GM7110-15TA5R

MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR Description GM7110 of regulators provides all the active functions for a step- down (buck) switching regulator, and drives 1A load with excellent line and load regulation. GM7110 is available in fixed output volt ages 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. GM7110 high-efficiency replacement for popular three-terminal linear regulators, and is requiring a smaller heat sink or even no heat sink. GM7110 performs well with standard inductors from several manufacturers, and simplifying the design of switch-mode power supplies. GM7110 guarantees ±4% tolerance on output voltage within specified input voltages and output load conditions, and ±10% on the oscillator frequency. External shutdown is included 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. Features 3.3V, 5V, 12V, 15V and Adjustable output versions Adjustable version output voltage range 1.23V to 37V ±4% max over line and load conditions 1A output current Requires Only 4 External Components High Efficiency TTL shutdown capability and low power standby mode Thermal shutdown, current limit protection Uses standard inductors 52 kHz fixed frequency internal oscillator Application Pre-regulator for linear regulators High-efficiency step-down buck regulator On-card/ board switching regulators Positive to negative converter (buck-boost) TYPICAL APPLICATION 7V - 40V Unregulated DC Input 100 µF +VIN 1 CIN + GM7110-5.0 3 GND ON / OFF 5 Output 2 L1 330 µH D1 1N5819 + COUT 330 µF 5.0V, 1A Regulated Output www.gammamicro.com GM7110 V0.1 1 Feedback 4 GM 431 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR MARKING INFORMATION & PIN CONFIGURATIONS TO-220- 5 TO-220- 5B TO-252-5 (DPAK) TO-263-5(D PAK) 2 GM7110 VVAYWW GM7110 VVAYWW GM7110 VVAYWW GM7110 VVAYWW VIN Output Ground VIN Output ON/OFF Feedback Ground ON/OFF Feedback VIN Output Ground ON/OFF Feedback VIN Output Ground ON/OFF Feedback 1 23 45 V V, VVV A Y WW = Output Voltage (33=3.3V , 120=12V,A=Adj) = Assembly Location = Year = Weekly ORDERING INFORMATION Ordering Number GM7110-ATB5T GM7110-ATB5BT GM7110-ATA5R GM7110-ATA5T GM7110-3.3TB5T GM7110-3.3TB5BT GM7110-3.3TA5R GM7110-3.3TA5T GM7110-5.0TB5T GM7110-5.0TB5BT GM7110-5.0TA5R GM7110-5.0TA5T G M7110-5.0TC5T GM7110-5.0TC5R GM7110-12TB5T GM7110-12TB5BT GM7110-12TA5R GM7110-12TA5T Output Voltage Adj Adj Adj Adj 3.3 3.3 3.3 3.3 5.0 5.0 5.0 5.0 5.0 5.0 12 12 12 12 15 15 15 15 Package TO-220-5 TO-220-5B TO-263-5 TO-263-5 TO-220-5 TO-220-5B TO-263-5 TO-263-5 TO-220-5 TO-220-5B TO-263-5 TO-263-5 TO-252-5 TO-252-5 TO-220-5 TO-220-5B TO-263-5 TO-263-5 TO-220-5 TO-220-5B TO-263-5 TO-263-5 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 800 Units/ Tape & Reel 50 Units / Tube 80 Units/ Tube 2,500 Units/ Tape & Reel 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 GM7110 GM7110-15TB5T GM7110-15TB5BT GM7110-15TA5R GM7110-15TA5T * TB5B: Bent and Staggered Leads of TO-220 package ** For detail Ordering Number identification, please see last page. 2 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR ABSOLUTE MAXIMUM RATINGS PARAMETER Maximum Supply Voltage ON/OFF Pin Input Voltage Output Voltage to Ground (Steady State) Power Dissipation Storage Temperature Range Maximum Junction Temperature Lead Temperature (Soldering, 10 sec.) -0.3 VALUE 45 V VIN -1.0 Internally Limited -65 to + 150 +150 +260 UNIT V V V - °C °C °C RECOMMENDED OPERATING CONDITIONS PARAMETER Temperature Range Supply Voltage VALUE -40 TJ 40 125 UNIT °C V BLOCK DIAGRAM Unregulated DC Input V IN 1 4 Feedback Internal Regulator ON/OFF 5 ON/OFF + CIN R2 + Fixed Gain Error AMP Comparator + Driver 1 AMP Switch