SQ2133 CMOS Positive Voltage Regulator Elektronische Bauelemente RoHS Compliant Product Description The SQ2133 series of positive,linear regulators feature low quiescent current (30µA typ.) with low dropout voltage, making them ideal for battery applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. In applications requiring a low noise, regulated supply, place a 1000pF capacitor between Bypass and Ground. The SQ2133 is stable with an output capacitance of 2.2µF or greater. Features * High Accurate ± 1.5% REF. * Over-Temperature Shutdown A B C D E F * Factory Pre-set Output Voltage * Very Low Dropout Voltage * Power Good Output Function * Short Circuit Current Fold-back * Guaranteed 300mA output Millimeter Min. Max. 2.70 3.10 2.60 3.00 1.40 1.80 0.30 0.55 0 0.10 0° 10° REF. G H I J K L Dimensions Millimeter 1.90 REF. 1.20 REF. 0.12 REF. 0.37 REF. 0.60 REF. 0.95 REF. * Current Limiting * Power-Saving Shutdown Mode Applications * PC Peripherals * Wireless Devices * Portable Electronics * Battery Powered Widgets Functional Block Diagram * Electronic Scales * Instrumentation * Cordless Phones Typical Application Circuit IN IN BYP + C1 5V 1uF SQ2133 GND OUT OUT EN C2 2.2uF Note: If output voltage specification is lower than 1.215V, Vref will trimmed to 1.2V http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 1 of 7 SQ2133 CMOS Positive Elektronische Bauelemente Voltage Regulator Absolute Maximum Ratings Parameter Ratings Symbol Unit Input Voltage VIN 8 V Output Current IOUT PD/(VIN-VO) mA Output Voltage VOUT 1.2~3.8 Operating Ambient Temperature Topr -40~+85 Tj Tj Max. -40~+125 150 θja 260 PD 380 B Junction Temperature Max. Junction Temperature Thermal Resistance Power Dissipation ( EDS Classification o T=100 C) V o C o C o C o C /W mW o Electrical Characteristics Ta=25 C unless otherwise noted Parameter Output Voltage Ground Pin Current Output Current Current Limit Load Regulation Dropout Voltage Quiescent Current Line Regulation Symbol Over Temperature Shutdown Over Temperature Hystersis Output Voltage Temperature Coefficient Short Circuit Current 4 Power Supply Rejection Output Voltage Noise EN Input Threshold EN Input Bias Current Shutdown Supply Current Shutdown Output Voltage 1.5% V VIN=VOUT(T)+2V,1o=1mA -1.5% VOUT (E) Io 300 _ _ ILIM 300 450 REGLOAD -1 0.2 _ 35 _ _ VDROPOUT _ _ _ IQ _ 30 REGLINE VIN OTS OTH TC ISC _ 2 _ uA VIN=VOUT(T)+2V,Io=1mA~300mA mA _ VIN=VOUT(T)+2V,VOUT≥VOUT(E)*0.96 mA VIN=VOUT(T)+2V, Vo>1.2V 1 % 1300 400 300 mV 50 uA -0.2 _ 0.2 -0.15 _ 0.15 -0.1 0.02 0.2 0.1 150 _ o o 3 Note _ _ _ 0.4 7 30 _ ppm/ oC _ 150 300 mA 60 _ _ _ 20 _ eN _ 30 _ VEH VEL IEH IEL 2 0 _ VIN 0.4 0.1 _ _ _ _ _ ISD _ 0.5 Vo,SD 0 VOV PG Leakage Current PG Voltage Rating PG Voltage Low ILC VPG VOL _ _ _ _ _ 115 125 _ _ _ _ _ _ _ _ 0.5 f=1kHz f=10kHz uVrms Co=2.2Mf Io=100mA Co=2.2uF f=10Hz~100kHz Io=10mA V VIN=2.7V to 7V uA VEN=VIN,VIN=2.7V to 7V VEN=0V,VIN=2.7V to 7V 0.4 V _ VIN=VOUT(T)+1V,VOUT<0.8V f=100Hz uA 75 Io=1mA 1.4V< VOUT(T) ≤2.0V VIN=VOUT(T)+1 to 2.0V< VOUT(T)<4.0V VOUT(T)+2 4.0V<VOUT(T) dB 1 85 1.2V≤VOUT(T) ≤ 1.4V C C 30 _ VIN=VOUT(T)+2V,Io=1mA to300mA 1.2V ≤ VOUT(T) ≤ 2.0V Io=300mA 2.0V < VOUT(T)≤2.8V Vo=VOUT(E)-2% 2.8V<VOUT(T) VIN=VOUT(T)+1V,Io=0mA V _ 50 Output Over Voltage % _ _ PSRR VUV 01-Jun-2002 Rev. A Condition VOUT (E) IGND Output Under Voltage http://www.SeCoSGmbH.com/ Unit Typ. -0.4 Input Voltage Max. Min. 1 % VOUT(T) _ % VOUT(T) 1.0 uA 7.0 0.4 V V VIN=5V,Vo=0V,VEN<VEL Io=0.4mA,VEN<VEL 2.5V ≤ VOUT(T) ≤ 5.0V 1.2V ≤ VOUT(T) <2.5V 2.5V ≤ VOUT(T) ≤ 5.0V 1.2V ≤ VOUT(T) <2.5V VPG=7V Vo in regulation ISINK=0.4mA Any changing of specification will not be informed individual Page 2 of 7 SQ2133 CMOS Positive Elektronische Bauelemente Voltage Regulator Note 1: VOUT (E) =Effective Output Voltage (i.e. the output voltage when "VOUT (T) +2.0V" is provided at the VIN pin while maintaining a certain IOUT value). 