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TK65025 Datasheet(PDF) 2 Page - TOKO, Inc |
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TK65025 Datasheet(HTML) 2 Page - TOKO, Inc |
2 / 12 page Page 2 February, 1997 Toko, Inc. TK65025 SYMBOL PARAMETER TEST CONDITION MIN TYP MAX UNIT V IN Supply Voltage Range (Note 2, 5) 0.90 1.60 V IB(Q) No Load Battery Current (Note 5) VI = 1.3 V, IO = 0 mA, TA = 25 °C 80 120 µA I (V IN) Quiescent current into V IN pin V IN = 1.3 V IO = 1mA, TA = 25 °C 20 35 µA I (VOUT) Quiescent current into VOUT pin VOUT = VOUT (REG) +20 mV, TA = 25 °C22 34 µA ƒ (OSC) Internal oscillator frequency T A = 25 °C 70 83 102 kHz ∆ƒ (OSC)/∆T Temperature stability of oscillator V IN = 1.3 V , IO = 1mA 800 ppm/ °C VOUT(REG) Regulation threshold of VOUT TA = 25 °C 2.85 3.00 3.10 V ∆V OUT/∆T Temperature stability of V OUT(REG) VIN = 1.3 V, IO = 1mA 250 ppm/ °C ∆V OUT(LOAD) Load regulation of VOUT(REG) (Note 2) VIN = 1.3 V, IO = 0→4 mA 0 mV ∆V OUT(LINE) Line regulation of V OUT(REG) ∆V IN = 0.25 V, IO = 1mA -20 0 20 mV V OUT(RST) V OUT during reset transition V IN = 1.3 V, TA = 25 °C 2.48 2.70 V VRST(HI) Logic High of RESET w/r/t VOUT VO ≥ 2.6 V -100 mV V RST(LO) Logic Low of RESET V O ≤ 2.5 V 100 mV ∆V OUT(RST) V OUT(RST) threshold hysteresis T A = 25 °C45 mV R SW(ON) On-resistance of switch, IND pin V OUT = VOUT(REG), TA = 25 °C 1 ohm D (OSC) On-time duty ratio of oscillator 36 50 64 % η Converter efficiency (Notes 4,5) VI = 1.3 V, IO = 4 mA 74 % V UVL Undervoltage lockout threshold T A = 25 °C I O = 1mA 0.74 V I O(MAX) Maximum I O for converter (Notes 3,5) VI ≥ 1.1 V, VO Regulated 4 mA ELECTRICAL CHARACTERISTICS Over operating temperature range and supply voltage range, unless otherwise specified. ABSOLUTE MAXIMUM RATINGS All pins except GND ................................................... 6 V Power Dissipation (Note1) ................................. 400 mW Storage Temperature Range ................... -55 to +150 °C TEST CIRCUIT Note 1: Derate at 0.8 mW/oC for operation above TA = 25 oC ambient tempera- ture, when heat conducting copper foil path is maximized on the printed circuit board. When this is not possible, a derating factor of 1.6 mW/ °C must be used. Note 2: Specifications are tested to 1.6 V. Device is suitable for dual cell operation. Note 3: Maximum load current depends on inductor value. With a 0.9 V or 1.0 V supply voltage, 4 mA can be obtained with a smaller inductor value. Note 4: Output ripple depends on filter capacitor values, ESRs and the connection of (V OUT) sense point. Note 5: When using specified TOKO inductor and Schottky diode with VF=0.45 V @ 100 mA. By trading component size for better specifications, using Schottky diode with lower forward voltage, efficiency greater than 80% can be attained. Inductor L: Toko 682AE-014 or equivalent Diode D: LL103A or equivalent Capcitors C N: CU; CD: Panasonic TE series, ECS-T0JY106R 1 3 RESET GND 6 4 VIN VOUT 2 5 GND IND S S S + S C N 300 k Ω RESET 15 10 µF 10 µF S S 1K 220 pF 10 µF S D VO IO 1K V I I B + S S L + S = 95 µH CU CD R N R R R S C S ROF Operating Temp. Range ............................-20 to + 80 °C Junction Temperature ........................................... 150 °C |
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