an8015sh Panasonic Corporation of North America, an8015sh Datasheet
an8015sh
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an8015sh Summary of contents
Page 1
... AN8015SH Single-channel step-down, step-up, or inverting use DC-DC converter control IC Overview The AN8015SH is a single-channel DC-DC converter control IC using the PWM method. This IC can provide any one output type from among step-down, step-up and inverting output. Its operating supply voltage range is wide and its consumption current is small ...
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... AN8015SH Pin Descriptions Pin No. Symbol 1 CT Pin for connecting oscillator timing capacitor 2 RT Pin for connecting oscillator timing resistor 3 S.C.P. Pin for connecting the time constant setting capacitor for short-circuit protection 4 GND Grounding pin 5 Out Open collector type output pin 6 V Power supply voltage application pin ...
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... C 150 pF OUT(max 200 kHz, dV OUT V 3 200 kHz, dT1 OUT 200 kHz, dT2 OUT AN8015SH Min Typ Max Unit 2.386 2.46 2.534 0 2.8 3.1 3.4 V ...
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... AN8015SH Electrical Characteristics at V Parameter Short-circuit protection circuit block Input threshold voltage Input standby voltage Input latch voltage Charge current Comparator threshold voltage Whole device Total consumption current Total consumption current 2 Terminal Equivalent Circuits Pin No. Equivalent circuit 1 V REF To PWM input OSC comp ...
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... The output terminal of the error amplifier. The source current is about 120 A, and the sink PWM current is about 8 mA. Correct the frequency characteristics of the gain and the phase by connecting a resistor and a ca- pacitor between this terminal and IN terminal. AN8015SH I for the reference REF I ...
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... AN8015SH Application Notes [1] Main characteristics Reference voltage temperature characteristics 2. 2.49 2.48 2.47 2.46 2. Ambient temperature T a Oscillation frequency temperature characteristics 200 195 190 185 180 Ambient temperature T a Maximum duty ratio Oscillation frequency 100 R 5 ...
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... Total consumption current line regulation 3 REF 2.5 2.0 1 Timing resistance 0. 0.84 0.83 0.82 0.81 0. AN8015SH Total consumption current 5 Supply voltage 5 ...
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... AN8015SH Application Note (continued) [2] Timing chart 3.1 V typ. Lock-out release V rise time REF REF Power supply Triangular wave (CT) on S.C.P. terminal voltage Output transistor collector waveform (Out) Figure 1. PWM comparator operation waveform Reference voltage (V ) REF Short-circuit protection input threshold level Comparator threshold level S ...
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... V, it sets the latch circuit, cuts off the output drive transistor, and sets the dead-time at 100 OUT REF V PWM comparator R1 R3 input OUT 2) If output is negative AN8015SH and negative, is obtained by OUT REF IN REF REF PWM comparator Error amp. input 8 ...
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... AN8015SH Application Notes (continued) [3] Function descriptions (continued) 5. Low input voltage malfunction prevention circuit (U.V.L.O.) This circuit protects the system from destruction or deterioration due to control malfunction when the supply voltage is low in the transient state of power on/off. The low input voltage malfunction prevention circuit detects the internal reference voltage which changes according to the supply voltage level ...
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... 500 k 100 k Oscillation 5.6 k Figure 5. Timing resistance recommended condition with the reference voltage of 1. all the time. FB becomes approximately 1.1 A when R CHO AN8015SH is 5 order T value to T Recommended operating condition Timing resistance released, and the ...
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... AN8015SH Application Notes (continued) [5] Time constant setting method for short-circuit protection circuit with joint-use of soft start/timer latch type (continued) When the external capacitor C S output drive transistor by enabling the low input voltage malfunction prevention circuit, and sets the dead-time at 100%. The low input voltage malfunction prevention circuit is once enabled, the S.C.P. terminal voltage is discharged to approximately 30 mV but the latch circuit is not reset unless the power is turned off ...
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... Voltage Regulators Application Circuit Examples 1. Chopper method step-down type 120 k 1 000 pF 3.6 k 200 Chopper method inverting type 120 k 3 000 pF 200 0.1 F 8 130 k 0.1 F 9.1 8 0.1 F AN8015SH 25.5 k SBD 4.5 k SBD ...
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... AN8015SH Application Circuit Examples (contined) 3. On/off circuit example 1) Method to cut V line CC Standby current Method to cut S.C.P. line Consumption current when output off 1 Using method Since the on/off circuit is not incorporated in this IC required to add on/off circuit externally to provide a standby function ...