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ST1208 Fiches technique(PDF) 8 Page - Sitronix Technology Co., Ltd. |
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ST1208 Fiches technique(HTML) 8 Page - Sitronix Technology Co., Ltd. |
8 / 12 page ST1208 V1.1 8/12 2004/10/27 ! Absolute Maximum Ratings IN, OUT, EN1, EN2 to GND ........……..…....... -0.3V to + 6.0V SET, LED1, LED2, LED3 to GND ….… -0.3V to ( VIN + 0.3V ) C1N, C2N to GND .........................…..... -0.3V to ( VIN + 1V ) C1P, C2P to GND ...........................……... -0.3V to greater of .................................................. ....(VOUT + 1V) or (VIN + 1V) Continuous Power Dissipation (TA = +70°C) 16-Pin QFN ( de-rate 17 mW/°C above +70°C ) 1350 mW 16-Pin TSSOP ( de-rate 18 mW/°C above +70°C ) 1500 mW Operating Temperature Range ...….................-40°C to +85°C Storage Temperature Range .…....................-40°C to +125°C ! Electrical Characteristics Condition: VIN = VEN1 = VEN2 = 3.6 V, CIN = C1 = C2 = COUT = 1 uf, dropout current is 60 mA. ( 20 mA / LED X 3 ), LED Vf = 3.3 V, ISET = 125 uA, Charge pump switching ( TA = +25℃) Symbol Parameter Test Condition Min. Typ. Max. Unit VIN IN Operating Voltage - 2.7 - 5.0 V IIN Power Supply Current Switching, no load - 2.0 4.0 mA IOUT Maximum OUT Current VIN >=3.6 V, EN1 = EN2 = IN 100 - mA ILED Maximum LEDx Sink Current VIN >=3.3 V, ISET = 190 uA, EN1 = EN2 = IN 28 30 - mA IINS Shutdown Supply Current EN1 = EN2 = GND - 1 3 uA ILSS SET Leakage in Shutdown EN1 = EN2 = GND, TA = 25 ℃ - 0.01 0.1 uA ILLS LED Leakage in Shutdown EN1 = EN2 = GND, TA = 25 ℃ - 0.01 0.1 uA ISET SET Current Range 30 - 200 uA VIH EN1, EN2 Logic High Voltage VIN=2.7 V to 5.0 V 0.7 VIN - VIN V VIL EN1, EN2 Logic Low Voltage VIN=2.7 V to 5.0 V 0 - 0.2 VIN V IEN EN1, EN2 Input Current VENx = GND or 5.0 V, TA = 25 ℃ - 0.5 1.0 uA VLED LEDx Minimum Regulation Voltage (1.5x Mode) EN1 = EN2 = IN, ISET = 125 uA 200 300 400 mV VDP LEDx Dropout Voltage ISET = 125 uA - 20 30 mV 1x mode ( 1 X VIN - VOUT ) / IOUT @ VIN = 4.2 V, IOUT = 60 mA - 7 10 ROUT Open-Loop OUT Resistance 1.5x mode ( 1.5 X VIN - VOUT ) / IOUT @ VIN = 3.6 V, IOUT = 60 mA - 11 15 Ohm fSW Switching Frequency ± 20% 0.8 1.0 1.2 MHz TTS Thermal-Shutdown Threshold 20℃ hysteresis 130 160 190 ℃ VUV Undervoltage Lockout Threshold VIN rising or falling, 0.25V hysteresis 2.2 2.3 2.6 V EN1 = EN2 = IN 145 160 175 EN1 = IN, EN2 = GND 43 48 52 K SET to LEDx Current Ratio ( ILED / ISET ) ISET= 125 uA EN1 = GND, EN2 = IN 14 16 17 A/A A LEDx Current Accuracy EN1 = EN2 = IN, RSET = 4.8KOhm, TA = 0℃ ~ 85℃ - ±3 - % M LEDx Current Matching EN1 = EN2 = IN, ISET = 125 uA, TA = 0℃ ~ 85℃ ( Note 1 ) - ±3 - % η Peak efficiency in 1x mode IOUT = 60 mA, PLEDs / PIN X 100 % 80 88 - % Note1: LEDx current matching is define as : ( ILEDX - IAVG ) / IAVG X 100 %. |
Numéro de pièce similaire - ST1208 |
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Description similaire - ST1208 |
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