an8017sa Panasonic Corporation of North America, an8017sa Datasheet
an8017sa
Related parts for an8017sa
an8017sa Summary of contents
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... Voltage Regulators AN8017SA 1.8-volt 2-channel step-up DC-DC converter control IC I Overview The AN8017SA is a two-channel PWM DC-DC con- verter control IC that features low-voltage operation. This IC can obtain the step-up voltage with a small number of external components. The minimum operating voltage is as low as 1 that it can operate with two dry batteries. In addition, since it uses the 16-pin surface mounting type package with 0 ...
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... AN8017SA I Block Diagram 15 Reference On/off Off voltage source control V REF 4 FB1 Error amp.1 3 IN−1 1. FB2 S.C.P. comp. Error 0.22 V amp.2 14 IN+2 1. Pin Descriptions Pin No. Symbol Description 1 OSC Pin for connecting a oscillation timing resistor and capacitor 2 S.C.P. Pin for connecting the time constant set- ...
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... REF Symbol Conditions = − 0 REF REF = 1 Line − 0 −1 mA Load I REF V UON SDH00007CEB AN8017SA Rating −50 +80 135 −30 to +85 −55 to +150 Range 1 (maximum 100 to 10 000 000 180 to 15 000 = 25° ...
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... AN8017SA I Electrical Characteristics at V Parameter Error amplifier 1 block Input threshold voltage 1 Input bias current 1 High-level output voltage 1 Low-level output voltage 1 Output source current 1 Output sink current 1 Error amplifier 2 block Input threshold voltage 2 Input bias current 2 High-level output voltage 2 Low-level output voltage 2 ...
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... I R CC(LA CC(SB) Symbol Conditions = −30°C to +85° REFdT −30°C to +85° THdT SDH00007CEB AN8017SA = 25 °C (continued) Min Typ Max 0.65 0.72 0.28 0.30 −1.1 − 0.5 0.15 0.20 0.25 0.8 0.9 1.0 60 120 0.8 0.9 1.0 0.17 0.22 0.27 60 120 −1.43 −1.1 − 0.77 ...
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... AN8017SA I Electrical Characteristics at V • Design reference data (continued) Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Short-circuit protection block Comparator threshold voltage On/off control block Off terminal current I Terminal Equivalent Circuits Pin No. ...
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... RB1 30 kΩ pin × I SO(OUT)1 GND: Grounding terminal The supply voltage application terminal 9 Use the operating supply voltage in the range of 1 SDH00007CEB AN8017SA Description = 820 Ω). B1 V RB1 [ I ...
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... AN8017SA I Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit 120 Ω 0.9 V FB2 0 IN+2 1. 100 Ω 8 Out2: The pin is push-pull type output terminal The absolute maximum ratings of output current are RB2 −50 mA for the source current and +80 mA for the sink current ...
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... [2] Since the output of the AN8017SA is assuming the bipolar transistor driving necessary to pay attention to the following points when an n-channel MOSFET is driven directly. 1. Select an n-channel MOSFET having a low input capacitance The AN8017SA is of the constant current (50 mA maxi- mum) output source current type circuit assuming the bipo- lar transistor driving ...
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... AN8017SA I Usage Notes (continued) 2. Select an n-channel MOSFET having a low gate threshold value The high-level output voltage of out pin of the − 1.0 V minimum, so that it is AN8017SA necessary to select a low V MOSFET having a suffi- T ciently low on-state resistance in accordance with the using operating supply voltage. ...
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... Independent IC without a heat sink 338 = 295.6°C/W R th(j−a) 300 233 200 135 100 100 (°C) Ambient temperature 100k 10k SDH00007CEB AN8017SA 125 Frequency characteristics = 100 330 0.01 µ 10k 100k R (Ω ...
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... AN8017SA I Application Notes (continued) [2] Main characteristics (continued) SO(OUT 2 1 100 1k 10k R (Ω) B DT1 100 0.2 0.3 0.4 0.5 0.6 V (V) DT1 CC(OFF ...
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... I Application Notes (continued) [3] Timing chart V terminal CC voltage waveform 1.6 V S.C.P. terminal voltage waveform Channel 1 Out1 terminal voltage waveform Channel 2 Out2 terminal voltage waveform Output short-circuit FB1 OSC DT1 FB2 OSC DT2 SDH00007CEB AN8017SA 1. ...
