ADP1882ARMZ-1.0-R7 Analog Devices Inc, ADP1882ARMZ-1.0-R7 Datasheet
ADP1882ARMZ-1.0-R7
Specifications of ADP1882ARMZ-1.0-R7
Related parts for ADP1882ARMZ-1.0-R7
ADP1882ARMZ-1.0-R7 Summary of contents
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FEATURES Power input voltage as low as 2. Bias supply voltage range: 2. 5.5 V Minimum output voltage: 0.8 V 0.8 V reference voltage with ±1.0% accuracy Supports all N-channel MOSFET power stages Available ...
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ADP1882/ADP1883 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Applications Circuit ............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 Boundary Condition .................................................................... 5 ESD ...
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... J Conditions ADP1882ARMZ-0.3/ADP1883ARMZ-0.3 (300 kHz) IN ADP1882ARMZ-0.6/ADP1883ARMZ-0.6 (600 kHz) ADP1882ARMZ-1.0/ADP1883ARMZ-1.0 (1.0 MHz μF to PGND 0.22 μF to GND ADP1882ARMZ-0.3/ADP1883ARMZ-0.3 (300 kHz) ADP1882ARMZ-0.6/ADP1883ARMZ-0.6 (600 kHz) ADP1882ARMZ-1.0/ADP1883ARMZ-1.0 (1.0 MHz 1 switching Q_BST + I COMP/EN < 285 mV BST, SD Rising V (see Figure 35 for temperature variation) DD Falling V ...
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ADP1882/ADP1883 Parameter Symbol OUTPUT DRIVER CHARACTERISTICS High-Side Driver Output Source Resistance Output Sink Resistance Rise Time Fall Time t Low-Side Driver Output Source Resistance Output Sink Resistance 2 Rise Time t 2 Fall Time t Propagation Delays ...
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ABSOLUTE MAXIMUM RATINGS Table 2. Parameter VDD to GND VIN to PGND FB, COMP/EN to GND DRVL to PGND SW to PGND BST to SW BST to PGND DRVH to SW PGND to GND θ (10-Lead MSOP) JA 2-Layer Board ...
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ADP1882/ADP1883 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 VIN High Input Voltage. Connect VIN to the drain of the upper-side MOSFET. 2 COMP/EN Output of the Internal Error Amplifier/IC Enable. When this ...
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TYPICAL PERFORMANCE CHARACTERISTICS 100 V = 5.5V 5.5V (PSM 5.5V 5.5V 13V (PSM 5.5V 13V 70 ...
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ADP1882/ADP1883 100 V = 5.5V/V = 5.5V (PSM 3.6V 5.5V/V = 16. 5.5V/V = 13V DD IN ...
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V = 16. 16. 13V 0.827 +125°C +125°C +25°C +25°C 0.825 –40°C –40°C 0.823 0.821 0.819 0.817 0.815 0.813 0.811 0.809 0.807 0.805 0.803 0.801 0.799 0.797 0.795 0 2k 4k0 6k ...
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ADP1882/ADP1883 0.804 0.803 0.802 0.801 0.800 0.799 0.798 V = 2.7V 2.7/3.6V 0.797 3.6V 3.6V TO 16. 5.5V 5.5/13V/16. 0.796 –40.0 –7.5 25.0 57.5 ...
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V = 13V 302 IN +125°C 298 +25°C 294 –40°C 290 0 0.8k 1.6k 2.4k 3.2k 4.0k 4.8k 5.6k 6.4k 7.2k 8.0k 8.8k 9.6k LOAD CURRENT ...
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ADP1882/ADP1883 1350 1300 1250 1200 1150 1100 1050 1000 V = 13V IN +125°C 950 +25°C –40°C 900 0 0.8k 1.6k 2.4k 3.2k 4.0k 4.8k 5.6k 6.4k 7.2k 8.0k LOAD CURRENT (mA) Figure 34. Frequency vs. Load Current, 1.0 MHz, ...
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V = 2.7V +125°C REG +25° 3.6V REG 720 –40° 5.5V REG 640 560 480 400 320 240 160 80 300 400 500 600 700 800 FREQUENCY (kHz) Figure 40. Internal Rectifier Drop vs. Frequency ...