Output 1.0K R1 - L1 2 1.23V Band-Gap Reference D1 52kHz Oscillator Reset Thermal Shutdown Current Limit + VOUT 3 GND C out L O A D VOUT 3.3V, R2 = 1.7K 5V, R2 = 3.1K 12V, R2 = 8.84K 15V, R2 = 11.3K For ADJ. Version R1 = Open, R2 = 0W GM7110 3 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR ELECTRICAL CHARACTERISTICS: GM7110-3.3 (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 Efficiency Conditions VIN = 12V, ILOAD = 0.2A 4.75V VIN 40V, 0.2A ILOAD 1A VIN = 12V, ILOAD = 1A Symbol VOUT VOUT h Min 3.234 3.168/3.135 - Typ 3.3 3.3 75 Max 3.366 3.432/3.465 - Unit V V % ELECTRICAL CHARACTERISTICS: GM7110-5.0 (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 Efficiency Conditions VIN = 12V, ILOAD = 0.2A 8V VIN 40V, 0.2A ILOAD 1A VIN = 12V, ILOAD = 1A Symbol VOUT VOUT h Min 4.900 4.800/4.750 - Typ 5.0 5.0 77 Max 5.100 5.200/5.250 - Unit V V % ELECTRICAL CHARACTERISTICS: GM7110-12 (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 Efficiency Conditions VIN = 25V, ILOAD = 0.2A 15V VIN 40V, 0.2A ILOAD 1A VIN = 15V, ILOAD = 1A Symbol VOUT VOUT h Min 11.76 11.52/11.40 - Typ 12.0 12.0 88 Max 12.24 12.48/12.60 - Unit V V % ELECTRICAL CHARACTERISTICS: GM7110-15 (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Parameter Feedback Voltage Feedback Voltage Efficiency Conditions VIN = 30V, ILOAD = 0.2A 18V VIN 40V, 0.2A ILOAD 1A VIN = 18V, ILOAD = 1A Symbol VOUT VOUT h Min 14.70 14.40/14.25 - Typ 15.0 15.0 88 Max 15.30 15.60/15.75 - Unit V V % ELECTRICAL CHARACTERISTICS: GM7110-ADJ (Specifications with standard type face are for TJ = 25°C, and those with boldface type apply over full Operating Temperature Range) Parameter Conditions VIN = 12V, ILOAD = 0.2A, VOUT = 5V 8V VIN 40V, 0.2A ILOAD 1A VOUT = 5V VIN = 12V, ILOAD = 1.0A, VOUT=5V Symbol VOUT VOUT h Min 1.217 1.193/1.180 - Typ 1.230 1.230 77 Max 1.243 1.267/1.280 - Unit V V % GM7110 4 Feedback Voltage Feedback Voltage Efficiency MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR 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 Conditions VOUT = 5V (Adjustable Version Only) (Note 11) IOUT = 1A (Notes 4) (Note 5) (Note 4, 11) (Notes 6, 7) Output = 0 V Output = -1V Symbol IFB FO VSAT TDC ICL IOL IQ ISTBY qJA qJA qJC qJC qJA VIH VIL VIH IIL Min 47 / 42 93 1.7 / 1.3 2.2 / 2.4 - Typ 50 52 0.9 98 2.2 7.5 5 50 65 45 2 6 37 1.4 1.2 12 0 Max 100 / 500 58 / 63 1.2 / 1.4 3.0 / 3.2 2 30 10 200 1.0 / 0.8 30 10 Unit nA kHz V % A mA mA mA (Note 6) ON/OFF Pin = 5V (OFF) TO-220 Package, Junction to Ambient (Note 8) TO-220 Package, Junction to Ambient (Note 8) Thermal Resistance TO-220,TO-263, Package, Junction to Case TO-252 Package, Junction to Case TO-263 Package, Junction to Ambient (Note 10) °C/W ON/OFF Pin Logic Input Level VOUT=0V VOUT = Nominal Output Voltage ON/OFF Pin = 5V (OFF) V V mA mA ON/OFF Pin Input Current ON/OFF Pin = 0V (ON) GM7110 5 Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indic ate 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 Statistics 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 GM7110 is used as shown in the Figure 2 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. 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 selfprotection feature lowers the Average power dissipation of Gm7110 By lowering the minimum duty cycle from 5% down to approximately 2%. MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR 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 GM7110, to keep the sensitive feedback wiring short. Figure 1(a). Fixed Output Voltage Versions +VIN 1 GM 7110 FIXED OUTPUT ON/OFF 5 Feedback 4 Output 2 L1 330 µH + L O A D VOUT GND 3 VIN Unregulated DC Input + CIN 100 µF D1 MBR360 COUT 330 µF CIN - 