A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS Features Description GM7130 of regulators provides all the active functions for a step- down (buck) switching regulator, and drives 3A load with excellent line and load regulation. GM7130 is available in fixed output voltages of 3.3V, 5V, 12V 15V , and a versatile Adjustable output version. These regulators are simple to use and require a minimum number of external components. Features include internal frequency compensation and a fixed-frequency oscillator. The GM7130 is high-efficiency replacements for popular three-terminal linear regulators, and is requiring a smaller heatsink or even no heatsink. 3.3V, 5V, 12V, 15V, Adjustable output versions GM7130 performs well with standard inductors from several manufacturers, and simplifying the design of switch-mode power supplies. GM7130 guarantees ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is induced with 50 uA (typical) standby current. The output switch has cycle-by-cycle current limiting as well as thermal shutdown for full protection under fault conditions. 52 kHz fixed frequency internal oscillator Adjustable version output voltage range 1.23V to 37V ±4% max over line and load conditions 3A output current Input voltage range 7V to 40V Requires only 4 external components High efficiency TTL shutdown capability, low power standby mode Thermal shutdown, current limit protection Uses standard inductors Application Pre-regulator for linear regulators On-card/ board switching regulators High-efficiency step-down buck regulator Positive to negative converter (buck-boost) 7V - 40V Unregulated DC Input +VIN Feedback 4 GM7130-5.0 1 + 3 GND +5V Regulated Output 3A Load 100 µH L1 5 ON/ OFF + D1 1N5822 COUT 680 µF GM 431 CIN 100 µF Output 2 www.gammamicro.com GM7130 V0.1 TYPICAL APPLICATIONS 1 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS MARKING INFORMATION & PIN CONFIGURATIONS (Top View) 2 TO-220- 5B TO-220-5 TO-263-5(D PAK) . . . VVAYWW VVAYWW VIN Output Ground VIN GM7130 GM7130 GM7130 V VAYWW ON/OFF Feedback VIN Output Ground ON/OFF Feedback ON/OFF Feedback Output Ground 1 2 3 4 5 V V, VVV A Y WW = Output Voltage (33 = 3.3V, 120= 12V, A =A dj ) = Assembly Location =Year =Weekly ORDERING INFORMATION GM7130 Ordering Number 2 Output Voltage Package GM7130-ATB5T Adj TO-220-5 GM7130-ATB5BT Adj TO-220-5B GM7130-ATA5R Adj TO-263-5 GM7130-ATA5T Adj TO-263-5 GM7130-3.3TB5T 3.3 TO-220-5 50 Units / Tube GM7130-3.3TB5BT 3.3 TO-220-5B 50 Units / Tube GM7130-3.3TA5R 3.3 TO-263-5 800 Units/ Tape & Reel GM7130-3.3TA5T 3.3 TO-263-5 50 Units / Tube GM7130-5.0TB5T 5.0 TO-220-5 GM7130-5.0TB5BT 5.0 TO-220-5B GM7130-5.0TA5R 5.0 TO-263-5 800 Units/ Tape & Reel GM7130-5.0TA5T 5.0 TO-263-5 50 Units / Tube GM7130-12TB5T 12 TO-220-5 50 Units / Tube GM7130-12TB5BT 12 TO-220-5B 50 Units / Tube GM7130-12TA5R 12 TO-263-5 GM7130-12TA5T 12 TO-263-5 