Advanced Power Electronics Corp. Technology Licensed from International Rectifier APU1206/APU1207/APU1208/APU1209 1A VERY LOW DROPOUT POSITIVE FIXED AND ADJUSTABLE REGULATORS DESCRIPTION FEATURES Low Dropout Voltage (500mV at 1A) 2% Voltage Reference Accuracy Low Ground Current 1A Maximum Quiescent Current in Shutdown (APU1207, APU1208) Fast Transient Response Current Limit and Thermal Shutdown Error Flag Signal for Output out of Regulation (APU1207, APU1208) RoHS Compliant & Halogen Free APPLICATIONS 2.5V Supply from 3.3V Input for the new generation of Logic ICs Computer Mother Board, Add-On Cards High Efficiency Post Regulator in Switch Mode Power Supply (SMPS) The APU1206 family of devices are ultra low dropout 1A regulators using PNP transistor as the pass element. These products are ideal when a single input supply is only available and the dropout voltage is less than 1V, exceeding the minimum dropout characteristics of NPN/ PNP hybrid regulators. One common application of these regulators is where input is 3.3V and a 2.5V output is needed. Besides the low dropout of less than 0.5V, other features of the family of the parts are: micro-power shutdown capability and output UVLO detection where Flag pin is switched low when output is below 5% of its nominal point. TYPICAL APPLICATION VOUT VOUT 3 APU1206XX Gnd 2 VIN C2 1 VIN C1 Figure 1 - Typical application of the 1206-XX in a 3-Pin SOT-223 package. Data and specifications subject to change without notice. 1 201210266 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 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 0 To 125 2-PIN TO-252(H) APU1206H-18 APU1206H-25 APU1206H-33 NA NA NA NA NA 3-PIN SOT-223(K) APU1206K-18 APU1206K-25 APU1206K-33 NA NA NA NA NA Basic Part 8-PIN PLASTIC SOIC(M) NA NA NA APU1207M-18 APU1207M-25 APU1207M-33 APU1208M APU1209M VOLTAGE PIN FUNCTIONS 1.8V 2.5V 3.3V 1.8V 2.5V 3.3V Adj Adj VIN, VOUT, Gnd VIN, VOUT, Gnd VIN, VOUT, Gnd VIN, VOUT, Gnd, Enable, Flag VIN, VOUT, Gnd, Enable, Flag VIN, VOUT, Gnd, Enable, Flag VIN, VOUT, Gnd, Flag, Adj VIN, VOUT, Gnd, Enable, Adj 2 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 ABSOLUTE MAXIMUM RATINGS Input Voltage (VIN) .................................................... 10V Enable Input Voltage ................................................ 10V Storage Temperature Range ...................................... -65C To 150C Operating Junction Temperature Range ..................... 0C To 135C PACKAGE INFORMATION 2-PIN PLASTIC TO-252 (H) APU1206 3-PIN PLASTIC SOT-223 (K) APU1206 FRONT VIEW TOP VIEW 3 VOUT Tab is Gnd 1 JA=70C/W for 0.5" Sq pad VIN 8-PIN PLASTIC SOIC (M) APU1208 APU1207 1 8 2 7 3 6 4 5 Gnd Gnd Gnd Gnd JA=55C/W for 1" Sq pad Flag VIN VOUT Adj 1 8 2 7 3 6 4 5 Gnd Gnd Gnd Gnd JA=55C/W for 1" Sq pad 3 VOUT 2 Gnd 1 VIN JA=90C/W for 0.4" Sq pad APU1209 TOP VIEW TOP VIEW TOP VIEW Enable VIN VOUT Flag Tab is Gnd Enable VIN VOUT Adj 1 8 2 7 3 6 4 5 Gnd Gnd Gnd Gnd JA=55C/W for 1" Sq pad ELECTRICAL SPECIFICATIONS Unless otherwise specified, these specifications apply over CIN=COUT=10F, VIN=Vo+1V, VOUT=VFB (For adjustable version only), and TA=25C. Typical values