AN6545, AN6545SP Low Power Loss Voltage Regulators AN6545 ■ Overview Unit:mm 8.0 3.05 ■ Features 15.0min. 1.94 11.5max. 3.8 The AN6545 and AN6545SP are the voltage regulators with strobe pin which can turn on/off an output. A rated load current is 150mA and an output voltage is fixed at 5V. +0.5 – 0.1 0.5±0.2 • 150mA rated load current and 5V fixed output voltage • Capable of turning off an output by setting the strobe pin to the “L” level • Minimum input/output voltage difference:typ. 0.25V • Built-in overcurrent protective circuit • TO-126 (4-lead) package for the AN6545, and surfacemount type 5-pin SIL plastic package for the AN6545SP 1 234 1.778 0.5±0.1 1.44 1.76 1.778 1.778 3.5max. 5.334 1 23 4 4-pin SIL Plastic Package (SSIP004-P-0000B) AN6545SP Unit:mm 2.3±0.3 5.5±0.3 0 — 0.2 1.2±0.25 1.5±0.25 0.5±0.1 (2.5) 0.7±0.1 9.5±0.4 1.5±0.25 8.5±0.4 7.5±0.3 5.0±0.25 1.27 + 0.1 0.5±0.1 0.5 – 0.05 (1.1) 1 2 3 4 5 5-pin SIL Plastic Package (HSIP005-P-0000) ■ Block Diagram 1 Over Current Detector 1 VI 5 2 Voltage Reference Voltage Fluctuation Detector Saturation Detector Current Source – Starter + 4 3 3 GND Fin The numbers in are the pin numbers of the AN6545SP ■ Absolute Maximum Ratings (Ta=25˚C) Parameter Symbol Rating VI 14.4 Supply voltage Power dissipation AN6545 PD AN6545SP Topr Operating ambient temperature Storage temperature AN6545 Tstg AN6545SP Unit V 1300 * mW 500 mW –20 to+75 ˚C –55 to+150 ˚C –55 to+125 ˚C * Mounted onto the PCB ■ Electrical Characteristics (Ta=25˚C) Parameter Symbol Condition min typ max Unit Output voltage VO VI=12V, IO=150mA 4.8 5 5.2 V Output voltage range Vt VI=6 to 14.4V, IO=0 to 150mA 4.7 5 5.3 V VI=12V, IO=0mA Ibias 4 mA REGL VI=12V, IO=0 to 150mA 100 mV REGIN VI=6 to 14V, IO=150mA 100 mV 5 V Bias current Load regulation Line regulation VI=4.5V, IO=150mA VDIF (min) Minimum input/output voltage difference VI=4.5V, IO=0mA Irush Rush current Output short-circuit current IO (short) VI=12V Load bias current change ∆Ibiasl VI=12V, IO=0 to 150mA Off-state cathode current IOFF VI=12V, VS=2.5V VI=12V VI=10 to 14V, IO=150mA, f=120kHz VS (TH) RR Ripple rejection ratio 2.5 350 VI=12V, VS=0V IS Strobe pin input current Strobe pin threshold voltage 2.9 0.8 2 mA 550 mA 10 mA 2 µA 200 µA 2.4 V 55 dB ■ Application Circuit 3 5 1 In 10µF AN6545 AN6545SP 2 Out 1 4 3 10µF F STB The number in are the pin numbers of the AN6545SP using at a low temperature, it is recommended to use capacitors with low internal impedance (for example, tantalum · When capacitors) for output capacitors. ■ Characteristics Curve II –VI VOUT –Ta 4 VI=12V 5.2 Output Voltage VOUT (V) Input Current II (mA) (Iout=0mA) 3 2 1 5.1 5.0 4.9 4.8 0 0 2 4 6 8 10 12 14 –40 16 Input Voltage VI (V) 0 40 VOUT –VSTB 120 160 PD –Ta 8 1.5 VI=12V (1.45W) Power dissipation PD (W) 7 Output Voltage VOUT (V) 80 Ambient Temperature Ta (˚C) 6 5 4 3 2 When Mounted on PCB; 10mm × 10mm, With Cu Foil, ø3cm Al Substrate Used 1.0 0.5 Single Unit 1 0 0 0 1 2 3 Strobe Pin Voltage VSTB (V) 0 50 100 125 Ambient Temperature Ta (˚C) 150