DATA SHEET SHEET DATA BIPOLAR ANALOG INTEGRATED CIRCUIT µPC2250 SERIES LOW-SATURATED STABILIZED POWER SUPPLY WITH SYSTEM RESET PIN DESCRIPTION The µPC2250 series is a collection of low-saturated 4-pin stabilized power supplies with a pin that outputs a reset signal when a drop in the input voltage is detected. Because the reverse leakage current of these power supplies is about 1 µA even if a voltage is applied to the output pin when the input voltage is cut off, these power supplies are ideal for systems with on-board microprocessors requiring battery backup. FEATURES • PIN CONFIGURATION (Marking Side) Low minimum voltage difference between input and output 4-pin plastic SIP (TO-126) VDIF = 0.15 V TYP. (at IO = 40 mA) µPC2251H, 2253H, 2255H • Outputs reset signal (active-low) when the input voltage or • Low reverse leakage current during back up output voltage drops. 1: INPUT IOLK = 1 µA TYP. • 1 2 3 4 Low circuit operating current under no load 2: RESET 3: GND IBIAS = 1.3 mA TYP. 4: OUTPUT ORDERING INFORMATION Part Number Package Output Voltage µPC2251H 4-pin plastic SIP (TO-126) 3V µPC2253H 4-pin plastic SIP (TO-126) 5 V (TYPE1) µPC2255H 4-pin plastic SIP (TO-126) 5 V (TYPE2) BLOCK DIAGRAM INPUT OUTPUT Overcurrent limiter circuit Starter circuit Reference voltage circuit Error amplifier circuit RESET Reset circuit GND The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. Document No. G14451EJ2V0DS00 (2nd edition) Date Published December 1999 N CP(K) Printed in Japan © 1999 µPC2250 SERIES ABSOLUTE MAXIMUM RATINGS (Unless otherwise specified, T A = 25°C) Parameter Symbol Rating Unit VIN –0.3 to +12 V Input Voltage Note 1.2 Total Power Dissipation PT W Operating Ambient Temperature TA –20 to +85 °C Operating Junction Temperature TJ –20 to +150 °C Storage Temperature Tstg –55 to +150 °C Thermal Resistance (Junction to Case) Rth (J–C) 10 °C/W Thermal Resistance (Junction to Ambient) Rth (J–A) 104 °C/W Note The total loss is limited by an internal circuit. Where TJ > 150°C, an internal protection circuit cuts off the output. Caution If any of the parameters exceeds the absolute maximum ratings, even momentarily, the quality of the product may be impaired. The absolute maximum ratings are values that may physically damage the product(s). Be sure to use the product(s) within the ratings. STANDARD CONNECTION OUTPUT INPUT 1 INPUT 4 3 CIN 0.33 µ F GND 2 D1 + CO Output + Backup capacitor (for backup) RESET Reset output D2 CIN CDLY : Determine the capacitance depending on the line between the power supply smoothing circuit and input pin. Be sure to connect this capacitor to prevent abnormal oscillation. Use of a capacitor, such as a film capacitor, with excellent voltage and temperature characteristics is recommended. Note that some laminated ceramic capacitors have poor temperature and voltage characteristics. When using a laminated ceramic capacitor, the capacitance must be stable in the voltage and temperature ranges used. CO : Must be 10 µF or more. Be sure to connect this capacitor to prevent oscillation and to improve