GM7A4001

GM7A4001 100V 50mA Very High Voltage LDO 100V 50mA Very High Voltage LDO General Description Features The GM7A4001 device is a very high voltage-tolerant linear regulator that offers the benefits of a thermally-enhanced package, and is able to withstand continuous DC or transient input voltages of up to 100 V. The GM7A4001 device is stable with output capacitance greater than 2.2μF and any input capacitance greater than 0.47μF. Therefore, implementations of this device require minimal board space because of its miniaturized packaging (MSOP8-EP) and a potentially small          output capacitor. In addition, the GM7A4001 device offers an enable pin (EN) compatible with standard CMOS logic to enable a low-current shutdown mode. The GM7A4001 device has an internal thermal shutdown and current limiting to protect the system during fault conditions. The SOP8-EP and MSOP8-EP packages have an operating temperature range of TJ = –40°C to 125°C. In addition, the GM7A4001 device is ideal for generating a low-voltage supply from intermediate voltage rails in telecom and industrial applications; not only can it supply a well-regulated voltage rail, but it can also withstand and maintain regulation during very high and fast voltage transients. These features translate to simpler and more cost-effective electrical surge-protection circuitry for a wide range of applications, including PoE, bias supply, and LED lighting. www.gmmicro.com VIN Range 7V to 100V Output Voltage Tolerances of ±1.5% Output Current of 50 mA Low Quiescent Current 23 μA Quiescent Current at Shutdown 8 μA Dropout Voltage 2.8V at IOUT=50mA Internal Thermal Overload Protection Internal Short-Circuit Current Limit Adjustable Output Voltage form 1.2 to 90V Applications       Microprocessors, Microcontrollers Powered by Industrial Busses with High Voltage Transients Industrial Automation Telecom Infrastructure Automotive Power over Ethernet(PoE) LED Lighting Pin Configuration Typical Application Circuit Hang Zhou Gatemode Microelectronics Ltd 1 GM7A4001 100V 50mA Very High Voltage LDO Pin Assignment Pin Name Pin No. MSOP8-EP Pin No. SOP8-EP OUT FB NC GND EN IN 1 2 3,6,7 4,EP 5 8 1 2 3,6,7 4,EP 5 8 Pin Function Output Voltage Pin Feedback Non Connect Ground Enable Input Voltage Function Block Diagram Design Parameters Vout (V) 12 5 3.3 1.8 Cin (uF) 10 10 10 10 Cout(uF) 10 10 10 10 Cbypass(nF) 10 10 10 10 R1 (Kohm) 698 262 156 62.5 R2 (Kohm) 49.9 49.9 49.9 49.9 1. Vout = 0.8V * (R1+R2) / R2 2. 10uA < Vout / (R1+R2) < 30uA www.gmmicro.com Hang Zhou Gatemode Microelectronics Ltd 2 GM7A4001 100V 50mA Very High Voltage LDO Absolute Maximum Ratings (Note1)     VIN -------------------------------------------------------------------------------------------------- -0.3V to +110V VOUT -------------------------------------------------------------------------------------------------- -0.3V to +110V FB -------------------------------------------------------------------------------------------------- -0.3V to +5.5V EN --------------------------------------------------------------------------------------------------0.3V to +110V  Junction Temperature------------------------------------------------------------------------------------------ 125C  Lead Temperature (Soldering, 10 sec.)-------------------------------------------------------------------- 300C  Storage Temperature ---------------------------------------------------------------------------- 65C to 150C Recommended Operating Conditions     Input Voltage, VIN ------------------------------------------------------------------------------ +7V to +100V Output Voltage, VOUT ------------------------------------------------------------------------------ +1.2V to +90V Enable Voltage, VEN ------------------------------------------------------------------------------ 0V to +100V Output Current, IOUT ------------------------------------------------------------------------------ 0mA to +50mA  Junction Temperature ----------------------------------------------------------------------------- -40C to 125C Electrical Characteristics VIN=VOUT+3V or VIN≥7V, IOUT=100uA, CIN=1uF, COUT=4.7uF, TJ=25℃, unless otherwise specified Parameter Symbol Test Conditions Min Typ Max Input Voltage VIN 7 Internal Reference VREF 0.788 Units 100 V 0.8 0.812 V Line Regulation △VLINE VIN=7V to 100V, 3 20 mV Load Regulation △VLOAD 100uA < IOUT < 50mA 20 50 mV Dropout Voltage VDROP IOUT=20mA IOUT=50mA 1000 2800 Quiescent Current IQ IOUT = 0mA 23 40 uA Shutdown Current ISD VEN = 0V 8 15 uA Current Limit ICL VOUT = 90% VOUT(NOM) 120 200 mA VIN 0.4 V V 0.02 1 uA 0.01 0.11 uA Enable High Low Level VENHI VENLO Enable Pin Current IEN Feedback Pin Current IFB Thermal Shutdown TSD www.gmmicro.com 55 1.0 0 7V