LD1117A/B SERIES LOW DROP FIXED AND ADJUSTABLE POSITIVE VOLTAGE REGULATORS PRELIMINARY DATA LOW DROPOUT VOLTAGE (1.15V TYP @ IOUT=1.2A, 25 oC) VERY LOW QUIESCENT CURRENT (5mA TYP @ 25 oC) TYPE A: OUTPUT CURRENT UP TO 1000mA TYPE B: OUTPUT CURRENT UP TO 1200mA FIXED OUTPUT VOLTAGE OF: 1.8V, 2.5V, 2.85V, 3.3V, 5.0V ADJUSTABLE VERSION AVAILABILITY (Vref=1.25V) INTERNAL CURRENT AND THERMAL LIMIT ONLY 10 F FOR STABILITY AVAILABLE IN 2% (AT 25oC) AND 4% IN FULL TEMPERATURE RANGE HIGH SUPPLY VOLTAGE REJECTION : (80dB TYP) TEMPERATURE RANGE : 0oC TO 125oC DESCRIPTION The LD1117A and LD1117B are two LOW DROP Voltage Regulator able to provide respectively up to 1000mA and 1200mA of Output Current, available even in adjustable version (Vref=1.25V). Concerning fixed versions, are offered the following Output Voltages: 1.8V, 2.5V, 2.85V, 3.3V and 5.0V. The 2.85V type is ideal for SCSI-2 lines active termination. The device is supplied in: SOT-223, DPAK. The SOT-223 TO-252 (DPAK) SOT-223 and DPAK surface mount packages optimize the thermal characteristics even offering a relevant space saving effect. High efficency is assured by NPN pass transistor. In fact in this case, unlike than PNP one, the Quiescent Current flows mostly into the load. Only a very common 10F minimum capacitor is needed for stability. The ADJUSTABLE LD1117 is pin to pin compatible with the other standard Adjustable voltage regulators maintaining the better performances in terms of Drop and Tolerance. BLOCK DIAGRAM June 2000 1/16 LD1117A/B SERIES ABSOLUTE MAXIMUM RATINGS Symbol Value Unit V IN DC Input Voltage Parameter 10 V P to t Power Dissipation 12 T stg Storage Temperature Range To p Operating Junction Temperature Range W -40 to 150 o C 0 to 125 o C Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is not implied. Over the above suggested Max Power Dissipation a Short Circuit could definetively damage the device. THERMAL DATA Symbol Parameter R thj- ca se Thermal Resistance Junction-case APPLICATION CIRCUIT 2/16 SOT-223 DPAK 15 8 Unit o C/W LD1117A/B SERIES CONNECTION DIAGRAM AND ORDERING NUMBERS (top view) SOT-223 SOT-223 DPAK DPAK LD1117AS18TR LD1117BS18TR LD1117AS25TR LD1117BS25TR LD1117AS28TR LD1117BS28TR LD1117AS33TR LD1117BS33TR LD1117AS50TR LD1117BS50TR LD1117ADT18TR LD1117BDT18TR LD1117ADT25TR LD1117BDT25TR LD1117ADT28TR LD1117BDT28TR LD1117ADT33TR LD1117BDT33TR LD1117ADT50TR LD1117BDT50TR LD1117AST-R LD1117BST-R LD1117ADT-R LD1117BDT-R Output Voltage 1.8V 1.8V 2.5V 2.5V 2.85V 2.85V 3.3V 3.3V 5V 5V ADJUSTABLE FROM 1.25 T O 15V 3/16 LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117A#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC Min. Typ. Max. Unit 1.764 1.8 1.836 V VO Output Voltage VO Output Voltage IO = 0 to 1000 mA VI = 3.3 to 8 V 1.872 V V O Line Regulation VI = 3.3 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 3.3 V IO = 0 to 1000 mA 1 10 mV VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 8 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W SVR VD V O(pwr) Thermal Regulation VI = 3.8 V 1.728 5 o 10 V 10 mA 1000 1200 mA 60 80 dB ELECTRICAL CHARACTERISTICS FOR LD1117B#18 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC VO Output Voltage VI = 3.8 V VO Output Voltage IO = 0 to 1200 mA VI = 3.3 to 8 V V O Line Regulation VI = 3.3 to 8 V IO = 0 mA V O Load Regulation VI = 3.3 V IO = 0 to 1200 mA VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 8 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation 4/16 o Ta = 25 C 30ms Pulse Min. Typ. Max. Unit 1.764 1.8 1.836 V 1.872 V 1 6 mV 1 10 mV 10 V 10 mA 1.728 5 1200 1500 mA 60 80 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117A#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC Min. Typ. Max. Unit 2.45 2.5 2.55 V VO Output Voltage VO Output Voltage IO = 0 to 1000 mA VI = 3.9 to 8 V 2.6 V V O Line Regulation VI = 3.9 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 3.9 V IO = 0 to 1000 mA 1 10 mV VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W Min. Typ. Max. Unit 