transient load stability. Connect CIN and CO as close to the IC (within 1 to 2 cm) as possible. D1, D2 : Connect Schottky barrier diodes (with a low forward voltage) if the voltage on the OUTPUT and RESET pins is lower than that on the GND pin. 2 Data Sheet G14451EJ2V0DS00 µPC2250 SERIES µPC2251 RECOMMENDED OPERATING CONDITIONS Symbol MIN. TYP. MAX. Unit Input Voltage VIN 3.5 4 9 V Output Current IO 0 40 mA Operating Junction Temperature TJ –20 +125 °C Parameter Caution The recommended operating range may be exceeded without causing any problems provided that the absolute maximum ratings are not exceeded. However, if the device is operated in a way that exceeds the recommended operating conditions, the margin between the actual conditions of use and the absolute maximum ratings is small, and therefore thorough evaluation is necessary. The recommended operating conditions do not imply that the device can be used with all values at their maximum values. ELECTRICAL SPECIFICATIONS (Unless otherwise specified, VIN = 4 V, IO = 40 mA, TJ = 25°C, CIN = 0.33 µF, CO = 10 µF.) Parameter Output Voltage Symbol Conditions MIN. TYP. MAX. Unit 2.88 3.00 3.12 V 3.15 V 3.5 V ≤ VIN ≤ 12 V 50 mV 3.5 V ≤ VIN ≤ 9 V 20 mV 1 mA ≤ lO ≤ 100 mA 50 mV 1 mA ≤ lO ≤ 40 mA 20 mV IO = 0 A 2.0 mA VO1 VO2 3.5 V ≤ VIN 9 V, 1 mA ≤ lo ≤ 40 mA, 2.85 0°C ≤ TJ ≤ 125°C Line Regulation Load Regulation Quiescent Current REGIN REGL IBIAS IO = 100 mA Quiescent Current Change Output Noise Voltage ∆IBIAS Vn 8.0 4 V ≤ VIN ≤ 12 V mA 1.0 10 Hz ≤ f ≤ 100 kHz mA µVr.m.s. 70 Ripple Rejection R•R f= 120 Hz, 4 V ≤ VIN ≤ 9 V Dropout Voltage VDIF IO = 40 mA, 0°C ≤ TJ ≤ 125°C Short Circuit Current IOshort VIN = 12 V 15 mA Peak Output Current IOpeak VIN = 4 V 150 mA IO = 5 mA, 0°C ≤ TJ ≤ 125°C 0.2 mV/°C Temperature Coefficient of Output Voltage ∆VO/∆T OFF Output Leakage Current IOLK VIN = 0 V, VO = 3.0 V Reset Start Output Voltage VORT 0°C ≤ TJ ≤ 125°C Reset Output Saturated Voltage VRT(sat) IR = 1.6 mA Data Sheet G14451EJ2V0DS00 48 dB 0.15 VO1−0.2 0.30 V 10 µA VO1−0.1 V 0.8 V 3 µPC2250 SERIES µPC2253 RECOMMENDED OPERATING CONDITIONS Symbol MIN. TYP. MAX. Unit Input Voltage VIN 5.5 6 12 V Output Current IO 0 40 mA Operating Junction Temperature TJ –20 +125 °C Parameter Caution The recommended operating range may be exceeded without causing any problems provided that the absolute maximum ratings are not exceeded. However, if the device is operated in a way that exceeds the recommended operating conditions, the margin between the actual conditions of use and the absolute maximum ratings is small, and therefore thorough evaluation is necessary. The recommended operating conditions do not imply that the device can be used with all values at their maximum values. ELECTRICAL SPECIFICATIONS (Unless otherwise specified, VIN = 6 V, IO = 40 mA, TJ = 25°C, CIN = 0.33 µF, CO = 10 µF.) Parameter Output Voltage Symbol Conditions VO1 VO2 5.5 V ≤ VIN ≤ 12 V, 1 mA ≤ lo ≤ 40 mA, MIN. TYP. MAX. Unit 4.8 5.0 5.2 V 5.25 V 4.75 0°C ≤ TJ ≤ 125°C Line Regulation REGIN 5.5 V ≤ VIN ≤ 12 V 30 mV Load