Fast Linear Voltage Regulators

NCP630 3.0 A Fast Linear Voltage Regulators The NCP630 is a low dropout positive voltage regulator that is capable of providing a guaranteed output current of 3.0 A with a maximum dropout voltage of 1.25 V at 3.0 A over temperature. The fast turn on time allows step changes in loads commonly found in low voltage microprocessor applications. The NCP630 is currently offered as an adjustable output version that can be programmed down to 1.2 V with two external resistors and as a fixed output version at 3.47 V. On chip trimming adjusts the reference/output voltage to within "1.5% accuracy. Internal protection features consist of output current limiting and thermal shutdown. NCP630 is available in D2PAK package. Features 1 5 NCP630A Tab = Ground Pin 1. Shutdown 2. Vin 3. Ground 4. Vout 5. Adj x A WL Y WW G NCP630G Tab = Ground Pin 1. Shutdown 2. Vin 3. Ground 4. Vout 5. Sense http://onsemi.com MARKING DIAGRAM D2PAK D2T SUFFIX CASE 936A NC P630xD2T AWLYWWG • • • • • • • • • • • • Output Current of 3.0 A 1.25 V Maximum Dropout Voltage at 3.0 A Over Temperature Voltage on Shutdown Pin is TTL Compatible Reference/Output Voltage Trimmed to "1.5% Current Limit Protection Thermal Shutdown Protection −40°C to 125°C Junction Temperature Range Pb−Free Packages are Available www.DataSheet4U.com Applications Microprocessor Power Supplies DSP Power Supplies SMPS Post Regulation Battery Chargers = Specific Device Code = Assembly Location = Wafer Lot = Year = Work Week = Pb−Free Package ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 9 of this data sheet. INPUT Cin 68 mF − + Shutdown Vin Vout R2 + Vout @3A INPUT Cin 68 mF − + Shutdown Vin Vout + Vout @3A NCP630A ADJ GND Co 33 mF NCP630G SENSE GND Co 33 mF R1 10 kW R2 + R1 Vout *1 1.216 Figure 1. Typical Application Circuit for NCP630A Figure 2. Typical Application Circuit for NCP630G © Semiconductor Components Industries, LLC, 2005 1 June, 2005 − Rev. 5 Publication Order Number: NCP630/D NCP630 MAXIMUM RATINGS Rating Input Voltage (Note 1) Shutdown Voltage Output Voltage Output Short Circuit Duration (Note 2) Power Dissipation and Thermal Characteristics Case 936F (D2PAK) Power Dissipation (Note 2) Thermal Resistance, Junction−to−Ambient Thermal Resistance, Junction−to−Case Operating Junction Temperature Range Storage Temperature Range Lead Soldering Temperature @ 260°C Symbol Vin Shutdown Vout − Value 12 −0.3 to Vin + 0.3 −0.3 to Vin + 0.3 Infinite Unit V V V − PD RqJA RqJC TJ Tstg Tsolder Internally Limited 45 5.0 −40 to 125 −55 to 150 10 W °C/W °C/W °C °C sec Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. 1. This device series contains ESD protection and exceeds the following tests: Human Body Model JESD 22−A114−B Machine Model JESD 22−A115−A 2. The maximum package power dissipation is: *T T J(max) A P + D R qJA PIN FUNCTION DESCRIPTION Pin No. 1 NCP630A Shutdown NCP630G Shutdown Description This input is used to place the NCP630 into shutdown mode. The NCP630 is active when a voltage greater than 2.0 V is applied. The NCP630 will be placed into a shutdown mode when a voltage less than 0.8 V is applied. If left unused then connect the pin high. Positive power supply input voltage Power supply ground Regulated output voltage This pin is to be Connected to the Rsense resistors on the output. It maintains 1.216 V between itself and ground. Refer to Figure 1 for equation. This pin is to be connected near the load for better regulation. 