refer to TA=25C. Low duty cycle pulse testing is used which keeps junction and case temperatures equal to the ambient temperature. PARAMETER Initial Voltage Accuracy (see Table 1 for nominal values) Line Regulation Load Regulation (Note 1) SYM Vo Output Voltage Temp Coef. Dropout Voltage (Note 2) V O(T) VI(O) Io=100mA Io=500mA Io=1000mA IQ VIN=Vo + 1 for all conditions: Io=100mA Io=500mA Io=1000mA ICL Vo=5% Below Regulation Point VIN(min) Ground Current (Note 3) Current Limit Minimum Input Voltage APU1208, APU1209 Adjust Pin Current Minimum Load Current VI VL IADJ IO(min) TEST CONDITION Io=10mA, TA=25 MIN -2 Vo + 1V<VIN<10 10mA<Io<1A 1mA<Io<150mA TYP MAX 2 UNITS % 0.5 0.5 1 0.7 0.5 100 200 400 650 % % 20 100 300 500 3 15 50 1.1 VIN=2.5V, Vo=VADJ 1.4 2.1 2.3 0.1 1 ppm/ mV mA A V A mA 3 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 PARAMETER APU1207, APU1209 Ground Current - SD Activated Enable Pin Input LO Voltage Enable Pin Input HI Voltage Enable Pin Input LO Current Enable Pin Input HI Current APU1207, APU1208 Flag Output Threshold Voltage Flag Output Hysteresis Voltage Flag Output Saturation Voltage SYM IQ(SD) VEN(L) VEN(L) TEST CONDITION Enable=Open Regulator OFF Regulator ON VEN(L)=0V to 0.8V VEN(L)=2V to Vin MIN Note 2: Dropout voltage is defined as the minimum differential voltage between VIN and VOUT required to maintain regulation at VOUT. It is measured when the output voltage drops 1% below its nominal value. MAX UNITS 0.01 1 0.8 0.1 100 2 600 A V V A A 2 VTH(FG) VHYS Output Ramping Up VF(SAT) Io=5mA Io=500A Note 1: Low duty cycle pulse testing with Kelvin connections is required in order to maintain accurate data. TYP 5 0.8 400 230 %VO %VO mV Note 3: Ground current is the regulator quiescent current plus the pass transistor current. The total current from the supply is the sum of the load current plus the ground pin current. PIN DESCRIPTIONS PIN SYMBOL VIN (All devices) 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 0.6V higher than VOUT in order for the device to regulate properly. VOUT The output of the regulator. A minimum of 2.2F capacitor must be connected from this pin (All devices) to ground. Gnd Ground pin. This pin must be connected to the lowest potential in the system and all other (All devices) pins must be at higher potential with respect to this pin. Enable Enable pin. A low signal or left open on this pin shuts down the output. This pin must be tied (APU1207, APU1209) HI or to VIN for normal operation. Flag An open collector output that switches low when the output voltage drops about 4% below (APU1207, APU1208) its expected regulated voltage. Adj A resistor divider from this pin to the VOUT pin and ground sets the output voltage. (APU1208, APU1209) APPLICATION INFORMATION Stability The APU120X series of regulators require the use of an output capacitor as part of the frequency compensation in order to make the regulator stable. A minimum of 2.2F capacitance and the ESR in the range of 0.5 to 2 insures the stability of the system. Part Number APU1206-18 APU1206-25 APU1206-33 APU1207-18 APU1207-25 APU1207-33 APU1208 APU1209 Output Voltage 1.8V 2.5V 3.3V 1.8V 2.5V 3.3V 1.24V 1.24V Table 1 - Output voltage vs. part number. 