AN8017SA PANASONIC | Alldatasheet
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Technical content
1.8-volt 2-channel step-up DC-DC converter control IC n 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 1.8 V so that it can operate with two dry batteries. In addition, since it uses the 16-pin surface mounting type package with 0.65 mm pitch, it is suitable for a miniaturized highly efficient potable power supply. n Features
- Wide operating supply voltage range (1.8 V to 14 V)
- Incorporating a high precision reference voltage circuit (allowance: – 2%)
- Control in a wide output frequency range is possible (20 kHz to 1 MHz)
- Built-in wideband error amplifier (single gain bandwidth: 10 MHz typical)
- A built-in timer latch short-circuit protection circuit (charge current: 1.1 mA typical)
- Incorporating an under-voltage lock-out circuit (U.V.L.O.) (circuit operation-starting voltage: 1.67 V typical)
- Dead-time is variable
- Flatness of switching current can be obtained by staggering the turn-on timing of each channel
- Built-in unlatch function When DT1 pin is low level or DT2 pin is high level, independent turn-off is possible.
- Incorporating an on/off control function (active-high control input, standby mode current: 1 mA maximum)
- Parallel operation is possible
- Totem pole output
- Output source-current: -50 mA maximum (Constant current output with a less supply voltage fluctuation is possible by connecting an external resistor to pin 6 and pin 11)
- Output sink-current: +80 mA maximun n Applications
- LCD displays, digital still cameras, and PDAs SSOP016-P-0225A 0.5–0.2 (1.0) 0° to 10° 5.0–0.2 4.4–0.2 6.4–0.3 1.2–0.20.1–0.1 0.65(0.225) 0.22 +0.10 - 0.05 0.15 +0.10-0.05 Seating plane Unit: mm
AN8017SA Voltage Regulators n Pin Descriptions n Block Diagram RB16 Out17 GND8 Off 15 IN+2 14 FB2 13 1.19 V H L FB1 4 IN-1 3 V REF OSC1 DT15 V CC DT2 12 S.C.P. 2 U.V .L.O. Error amp.1 Error amp.2 S.C.P. comp. V REF Unlatch2 Unlatch1 QR S Triangular wave oscillation Reference voltage source V REF On/off control Latch V CC 1.19 V 1.19 V 0.9 V 0.9 V V CC PWM1 0.9 V 0.22 V 0.2 V 0.9 V V REF V REF RB211 Out210PWM2 Pin No. Symbol Description
1 OSC Pin for connecting a oscillation timing
2 S.C.P. Pin for connecting the time constant set- ting capacitor for short-circuit protection 3I N -1 Inverting input pin to error amplifier 1 block
4 FB1 Output pin of error amplifier 1 block
5 DT1 PWM1 block dead-time setting pin
6 RB1 Out1 block output source current
setting resistor connection pin
7 Out1 Out1 block push-pull type output pin
Pin No. Symbol Description
8 GND Grounding pin
9V CC Power supply voltage application pin
10 Out2 Out2 block push-pull type output pin
11 RB2 Out2 block output source current
setting resistor connection pin
12 DT2 PWM2 block dead-time setting pin
13 FB2 Output pin of error amplifier 2 block
14 IN +2 Error amplifier 2 block noninverting
15 Off On/off control pin
16 V REF Reference voltage output pin