GM7130-15TB5T 15 TO-220-5 GM7130-15TB5BT 15 TO-220-5B Shipping 50 Units / Tube 50 Units / Tube 800 Units/ Tape & Reel 50 Units / Tube 50 Units / Tube 50 Units / Tube 800 Units/ Tape & Reel 50 Units / Tube 50 Units / Tube 50 Units / Tube GM7130-15TA5R 15 TO-263-5 800 Units/ Tape & Reel GM7130-15TA5T 15 TO-263-5 50 Units / Tube * TB5B: Bent and Staggered Leads of TO-220 package ** For detail Ordering Number identification, please see last page. A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS ABSOLUTE MAXIMUM RATINGS Rating Value Unit Maximum Supply Voltage 45 V ON/OFF Pin Input Voltage -0.3 V VIN V -1.0 V Internally Limited - -65 to + 150 °C +150 °C Minimum ESD Rating (C=100pF, R=1.5kW) 2 kV Lead Temperature (Soldering, 10 seconds) +260 °C Value Unit Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range Maximum Junction Temperature OPERATING RATINGS Rating -40 Operating Temperature Range Supply Voltage TJ 125 °C V 40 BLOCK DIAGRAM + CIN V IN Internal Regulator 1 ON/OFF 5 ON/OFF 4 Feedback R2 Fixed Gain Error AMP Comparator + 1.0K R1 - 3 AMP Switch + Driver - Output VOUT L1 2 1.23V Band-Gap Reference D1 52kHz Oscillator Reset Thermal Shutdown Current Limit + C out 3 L O A D GND GM 431 GM7130 Unregulated DC Input 3 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS ELECTRICAL CHARACTERISTICS: GM7130-3.3 (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Conditions Symbol Min Typ Max Unit VIN = 12V, ILOAD = 0.5A VOUT 3.234 3.3 3.366 V VIN VOUT Parameter Output Voltage Output Voltage - GM7130 6V 40V, 0.5A ILOAD 3.0A VIN = 12V, ILOAD = 3.0A Efficiency h 3.168/ 3.135 3.3 3.432/ 3.465 - 75 V - % ELECTRICAL CHARACTERISTICS: GM7130-5.0 (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Conditions Symbol Min Typ Max Unit VIN = 12V, ILOAD = 0.5A VOUT 4.900 5.0 5.100 V Parameter Output Voltage Output Voltage - GM7130 8V VIN 40V, 0.5A ILOAD 3.0A VIN = 12V, ILOAD = 3.0A Efficiency VOUT h 4.800/ 4.750 5.0 5.200/ 5.250 - 77 V - % ELECTRICAL CHARACTERISTICS: GM7130-12 (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Parameter Output Voltage Output Voltage - GM7130 Efficiency 15V Conditions Symbol Min Typ Max Unit VIN = 25V, ILOAD = 0.5A VOUT 11.76 12.0 12.24 V VIN 40V, 0.5A ILOAD 3.0A VOUT VIN = 15V, ILOAD = 3.0A h 11.52/ 11.40 12.0 12.48/ 12.60 - 88 V - % ELECTRICAL CHARACTERISTICS: GM7130-15 (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Parameter Output Voltage Output Voltage - GM7130 GM7130 Efficiency 4 Conditions Symbol Min Typ Max Unit VIN = 25V, ILOAD = 0.5A VOUT 14.70 15.0 15.30 V 18V VIN 40V, 0.5A ILOAD 3.0A VOUT VIN = 18V, ILOAD = 3.0A h 14.40/14.25 15.0 15.60/ 15.75 - 88 - V % A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS ELECTRICAL CHARACTERISTICS: GM7130-ADJ (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Conditions Symbol Min Typ Max Unit VIN = 12V, ILOAD = 0.5A, VOUT = 5V VOUT 1.217 1.230 