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... AN8017SA I Application Notes (continued) [4] Function descriptions 1. Reference voltage block This block is composed of the band gap circuit, and outputs the temperature compensated 1.19 V reference voltage. The reference voltage is stabilized when the supply voltage is 1 more. The reference voltage is also used as the reference voltage for the error amplifier 1 block and the error amplifier 2 block. ...
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... This block uses a totem pole type output circuit. By connecting the current setting resistor to the RB2 terminal possible to arbitrarily set a constant-current source-output having a small fluctuation with the supply voltage. The available constant-current source-output mA. The breakdown voltage of output terminal SDH00007CEB AN8017SA 15 ...
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... AN8017SA I Application Notes (continued) [5] About logic of PWM block The logic for channel 1 and channel 2 of this IC is reversed. Thereby an input current flatness is realized. At the same time, noise can be suppressed to a lower level by staggering the turn on timing. The PWM1 block turns on the output transistor during the period when the triangular wave of the OSC terminal (pin 1) is lower than both of the FB1 (pin 4) terminal voltage and the DT1 (pin 5) terminal voltage ...
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... Error amp.1 3 IN−1 1. FB2 Error amp.2 14 IN+2 1. SCP Short-circuit detection time t 1.22 0.06 Figure 5. S.C.P. terminal charging waveform U.V.L.O. 1.1 µA High-level detection comp. 1. S.C.P. comp. Figure 6. Short-circuit protection circuit SDH00007CEB AN8017SA has been charged SCP [V] PE Internal reference Latch Output cut-off t [s] 17 ...
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... Multiple instances of this IC can be operated in parallel. If the OSC terminals (pin 1) and Off terminals (pin 15) are connected to each other as shown in figure 7, the ICs will operate at the same frequency possible to operate this IC (the AN8017SA) with the two-channel 1.8-volt DC-DC converter control IC AN8018SA (open-collector output/each single-channel totem pole output) in parallel synchronous mode. ...
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... Q1 turns on and − OSC REF CE(sat) becomes approximately 1.1 V IC-2 latch IC-1 latch 1.19 V SDH00007CEB AN8017SA Since the OSC terminal voltage becomes higher than the DT1 terminal voltage, the Out1 becomes fully off state. Forced off state inside the IC 1. ...
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... AN8017SA I Application Notes (continued) [8] Setting of Off-terminal connection resistor The start circuit starts its operation when Q1 is turned on organization in which Q1 turns off/on when Q2 turns on/off in figure 9, the input voltage × R2 BEQ1 OFF Therefore, R can be set by: OFF = R2 · V − ...
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... SC · R (from between the FB1 terminal and C O1 << PWM IN− Figure 12. Error amplifier equivalent circuit (R SDH00007CEB AN8017SA << series as shown in figure 12 when MΩ To PWM 57dB inserted) ...
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... AN8017SA I AC Analysis Result • Simulation circuit IN−1 FB1 AC 1. Phase 180 = 10 kΩ 160 1 kΩ 100 Ω 140 10 Ω 120 100 0.01 µ 100 1k 10k 100k f (Hz) f Gain kΩ ...
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... −20 −40 −60 − 10M 100M SDH00007CEB AN8017SA f Phase = 10 kΩ kΩ 10 Ω 1 Ω 100 Ω = 0.1 µ 100 1k 10k 100k 1M 10M 100M f (Hz) f Gain = 0.1 µ kΩ ...
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... I Application Circuit Examples • Application circuit example 1 CTL • Evaluation board AN8017SA VO2 SBO2 GND L1 SBO1 C5 24 Input R10 R9 C10 C11 C8 C7 RB2 R8 AN8017SA VIN R11 R9 C8 R13 R12 Q2 R10 C11 L2 C10 Q1 C4 VO1 ...
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... I Application Circuit Examples (continued) • Application circuit example 2 (Circuit using the AN8017SA/AN8018SA) Input voltage range: 1 3.2 V Oscillation frequency: 450 kHz 0.1 µF 1.19 V 330 pF 1.19 V 0.1 µF Remote on/off control pin − stop with high-level input. 22 kΩ 68 kΩ 0.1 µF 0.1 µF 820 Ω ...
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... AN8017SA I New Package Dimensions (Unit: mm) • SSOP016-P-0225E (Lead-free package) 5. (0.225) Seating plane 26 ±0. +0.10 0.65 0.22 -0.05 SDH00007CEB (1.00) 0° to 10° 0.50 ±0.20 Seating plane ...
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