Voltage Regulators AN8017SA n Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage V CC 15 V Off terminal allowable application voltage VOFF 15 V IN-1 terminal allowable application voltage *2 V IN-1 6V IN+2 terminal allowable application voltage *2 V IN+2 6V Supply current I CC ¾ mA Output source current I SO(OUT) -50 mA Output sink current I SI(OUT) +80 mA Power dissipation *1 PD 135 mW Operating ambient temperature T opr -30 to +85 °C Storage temperature T stg -55 to +150 °C n Recommended Operating Range Parameter Symbol Range Unit Supply voltage V CC 1.8 to 14 V Off control terminal application voltage VOFF 0 to 14 V Output source current I SO(OUT) -40 (minimum) mA Output sink current I SI(OUT) 70 (maximum) mA Timing resistance R T 1 to 51 k W Timing capacitance C T 100 to 10 000 pF Oscillation frequency f OUT 20 to 1 000 kHz Short-circuit protection time constant CSCP 1 000 (minimum) pF setting capacitance Output current setting resistance R B 180 to 15 000 W Note) 1. Do not apply external currents or voltages to any pins not specifically mentioned. For the circuit currents, '+' denotes current flowing into the IC, and '-' denotes current flowing out of the IC. 2. Except for the power dissipation, operating ambient temperature, and storage temperature, all ratings are for Ta = 25°C. 3.*1: Ta = 85 °C. For the independent IC without a heat sink. Note that applications must observe the derating curve for the relationship between the IC power consumption and the ambient temperature. *2: VIN-1 , VIN+2 = VCC when VCC < 6 V. n Electrical Characteristics at VCC = 2.4 V, CREF = 0.1 mF, Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit Reference voltage block Reference voltage V REF IREF = - 0.1 mA 1.166 1.19 1.214 V Input regulation with input fluctuation Line VCC = 1.8 V to 14 V ¾ 15 30 mV Load regulation Load I REF = - 0.1 mA to -1 mA -20 -5 ¾ mV U.V.L.O. block Circuit operation start voltage V UON 1.59 1.67 1.75 V
AN8017SA Voltage Regulators n Electrical Characteristics at VCC = 2.4 V, CREF = 0.1 mF, Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit Error amplifier 1 block Input threshold voltage 1 V TH1 1.16 1.19 1.22 V Input bias current 1 I B1 ¾ 0.2 0.8 mA High-level output voltage 1 V EH1 0.83 0.93 1.03 V Low-level output voltage 1 V EL1 ¾¾ 0.2 V Output source current 1 I SO(FB)1 -61 -47 -33 mA Output sink current 1 I SI(FB)1 33 47 61 mA Error amplifier 2 block Input threshold voltage 2 V TH2 1.16 1.19 1.22 V Input bias current 2 I B2 ¾ 0.2 0.8 mA High-level output voltage 2 V EH2 0.83 0.93 1.03 V Low-level output voltage 2 V EL2 ¾¾ 0.2 V Output source current 2 I SO(FB)2 -61 -47 -33 mA Output sink current 2 I SI(FB)2 33 47 61 mA Oscillator block Output off threshold voltage V TH(OSC) 0.8 0.9 1.0 V Output 1 block Oscillation frequency 1 f OUT1 R T = 12 kW , CT = 330 pF 185 205 225 kHz Output duty ratio 1 Du 1 73 78 83 % High-level output voltage 1 V OH1 IO = -10 mA, RB = 820 W 1.4 ¾¾ V Low-level output voltage 1 V OL1 IO = 10 mA, RB = 820 W¾ ¾ 0.2 V Output source current 1 I SO(OUT)1 V O = 0.7 V, RB = 820 W- 40 -30 -20 mA Output sink current 1 I SI(OUT)1 V O = 0.7 V, RB = 820 W 20 ¾¾ mA Pull-down resistance 1 R O1 20 30 40 k W Output 2 block Oscillation frequency 2 f OUT2 R T = 12 kW , CT = 330 pF 185 205 225 kHz Output duty ratio 2 Du 2 72 77 82 % High-level output voltage 2 V OH2 IO = -10 mA, RB = 820 W 1.4 ¾¾ V Low-level output voltage 2 V OL2 IO = 10 mA, RB = 820 W¾ ¾ 0.2 V Output source current 2 I SO(OUT)2 V O = 0.7 V, RB = 820 W- 40 -30 -20 mA Output sink current 2 I SI(OUT)2 V O = 0.7 V, RB = 820 W 20 ¾¾ mA Pull-down resistance 2 R O2 20 30 40 k W PWM1 block Output full-off input threshold voltage 1 VT0-1 Duty = 0% ¾ 0.28 0.30 V Output full-on input threshold voltage 1 VT100-1 Duty = 100% 0.65 0.72 ¾ V Input current 1 I DT1 V DT1 = 0.5 V -1.1 - 0.5 ¾m A
