S5U2167 SECOS | Alldatasheet
Document overview
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Technical content
Features
- Low Temperature Coefficient * Over-Temperature Shutdown * Very Low Dropout Voltage * Noise Reduction Bypass Capacitor * Short Circuit Current Fold-back * Guaranteed 750mA output * Current Limiting * Portable Electronics
Applications
- PC Peripherals * Wireless Devices * Battery Powered Widgets * Instrumentation Typical Application Circuit Functional Block Diagram * Power-Saving Shutdown Mode The S5U2167 is stable with an output capacitance of 4.7mF or greater. The S5U2167 series positive,linear regulators feature low quiescent current (45mA typ.) with low dropout voltage, making them ideal for battery applications. Output voltage are set at the factory and trimmed to 1.5% accuracy.These rugged devices have both Thermal Shutdown and Current Fold-back to prevent device failure under the "Worst" of operating conditions. An additional feature is a "Power Good" detector, which pulls low when the output is out of regulation.
Description
01-Jun-2002 Rev. A Page 1 of 6 http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual R o H S C o m p l i a n t P r o d u c t S5U2167 A 4.40 4.80 c2 1.25 1.45 b 0.66 0.91 L2 1.27 REF. L4 0.00 0.30 B D 8.6 9.0 c 0.36 0.5 e 1.70 REF. L1 2.29 2.79 L 14.6 15.8 E 9.80 10.4 0˚ 8˚ Millimeter
http://www.SeCoSGmbH.com/ o C)Power Dissipation ( Input Voltage Output Current Output Voltage Operating Ambient Temperature Junction Temperature Parameter Symbol Ratings Unit V mA V C W3.0 VIN IOUT Tj Max. PD/(VIN-VO) -40~+125 1.5~3.3 -40~+85 o Max. Junction Temperature T=100 EDS Classification VOUT Topr Tj PD 150 B C o C o Absolute Maximum Ratings Elektronische Bauelemente Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 2 of 6 (T)+1 to Electrical Characteristics TA=25 unless otherwise noted (VIN=VOUT (T) +2V, VEN=VIN, CIN=1uF, COUT=4.7uF) Parameter Symbol Condition Min TYP Max Unit Output Voltage VOUT(E) (Note1) IO=1mA, VIN=VOUT(T)+2V -1.5 VOUT(T) (Note2) 1.5 % Output Current IO VO>1.2V 750 - - mA Current Limit ILIM VO>1.2V 750 - - mA Short Circuit Current ISC VIN=VOUT(T)+1V, VO < 0.4V - 750 - mA Load Regulation REGLOAD VIN=VOUT(T)+2V, IO=1mA to 750mA -1 0.2 1 % VOUT(T)=1.5V - - 1000 VOUT(T)=1.8V - - 650 Dropout Voltage VDROPOUT IO=750mA VO=VOUT(E)-2% VOUT(T)2.0V - - 500 mV Quiescent Current IQ VIN=VOUT(T)+2V, IO=0mA - 45 70 A Ground Pin Current IGND V IN=VOUT(T)+2V, IO=1mA to 750mA - 45 - A IO=1mA VIN=VOUT (T)+1 to VOUT(T)+2 4.0VVOUT(T) -0.4 - 0.4 Input Voltage VIN Note3 - 7 V Over Temperature Shutdown OTS - 150 - : Over Temperature Hysterisis OTH - 30 - : Output Voltage Temperature Coefficient TC - 30 - ppm/: f=1kHz - 75 - f=10kHz - 55 - Power Supply Rejection PSRR Io=100mA Co=4.7F (ceramic) f=100kHz - 30 - dB Output Voltage Noise eN f=10Hz~100kHz, Io=10mA, Co=4.7F - 30 - Vrms VEH VIN=2.7V to 7V 2.0 - V IN V EN Input Threshold VEL VIN=2.7V to 7V 0 - 0.4 V IEH VEN=VIN, VIN=2.7V to 7V - - 1 A EN Input Bias Current IEL VEN= 0V, VIN=2.7V to 7V - - 1 A Shutdown Supply Current ISD VIN=5V, VO=0V, VEN<VEL - 0.5 2 A Output Under Voltage V UV PG goes Low when VOUT too Low - - 84 % VOUT(T) Output Over Voltage V OV PG goes Low when VOUT too High 105 - - % VOUT(T) PG Leakage Current ILC VPG=7V - - 1.0 A PG Voltage Low VOL ISINK=0.25mA - - 0.4 V Note 1: V OUT (E) =Effective Output Voltage (i.e. the output voltage when ªV OUT (T) + 2.0Vº is provided at the V IN pin while maintaining a certain IOUT value). 2: V OUT (T) =Specified Output Voltage 3: V IN (MIN) =VOUT+VDROPOUT S5U2167 750mA CMOS Positive Voltage Regulator
01-Jun-2002 Rev. A Page 3 of 6 ht tp://www.SeCoSGmbH.com/ A ny changing of specification will not be informed individual Elektronische Bauelemente S5U 2167-15 Part Number Marking Output Voltage Part Number Marking Output Voltage 7F152 1.5VXXXX Ordering Information(contd.) S5U 2167-25 7F252 2.5VXXXX S5U 2167-18 7F182 1.8VXXXX S5U 2167-33 7F332 3.3VXXXX Detailed Description The S5U 2167 of COMS regulators contain a PMOS pass transistor,voltage reference, error amplifier,over-current protection and thermal shutdown.The P-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds140 C, or the current exceeds 2.2A. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120 C.The S5U 2167 behaves like a current source when the load reaches 2.2A. However, if the load impedance drops below 0.3 , the current drops back to 600mA to prevent excessive power dissipation. Normal operation is restored when the load resistance exceeds of 0.75 . o o External Capacitors The S5U 2167 is stable with an output capacitance to ground of 4.7uF or greater. Ceramic capacitors have the lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1uF ceramic capacitor with a 10uF Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. A second capacitor is recommended between the input and ground to stabilize VIN. The input capacitor should be at least 0.1uF to have a beneficial effect. All capacitors should be placed in closed proximity to the pins. A "Quiet" ground termination is desirable. This can be achieved with a "Star" connection. S5U 2167 includes the Power Good feature. When the output in not within 15% of the specified voltage, it pulls low. This can S5U2167 750mA CMOS Positive Voltage Regulator Ω Ω Enable When EN pin is pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the quiescent current is less than 2uA. This pin behaves much like an electronic switch. 100K resistor is necessary between VEN source and EN pin when VEN is high than VIN. (Note: There is no internal pull-up for EN pin. It can not be floating.) Ω Power Good The occur under the following conditions: 1. Input voltage too low. 2. During over-temperature. 3. During over-current. 4. If output is pulled up. ( Note: PG pin is an open-drain output.)
01-Jun-2002 Rev. A Page 4 of 6 http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual Characteristics Curve S5U2167 750mA CMOS Positive Voltage Regulator
http://www.SeCoSGmbH.com/ Any changing of specification will not be informed individual 01-Jun-2002 Rev. A Page 5 of 6 S5U2167 750mA CMOS Positive Voltage Regulator
01-Jun-2002 Rev. A Page 6 of 6 ht tp://www.SeCoSGmbH.com/ A ny changing of specification will not be informed individual Elektronische Bauelemente S5U2167 750mA CMOS Positive Voltage Regulator