xxxM xxxM NCP552, NCP553, NCV553 80 mA CMOS Low Iq NOCAP Voltage Regulator This series of fixed output NOCAP linear regulators are designed for handheld communication equipment and portable battery powered applications which require low quiescent. This series features an ultralow quiescent current of 2.8 A. Each device contains a voltage NCP552, NCP553, NCV553 PIN FUNCTION DESCRIPTION NCP552 NCP553 Pin Name Description 1 1 GND Power supply ground. 2 2 Vin Positive power supply input voltage. 3 3 Vout Regulated output voltage. 4 Enable This input is used to place the device into lowpower standby. When this input is pulled low, the device is disabled. If this function is not used, Enable should be connected to Vin. 4 N/C No internal connection. MAXIMUM RATINGS Rating Symbol Value Unit Input Voltage V 12 V in Enable Voltage (NCP552 ONLY) Enable 0.3 to V +0.3 V in Output Voltage V 0.3 to V +0.3 V out in Power Dissipation and Thermal Characteristics Power Dissipation P Internally Limited W D Thermal Resistance, JunctiontoAmbient R 400 C/W JA Operating Junction Temperature T +125 C J Operating Ambient Temperature T C A NCP552, NCP553 40 to +85 NCV553 40 to +125 Storage Temperature T 55 to +150 C stg 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 2000 V per MILSTD883, Method 3015 Machine Model Method 200 V 2. Latch up capability (85C) 200 mA DC with trigger voltage.