100 µF, 75V, Aluminum Electrolytic COUT - 330 µF, 25V, Aluminum Electrolytic D1 - Schottky, MBR360 L1 - 330 µH, 3L Electronic Corp. TC-331M-1.0A- 5026 R1 - 2k, 0.1% GM7110 R2 - 6.12k, 0.1% 6 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR Figure 1(b).Adjustable Output Voltage Versions Feedback +VIN 1 7V - 40V Unregulated DC Input GND 3 + CIN 100 µF ON/ OFF 5 D1 MBR360 + COUT 330 µF 4 GM7110-ADJ Output 2 L1 330 µH R2 L O A D VOUT=5.0V R1 VOUT = VREF ( 1 + VOUT R2 = R1 ( V -1) REF R2 ) R1 where VREF = 1.23V, R1 between 1k and 5k. Typical Performance Characteristics Figure 2. Switch Saturation Voltage 1.2 INPUT-OUTPUT DIFFERENTIAL (V) SATURATION VOLTAGE (V) 2.0 DVOUT = 5% RIND = 0.2W 1.5 ILOAD = 1A Figure 3. Dropout Voltage 1.0 TJ = - 55°C TJ = - 25°C 0.8 TJ = 150°C 0.6 1.0 ILOAD = 200mA 0.5 0.4 0 0.2 0.4 0.6 0.8 1.0 SWITCH CURRENT (A) 0 -75 -50 -25 0 25 50 75 100 125 150 JUNCTION TEMPERATURE (°C) GM7110 7 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR Typical Performance Characteristics Figure 4. Quiescent Current 20 18 QUIESCENT CURRENT (mA) 16 14 12 10 8 6 4 0 ILOAD = 200mA ILOAD = 1A VOUT = 5V Measured at Ground Pin TJ = 25°C Figure 5. Maximum Power Dissipation(TO-263) POWER DISSIPATION (W) 4 3 2 1 0 qJA = 32°C/ W qJA = 37°C/ W qJA = 50°C/ W qJA = 73°C/ W 10 20 30 40 50 60 0 INPUT VOLTAGE (V) 10 20 30 40 50 60 70 80 90 100 AMBIENT TEMPERATURE (°C) Figure 6. Minimum Operating Voltage 5.0 4.5 4.0 INPUT VOLTAGE (V) CURRENT(µA) 3.5 3.0 2.5 2.0 1.5 1.0 0.5 VOUT = 1.23V ILOAD = 120 mA -25 0 25 50 75 100 125 JUNCTION TEMPERATURE (°C) Adjustable Version Only Figure 7. ON / OFF Pin Current (Sinking) 8 7 6 5 4 3 2 1 0 -40°C VIN = 40V TJ 125°C 0 -50 0 5 10 15 20 25 ON / OFF PIN VOLTAGE (V) GM7110 8 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR TO-220-5 PACKAGE OUTLINE DIMENSIONS 9.97 ± 0.20 9.90 ± 0.20 3.60 ± 0.20 1.30 ± 0.10 1.70 1.50 DP0.20 9.20 ± 0.20 3.70 ± 0.20 4.60 15.90 ± 0.20 3° 7.0 ± 0.20 28.78 MAX 9.20 ± 0.20 3° 3° 8.70 2.80 ± 0.10 4.50 ± 0.20 8.0 ± 0.20 +0.1 1.30 -0.05 7.0 8.40 1.2 13.08 ± 0.20 3-R0.2 5-0.8 ± 0.10 0.50 -0.05 +0.1 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 0.40 15° 1.20 3° 4.60 1.50 DP0.20 9.20 4.50 1.30 Pad Layout 15.3 2.00 0.10 3° 17.5 9 3.8 1.7 11.5 1.20 4.90 0.75 R0.30 2.40 R0.30 2.54 0.50 1.70 TYP (1.70 ± 0.20) 0.80 0.40 1.75 10.0 8.0 7.0 4.40 1.07 3° R 0.3 3° 0.90 R 0.45 7.2 9.20 15.30 10.00 Units: mm 4.90 Unit: mm GM7110 9 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR 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 0.032 ± 0.004 0.81 ± 0.1 0.138 ± 0.004 3.5 ± 0.1 0.9645 ± 0.0075 24.5 ± 0.2 0.4985 ± 0.0075 12.66 ± 0.2 0.358 ± 0.008 9.1± 0.2 0.996 ± 0.008 25.3± 0.2 0.105 ± 0.006 2.76± 0.15 0.213 ± 0.004 5.4 ± 0.1 0.1535 ± 0.0035 3.9 ± 0.1 0.220 TYP 1.700 TYP 0.268 ± 0.004 0.68 ± 0.1 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 TO-252-5 PACKAGE OUTLINE DIMENSIONS 0.256 ± 0.004 6.5 ± 0.1 0.024 Ref 0.600 Ref 0.212 ± 0.003 5.375 ± 0.075 29° ± 0.5° 0.02 ± 0.001 0.51 ± 0.02 Pad Layout 7 0.24 ± 0.004 6.10 ± 0.1 0.2835 ± 0.0035 7.20 ± 0.1 0.039 ± 0.002 1.0 ± 0.05 0.39 ± 0.008 9.9 ± 0.2 7 3 0.9 3.81 1.27 0.025 ± 0.002 0.64 ± 0.05 0.06 ± 0.004 1.525 ± 0.1 6.25 GM7110 0.0235 ± 0.0015 0.60 ± 0.025 0.050BSC 1.270BSC 0.003 ± 0.002 0.07 ± 0.05 Units: mm 0.091 ± 0.002 2.3 ± 0.05 ( Inches ) mm 10 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR ORDERING NUMBER GM 7110 A TB5 T Gamma Micro. Shipping R: Tape & Reel T: Tube Circuit Type Package TA5: TO-263-5 TB5: TO-220-5 TC5: TO-252-5 Output Voltage A: Adj, 3.3: 3.3V 5.0: 5.0V, 12: 12V 15: 15V GM7110 11 MICROELECTRONICS A A Power Management GM7110 1A STEP-DOWN VOLTAGE SWITCHING REGULATOR 12 GM7110