Voltage Regulators AN8017SA n Electrical Characteristics at VCC = 2.4 V, CREF = 0.1 mF, Ta = 25 °C (continued) Parameter Symbol Conditions Min Typ Max Unit PWM2 block Output full-off input threshold voltage 2 VT0-2 Duty = 0% 0.65 0.72 ¾ V Output full-on input threshold voltage 2 VT100-2 Duty = 100% ¾ 0.28 0.30 V Input current 2 I DT2 V DT2 = 0.2 V -1.1 - 0.5 ¾m A Unlatch circuit 1 block Input threshold voltage 1 V THUL1 0.15 0.20 0.25 V Unlatch circuit 2 block Input threshold voltage 2 V THUL2 0.8 0.9 1.0 V Short-circuit protection circuit block Input standby voltage V STBY ¾ 60 120 mV Input threshold voltage 1 V THPC1 0.8 0.9 1.0 V Input threshold voltage 2 V THPC2 0.17 0.22 0.27 V Input latch voltage V IN ¾ 60 120 mV Charge current I CHG V SCP = 0 V -1.43 -1.1 - 0.77 mA On/off control block Input threshold voltage V ON(TH) 0.8 1.0 1.3 V Whole device Output off consumption current I CC(OFF) R B = 820 W, duty = 0% ¾ 7.0 9.8 mA Latch mode consumption current I CC(LA) R B = 820 W¾ 5.6 7.8 mA Standby current I CC(SB) ¾¾ 1 mA
- Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Symbol Conditions Min Typ Max Unit Reference voltage block V REF temperature characteristics V REFdT Ta = -30°C to +85°C -1 ¾+ 1% Over-current protection drive current IOC ¾- 11 ¾ mA U.V.L.O. block Reset voltage V R ¾ 0.8 ¾ V Error amplifier 1/2 blocks V TH temperature characteristics V THdT Ta = -30°C to +85°C - 0.3 ¾+ 0.3 mV/ °C Open-loop gain A V ¾ 57 ¾ dB Single gain bandwidth f BW ¾ 10 ¾ MHz Output 1/2 blocks RB terminal voltage V B ¾ 0.36 ¾ V Frequency supply voltage characteristics fdV -1 ¾+ 1% Frequency temperature characteristics fdT -3 ¾+ 3%
AN8017SA Voltage Regulators n Terminal Equivalent Circuits Pin No. Equivalent circuit Description I/O
1 OSC: O
The terminal used for connecting a timing capaci- tor/resistor to set oscillation frequency. Use a capacitance value within the range of 100 pF to 10 000 pF and a resistance value within the range of 1 kW to 51 kW . Use an oscillation frequency in the range of 20 kHz to 1 MHz. In a parallel synchronous operation, the channel 2 output stops when this pin becomes 0.9 V or more. (Refer to the "Application Notes, [7]" section.) 2 S.C.P.: O The terminal for connecting a capacitor to set the time constant of the timer latch short-circuit protec- tion circuit. Use a capacitance value in the range of 1 000 pF or more. The charge current I CHG is 1.1 mA typical. 3I N -1: I The inverting input pin for error amplifier 1 block. n Electrical Characteristics at VCC = 2.4 V, CREF = 0.1 mF, Ta = 25°C (continued)
- Design reference data (continued) Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Symbol Conditions Min Typ Max Unit Short-circuit protection block Comparator threshold voltage V THL ¾ 1.19 ¾ V On/off control block Off terminal current I OFF ¾ 23 ¾m A QS Latch
0.2 V R
1.19 V R
1.1 mA Output cut-off V CC 2 kW 100 W V CC 1.19 V
Voltage Regulators AN8017SA n Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit Description I/O
4 FB1: O
The output pin for error amplifier 1 block. The source current is -47 mA and the sink current is 47 mA. Correct the frequency characteristics of the gain and the phase by connecting a resistor and a capacitor between this terminal and GND.