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ADP1882/ADP1883 OUTPUT VOLTAGE 4 INDUCTOR CURRENT 1 SW NODE 3 CH1 5A Ω M400ns B CH3 10V CH4 100mV T 30.6% W Figure 46. CCM Operation at Heavy Load (See Figure 92 for Applications Circuit) OUTPUT VOLTAGE 2 ...
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OUTPUT VOLTAGE 2 12A NEGATIVE STEP 1 SW NODE 3 LOW SIDE 4 CH1 10A Ω B CH2 200mV M10µs W CH3 20V CH4 5V T 23.8% Figure 52. Negative Step During Heavy Load Transient Behavior—Forced PWM at Light Load, ...
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ADP1882/ADP1883 OUTPUT VOLTAGE 1 LOW SIDE 4 SW NODE 3 INDUCTOR CURRENT 2 B CH2 5A Ω CH1 1V M1ms W B CH3 10V CH4 2V T 63.2% W Figure 58. Soft Start and RES Detect Waveform T = 25°C ...
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VREG (V) Figure 64. Quiescent Current vs 5.1 5 Rev. 0 ...
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ADP1882/ADP1883 ADP1882/ADP1883 BLOCK DIAGRAM PRECISION ENABLE BLOCK VDD REF_ZERO COMP C SS SS_REF COMP/EN ERROR AMP FB 0.8V LOWER COMP CLAMP REF_ZERO t -TIMER ON TO ENABLE ALL BLOCKS BIAS BLOCK AND REF SW INFORMATION PFM VDD ...
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THEORY OF OPERATION The ADP1882/ADP1883 are versatile current-mode, synchronous step-down controllers that provide superior transient response, optimal stability, and current limit protection by using a constant on-time, pseudo-fixed frequency with a programmable current- sense gain, current-control scheme. In addition, these ...
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ADP1882/ADP1883 PROGRAMMING RESISTOR (RES) DETECT CIRCUIT Upon startup, one of the first blocks to become active is the RES detect circuit. This block powers up before a soft start begins. It forces a 0.4 V reference value at the DRVL ...
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Although the ADP1882/ADP1883 have only four discrete current- sense gain settings for a given R variable, Table 6 and Figure 71 ON outline several available options for the valley current setpoint based on various R values. ON Table 6. Valley ...
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ADP1882/ADP1883 SYNCHRONOUS RECTIFIER The ADP1882/ADP1883 employ an internal lower-side MOSFET driver to drive the external upper-side and lower-side MOSFETs. The synchronous rectifier not only improves overall conduction efficiency but also ensures proper charging to the bootstrap capacitor located at the ...
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VREG INFORMATION R Figure 77. Constant On-Time Timer The constant on time ( not strictly constant because it ON varies with V and V . However, this variation occurs in such IN OUT ...
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ADP1882/ADP1883 APPLICATIONS INFORMATION FEEDBACK RESISTOR DIVIDER The required resistor divider network can be determined for a given V value because the internal band gap reference (V OUT is fixed at 0.8 V. Selecting values for R T minimum output load ...
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Ceramic capacitors are known to have low ESR. However, the trade-off of using X5R technology is that up to 80% of its capaci- tance may be lost due to derating as the voltage applied across the capacitor is increased (see ...
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ADP1882/ADP1883 EFFICIENCY CONSIDERATIONS One of the important criteria to consider in constructing a dc-to-dc converter is efficiency. By definition, efficiency is the ratio of the output power to the input power. For high power applications at load currents up to ...
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Diode Conduction Loss The ADP1882/ADP1883 employ anticross conduction circuitry that prevents the upper-side and lower-side MOSFETs from conducting current simultaneously. This overlap control is beneficial, avoiding large current flow that may lead to irreparable damage to the external components of ...
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ADP1882/ADP1883 THERMAL CONSIDERATIONS The ADP1882/ADP1883 are used for dc-to-dc, step down, high current applications that have an on-board controller and on-board MOSFET drivers. Because applications may require load current delivery and be subjected to high ...
