TS9002 TSC | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Features

— Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V) — Low power consumption — 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

Ordering Information

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. Part No. Operating Temp. (Ambient) Package TS9002xCX5 -40 ~ +85 oC SOT-25

Applications

— P a l m t o p s — Video recorders — Battery powered equipment — PC peripherals — High-efficiency linear power supplies — Digital signal camera Block Diagram Typical Application Circuit Pin assignment 1. Input 2. Ground 3. Enable 4. Power Good 5. Output

TS9002 series 2-2 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 P D 380 mW Thermal Resistance Өja 260 oC/W Operating Junction Temperature Range Tj -40 ~ +125 oC Storage Temperature Range T STG -65 ~ +150 oC Lead Soldering Temperature (260 oC) 10 S Caution: Stress above the listed absolute rating may cause permanent damage to the device.

Electrical Characteristics

Parameter Conditions Min Typ Max Unit Vin=Vo + 1V Vout > 1.5V 0.985|Vo| 1.015|Vo| Output Voltage Vin=2.7V Vout <1.5V 0.970|Vo| 1.030|Vo| V Vout Temperature Coefficient -- 30 -- ppm/ oC Vin=Vo + 1V Vout > 1.5V 300 -- -- Maximum Output Current Vin=2.7V Vout <1.5V 150 -- -- mA 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 Vout≥2.0V -- 300 400 Dropout Voltage Io=300mA, Vout=Vo - 2% Vout<2.0V -- 800 1300 mV Quiescent Current Vin ≤0.4V (shutdown) -- 1 2 uA Vout > 1.5V -- 30 50 Quiescent Current Vout ≥0.4V, Io=0mA Vout <1.5V -- 50 80 uA Vout > 1.5V -- 450 -- Output Current Limit Vout=0V Vout <1.5V -- 350 -- mA At f=1kHz, -- 50 -- Power Supply Rejection Ratio Io=100mA, At f=10kHz, -- 20 -- dB Output Noise Io=10mA, f=10Hz to 100kHz, -- 30 -- uVrms Enable Input Enable Input Logic-Low Voltage R egulation shutdown -- -- 0.4 V Enable Input Logic-High Voltage Regulation enable 2.0 -- -- V VIL≤0.4V -- -- 0.5 Enable Input Current VIL≥2.0V -- -- 0.1 uA

TS9002 series 3-3 2004/09 rev. B Electrical Characteristics (continued) Power Good 1.5V ≤ Vo(NOM) -- -- 85 Output under voltage Vo(NOM) < 1.5V -- -- 75 Vo(NOM) 2.5V ≤ Vo(NOM) ≤ 5.0V 115 -- -- Output over voltage Vo(NOM) PG leakage current V PG = 7V -- -- 1 uA PG voltage rating Vo in regulation -- -- 7 V Isink = 0.4mA Vo >1.5V -- -- 0.4 PG voltage low Isink = 0.1mA Vo < 1.5V -- -- 0.1 V Detail Description

Description

The TS9002 series of CMOS regulators c ontain 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 in corporates current fold-back to reduce power dissipation when the output is short circuit. This feature becomes ac tive 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 t he error amplifier, over cu rrent 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 out put 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 betw een the input and ground to stabilize Vi n. 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 t oo low, during over-temperatur e, during over-current and output is pulled up.

TS9002 series 4-4 2004/09 rev. B Typical Electrical Characteristics

TS9002 series 5-5 2004/09 rev. B SOT-25 Mechanical Drawing SOT-25 DIMENSION MILLIMETERS INCHES DIM MIN MAX MIN MAX A 2.70 3.00 0.106 0.118 B 0.25 0.50 0.010 0.020 C 1.90(typ) 0.075(typ) D 0.95(typ) 0.037(typ) E 1.50 1.70 0.059 0.067 F 1.05 1.35 0.041 0.053 H 2.60 3.00 0.102 0.118 L 0.60(typ) 0.024(typ)