5 DT1: I
The pin for setting channel 1 output maximum duty ratio. If this terminal is set at a voltage of 0.20 V or less, FB1 terminal becomes low-level voltage and the protective function for channel 1 output short-cir- cuit will stop (Unlatch function).
6 RB1: I
The pin for connecting a resistor for setting channel 1 output current. Use a resistance value in the range of 180 W to 15 kW . The terminal voltage is 0.36 V (at RB1 = 820 W ).
7 Out1: O
The pin is push-pull type output terminal. The absolute maximum ratings of output current are -50 mA for the source current and +80 mA for the sink current. A constant current output with less fluctuation with power supply voltage and dispersion can be ob- tained by the resistor externally attached to RB1 pin. I SO(OUT)1 = 68 · V RB1 [A]R B1
8 GND: ¾
9V CC : ¾ The supply voltage application terminal Use the operating supply voltage in the range of 1.8 V to 14 V. V CC IN-1 1.19 V 47 mA OSC PWM 47 mA V CC FB1 0.20 V OSC PWM V CC 120 W 30 kW Out1 V CC ISO(OUT)1 30 kW RB1
AN8017SA Voltage Regulators n Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit Description I/O
10 Out2: O
The pin is push-pull type output terminal. The absolute maximum ratings of output current are -50 mA for the source current and +80 mA for the sink current. A constant current output with less fluctuation with power supply voltage and dispersion can be ob- tained by the resistor externally attached to RB2 pin. I SO(OUT)2 = 68 · V RB2 [A]R B2
11 RB2: I
The pin for connecting a resistor for setting channel 2 output current. Use a resistance value in the range of 180 W to 15 kW . The terminal voltage is 0.36 V (at RB2 = 820 W ).
12 DT2: I
The pin for setting channel 2 output maximum duty ratio. If this terminal is set at a voltage of 0.9 V or more, FB2 terminal becomes high-level voltage and the protective function for channel 2 output short-cir- cuit will stop (Unlatch function).
13 FB2: O
The output pin for error amplifier. The source current is -47 mA and the sink current is 47 mA. Correct the frequency characteristics of the gain and the phase by connecting a resistor and a capacitor between this terminal and GND.
14 IN +2: I
The noninverting input pin for error amplifier 2 block. V CC ISO(OUT)2 30 kW RB2 V CC 120 W 30 kW Out2 V CC FB2 0.9 V OSC PWM 0.9 V V CC IN+2 1.19 V 47 mA OSC PWM 47 mA 100 W V CC 1.19 V
15 Off: I
The terminal for on/off control. can be suppressed to a value of 1 mA or less.
16 V REF :O
V REF and GND for phase compensation. power dissipation of package, PD . the following points when an n-channel MOSFET is driven directly.
- Select an n-channel MOSFET having a low input
by amplifying with inverters as shown in figure 1. Figure 1. Output boost circuit example
- Select an n-channel MOSFET having a low gate
using operating supply voltage. using the transformer as shown in figure 2.
- The wiring for ground line should be taken as wide as possible and grounded separately from the power system.
- The input filter capacitor should be arranged in a place as close to VCC and GND pin as possible so as not to allow
switching noise to enter into the IC inside.
- The wiring between the Out terminal and switching device (transistor or MOSFET) should be as short as possible
to obtain a clean switching waveform.
