MIC29152S/TR

MIC29150/1/2 Low-Dropout Regulators General Description Features The MIC2915X(-XX) are high-current, high-accuracy, lowdropout voltage regulators. Using the process with a PNP pass element, these regulators feature 350mV (full load) dropout voltages and very low ground current. These devices also find applications in lower current, low-dropout critical systems, where their tiny dropout voltage and ground current values are important attributes. The MIC2915X(-XX) are fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, over temperature operation, positive and negative transient voltage spikes. Five-pin fixed voltage versions feature a logic level ON/OFF control and an error flag, which signals whenever the output falls out of regulation. On the MIC29151(-XX) and MIC29152 the EN (Enable) pin may be tied to VIN, if it is not required for the ON/OFF control. The MIC2915X(-XX) are available in 3- and 5-pin TO-220, TO263 and TO-252 packages. The Output Voltage, (-XX), may be 1.5V, 1.8V, 2.5V, 2.85V, 3V, 3.3V, 5V, 8V, 9V, 12V. • High-current capability.........................1.5A • Low dropout voltage ...........................350mV • Low ground current • 1% initial accuracy • Extremely fast transient response • Reverse-battery and “load dump” protection • Zero-current shutdown mode (5-pin versions) • Error flag signals Output Out-of-Regulation (5-Pin versions) • Fixed voltage and adjustable versions Applications • • • • • Battery-powered equipment High-efficiency “green” computer systems Automotive electronics High-efficiency linear power supplies High-efficiency post-regulator for switching supply PIN Configuration TO220-3 MIC29150-XX TO263-3 MIC29150-XX TO220-5 MIC29151-XX MIC29152 TO263-5 MIC29151-XX MIC29152 Pinout On all the devices, the Tab is grounded. MIC29150-XX, three-terminal devices: Pin 1 = IN (Input), 2 = GND (Ground), 3 = OUT (Output) MIC29151-XX, five-terminal fixed voltage devices Pin 1 = EN (Enable), 2 = IN (Input), 3 = GND (Ground), 4 = OUT (Output), 5 = FLAG (Flag) MIC29152 , adjustable version with ON/OFF control Pin 1 = EN (Enable), 2 = IN (Input), 3 = GND (Ground), 4 = OUT (Output), 5 = ADJ (Adjust) http://www.hgsemi.com.cn  1 2019 AUG MIC29150/1/2 Absolute Maximum Ratings Operating Ratings Power Dissipation internally-limited o Lead Temperature (soldering, 5 seconds) 260 C o o Storage Temperature Range –65 C to +150 C Input Supply Voltage –20V to +30V Operating Junction Temperature Operating Input Voltage o o –40 C to +125 C 2.3V to 26V Electrical Characteristics o All measurements at TJ=25 C, IO=10mA, VIN=VOUT+1V, unless otherwise noted. Bold values are guaranteed across the operating temperature range. Adjustable versions are programmed to 5.0V. Parameter Output Voltage Line Regulation Load Regulation Vo T Dropout Voltage Ground Current IGNDDO, GND Pin Current at Dropout Current Limit Reference, MIC29152 Reference Voltage Reference Voltage ADJ Pin Bias Current Conditions IO=10mA 10mA IO 1.5A, (VOUT+1V) VIN 26V IO=10mA, (VOUT+1V) VIN 26V VIN=VOUT+5V, 10mA IOUT 1.5A (Note 1) Output Voltage Temperature Coefficient (Note 2) VOUT=-1%, (Note 1, 3) IO=100mA IO=750mA IO=1.5A (Note 1, 4) IO=750mA, VIN=VOUT+1V IO=1.5A VIN=0.5V less than specified VOUT, IOUT=10mA (Note 5) MIC29150 VOUT=0V (Note 1) Min -1 -2 0.06 0.2 20 100 250 350 8 Units % % % % o ppm/ C 200 mV 600 20 mA 3.5 A 1.240 1.252 1.265 1.277 80 120 V V nA O 20 ppm/ C 0.1 nA/ C 0.01 VIN=0.5V less than specified VOUT, IOL=250 A mA 2.1 20 (Note 2) Reference Voltage Temperature Coefficient ADJ Pin Bias Current Temperature Coefficient Flag Output (Error Comparator), MIC29151-XX Output Leakage Current VOH=26V Output Low Voltage Max 1 2 0.5 1 100 22 2 1.228 1.215 1.203 (Note 6) Typ 220 O 1.00 2.00 300 400 A mV (Note 5) (Note 5) Upper Threshold Voltage (Note 5) Lower Threshold Voltage (Note 5) Hysteresis EN Input, MIC29151-XX, MIC29152 Input Logic Voltage Low (OFF) High (ON) EN Pin Input Current VEN=26V http://www.hgsemi.com.cn  % of VOUT % of VOUT % of VOUT 0.8 V 600 750 2.5 5 A 1 2.4 30 VEN=0.8V Regulator Output Current Shutdown 99.2 93 (Note 7) 10 A A 500 2 2019 AUG MIC29150/1/2 Notes: Note 1: Employ pulse-testing procedures to minimize temperature rise. Note 2: Output Voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note 3: Dropout Voltage is defined as the input-to-output differential when the Output Voltage drops to 99% of its nominal value with VOUT+1V applied to VIN. For Output Voltages below 2.3V the Dropout Voltage is the input-to-output voltage differential with the minimum input voltage being 2.3V. The minimum input operation voltage is 2.3V. Note 4: GND pin current is the regulator quiescent current. The total current drawn from the source is a sum of the load current plus the GND pin current. Note 5: For specified VOUT ≥2.5V. Note 6: VREF VOUT (VIN-1V), 2.3V VIN 26V, 10mA IL 1.5A, TJ TJ MAX. Note 7: VEN 0.8V and VIN 26V, VOUT=0 Note 8: When used in dual supply systems, where the regulator load is returned to a negative supply, the output voltage must be diode-clamped to ground. Block Diagram IN OUT R1* FLAG ADJ** EN R2* GND  *Feedback network in fixed versions only. **Adjustable version only. MIC29152 Typical Applications 5V 5% MIC29151-3.3 3.3V 1% @1.5A + 47F VIN VOUT R1 + R2 Fig.1. Fixed output voltage VOUT=1.240V x [1+(R1/ R2)]  Fig.2. Adjustable output voltage