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SR10070 Datasheet(PDF) 4 Page - Sanyo Semicon Device |
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SR10070 Datasheet(HTML) 4 Page - Sanyo Semicon Device |
4 / 8 page SR10000 Series No.0001-4/8 Electrical Characteristics Overall Operating Characteristics at Ta = 25 °C, in the specified test circuit Ratings Parameter Symbol Conditions min typ max Unit Output voltage VOUT VIN=2V, IO=10mA 3.217 3.300 3.383 V Output voltage setting range VOSET VIN=VOSET×0.6, VDD=3.3V, IOUT=10mA 1.5 *2 V FB control voltage VFB 0.9 V Supply voltage VDD *3 1.8 10 V Operation start voltage VST IO=1mA 0.9 V VIN=2V, IO=0mA SR10060 29 41 µA VIN=2V, IO=0mA SR10030 45 64 µA VIN=2V, IO=0mA SR10020, SR10070 62 88 µA Current dissipation IDD VIN=2V, IO=0mA SR10040, SR10050 97 137 µA Standby current ISTB VIN=2V, VCE=0V 1 µA VIN=2V, IO=10mA SR10060 85 100 115 kHz VIN=2V, IO=10mA SR10030 153 180 207 kHz VIN=2V, IO=10mA SR10020, SR10070 255 300 345 kHz Oscillator frequency FOSC VIN=2V, IO=10mA SR10040, SR10050 425 500 575 kHz Efficiency EFFI 85 % CE high voltage VCEH 0.65 V CE low voltage VCEL 0.20 V PWM high voltage VPWMH SR10030, SR10060, SR10070 *4 VDD-0.2 V PWM low voltage VPWML SR10030, SR10060, SR10070 *4 VDD-1.0 V CE high current ICEH CE=VDD=3.3V 0.1 µA CE low current ICEL CE=0V 0.1 µA *2: The output setting maximum voltages are within 1/1.5 times the VDSS of the built-in MOSFET and within 1/1.5 times the VRRM of the Di as a general rule of thumb. As such, it must be verified during actual operation that they do not exceed the rated voltages. *3: VDD should be 1.8V or higher when VIN or other power source is supplying VDD since the output voltage and oscillating frequency become steady when VDD is set 1.8V or higher, although the built-in IC starts step-up voltage operation from VDD=0.8V. *4: For models SR10030, SR10060, and SR10070, the CE pin also serves to implement a PWM/PFM external switching function. When the voltage is VDD-0.2V or more, PWM control is exercised, and when it is VCEH or more but VDD-1.0V or less, PWM/PFM automatic switching at a duty ratio of 25% is controlled. Di Characteristics at Ta = 25 °C, in the specified test circuit Parameter Symbol Conditions min typ max unit Forward voltage 1 VF1 IF=1A 0.43 0.47 V Reverse current 1 IR1 SR10020, SR10030 SR10040, SR10060 VR=30V 40 200 µA Forward voltage 2 VF2 IF=1A 0.30 0.35 V Reverse current 2 IR2 SR10050, SR10070 VR=6V 600 µA Pin Functions Pin No. Pin Name Description 1A GND Ground pin for IC. 1B, 1C TR Source Source pin for TR 1D, 1E, 2D, 2E, 3E TR Drain, Di Anode Drain of TR and Anode of Diode 2A, 2B, 2C, 3A, 3B, 3C 4A, 4B, 4C,5B IC VDD Supply voltage for IC 3D IC EXT, TR Gate Gate for TR 4D, 4E, 5D, 5E Di Cathode Cathode of Diode and VOUT 5A IC CE Operation starts when chip enable pin is set to “high”. This pin also serves as a PWM/PFM selector for models SR10030, SR10060, and SR10070. 5C IC FB External resistance connecting pin for output voltage setting, internal control voltage: 0.9V typical |
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Similar Description - SR10070 |
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