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Inductor Determine the inductor ripple current amplitude as follows: I Δ I ≈ LOAD = then calculate for the inductor value − × MAX OUT OUT L Δ ...
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ADP1882/ADP1883 Loss Calculations Duty cycle = 1.8/ 0.15 5.4 mΩ. ON (N2 (body conduction time). BODY(LOSS 0.84 V (MOSFET forward voltage 3.3 nF (MOSFET gate input capacitance). ...
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... LGF LGF LGF ADP1882ARMZ-0.6-R7/ LGG ADP1883ARMZ-0.6-R7 LGG LGG LGG LGG LGG LGG LGG LGG LGG LGG LGG LGG LGG LGG ADP1882ARMZ-1.0-R7/ LGH ADP1883ARMZ-1.0-R7 LGH LGH LGH LGH LGH LGH LGH LGH LGH LGH LGH LGH = 1/12 × ¼ × f CROSS SW ZERO ...
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ADP1882/ADP1883 Marking Code SAP Model ADP1882 LGH LGH 1 See the Inductor Selection section (see Table 9 2 560 μF Panasonic (SP-series mΩ, 3.7 A EEFUE0D561LR (4.3 mm × 7.3 mm × 4.2 mm). 3 270 μF ...
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LAYOUT CONSIDERATIONS The performance of a dc-to-dc converter depends highly on how the voltage and current paths are configured on the printed circuit board (PCB). Optimizing the placement of sensitive analog and power components are essential to minimize output ripple, ...
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ADP1882/ADP1883 SENSITIVE ANALOG COMPONENTS LOCATED FAR FROM THE NOISY POWER SECTION. SEPARATE ANALOG GROUND PLANE FOR THE ANALOG COMPONENTS (THAT IS, COMPENSATION AND FEEDBACK RESISTORS). BYPASS POWER CAPACITOR (C1) FOR VDD BIAS DECOUPLING AND HIGH FREQUENCY CAPACITOR (C2) AS CLOSE ...
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BOTTOM RESISTOR TAP TO THE ANALOG GROUND PLANE. VOUT SENSE TAP LINE EXTENDING BACK TO THE TOP RESISTOR IN THE FEEDBACK DIVIDER NETWORK (SEE FIGURE 82). THIS OVERLAPS WITH PGND SENSE TAP LINE EXTENDING BACK TO THE ANALOG PLANE (SEE ...
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ADP1882/ADP1883 IC SECTION (LEFT SIDE OF EVALUATION BOARD) A dedicated plane for the analog ground plane (GND) should be separate from the main power ground plane (PGND). With the shortest path possible, connect the analog ground plane to the GND ...
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TYPICAL APPLICATIONS CIRCUITS DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT HIGH VOLTAGE INPUT JP1 C ADP1882/ C 700pF C R VIN 70pF 38.1kΩ COMP/ 18.75kΩ OUT R2 15kΩ ...
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ADP1882/ADP1883 DUAL-INPUT, 300 kHz HIGH CURRENT APPLICATIONS CIRCUIT HIGH VOLTAGE INPUT JP1 C ADP1882/ C 1000pF VIN C 1 70pF 24.9kΩ COMP/ 7.5kΩ OUT R2 15kΩ GND 4 ...
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... OUTLINE DIMENSIONS IDENTIFIER ORDERING GUIDE 1 Model Temperature Range ADP1882ARMZ-0.3-R7 −40°C to +125°C ADP1882ARMZ-0.6-R7 −40°C to +125°C ADP1882ARMZ-1.0-R7 −40°C to +125°C ADP1882ARMZ-0.3-EVALZ ADP1882ARMZ-0.6-EVALZ ADP1882ARMZ-1.0-EVALZ ADP1883ARMZ-0.3-R7 −40°C to +125°C ADP1883ARMZ-0.6-R7 −40°C to +125°C ADP1883ARMZ-1.0-R7 −40°C to +125°C ADP1883ARMZ-0 ...
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ADP1882/ADP1883 NOTES ©2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08901-0-4/10(0) Rev Page ...