Regulation REGL 1 mA ≤ lO ≤ 100 mA 80 mV 1 mA ≤ lO ≤ 40 mA 30 mV IO = 0 A 2.0 mA Quiescent Current IBIAS IO = 100 mA Quiescent Current Change Output Noise Voltage ∆IBIAS Vn 8.0 6 V ≤ VIN ≤ 12 V mA 1.0 10 Hz ≤ f ≤ 100 kHz mA µVr.m.s. 130 Ripple Rejection R•R f= 120 Hz, 6 V ≤ VIN ≤ 11 V Dropout Voltage VDIF IO = 40 mA, 0°C ≤ TJ ≤ 125°C Short Circuit Current IOshort VIN = 12 V 15 mA Peak Output Current IOpeak VIN = 6 V 150 mA IO = 5 mA, 0°C ≤ TJ ≤ 125°C 0.3 mV/°C Temperature Coefficient of Output Voltage ∆VO/∆T OFF Output Leakage Current IOLK VIN = 0 V, VO = 5.0 V Reset Start Output Voltage VORT 0°C ≤ TJ ≤ 125°C Reset Output Saturated Voltage 4 VRT(sat) IR = 1.6 mA Data Sheet G14451EJ2V0DS00 46 dB 0.15 2.70 2.85 0.30 V 10 µA 3.00 V 0.8 V µPC2250 SERIES µPC2255 RECOMMENDED OPERATING CONDITIONS Symbol MIN. TYP. MAX. Unit Input Voltage VIN 5.5 6 12 V Output Current IO 0 40 mA Operating Junction Temperature TJ –20 +125 °C Parameter Caution The recommended operating range may be exceeded without causing any problems provided that the absolute maximum ratings are not exceeded. However, if the device is operated in a way that exceeds the recommended operating conditions, the margin between the actual conditions of use and the absolute maximum ratings is small, and therefore thorough evaluation is necessary. The recommended operating conditions do not imply that the device can be used with all values at their maximum values. ELECTRICAL SPECIFICATIONS (Unless otherwise specified, VIN = 6 V, IO = 40 mA, TJ = 25°C, CIN = 0.33 µF, CO = 10 µF.) Parameter Output Voltage Symbol Conditions VO1 VO2 5.5 V ≤ VIN ≤ 12 V, 1 mA ≤ lo ≤ 40 mA, MIN. TYP. MAX. Unit 4.8 5.0 5.2 V 5.25 V 4.75 0°C ≤ TJ ≤ 125°C Line Regulation REGIN 5.5 V ≤ VIN ≤ 12 V 30 mV Load Regulation REGL 1 mA ≤ lO ≤ 100 mA 80 mV 1 mA ≤ lO ≤ 40 mA 30 mV IO = 0 A 2.0 mA Quiescent Current IBIAS IO = 100 mA Quiescent Current Change Output Noise Voltage ∆IBIAS Vn 8.0 6 V ≤ VIN ≤ 12 V mA 1.0 10 Hz ≤ f ≤ 100 kHz mA µVr.m.s. 130 Ripple Rejection R•R f = 120 Hz, 6 V ≤ VIN ≤ 11 V Dropout Voltage VDIF IO = 40 mA, 0°C ≤ TJ ≤ 125°C Short Circuit Current IOshort VIN = 12 V 15 mA Peak Output Current IOpeak VIN = 6 V 150 mA IO = 5 mA, 0°C ≤ TJ ≤ 125°C 0.3 mV/°C Temperature Coefficient of Output Voltage ∆VO/∆T OFF Output Leakage Current IOLK VIN = 0 V, VO = 5.0 V Reset Start Output Voltage VORT 0°C ≤ TJ ≤ 125°C Reset Output Saturated Voltage VRT(sat) IR = 1.6 mA Data Sheet G14451EJ2V0DS00 46 dB 0.15 VO1−0.3 0.30 V 10 µA VO1−0.2 V 0.8 V 5 µPC2250 SERIES CHARACTERISTIC CURVES (Unless otherwise specified, T A = 25°°C. Reference values) ∆VO - TJ Characteristics PT vs. TA Characteristics 12.5 30 VIN = 6V, IO = 5 mA with infinite heatsink ∆VO - Output Voltage Variation - mV PT - Total Power Dissipation - W 15 10 with 10°C/W heatsink 5 1.2 0 without heatsink 20 10 0 −10 −20 −30 −25 25 50 75 100 125 150 TA - Operating Ambient Temperature - °C 0 25 50 75 100 125 150 TJ - Operating Junction Temperature - °C VO - VIN Characteristics IBIAS - VIN Characteristics 7 25 IO = 40 mA IO = 100 mA IBIAS - Quiescent