- In wiring the detection resistor of the output voltage, the wiring for the low impedance side should be longer.
range. However, this allowable range is design reference value and not the guaranteed value. Figure 2. Gate drive voltage increasing method
Voltage Regulators AN8017SA 700 582 100 135 200 233 300 400 338 500 600 0 25 85 125 Ambient temperature Ta (°C) Power dissipation PD (mW) 50 75 100 Independent IC without a heat sink R th(j-a) = 295.6°C/W Glass epoxy board (50 · 50 · t0.8 mm3) R th(j-a) = 171.8°C/W n Application Notes [1] PD ¾ Ta curves of SSOP016-P-0225A PD ¾ Ta [2] Main characteristics V REF temperature characteristics Frequency characteristics 1.185 1.195 -30 Ta (°C) V REF (V)1.190 -10 10 30 50 70 90 10k 1k 10k 100k R T (W ) fOUT (Hz) 100k C T = 100 pF C T = 330 pF C T = 0.01 mF
AN8017SA Voltage Regulators V CC (V) ICC(OFF) (mA) 2 4 6 8 10 12 14 100 1k 10k R B (W ) ICC(OFF) (mA) n Application Notes (continued) [2] Main characteristics (continued) ISO(OUT) ¾ RB ISI(OUT) ¾ RB Du 1 ¾ VDT1 Du 2 ¾ VDT2 ICC(OFF) ¾ VCC ICC(OFF) ¾ RB 100k10k1k100 R B (W ) ISO(OUT) (mA) V CC = 1.8 V V CC = 2.4 V V CC = 14 V V CC = 7 V 100k10k1k100 R B (W ) ISI(OUT) (mA) V CC = 1.8 V V CC = 2.4 V V CC = 14 V V CC = 7 V 100 0.2 V DT1 (V) Du 1 (%) 100 0.2 V DT2 (V) Du 2 (%)
Voltage Regulators AN8017SA FB1 OSC DT1 Output short-circuit DT2OSCFB2 Channel 1 1.6 V 1.22 V V CC terminal voltage waveform S.C.P. terminal voltage waveform Out1 terminal voltage waveform Out2 terminal voltage waveform Channel 2 n Application Notes (continued) [3] Timing chart
used as the reference voltage for the error amplifier 1 block and the error amplifier 2 block.
- Triangular wave oscillation block
comparator for channel 2 side within the IC inside. given to the noninverting input. connection as shown in figure 2. given to the noninverting input. connection as shown in figure 3. Figure 1. Tiangular wave oscillation waveform
1.19 V To PWM
Figure 2. Connection method of error ampifier 1 block Figure 3. Connection method of error ampifier 2 block
Voltage Regulators AN8017SA n Application Notes (continued) [4] Function descriptions (continued) 5. Timer latch short-circuit protection circuit This circuit protects the external main switching devices, flywheel diodes, and choke coils, etc. from destruction or deterioration if overload or short-circuit condition of power supply output lasts for a certain time. The timer latch short-circuit protection circuit detects the output level of the error amplifier. When the output voltage of DC-DC converter drops and the output level of error amplifier 1 block exceeds 0.9 V or the output level of error amplifier 2 block exceeds 0.22 V, the low-level output is given and the timer circuit is actuated to start the charge of the external protection-enable capacitor. If the output of the error amplifier does not return to a normal voltage range by the time when the voltage of this capacitor reaches 1.22 V, it sets the latch circuit, and cuts off the output drive transistor, and sets the dead-time to 100%. 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. Until the supply voltage reaches 1.67 V during its rise time, it cuts off the output drive transistor, and sets the dead-time to 100%. At the same time, it holds the S.C.P. terminal (pin 2) and DT1 terminal (pin 5) to low-level and the OSC terminal (pin 1) and DT2 terminal (pin 12) to high-level. 