2 3, Tab 4 5 5 Vin Ground Vout Adj − Vin Ground Vout − Sense http://onsemi.com 2 NCP630 ELECTRICAL CHARACTERISTICS (Cin = 68 mF, Cout = 33 mF, Vin = Vout + 1.5 V, Iout = 10 mA, for typical value TJ = 25°C, for min and max values TJ = −40°C to 125°C unless otherwise noted.) Characteristic NCP630A Reference Voltage (Vin = Vout + 1.5 V to 7.0 V, Iout = 10 mA to 3.0 A, TJ = 25°C) (Vin = Vout + 1.5 V to 7.0 V, Iout = 10 mA to 3.0 A, TJ = −40°C to 125°C) Line Regulation (Notes 3 and 4) (Vin = Vout + 1.5 V to 7.0 V, TJ = 25°C) (Vin = Vout + 1.5 V to 7.0 V, TJ = −40°C to 125°C) Load Regulation (Notes 3 and 4) (Iout = 10 mA to 3.0 A, TJ = 25°C) (Iout = 10 mA to 3.0 A, TJ = −40°C to 125°C) Dropout Voltage (Measured at Vout – 2%) (Iout = 300 mA) (Iout = 3.0 A) Ground Pin Current in Normal Mode (Iout = 300 mA) (Iout = 3.0 A) Ground Pin Current in Shutdown Mode (Vshutdown = 0.8 V) Peak Output Limit Short Current Limit (Note 5) Thermal Shutdown Shutdown Input Threshold Voltage (Voltage Increasing, Output Turns On, Logic High) (Voltage Decreasing, Output Turns Off, Logic Low) Turn−off Delay, Iout = 3.0 A Turn−on Delay, Iout = 3.0 A Shutdown Input Low Current (VShutdown = 0.8 V), (Negative current flows out of pin) Shutdown Input High Current (VShutdown = 2.0 V), (Negative current flows out of pin) Ripple Rejection (Cout = 100 mF, f = 1.0 kHz) Output Noise Density (f = 120 Hz) Output Noise Voltage (f = 20 Hz – 100 kHz) Vadj 1.198 1.180 Regline − − Regload − − Vin−Vout − − IGnd − − IGnd − Iout ISC − Vtth(shutdown) 2.0 − TD(off) TD(on) IIL IIH RR − − Vn − 210 − − 85 0.6 − − mV Hz − − −10 −10 − − 20 25 −5.0 −4.5 − 0.8 − − −1.0 −1.0 ms ms mA mA dB 3.0 − − 15 6.0 6.5 165 50 − − − A A °C V 0.4 1.0 1.0 2.0 mA 0.75 1.0 1.0 1.25 mA 0.01 0.06 − − V 0.02 0.06 − − % 1.216 − 1.234 1.253 % V Symbol Min Typ Max Unit mVrms 3. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 4. Line regulation is defined as the change in output voltage for a change in input voltage. Load regulation is defined as the change in output voltage for a change in output load current at a constant temperature. The limits for line and load regulation are contained within the reference voltage specification, Vadj. Typical numbers are included in the specification for line and load regulation. 