2: VOUT (T) =Specified Output Voltage 3: VIN (MIN) =VOUT+V DROPOUT 4: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied. Ordering Information(contd.) Part Number SQ2133-12 SQ2133-18 SQ2133-25 SQ2133-28 SQ2133-30 SQ2133-32 SQ2133-34 SQ2133-36 SQ2133-38 Marking 3C122 XXXX 3C182 XXXX 3C252 XXXX 3C282 XXXX 3C302 XXXX 3C322 XXXX 3C342 XXXX 3C362 XXXX 3C382 XXXX Output Voltage Part Number 1.2V SQ2133-15 1.8V SQ2133-20 2.5V SQ2133-27 2.8V SQ2133-29 3.0V SQ2133-31 3.2V SQ2133-33 3.4V SQ2133-35 3.6V SQ2133-37 3.8V SQ2133-2H Marking 3C152 XXXX 3C202 XXXX 3C272 XXXX 3C292 XXXX 3C312 XXXX 3C332 XXXX 3C352 XXXX 3C372 XXXX 3C2H2 XXXX Output Voltage 1.5V 2.0V 2.7V 2.9V 3.1V 3.3V 3.5V 3.7V 2.85V Characteristics Curve ht tp://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 3 of 7 SQ2133 Elektronische Bauelemente http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A CMOS Positive Voltage Regulator Any changing of specification will not be informed individual Page 4 of 7 SQ2133 Elektronische Bauelemente http://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A CMOS Positive Voltage Regulator Any changing of specification will not be informed individual Page 5 of 7 SQ2133 Elektronische Bauelemente ht tp://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A CMOS Positive Voltage Regulator Any changing of specification will not be informed individual Page 6 of 7 SQ2133 Elektronische Bauelemente CMOS Positive Voltage Regulator Detailed Description The SQ2133 of COMS regulators contain a PMOS pass transistor,voltage reference, error amplifier,over-current protection and thermal shutdown and Power Good function. 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. o Over-current and Thermal shutdown circuits become active when the junction temperature exceeds150 C, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The SQ2133 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The SQ2133 also incorporates current fold-back to reduce power dissipation when the output is short circuited.This feature becomes active when the output drops below 0.8 volts, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8 volts. External Capacitors The SQ2133 is stable with an output capacitance to ground of 2.2uF or greater. Ceramic capacitors have the lowest ESR, and will offer the best AC performance. Conversely, Aluminum Elertrolytic 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 0.1 uF ceramic capacitor with a 10 uF 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 close proximity to the pins. A "Quiet" ground termination is desirable . The can be achieved with a "Star" connection. Enable The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the quiescent current is less than 1uA. This pin behaves much like an electronic switch. Power Good The SQ2133 includes the Power Good feature.When the output is not within ± 15% of the specified voltage, it pulls low. This can occur under the following conditions: 1. Input Votage Too Low. 2. During Over-Temperature. 3. During Over-Current. 1. If Output Is Pulled Up. (Note: PG pin is an open-drain output.) ht tp://www.SeCoSGmbH.com/ 01-Jun-2002 Rev. A Any changing of specification will not be informed individual Page 7of 7