1.243 V Parameter Feedback Voltage Feedback Voltage - GM7130 Efficiency 8V VIN 40V, 0.5A ILOAD 3.0A VOUT VOUT = 5V 1.193/1.180 1.230 1.267/1.280 - h VIN = 12V, ILOAD = 3A, VOUT=5V V - 77 % ELECTRICAL CHARACTERISTICS: All Output Voltage Versions (Specifications with standard type face are for TJ = 25 C, and those with boldface type apply over full Operating Temperature Range. Unless otherwise specified, VIN= 12V for the 3.3V, 5.0V and ADJ version, VIN= 25V for 12V version. and VIN= 30V for 15V version. ILOAD = 500 mA) Parameter Feedback Bias Current Oscillator Frequency Saturation Voltage Max Duty Cycle (ON) Current Limit Output Leakage Current Quiescent Current Standby Quiescent Current Thermal Resistance ON/OFF Pin Logic Input Level Conditions Symbol Min Typ Max Unit VOUT = 5V (Adjustable Version Only) Ib - 50 100 / 500 nA (Note 11) fo 47 / 42 52 58 / 63 kHz IOUT = 3A (Notes 4) VSAT - 1.4 1.8 / 2.0 V (Note 5) DC 93 98 - % (Note 4, 11) ICL 4.2 / 3.5 5.8 6.9 / 7.5 A IL - 7.5 2 30 mA IQ - 5 10 mA ISTBY - 50 200 µA TO-220 Package, Junction to Ambient (Note 8) qJA TO-220 Package, Junction to Ambient (Note 9) qJA TO-220,TO-263 Package, Junction to Case qJC qJA 65 45 2 50 -- °C/W TO-263 Package, Junction to Ambient (Note 10) - VOUT=0V VIH 2.2 / 2.4 1.4 - V VOUT = Nominal Output Voltage VIL - 1.2 1.0 / 0.8 V ON/OFF Pin = 5V (OFF) IIH - 12 30 µA ON/OFF Pin = 0V (ON) IIL - 0 10 µA (Notes 6, 7) Output = -1 V Output = -1V (Note 6) ON/OFF Pin = 5V (OFF) GM 431 GM7130 ON/OFF Pin Input Current 5 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS ELECTRICAL CHARACTERISTICS Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not guarantee specific performance limits. Guaranteed specifications and Test conditions are shown in Electrical Characteristics. Note 2: All limits guaranteed at 25°C (standard type face) and over full operating temperature range (bold type face). All 25°C limits are 100% production tested. All limits over full operating temperature range are guaranteed via correlation using standard Statistica Quality Control methods. Note 3: External components such as the catch diode, inductor, input and output capacitors can affect switching regulator system performance. When the GM7130 is used as shown in the Figure 1 test circuit, system performance will be as shown in system parameters section of Electrical Characteristics. Note 4: Output pin sourcing current. No diode, inductor or capacitor connected to output. Note 5: Feedback pin removed from output and connected to 0V. Note 6: Feedback pin removed from output and connected to +12V for the Adjustable, 3.3V, and 5V versions, and +25V for the 12V and 15V versions, to force the output transistor OFF. Note 7: VIN = 40V Note 8: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ½ inch leads in a socket, or on a PC board with minimum copper area. Note 9: Junction to ambient thermal