configuration. For best results, the total series resistance should be small enough to pass the minimum regulator load current http://www.hgsemi.com.cn  3 2019 AUG MIC29150/1/2 Application information The MIC2915X(-XX) are high performance low-dropout voltage regulators suitable for all moderate to high-current voltage regulator applications. Their 350mV dropout voltage at full load makes them especially valuable in batterypowered systems and as high-efficiency noise filters in postregulator applications. Unlike older NPN-pass transistor designs, dropout performance of the PNP output of these devices is limited merely by the low VCE saturation voltage. The MIC2915X (-XX) family of regulators is fully protected from the damage due to fault conditions. Current limiting is provided. This limiting is linear; output current under overload conditions is constant. Thermal shutdown disables the device o when the die temperature exceeds the 125 C maximum safe operating temperature. The Transients protection allows the device survival even when the input voltage spikes between –20V and +30V. When the input voltage exceeds about 28V to 33V, the overvoltage sensor temporarily disables the regulator. IN OUT VIN +  GND Minimum Load Current The MIC29150 regulators are specified between finite loads. If the output current is too small, leakage currents dominate and the output voltage rises. The 5mA minimum load current swamps any expected leakage current across the operating temperature range. V IN  R1 V OUT  + R2 V + OUT = 1.240V x [1 + (R1/R2)] V OUT Fig.4. Adjustable Regulator with Resistors Fig.3. Linear regulators require only two capacitors for operation. Adjustable Regulator Design Thermal Design The linear regulators are simple to use. The most complicated design parameters to consider are thermal characteristics. Thermal design requires the following application-specific parameters: • Maximum ambient temperature, TA • Output Current, IOUT • Output Voltage, VOUT • Input Voltage, VIN First, we calculate the power dissipation of the regulator from these numbers and the device parameters from this datasheet. P =I (1.01V -V ), D OUT IN OUT . where the ground current is approximated by 1% of I OUT Then the heat sink thermal resistance is determined with this formula: SA= TJ MAX -TA -( JC + CS), PD where TJ MAX O 125 C and CS O is between 0 and 2 C/W. Capacitor Requirements For stability and minimum output noise, a capacitor on the regulator output is necessary. The value of this capacitor is dependent upon the output current; lower currents allow smaller capacitors. MIC2915X(-XX) regulators are stable with the 10 F minimum capacitor values at a full load. Where the regulator is powered from a source with a high AC impedance, a 0.1 F capacitor connected between Input and GND is recommended. This capacitor should have good characteristics to above 250kHz. The adjustable regulator version, MIC29152 , allows one to program the output voltage anywhere between 1.25V and 26V (maximum operating rating of the family). Two resistors are used. Resistors can be quite large, up to 1M , because of the very high input impedance and low bias current of the sense comparator: The resistor values are calculated by: R1=R2 (VOUT – 1), 1.240 where VOUT is the desired output voltage. Figure 4 shows component definition. Applications with widely varying load currents may scale the resistors to draw the minimum load current required for proper operation. Error Flag The MIC29151-XX version feature s an Error Flag, which looks at the output voltage and signals an error condition when this voltage drops 5% below its expected value. The error flag is an open-collector output that pulls low under fault conditions. It may sink 10mA. Low output voltage signifies a number of possible problems, including an overcurrent fault (the device is in current limit) and a low input voltage. The flag output is inoperative during overtemperature shutdown conditions. Enable Input MIC29151-XX and MIC29152 versions feature an enable (EN) input that allows ON/OFF control of the device. A special design allows “zero” current drain when the device is disabled - only microamperes of leakage current flow. The EN input has TTL/CMOS compatible thresholds for simple interfacing with logic, or may be directly tied to 30V. Enabling the regulator requires approximately 20 A of current. http://www.hgsemi.com.cn http://www.hgsemi.com.cn   4 2019 AUG MIC29150/1/2 Important statement: Huaguan Semiconductor Co,Ltd. reserves the right to change the products and services provided without notice. Customers should obtain the latest relevant information before ordering, and verify the timeliness and accuracy of this information. Customers are responsible for complying with safety standards and taking safety measures when using our products for system design and machine manufacturing to avoid potential risks that may result in personal injury or property damage. Our products are not licensed for applications in life support, military, aerospace, etc., so we do not bear the consequences of the application of these products in these fields. Our documentation is only permitted to be copied without any tampering with the content, so we do not accept any responsibility or liability for the altered documents. http://www.hgsemi.com.cn  5 2019 AUG