5. The short circuit limit is for device protection. Maximum output current is guaranteed to be greater or equal to 3.0 A with a 6.0 A typical as listed in the peak output limit specification. http://onsemi.com 3 NCP630 ELECTRICAL CHARACTERISTICS (Cin = 68 mF, Cout = 33 mF, Vin = Vout + 1.5 V, Iout = 10 mA, for typical value TJ = 25°C, for min and max values TJ = 0°C to 125°C unless otherwise noted.) Characteristic NCP630G Output Voltage (Vin = 5.0 V to 7.0 V, Iout = 10 mA to 3.0 A, TJ = 25°C) (Vin = 5.0 V to 7.0 V, Iout = 10 mA to 3.0 A, TJ = 0°C to 125°C) Line Regulation (Notes 6 and 7) (Vin = 5.0 V to 7.0 V, TJ = 25°C) (Vin = 5.0 V to 7.0 V, TJ = 0°C to 125°C) Load Regulation (Notes 6 and 7) (Iout = 10 mA to 3.0 A, TJ = 25°C) (Iout = 10 mA to 3.0 A, TJ = 0°C to 125°C) Dropout Voltage (Measured at Vout – 2%) (Iout = 300 mA) (Iout = 3.0 A) Ground Pin Current in Normal Mode (Iout = 300 mA) (Iout = 3.0 A) Ground Pin Current in Shutdown Mode (Vshutdown = 0.8 V) Peak Output Limit Short Current Limit (Note 8) Thermal Shutdown Shutdown Input Threshold Voltage (Voltage Increasing, Output Turns On, Logic High) (Voltage Decreasing, Output Turns Off, Logic Low) Turn−off Delay, Iout = 3.0 A Turn−on Delay, Iout = 3.0 A Shutdown Input Low Current (Vin = 0.8 V), (Negative current flows out of pin) Shutdown Input High Current (Vin = 2.0 V), (Negative current flows out of pin) Ripple Rejection (Cout = 100 mF, f = 1.0 kHz) Output Noise Density (f = 120 Hz) Output Noise Voltage (f = 10 Hz – 100 kHz) Vout 3.418 3.383 Regline − − Regload − − Vin−Vout − − IGnd − − IGnd − Iout ISC − Vtth(shutdown) 2.0 − TD(off) TD(on) IIL IIH RR − − Vn − 210 − − 85 0.6 − − mV Hz − − −10 −10 − − 20 25 −5.0 −4.5 − 0.8 − − −1.0 −1.0 ms ms mA mA dB 3.0 − − 26 5.0 5.0 165 50 − − − A A °C V 0.4 1.0 1.0 2.0 mA 0.75 1.0 1.0 1.25 mA 0.01 0.06 − − V 0.02 0.06 − − % 3.470 − 3.522 3.557 % V Symbol Min Typ Max Unit mVrms 6. Low duty cycle pulse techniques are used during testing to maintain the junction temperature as close to ambient as possible. 7. Line regulation is defined as the change in output voltage for a change in input voltage. Load regulation is defined as the change in output voltage for a change in output load current at a constant temperature. The limits for line and load regulation are contained within the output voltage specification, Vout. Typical numbers are included in the specification for line and load regulation. 8. The short circuit limit is for device protection. Maximum output current is guaranteed to be greater or equal to 3.0 A with a 5.0 A typical as listed in the peak output limit specification. http://onsemi.com 4 NCP630 TYPICAL CHARACTERISTICS 3.480 VOUT, OUTPUT VOLTAGE (V) 3.475 3.470 3.465 3.460 3.455 3.450 −40 ISC, SHORT CIRCUIT CURRENT LIMIT (A) 9 8 7 6 5 4 3 2 1 0 −40 −20 0 20 40 60 80 100 120 −20 0 20 40 60 80 100 120 TA, AMBIENT TEMPERATURE (°C) TA, AMBIENT TEMPERATURE (°C) Figure 3. Output Voltage versus Temperature 1.2 IGND, GROUND CURRENT (mA) 1 0.8 IOUT = 300 mA 0.6 0.4 0.2 0 −40 IOUT = 3.0 A 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0.2 0 −40 Figure 4. Short Circuit Current Limit versus Temperature VIN = VOUT + 1.5 V VSD = VIN VIN − VOUT, DROPOUT VOLTAGE (V) IOUT = 3.0 A IOUT = 300 mA −20 0 20 40 60 80 100 120 −20 0 20 40 60 80 100 120 TA, TEMPERATURE (°C) TA, AMBIENT TEMPERATURE (°C) Figure 5. Dropout Voltage versus Temperature Figure 6. Ground Current versus Temperature 40 VOUT, OUTPUT VOLTAGE (V) IGND, GROUND CURRENT