resistance (no external heat sink) for the 5 lead TO-220 package mounted vertically, with ¼ inch leads soldered to a PC board containing approximately 4 square inches of copper area surrounding the leads. Note 10: If the TO-263 package is used, the thermal resistance can be reduced by increasing the PC board Copper area thermally connected to the package. Using 0.5 square inches of copper area, qJA is 50°C//W, with 1 square inch of copper area, qJA is 37°C/W, and with 1.6 or more square inches of copper area, qJA is 32°C/W. GM7130 Note 11: The oscillator frequency reduces to approximately 11 kHz in the event of an output short or an Overload which causes the regulated output voltage to drop approximately 40% from the nominal output voltage. This self- protection feature lowers the Average power dissipation of GM7130 by lowering the minimum duty cycle from 5% down to approximately 2%. 6 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS TEST CIRCUIT AND LAYOUT GUIDELINES Careful layout is important with any switching regulator. Rapidly switching currents associated with wiring inductance generate voltage transients which can cause problems. To minimize inductance and ground loops, the lengths of the leads indicated by heavy lines in Figure 1 below should be kept as short as possible. Singlepoint grounding (as indicated in Figure 1) or ground plane construction should be used for best results. When using the Adjustable version, place the programming resistors as close as possible to Gm7130, to keep the sensitive feedback wiring short. Figure 1(a). Fixed Output Voltage Versions Feedback 4 GM 7130- +VIN FIXED OUTPUT 1 L1 Output 2 GND 3 VIN Unregulated DC Input + VOUT 100 µH ON/OFF 5 + CIN 100 µF L O A D D1 COUT 680 µF CIN - 100 µF, 75V, Aluminum Electrolytic COUT - 680 µF, 25V, Aluminum Electrolytic D1 - Schottky, MBR360 L1 - 100 µH, 3L Electronic Corp. TC-101M-3.0A-6826 R1 - 2k, 0.1% R2 - 6.12k, 0.1% Feedback 4 GM7130-ADJ 1 Output 2 7V - 40V Unregulated DC Input GND 3 L1 VOUT=5.0V 100 µH ON/ OFF 5 + + CIN 100 µF D1 MBR360 VOUT = VREF ( 1 + COUT 680 µF R2 R1 L O A D R2 ) R1 where VREF = 1.23V, R1 between 1k and 5k. Figure 1(b). Adjustable Output Voltage Versions GM 431 VOUT R2 = R1 ( V -1) REF GM7130 +VIN 7 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS Typical Performance Characteristics Figure 3. Current Limit Figure 2. Switch Saturation Voltage 1.6 6.5 VIN = 25V 1.2 OUTPUT CURRENT (A) SATURATION VOLTAGE (V) 1.4 -55°C 1.0 0.8 25°C 0.6 150 °C 0.4 6.0 5.5 5.0 4.5 0.2 4.0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 -75 -50 -25 Figure 4. Dropout Voltage L1 = 150 µH 1.5 ILOAD = 1A 1.0 ILOAD = 200mA 0.5 25 50 VOUT = 5V Measured at Ground Pin TJ = 25° 18 16 14 12 10 ILOAD = 3A 8 6 RIND = 0.1W 0 4 75 100 125 150 ILOAD = 200mA 0 10 20 30 40 50 60 INPUT VOLTAGE (V) Figure 6. Standby Quiescent Current Figure 7. Minimum Operating