4 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 TYPICAL APPLICATION VOUT 3 VOUT APU1206XX Gnd 2 VIN C2 1 VIN C1 Note: Tab must also be connected to ground. Figure 2 - Typical application of APU1206. Ref Desig C1 C2 Description Capacitor Capacitor 5 Gnd Qty 1 1 Part # 10F, Tantalum 10F, Tantalum Manuf AVX AVX Flag 4 Error Flag VOUT 3 VOUT 7 Gnd VIN 2 8 Gnd Enable 1 6 Gnd APU1207 R1 C2 SD Enable VIN C1 Figure 3 - Typical application of APU1207. Ref Desig C1 C2 R1 Description Capacitor Capacitor Resistor Qty 1 1 1 Part # 10F, Tantalum 10F, Tantalum 10K,5% Manuf AVX AVX Panasonic 5 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 TYPICAL APPLICATION 5 Gnd Adj 4 6 Gnd VOUT 3 7 Gnd VIN 2 8 APU1208 Gnd Flag VOUT R1 C2 R3 1 R2 Error Flag VIN ( C1 Vo = 1.24 X 1 + R1 R2 ) Figure 4 - Typical application of APU1208 in 3.3V to 2.5V regulator. Ref Desig C1 C2 R1 R2 R3 Description Capacitor Capacitor Resistor Resistor Resistor Qty 1 1 1 1 1 Part # 10F, Tantalum 10F, Tantalum 127, 1% 124, 1% 10K, 5% Manuf AVX AVX 6 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 TYPICAL APPLICATION 5 Gnd Adj 4 6 Gnd VOUT 3 7 Gnd VIN 2 APU1209 VOUT R1 C2 R2 8 Enable Gnd SD 1 Enable VIN Vo = 1.24 X C1 ( 1 + R1 R2 ) Figure 5 - Typical application of APU1209 in 3.3V to 2.5V regulator. Ref Desig C1 C2 R1 R2 Description Capacitor Capacitor Resistor Resistor Qty 1 1 1 1 Part # 10F, Tantalum 10F, Tantalum 127, 1% 124, 1% Manuf AVX AVX 7 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 CHARACTERISTICS APU1209 Line Regulation @ 5mA to 100mA Vout Percent Error % Error Vout 1.25 5.00% 1.245 4.50% 2V 2. 5V 3V 4V 3. 5V 5V 4. 5V 6V 10 .5 10 .5 11 12 11 5. 5V 0.00% 6. 5V 1.2 7V 0.50% 8V 1.00% 1.205 7. 5V 1.50% 1.21 9V 1.215 8. 5V 2.00% V 2.50% 1.22 9. 5V 1.225 V 3.00% V 3.50% 1.23 V 4.00% V 1.24 1.235 Input Voltage Figure 6 APU1209 Maximum Output Current ~ 1.25A while in the current limit mode. APU1209 Output Voltage in Yellow. A DC offset equal to the output voltage is applied to improve resolution. The output is regulating current in this mode. Figure 7 5 Sep 2001 15:15:05 8 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 CHARACTERISTICS APU1209 Voltage Drop-out Variation w ith Am bient Tem perature w ith various load currents APU1209 Vout Variation w ith Ambient Tem perature w ith Vin @ 3.5V and 12V 2.55 2.5 2.54 2.4 2.53 2.3 2.52 2.1 100 mA 2.0 500 mA 1A 1.9 2.51 3.5 V 2.50 12V 1.8 2.49 1.7 2.48 1.6 2.47 1.5 -50 0 50 100 2.46 150 -50 Tem pe ra ture ( ) 0 Figure 8 50 100 150 Figure 9 APU1209 Ground Current Variation with Ambient Temperature 100 90 80 70 60 mA mA 2.2 50 40 30 20 10 0 -50 0 50 100 150 Ambie nt Tem pe ra ture ( ) Figure 10 9 Advanced Power Electronics Corp. APU1206/APU1207/APU1208/APU1209 MARKING INFORMATION SO-8 Part Number Output Voltage U120X-XX YWWSSS Date Code (YWWSSS) YLast Digit Of The Year WWWeek SSSSequence SOT-223 Part Number Output Voltage U1206-XX YWWSSS Date Code (YWWSSS) YLast Digit Of The Year WWWeek SSSSequence TO-252 Part Number Output Voltage U1206-XX YWWSSS Date Code (YWWSSS) YLast Digit Of The Year WWWeek SSSSequence 10