 = Resistor connected from Adj pin to Gnd VIN Gnd En Adj (Adjustable Only) CBYP (Fixed Only) VOUT Table 1- Nominal output voltage vs. part number. Vo = 1.253 1+ R1 R2( )