Current - mA VO - Output Voltage - V 6 µ PC2253, 2255 5 4 µ PC2251 3 2 1 0 1 2 3 4 5 6 VIN - Input Voltage - V 7 8 20 µ PC2251 10 5 0 R·R - f Characteristics 90 IO = 40 mA R·R - Ripple Rejection - dB 80 µ PC2251 70 60 µ PC2253, 2255 50 40 30 10 6 100 1k 10k f - Frequency - Hz µ PC2253, 2255 15 100k Data Sheet G14451EJ2V0DS00 2 4 6 VIN - Input Voltage - V 8 10 µPC2250 SERIES RESET OUTPUT CHARACTERISTICS (with standard connection) VIN 1.5 to 2 V 0V VO(RST) VO Note 1 0V VRST ( µ PC2251, 2255) 0V Note 2 VRST ( µ PC2253) 0V Note 2 Notes 1. The reset signal is output if the circuit enters backup status when the input voltage falls below the output voltage. 2. The reset output is undefined if the input voltage is 1.5 to 2 V or lower. Data Sheet G14451EJ2V0DS00 7 µPC2250 SERIES NOTES ON CORRECT USE Keep the output current of the µPC2250 series to within lO (steady-state current) in Figure 1 at the operating junction temperature (TJ). Keep the output current, including the inrush current to the output capacitor, to within IORUSH in the figure when starting the circuit. If these current limits are exceeded, the output voltage may not rise to the specified level because of the operation of the overcurrent limiter circuit. Figure 1. Output Current Limits of µPC2250 Series 200 Output Inrush Current IORUSH (mA) Output current IO (mA) 150 IORUSH 200 IO (steady-state current) 50 0 50 100 Operating Junction Temperature TJ (°C) 8 Data Sheet G14451EJ2V0DS00 150 µPC2250 SERIES PACKAGE DRAWINGS 4 PIN PLASTIC SIP (TO-126) A N E M Q D 1 4 K Y J H U V C F G M NOTE Each lead centerline is located within 0.2 mm (0.008 inch) of its true position (T.P.) at maximum material condition. ITEM MILLIMETERS INCHES A 8.5 MAX. C 1.1 MIN. 0.043 MIN. D 9.7±0.3 0.382±0.012 E φ 3.2±0.1 φ 0.126±0.004 F 0.65±0.1 0.026 +0.004 –0.005 G 0.2 0.008 H 2.0 0.079 J 1.25 MAX. 0.05 MAX. K 2.3 MIN. 0.09 MIN. M 11.5 MAX. 0.453 MAX. N 2.7±0.2 0.106 +0.009 –0.008 0.335 MAX. Q 14.5 MAX. 0.571 MAX. U 1.7 MAX. 0.067 MAX. V 0.55±0.1 0.022 +0.004 –0.005 Y 13.5±0.7 0.531 +0.029 –0.028 P4HP-200B-1 Data Sheet G14451EJ2V0DS00 9 µPC2250 SERIES RECOMMENDED SOLDERING CONDITIONS Solder this product under the following recommended conditions. For details of the recommended soldering conditions, refer to information document Semiconductor Device Mounting Technology Manual (C10535E). For soldering methods and conditions other than those recommended, consult NEC. Through Hole Type Soldering Conditions µPC2251H, 2253H, 2255H: 4-pin plastic SIP (TO-126) Soldering Conditions Soldering Method Wave soldering (Pins only) Solder bath temperature: 260°C max., Time: 10 sec max. Partial heating Pin temperature: 300°C max., Time: 3 sec max. (per pin) Caution When soldering this product using wave soldering, exercise care that the solder does not come in direct contact with the package. 10 Data Sheet G14451EJ2V0DS00 µPC2250 SERIES [MEMO] Data Sheet G14451EJ2V0DS00 11 µPC2250 SERIES • The information in this document is subject to change without notice. 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