Voltage 200 5.0 VIN = 40V Adjustable Version Only 4.5 4.0 150 INPUT VOLTAGE (V) SATURATION QUIESCENT CURRENT (µA) GM7130 JUNCTION TEMPERATURE (°C) 8 50 75 100 125 150 Figure 5. Quiescent Current ILOAD = 3A 0 -75 -50 -25 25 20 QUIESCENT CURRENT(mA) INPUT-OUTPUT DIFFERENTIAL (V) 2.0 0 JUNCTION TEMPERATURE (°C) SWITCH CURRENT (A) V ON / OFF = 5V 100 50 3.0 2.5 2.0 1.5 1.0 VIN = 12V 0.5 0 -50 -25 0 25 50 75 100 JUNCTION TEMPERATURE (°C) 3.5 125 0 -50 VOUT 1.23V ILOAD = 500 mA -25 0 25 50 75 100 125 JUNCTION TEMPERATURE (°C) A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS Typical Performance Characteristics Figure 9. Feedback Voltage vs. Duty Cycle Figure 8. Quiescent Current vs. Duty Cycle 20.0 Adjustable Version Only FEEDBACK VOLTAGE CHANGE (mV) QUIESCENT CURRENT (mA) 20.0 17.5 VIN = 7V 15.0 12.5 VIN = 40V 10.0 7.5 5.0 2.5 ILOAD = 500mA 0 0 20 40 Adjustable Version Only ILOAD = 500mA 15.0 10.0 5.0 VIN = 40V 0 VIN = 7V -5.0 -10.0 -15.0 -20.0 60 80 100 0 20 40 60 80 100 DUTY CYCLE (%) DUTY CYCLE (%) Figure 10. Maximum Power Dissipation(TO-263) Figure 11. Feedback Pin Current 100 qJA = 32°C/ W qJA = 37°C/ W 3 2 1 qJA = 50°C/ W qJA = 73°C/ W 0 0 10 20 30 40 50 60 70 80 90 100 AMBIENT TEMPERATURE (°C) 50 25 0 -25 -50 -75 -100 -75 -50 -25 0 25 50 75 100 125 150 JUNCTION TEMPERATURE (°C) GM7130 4 FEEDBACK PIN CURRENT (nA) POWER DISSIPATION (W) Adjustable Version Only 75 9 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS Typical Performance Characteristics Figure 12. Switching Waveforms Figure 13. Load Transient Response Output Voltage Change 100mv/ div Inductor Current 1A/ div 3A Load Current 1kHz 10mA 47 15 00 68µH 14 0.3 0.4 0.5 0.6 0.70.8 1.0 1.5 µH H H 0µ 47 H 0µ µH 15 0µ H 22 0µ H 33 0µ H 00 0µ 1 1.2 1.5 2 Figure 16. GM7130 -5.0 µH 00 µH 2.5 3 PROCEDURE(Adjustable Output Voltage Versions) Given: µH 0µ VOUT = Regulated Output Voltage VIN(Max) = Maximum Input Voltage ILOAD(Max) = Maximum Load Current F = Switching Frequency (Fixed at 52 kHz) H H 0µ 0µ H 0µ H 15 0µ H 10 H 68 30 0µ 0.4 0.5 0.6 0.7 0.8 1.0 1.5 2..0 2.5 3.0 MAXIMUM LOAD CURRENT(A) Figure 17. GM7130 - ADJ VOUT 1,000 E • T = (VIN - VOUT) • VIN F(in kHz) GM7130 47 7 0.3 0.4 0.5 0.60.8 2.0 2.5 3.0 1. Programming Output Voltage(Selecting R1 and R2, as shown in Figure 12. And Figure 13. Use the following formula to select the appropriate resistor values. 25 10 8 Figure 15. GM7130 - 12 22 20 0.3 10 9 10 100µH 15 10 µH 16 68 µH 00 00 10 150µH Figure 14. GM7130 -3.3 33 35 3 220µH 12 MAXIMUM LOAD CURRENT(A) 47 50 45 40 2.5 18 15 MAXIMUM LOAD CURRENT(A) 68 60 2 330µH 20 MAXIMUM LOAD CURRENT(A) 10 70 1.5 470µH 20 µH 150 1 µH 680µH 68 6 5 0.3 0.4 0.5 0.6 0.8 MAXIMUM INPUT VOLTAGE(V) µH 68 7 25 40 MAXIMUM INPUT VOLTAGE(V) H 10 0µ H 15 0µ 22 8 40 35 30 15 H H 0µ 0µ 33 10 100 90 80 MAXIMUM INPUT VOLTAGE(V) H 0µ H 68 0µ 40 20 15 47 MAXIMUM INPUT VOLTAGE(V) Input : 12V Output : 5V @3A VOUT = VREF ( 1+ R2 ) R1 where VREF = 1.23V R1 can be between 1k and 5k. (For best temperature coefficient and stability with time, use 1% metal film resistors) R2 = R1 ( VOUT -1) VREF EXAMPLE (Adjustable Output Voltage Versions) Given: VOUT = 10V VIN(Max) = 25V ILOAD(Max) =3A F = 52kHz 1. Programming Output Voltage (Selecting R1 and R2) R2 VOUT = 1.23 (1+ ) Select R1 = 1k R1 VOUT 10V R2 = R1( -1) = 1k ( -1) 1.23V VREF R2 = 1k (8.13 - 1) = 7.13k, closest 1% value is 7.15k A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS Inductor Selection by Manufacturer's Part Numbe. Inductor Value 3L Electronic Corp. 47µH TC-470M-3A-5026 68µH TC-680M-3A-5026 100µH TC-101M-3A-5026 150µH TC-151M-3A-8026 220µH TC-221M-3A-8026 330µH TC-331M-3A-8026 470µH TC-471M-3A-8026 680µH TC-681M-3A-8026 1000µH TC-102M-3A-9426 1500µH TC-152M-3A-9426 3L Electronic Corp., + 886(2) 86659999 Website : www.3lcoil.com.tw Capacitor Selection by Manufacturer's Part Number Capacitor Value Nippon ChemiI - Con Corp. 100µF KY50VB100-MH11 220µF KY50VB220-MJ16 470µF 680µF KY50VB470-MJ30 KY50VB680-MK30 1000µF KY50VB1000-ML25 GM7130 Nippon Chemi-Con Corp. , + 81(3)54367628 Website : www.chemi-con.co.jp 11 A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS TO-220-5 PACKAGE OUTLINE DIMENSIONS 9.97 ± 0.20 4.50 ± 0.20 9.90 ± 0.20 3.60 ± 0.20 8.0 ± 0.20 8.70 2.80 ± 0.10 7.0 +0.1 1.30 -0.05 4.60 8.40 15.90 ± 0.20 3.70 ± 0.20 1.2 3° 7.0 ± 0.20 9.20 ± 0.20 28.78 MAX 1.50 DP0.20 9.20 ± 0.20 1.30 ± 0.10 1.70 3° 3° 13.08 ± 0.20 3-R0.2 5-0.8 ± 0.10 +0.1 0.50 -0.05 2.40 ± 0.20 1.7(TYP) 3° 3° 2 - R 0.3 Unit: mm 10.00 ± 0.20 TO-263-5 PACKAGE OUTLINE DIMENSIONS 9.90 4.50 1.30 15° 0.40 1.20 3° 4.60 1.50 DP0.20 9.20 Pad Layout 0.10 15.3 3° 2.00 1.20 4.90 17.5 9 2.40 R0.30 0.75 R0.30 1.7 2.54 0.80 GM7130 0.40 12 11.5 0.50 1.70 TYP (1.70 ± 0.20) 3.8 10.0 8.0 7.0 4.40 1.07 1.75 3° 3° R 0.3 0.90 R 0.45 7.2 Units: mm 9.20 15.30 10.00 4.90 Unit: mm A Power Management GM7130 A MICROELECTRONICS 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS TO-220-5B PACKAGE OUTLINE DIMENSIONS 0.18 ± 0.004 4.57 ± 0.1 0.4 ± 0.006 10.16 ± 0.15 0.108 ± 0.006 2.74 ± 0.15 0.05 ± 0.004 1.27 ± 0.1 0.151 ± 0.002 3.84 ± 0.05 0.05 ± 0.004 1.27 ± 0.1 0.4985 ± 0.0075 12.66 ± 0.2 0.032 ± 0.004 0.81 ± 0.1 0.9645 ± 0.0075 24.5 ± 0.2 0.138 ± 0.004 3.5 ± 0.1 0.220 TYP 1.700 TYP 0.268 ± 0.004 0.68 ± 0.1 0.996 ± 0.008 25.3± 0.2 0.105 ± 0.006 2.76± 0.15 0.1535 ± 0.0035 3.9 ± 0.1 0.213 ± 0.004 5.4 ± 0.1 0.358 ± 0.008 9.1± 0.2 0.173 ± 0.006 4.4 ± 0.15 0.331 ± 0.006 8.4 ± 0.15 0.0165 ± 0.0045 0.42 ± 0.11 ( Inches ) mm ORDERING NUMBER GM 7130 A TB5 T Shipping R: Tape & Reel T: Tube Gamma Micro. Circuit Type Output Voltage A: Adj, 3.3: 3.3V 5.0: 5.0V, 12: 12V 15: 15V GM7130 Package TA5: TO-263-5 TB5: TO-220-5 TB5B: TO-220-5B 13 A A MICROELECTRONICS Power Management GM7130 GM7130 3A STEP-DOWN VOLTAGE SWITCHING REGULATORS 14