ADP1111ANZ-5 Analog Devices Inc, ADP1111ANZ-5 Datasheet
ADP1111ANZ-5
Specifications of ADP1111ANZ-5
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ADP1111ANZ-5 Summary of contents
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FEATURES Operates from Input Voltage Range 72 kHz Frequency Operation Utilizes Surface Mount Inductors Very Few External Components Required Operates in Step-Up/Step-Down or Inverting Mode Low Battery Detector User Adjustable Current Limit Internal 1 ...
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ADP1111–SPECIFICATIONS Parameter QUIESCENT CURRENT INPUT VOLTAGE COMPARATOR TRIP POINT VOLTAGE OUTPUT SENSE VOLTAGE COMPARATOR HYSTERESIS OUTPUT HYSTERESIS OSCILLATOR FREQUENCY DUTY CYCLE SWITCH ON TIME SW SATURATION VOLTAGE STEP-UP MODE STEP-DOWN MODE FEEDBACK PIN BIAS CURRENT SET PIN BIAS CURRENT GAIN ...
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ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage SW1 Pin Voltage SW2 Pin Voltage Feedback Pin Voltage (ADP1111) Switch Current Maximum Power Dissipation Operating Temperature Range ADP1111A Storage Temperature Range Lead Temperature (Soldering, 10 sec) TYPICAL APPLICATION SUMIDA CD54-220K 22µH 3V INPUT ...
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ADP1111–Typical Characteristics 1.4 1.2 1 0.4 0.2 0 0.1 0.2 0.4 0.6 I CURRENT – A SWITCH Figure 2. Saturation Voltage vs. I Step-Up Mode 2.0 1.8 1.6 1.4 1.2 ...
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ON TIME 7.1 7.0 6.9 6.8 6.7 6.6 – TEMPERATURE – C Figure 8. Switch ON Time vs. Temperature 58 56 DUTY CYCLE – TEMPERATURE – C ...
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ADP1111 350 300 BIAS CURRENT 250 200 150 100 50 0 – TEMPERATURE – C Figure 14. Set Pin Bias Current vs. Temperature THEORY OF OPERATION The ADP1111 is a flexible, low-power, switch-mode power supply (SMPS) controller. The ...
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INDUCTOR SELECTION–STEP-UP CONVERTER In a step-up or boost converter (Figure 18), the inductor must store enough power to make up the difference between the input voltage and the output voltage. The power that must be stored is calculated from the ...
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ADP1111 As previously mentioned, the switch voltage is higher in step- down mode than in step-up mode current and is therefore a function For most applications value of 1 recommended. SW ...
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Figure 15. Aluminum Electrolytic Figure 16. Tantalum Electrolytic Figure 17. OS-CON Capacitor If low output ripple is important, the user should consider the ADP3000. Because this device switches at 400 kHz, lower peak current can be used. Also, the higher ...
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ADP1111 CIRCUIT OPERATION, STEP DOWN (BUCK) MODE) The ADP1111’s step down mode is used to produce an output voltage that is lower than the input voltage. For example, the output of four NiCd cells (+4.8 V) can be converted to ...
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Input Output Output Voltage Voltage Current ( 6.5 ...
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ADP1111 This occurs in the step-up mode when the following condition is met OUT DIODE < − − where DC is the ADP1111’s duty cycle. When this relationship exists, the inductor ...
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The circuit of Figure 27b may produce multiple pulses when approaching the trip point due to noise coupled into the SET input. To prevent multiple interrupts to the digital logic, hysteresis can be added to the circuit (Figure 27). Resistor ...
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ADP1111 Voltage-Controlled Positive-to-Negative Converter By including an op amp in the feedback path, a simple positive- to-negative converter can be made to give an output that is a linear multiple of a controlling voltage, Vc. The op amp, an OP196, ...
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... REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS. Figure 35. 8-Lead Plastic Dual In-Line Package (PDIP) Narrow Body (N-8) Dimensions shown in inches and (millimeters) ORDERING GUIDE Output 1 Model Voltage ADP1111ANZ- ADP1111ANZ-3.3 3.3 V ADP1111ANZ ADP1111ARZ ADJ ADP1111ARZ- ADP1111ARZ-12-REEL 12 V ADP1111ARZ-3.3 3.3 V ADP1111ARZ ADP1111ARZ-5-REEL 5 V ...