TS9001 TSC | Alldatasheet

Document overview

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Technical content

Features

— Dropout voltage typically 0.4V@Io=300mA (Vo>2.5V) — Output current up to 300mA — Low power consumption — Output voltage +/-2% — Internal current limit and thermal shutdown — Thermal shutdown protection

Ordering Information

Note: Where x denotes voltage option, available are A=1.5V D=1.8V, K=2.5V, P=3.0V, S=3.3V, Contact factory for additional voltage options. Part No. Operating Temp. (Ambient) Package TS9001xCX5 -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. Bypass 5. Output

TS9001 series 2-5 2003/12 rev. A 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) 5 S Caution: Stress above the listed absolute rating may cause permanent damage to the device.

Electrical Characteristics

Ta = 25 oC, Io=1mA, Cout=2.2uF, Vce≥2V, unless otherwise specified. Parameter Conditions Min Typ Max Unit Output Voltage Vin=Vo + 1V 0.985|Vo| 1.015|Vo| V Output Voltage Temperature Coefficient -- 50 -- ppm/ oC Maximum Output Current Vin=Vo+1V, 300 -- -- mA Line Regulation Vo+1V ≤ Vin ≤ 7V -- -- 0.3 %/V Vin=Vo+1V, 1mA≤IL≤300mA Vout≥2.5V -- 0.2 1.0 Load Regulation Vin=Vo+1V, 1mA≤IL≤200mA Vout<2.5V -- 0.2 1.0 %/V Io=300mA, Vout=Vo - 2% Vout≥2.5V -- 300 -- Dropout Voltage Io=200mA, Vout=Vo - 2% Vout<2.5V -- 800 1000 mV Quiescent Current Vin ≤0.4V (shutdown) -- 2 3 uA Ground Pin Current Io=1mA to 300mA -- 30 50 uA Output Current Limit Vout=0V -- 450 -- mA Power Supply Rejection Ratio At f=1kHz, Io=100mA, -- 60 -- dB Power Supply Rejection Ratio At f=1kHz, Io=100mA, Cbypass=0.01uF -- 75 -- dB Output Noise Io=10mA, f=10Hz to 100kHz, 10pF from bypass to Ground -- 30 -- uVrms Enable Input Enable Input Logic-Low Voltage Regulation shutdown -- -- 0.4 V Enable Input Logic-High Voltage Regulation enable 2.0 -- -- V VIL≤0.4V -- 0.01 1 Enable Input Current VIL≥2.0V -- 1 5 uA

TS9001 series 3-5 2003/12 rev. A Detail Description

Description

The TS9001 series of CMOS regulators contain a P-MOS pass transistor, voltage reference, error amplifier, over current protection, thermal shutdown and short circuit protection. The TS9001 series switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over stress. The TS9000 also incorporates current fold-back to reduce power dissipation when the output is short circuit. This feature becomes active when the output drops below 1.05V, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.95V. 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 5uA. This pin behaves much like an electronic switch. External Capacitor The TS9001 series 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. A third capacitor can be connected between the Bypass pin and Ground. This capacitor can be a low cost polyester film variety between the value of 1~10nF. A larger capacitor improves the AC ripple rejection, but also makes the output come up slowly. This “soft” turn-on is desirable in some applications to limit turn-on surges. All capacitors should be placed in close proximity to the pins. A “quiet” ground termination is desirable.

TS9001 series 4-5 2003/12 rev. A Application Examples Standard Circuit Typical Application Circuit 1 Typical Application Circuit 2

TS9001 series 5-5 2003/12 rev. A SOT-25 Mechanical Drawing SOT-23 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)