7. PWM comparator block The PWM comparator controls the on-period of the output pulse according to the input voltage. The PWM1 and PWM2 block are reverse logic relation. The PWM1 block turns on the output transistor during the period when the triangular wave of OSC terminal (pin 1) is lower than any lower one of the FB1 (pin 4) terminal voltage and the DT1 (pin 5) terminal voltage. The PWM2 block turns on the output transistor during the period when the triangular wave of OSC terminal (pin 1) is higher than any higher one of the FB2 (pin 13) terminal voltage and the DT2 (pin 12) terminal voltage. The maximum duty ratio is variable from the outside. Also, the soft start which gradually extends on-period of the output pulse is activated by connecting a capacitor in parallel with the resistor-dividing for the maximum duty ratio setting. 8. Unlatch block The unlatch circuit 1 block fixes the FB1 terminal (pin 4) at low-level at the DT1 terminal (pin 5) is 0.20 V or less. The unlatch circuit 2 block fixes the FB2 terminal (pin 13) at high-level at the DT2 terminal (pin 12) is 0.9 V or less. Consequently, by controlling the DT terminal voltage, it is possible to operate only one channel or to start and stop each channel in any required sequence. 9. Output 1 block This block uses a totem pole type output circuit. By connecting the current setting resistor to the RB1 terminal, it is possible to arbitrarily set a constant-current source-output having a small fluctuation with the supply voltage. The available constant-current source-output is up to 50 mA. The breakdown voltage of output terminal is 15 V. 10. Output 2 block This block uses a totem pole type output circuit. By connecting the current setting resistor to the RB2 terminal, it is possible to arbitrarily set a constant-current source-output having a small fluctuation with the supply voltage. The available constant-current source-output is up to 50 mA. The breakdown voltage of output terminal is 15 V.
Figure 4. PWM logic explanation chart same time, noise can be suppressed to a lower level by staggering the turn on timing. (pin 1) is lower than both of the FB1 (pin 4) terminal voltage and the DT1 (pin 5) terminal voltage. (pin 1) is higher than both of the FB2 (pin 13) terminal voltage and the DT2 (pin 12) terminal voltage.
error amplifier 2 output FB2 with the reference voltage of 0.18 V for channel 2 side at all the time. conductive state and the S.C.P. terminal is held to approximately 60 mV. comparator, the short-circuit protection comparator outputs the low-level signal to cut off the output transistor Q1. restarted by the on/off control.
1.19 V = ICHG · tPE
considered to be short-circuited state so that the S.C.P. time when applying the soft-start. Figure 5. S.C.P. terminal charging waveform
1.22 V Q1
Figure 6. Short-circuit protection circuit
Figure 7. Slave operation circuit example connected to each other as shown in figure 7, the ICs will operate at the same frequency. AN8018SA (open-collector output/each single-channel totem pole output) in parallel synchronous mode.
the Out1 becomes fully off state. Figure 8. Operation of short-circuit protection at parallel synchronous operation
- About the operation of short-circuit protection at parallel synchronous operation
the timer latch is applied to the IC which has that output, the output of other ICs will be also shut down. when the timer latch is applied to IC-1.
