ISSUED DATE :2005/03/16 REVISED DATE : GQ2133 C M O S P o s i t i v e Vo l t a g e R e g u l a t o r Description The GQ2133 series of positive, linear regulators feature low quiescent current (30 A 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. An additional feature is a “Power Good” detector, which pulls low when the output is out of regulation. The GQ2133 is stable with an output capacitance of 2.2 F or greater. Features Very Low Dropout Voltage Guaranteed 300mA output Over-Temperature Shutdown Current Limiting Short Circuit Current Fold-back Highly Accurate± 1.5% Power Good Output Function Power-saving Shutdown Mode Factor Pre-set Output Voltage Functional Block Diagram Applications Battery Powered Widgets Instrumentation Wireless Devices PC Peripherals Portable Electronics Cordless Phones Electronic Scales Note: If output voltage specification is lower than 1.215V, Vref will be trimmed to 1.2V Package Dimensions REF. A B C D E F 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. Typical Application Circuit 1/7 ISSUED DATE :2005/03/16 REVISED DATE : Absolute Maximum Ratings Parameter Symbol Ratings Unit Input Max Voltage VIN 8 V Output Current IOUT PD/( VIN- VO) mA Output Voltage VOUT 1.2~3.8 V Operating Ambient Temperature Topr -40 ~ +85 Tj -40 ~ +125 Tj Max 150 Junction Temperature Maximum Junction Temperature Thermal Resistance Power Dissipation( T=100 ) ja 260 /W PD 380 mW EDS Classification B Electrical Characteristics Ta=25 Parameter Output Voltage Symbol VOUT (E) Output Current Current Limit Load Regulation IO ILIM REGLOAD Dropout Voltage VDROPOUT Quiescent Current Ground Pin Current Line Regulation Input Voltage (Note1) IQ IGND REGLINE Over Temperature Shutdown Over Temperature Hysterisis Vo Temperature Coefficient VIN OTS OTH TC Short Circuit Current(Note4) ISC Power Supply Rejection PSRR Output Voltage Noise eN EN Input Threshold VEH VEL EN Input Bias Current Shutdown Supply Current Shutdown Output Voltage IEH IEL ISD VO,SD Output Under Voltage VUV Output Over Voltage VOV PG Leakage Current PG Voltage Rating PG Voltage Low ILC unless otherwise noted Condition Min TYP Max Unit VIN=VOUT(T)+2V, IO=1mA -1.5% VOUT(T) 1.5% V VIN=VOUT(T)+2V, VOUT VOUT(E)*0.96 VIN=VOUT(T)+2V, VO>1.2V VIN=VOUT(T)+2V, IO=1mA to 300mA 1.2V VOUT(T) 2.0V IO=300mA VO=VOUT(E)-2% 2.0V<VOUT(T) 2.8V 2.8V<VOUT(T) VIN= VOUT(T)+1V, IO=0mA VIN= VOUT(T)+2V, IO=1mA~300mA 1.2V VOUT(T) 1.4V IO=1mA VIN=VOUT(T)+1 to 1.4V<VOUT(T) 2.0V VOUT(T)+2 2.0V<VOUT(T)<4 4.0V VOUT(T) 300 300 -1 -0.2 -0.15 -0.1 -0.4 Note3 - 450 0.2 30 35 0.02 0.2 150 30 30 150 60 50 20 1 1300 400 300 50 0.2 0.15 0.1 0.4 7 300 - mA mA % - 30 - Vrms 2.0 0 0 115 125 - 0.5 - VIN 0.4 0.1 0.5 1 0.4 85 75 1.0 V V A A A V VIN=VOUT(T)+1V, VOUT<0.8V f=100Hz Io=100mA f=1kHz Co=2.2 F f=10kHz f=10Hz~100kHz Co=2.2 f Io=10mA VIN=2.7V to 7V VIN=2.7V to 7V VEN=VIN, VIN=2.7V to 7V VEN= 0V, VIN=2.7V to 7V 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 (Note2) mV A A % V ppm/ mA dB % VOUT(T) % VOUT(T) A VPG VO in regulation - - 7.0 V VOL ISINK=0.4mA - - 0.4 V Note 1: V OUT (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+VDROPOUT 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. 2/7 ISSUED DATE :2005/03/16 REVISED DATE : Ordering Information ( contd. ) Part Number GQ2133-12 GQ2133-18 GQ2133-25 GQ2133-28 GQ2133-30 GQ2133-32 GQ2133-34 GQ2133-36 GQ2133-38 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 GQ2133-15 1.8V GQ2133-20 2.5V GQ2133-27 2.8V GQ2133-29 3.0V GQ2133-31 3.2V GQ2133-33 3.4V GQ2133-35 3.6V GQ2133-37 3.8V GQ2133-2H 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 3/7 ISSUED DATE :2005/03/16 REVISED DATE : 4/7 ISSUED DATE :2005/03/16 REVISED DATE : 5/7 ISSUED DATE :2005/03/16 REVISED DATE : 6/7 ISSUED DATE :2005/03/16 REVISED DATE : Detailed Description The GQ2133 series 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. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150 , or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120 . The GQ2133 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The GQ2133 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 GQ2133 is stable with an output capacitance to ground of 2.2 F 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 0.1 F ceramic capacitor with a 10 F 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 0.1 F to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “Quiet” ground termination is desirable. This 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 1 A. This pin behaves much like an electronic switch. Power Good The GQ2133 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 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.) Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory: Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C. TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785 China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165 7/7