2.45 2.5 2.55 V 2.6 V SVR VD V O(pwr) Thermal Regulation VI = 4.5 V 2.4 5 o 10 V 10 mA 1000 1200 mA 60 80 dB ELECTRICAL CHARACTERISTICS FOR LD1117B#25 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC VO Output Voltage VI = 4.5 V VO Output Voltage IO = 0 to 1200 mA VI = 3.9 to 8 V V O Line Regulation VI = 3.9 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 3.9 V IO = 0 to 1200 mA 1 10 mV 10 V 10 mA VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation o Ta = 25 C 30ms Pulse 2.4 5 1200 1500 mA 60 80 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W 5/16 LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117A#28 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit IO = 10 mA Tj = 25 oC 2.793 2.85 2.907 V Output Voltage IO = 0 to 1000 mA VI = 4.25 to 10 V 2.736 2.964 V V O Line Regulation VI = 4.25 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 4.25 V IO = 0 to 1000 mA 2 10 mV VI Operating Input Voltage IO = 100 mA 10 V Id Quiescent Current VI 10 V IO = 0 mA 4.5 10 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W VO Output Voltage VO SVR VD V O(pwr) Thermal Regulation Test Conditions VI = 4.85 V o 1000 1200 mA 60 75 dB ELECTRICAL CHARACTERISTICS FOR LD1117B#28 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Min. Typ. Max. Unit VO Output Voltage VI = 4.85 V IO = 10 mA Tj = 25 oC 2.793 2.85 2.907 V VO Output Voltage IO = 0 to 1200 mA VI = 4.25 to 10 V 2.736 2.964 V V O Line Regulation VI = 4.25 to 10 V IO = 0 mA 1 6 mV V O Load Regulation VI = 4.25 V IO = 0 to 1200 mA 2 10 mV 10 V 10 mA VI Parameter Test Conditions Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation 6/16 o Ta = 25 C 30ms Pulse 4.5 1200 1500 mA 60 75 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117A#33 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC Min. Typ. Max. Unit 3.234 3.3 3.366 V VO Output Voltage VO Output Voltage IO = 0 to 1000 mA VI = 4.75 to 10 V 3.432 V V O Line Regulation VI = 4.75 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 4.75 V IO = 0 to 1000 mA 1 10 mV VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W SVR VD V O(pwr) Thermal Regulation VI = 5.3 V 3.168 5 o 10 V 10 mA 1000 1200 mA 60 75 dB ELECTRICAL CHARACTERISTICS FOR LD1117B#33 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC VO Output Voltage VI = 5.3 V VO Output Voltage IO = 0 to 1200 mA VI = 4.75 to 10 V V O Line Regulation VI = 4.75 to 10 V IO = 0 mA V O Load Regulation VI = 4.75 V IO = 0 to 1200 mA VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation o Ta = 25 C 30ms Pulse Min. Typ. Max. Unit 3.234 3.3 3.366 V 3.432 V 1 6 mV 1 10 mV 10 V 10 mA 3.168 5 1200 1500 mA 60 75 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W 7/16 LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117A#50 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit VI = 7 V IO = 10 mA Tj = 25 oC 4.9 5 5.1 V Output Voltage IO = 0 to 1000 mA VI = 6.4 to 10 V 4.8 5.2 V V O Line Regulation VI = 6.4 to 8 V IO = 0 mA 1 6 mV V O Load Regulation VI = 6.4 V IO = 0 to 1000 mA 1 10 mV VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W VO Output Voltage VO SVR VD V O(pwr) Thermal Regulation Test Conditions 5 o 10 V 10 mA 1000 1200 mA 60 80 dB ELECTRICAL CHARACTERISTICS FOR LD1117B#50 (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Min. Typ. Max. Unit VO Output Voltage VI = 7 V IO = 10 mA Tj = 25 oC 4.9 5 5.1 V VO Output Voltage IO = 0 to 1200 mA VI = 6.4 to 10 V 4.8 5.2 V V O Line Regulation VI = 6.4 to 10 V IO = 0 mA 1 6 mV V O Load Regulation VI = 6.4 V IO = 0 to 1200 mA 1 10 mV 10 V 10 mA VI Parameter Test Conditions Operating Input Voltage IO = 100 mA Id Quiescent Current VI 10 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation 8/16 o Ta = 25 C 30ms Pulse 5 1200 1500 mA 60 80 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W LD1117A/B SERIES ELECTRICAL CHARACTERISTICS FOR LD1117ADJ (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC Min. Typ. Max. Unit 1.225 1.25 1.275 V VO Output Voltage VO Output Voltage IO = 0 to 1000 mA VI = 2.75 to 10 V 1.3 V V O Line Regulation VI = 2.75 to 10 V IO = 0 mA 1 6 mV V O Load Regulation VI = 2.75 V IO = 0 to 1000 mA 1 10 mV VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 8 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 C Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1000 mA 1 1.05 1.15 1.10 1.15 1.30 V V V Ta = 25 oC 30ms Pulse 0.08 0.2 %/W SVR VD V O(pwr) Thermal Regulation VI = 5.3 V 1.2 5 o 10 V 10 mA 1000 1200 mA 60 80 dB ELECTRICAL CHARACTERISTICS FOR LD1117BDJ (refer to the test circuits, Tj = 0 to 125 oC, CO = 10 F, CI = 10 F unless otherwise specified) Symbol Parameter Test Conditions IO = 10 mA Tj = 25 oC VO Output Voltage VI = 5.3 V VO Output Voltage IO = 0 to 1200 mA VI = 2.75 to 10 V V O Line Regulation VI = 2.75 to 10 V IO = 0 mA V O Load Regulation VI = 2.75 V IO = 0 to 1200 mA VI Operating Input Voltage IO = 100 mA Id Quiescent Current VI 8 V IO = 0 mA IO Output Current VI - VO = 5 V Tj = 25 oC Supply Voltage Rejection IO = 40 mA f = 120 Hz VI - VO = 3 V Vripple = 1 Vpp Dropout Voltage IO = 100 mA IO = 500 mA IO = 1200 mA SVR VD V O(pwr) Thermal Regulation o Ta = 25 C 30ms Pulse Min. Typ. Max. Unit 1.225 1.25 1.275 V 1.3 V 1 6 mV 1 10 mV 10 V 10 mA 1.2 5 1200 1500 mA 60 80 dB 1 1.05 1.15 1.10 1.15 1.30 V V V 0.08 0.2 %/W 9/16 LD1117A/B SERIES TYPICAL APPLICATIONS: FIGURE 1: Negative Supply FIGURE 2: Active Terminator for SCSI-2 BUS FIGURE 3: Circuit for Increasing Output Voltage 10/16 LD1117A/B SERIES TYPICAL APPLICATIONS (continued): FIGURE 4: Voltage Regulator With Reference FIGURE 5: Battery Backed-up Regulated Supply 11/16 LD1117A/B SERIES TYPICAL APPLICATIONS (continued): FIGURE 6: Post-Regulated Dual Supply 12/16 LD1117A/B SERIES LD1117 ADJUSTABLE: APPLICATION NOTE The LD1117 ADJUSTABLE has a thermal stabilized 1.250.012V reference voltage between the OUT and ADJ pins. IADJ is 60A typ. (120A max.) and I ADJ is 1A typ. (5A max.). R1 is normally fixed to 120. From figure 7 we obtain: VOUT = VREF + R2 (IADJ + IR1) = VREF + R2 (IADJ + VREF / R1) = VREF (1 + R2 / R1) + R2 x IADJ. In normal application R2 value is in the range of few Kohm, so the R2 x IDJ product could not be considered in the VOUT calculation; then the above expression becomes: VOUT = VREF (1 + R2 / R1). In order to have the better load regulation it is important to realize a good Kelvin connection of R1 and R2 resistors. In particular R1 connection must be realized very close to OUT and ADJ pin, while R2 ground connection must be placed as near as possible to the negative Load pin. Ripple rejection can be improved by introducing a 10F electrolitic capacitor placed in parallel to the R2 resistor (see Fig.8) FIGURE 7: Adjustable Output Voltage Application Circuit FIGURE 8: Adjustable Output Voltage Application with improved Ripple Rejection 13/16 LD1117A/B SERIES SOT-223 MECHANICAL DATA mm DIM. mils MIN. TYP. MAX. MIN. TYP. MAX. a 2.27 2.3 2.33 89.4 90.6 91.7 b 4.57 4.6 4.63 179.9 181.1 182.3 c 0.2 0.4 0.6 7.9 15.7 23.6 d 0.63 0.65 0.67 24.8 25.6 26.4 e1 1.5 1.6 1.7 59.1 63 66.9 e4 0.32 12.6 f 2.9 3 3.1 114.2 118.1 122.1 g 0.67 0.7 0.73 26.4 27.6 28.7 l1 6.7 7 7.3 263.8 275.6 287.4 l2 3.5 3.5 3.7 137.8 137.8 145.7 L 6.3 6.5 6.7 248 255.9 263.8 L e1 l2 d a c b e4 f l1 C B C E g P008B 14/16 LD1117A/B SERIES TO-252 (DPAK) MECHANICAL DATA mm DIM. MIN. inch TYP. MAX. MIN. TYP. MAX. A 2.2 2.4 0.086 0.094 A1 0.9 1.1 0.035 0.043 A2 0.03 0.23 0.001 0.009 B 0.64 0.9 0.025 0.035 B2 5.2 5.4 0.204 0.212 C 0.45 0.6 0.017 0.023 C2 0.48 0.6 0.019 0.023 D 6 6.2 0.236 0.244 E 6.4 6.6 0.252 0.260 G 4.4 4.6 0.173 0.181 H 9.35 10.1 0.368 0.397 L2 0.8 L4 0.031 0.6 1 0.023 0.039 A1 C2 A H A2 C DETAIL "A" L2 D = 1 = G 2 = = = E = B2 3 B DETAIL "A" L4 0068772-B 15/16 LD1117A/B SERIES Information furnished is believed to be accurate and reliable. However, STMicroelectronic s assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems withoutexpress written approval of STMicroelectronics. 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