TS9002 300mA CMOS LDO with Enable & Power Good Pin assignment 1. Input 2. Ground 3. Enable 4. Power Good 5. Output Low Drop Out Voltage 0.4V Enable Shutdown Power Good General Description The TS9002 series is a positive voltage linear regulator developed utilizing CMOS technology featured low quiescent current (30uA typ.), low dropout voltage, and high output voltage accuracy, making them ideal for battery applications. The Chip Enable (CE) includes a CMOS or TTL compatible input allows the output to be turned off to prolong battery life. The TS9002 series is included a precision voltage reference, error correction circuit, a current limited output driver, over temperature shutdown, and a “Power Good” detector, which pulls low when the output is out of regulation. This series are offered in 5-pin SOT-25 package. Features Ordering Information Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V) Low power consumption Part No. Operating Temp. (Ambient) TS9002xCX5 -40 ~ +85 oC SOT-25 Note: Where x denotes voltage option, available are 1=1.2V A=1.5V K=2.5V, S=3.3V, Contact factory for additional voltage options. Output voltage +/-2%, +/-3% (1.2V) Internal current limit and thermal shutdown Short circuit current fold-back Power saving shutdown mode Power good output function Applications Typical Application Circuit Palmtops Video recorders Battery powered equipment PC peripherals High-efficiency linear power supplies Digital signal camera Block Diagram TS9002 series Package 1-1 2004/09 rev. B Absolute Maximum Rating Input Supply Voltage Vin +7 V Enable Input Voltage Vce Gnd-0.3 ~ Vin+0.3 V Output Current Io Pd / (Vin – Vout) Power Dissipation PD 380 Thermal Resistance Өja 260 Tj -40 ~ +125 o C -65 ~ +150 o C Operating Junction Temperature Range Storage Temperature Range TSTG Lead Soldering Temperature (260 oC) mW o 10 C/W S Caution: Stress above the listed absolute rating may cause permanent damage to the device. Electrical Characteristics (Ta = 25 oC, Io=0.1mA, Cout=2.2uF, Vce≥2V; Vin >2.7V & Io<150mA for 1.2V output type, unless otherwise specified.) Parameter Output Voltage Conditions Typ Max Unit V Vin=Vo + 1V Vout > 1.5V 0.985|Vo| 1.015|Vo| Vin=2.7V Vout <1.5V 0.970|Vo| 1.030|Vo| Vout Temperature Coefficient Maximum Output Current Min -- 30 -- ppm/ oC mA Vin=Vo + 1V Vout > 1.5V 300 -- -- Vin=2.7V Vout <1.5V 150 -- -- Line Regulation Vo+1V ≤ Vin ≤ Vo+2V -- -- 0.3 % Load Regulation Vin=Vo+1V, 1mA≤IL≤300mA -- 0.2 1.0 % Load Regulation (1.2V output) Vin=2.7V, 1mA≤IL≤150mA -- 1 4.0 Dropout Voltage Io=300mA, Vout≥2.0V -- 300 400 Vout=Vo - 2% Vout<2.0V -- 800 1300 mV Quiescent Current Vin≤0.4V (shutdown) -- 1 2 uA Quiescent Current Vout≥0.4V, Vout > 1.5V -- 30 50 uA Io=0mA Vout <1.5V -- 50 80 Vout=0V Vout > 1.5V -- 450 -- Vout <1.5V -- 350 -- At f=1kHz, -- 50 -- At f=10kHz, -- 20 -- Io=10mA, f=10Hz to 100kHz, -- 30 -- uVrms Enable Input Logic-Low Voltage Regulation shutdown -- -- 0.4 V Enable Input Logic-High Voltage Regulation enable 2.0 -- -- V Enable Input Current VIL≤0.4V -- -- 0.5 uA VIL≥2.0V -- -- 0.1 Output Current Limit Power Supply Rejection Ratio Output Noise Io=100mA, mA dB Enable Input TS9002 series 2-2 2004/09 rev. B Electrical Characteristics (continued) Power Good Output under voltage Output over voltage 1.5V ≤ Vo(NOM) -- -- 85 % Vo(NOM) < 1.5V -- -- 75 Vo(NOM) 2.5V ≤ Vo(NOM) ≤ 5.0V 115 -- -- % 1.2V ≤ Vo(NOM) ≤ 2.5V 125 -- -- Vo(NOM) PG leakage current VPG = 7V -- -- 1 uA PG voltage rating Vo in regulation -- -- 7 V PG voltage low Isink = 0.4mA Vo >1.5V -- -- 0.4 V Isink = 0.1mA Vo < 1.5V -- -- 0.1 Detail Description Description The TS9002 series of CMOS regulators contain a P-MOS pass transistor, voltage reference, error amplifier, over current protection, thermal shutdown and power good function. The TS9002 series switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over stress. The TS9002 also incorporates current fold-back to reduce power dissipation when the output is short circuit. This feature becomes active when the output drops below 0.8V, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8V. The internal P-channel pass transistor receives data from the error amplifier, over current shutdown, short output protection 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 oC, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120 oC. Enable The Chip Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shut 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. External Capacitor The TS9002series is stable with an output capacitor to ground of 2.2uF or greater. It can keep stable even with higher or poor ESR capacitors. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be larger than 0.1uF to have a beneficial effect. All capacitors should be placed in close proximity to the pins. A “quiet” ground termination is desirable. Power Good The TS9002 includes the Power Good feature. When the output is not within = +/-15% of the specified voltage, it pulls low. This can occur on other condition – input voltage too low, during over-temperature, during over-current and output is pulled up. TS9002 series 3-3 2004/09 rev. B Typical Electrical Characteristics TS9002 series 4-4 2004/09 rev. B SOT-25 Mechanical Drawing DIM A B C D E F H L TS9002 series 5-5 SOT-25 DIMENSION MILLIMETERS INCHES MIN MAX MIN MAX 2.70 3.00 0.106 0.118 0.25 0.50 0.010 0.020 1.90(typ) 0.075(typ) 0.95(typ) 0.037(typ) 1.50 1.70 0.059 0.067 1.05 1.35 0.041 0.053 2.60 3.00 0.102 0.118 0.60(typ) 0.024(typ) 2004/09 rev. B