The equivalent circuit of error amplifier is shown in figure 11. The cut-off frequency is variable by changing the externally attached phase compensation capacitor CO1 . required to have a gain on the high frequency side or desired to lead a phase. Figure 11. Error amplifier equivalent circuit
1 M W To PWM
Figure 12. Error amplifier equivalent circuit (RO1 inserted)
1 M W
AN8017SA Voltage Regulators 180 1 10 100M f (Hz) V Ph ( ° ) 100 120 140 160 100 1k 10k 100k 1M 10M C O1 = 0.01 mF 10 W 1 W R O1 = 10 kW 1 kW 100 W f ¾ VPh f ¾ VPh 180 1 10 100M f (Hz) V Ph ( ° ) 100 120 140 160 100 1k 10k 100k 1M 10M C O1 = 1 000 pF 1 W 1 kW 100 W 10 W R O1 = 10 kW n AC Analysis Result
- Simulation circuit 1.19 V AC C O1 R O1 FB1 IN-1 f ¾ VBD f ¾ VBD -80 -60 1 10 100M f (Hz) V DB (dB) -40 -20 100 1k 10k 100k 1M 10M C O1 = 0.01 mF 10 W 1 W R O1 = 10 kW 100 W 1 kW -80 -60 1 10 100M f (Hz) V BD (dB) -40 -20 100 1k 10k 100k 1M 10M C O1 = 1 000 pF 10 W 1 W R O1 = 10 kW 100 W 1 kW
Voltage Regulators AN8017SA f ¾ Gain f ¾ Gain 180 1 10 100M f (Hz) Phase ( ° ) 100 120 140 160 100 1k 10k 100k 1M 10M R O1 = 0 C O1 = 1 mF 0.1mF 0.01 mF 0.001 mF 180 1 10 100M f (Hz) Phase ( ° ) 100 120 140 160 100 1k 10k 100k 1M 10M C O1 = 0.1 mF R O1 = 10 kW 1 kW
100 W 10 W 1 W
-80 -60 1 10 100M f (Hz) Gain (dB) -40 -20 100 1k 10k 100k 1M 10M R O1 = 0 C O1 = 1 mF 0.1 mF 0.001 mF 0.01 mF -80 -60 1 10 100M f (Hz) Gain (dB) -40 -20 100 1k 10k 100k 1M 10M C O1 = 0.1 mF 1 kW 100 W 10 W 1 W R O1 = 10 kW n AC Analysis Result (continued) f ¾ Phase f ¾ Phase
AN8017SA Voltage Regulators VO2 VIN R11 R10 R9 R8 C7 L1 Q1 R5 R4 R3 SBO1 SBO2 GND AN8017SA R13 On SW1 Off VO1 C11 C10 C1C2 R12 R2 R6 R7 R1
- Evaluation board n Application Circuit Examples
- Application circuit example 1 Output2 CTLC6 C1 C2 C10C11 R10 Input RB1 R12 R13 IN-1 S.C.P. OSC Off V CCGND Out1 Out2 DT1 FB1 FB2 RB2 RB2 IN+2 DT2 V REF SBD2 Output1 SBD1 AN8017SA
Voltage Regulators AN8017SA Input 1.8 V to 3.2 V Remote on/off control pin -10 V, 5 V, 18 V stop with high-level input. Input voltage range: 1.8 V to 3.2 V Oscillation frequency: 450 kHz 0.1 mF 0.1 mF 10 mF 10 mF 10 mF 0.1 mF 0.1 mF 1.19 V 330 pF 68 kW 5.1 kW 10 kW 0.1 mF 10 kW 75 kW 300 W 68 kW 22 kW 2SD0874 (2SD874*) 2SB1440 AN8018SA DT1 39 kW
5 V (STBY)
(max.) -10 V 10 mA (max.) 12 kW 10 mH IN+1 S.C.P. OSC Off V CCGND Out1 Out2 FB1 IN-1 FB2 RB2 820 W IN+2 DT2 V REF MA2Q738 (MA738*) MA2Q738 (MA738*) MA2Q738 (MA738 *) MA2Q738 (MA738*) 75 kW 47 kW22 kW 1.5 kW 0.1 mF 0.1 mF 0.1 mF 0.1 mF 1.19 V 68 kW 820 W 10 kW 0.1 mF 10 kW 68 kW 56 kW 22 kW 2SD0602 (2SD602*) 2SD0602 (2SD602*) AN8017SA RB1 51 kW 5 V 140 mA (max.) 18 V 35 mA (max.) 15 kW 10 mH 68 mH IN-1 S.C.P. OSC Off V CCGND Out1 Out2 DT1 FB1 FB2 RB2 820 W IN+2 DT2 V REF 10 mF 56 kW 3.9 kW 18 mH n Application Circuit Examples (continued)
- Application circuit example 2 (Circuit using the AN8017SA/AN8018SA) Note) *: Former part number