ISL6257HRZ Intersil, ISL6257HRZ Datasheet
ISL6257HRZ
Specifications of ISL6257HRZ
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ISL6257HRZ Summary of contents
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... RANGE (°C) ISL6257HRZ ISL6257HRZ -10 to +100 28 Ld 5x5 QFN L28.5×5 ISL6257HRZ-T ISL6257HRZ -10 to +100 28 Ld 5x5 QFN NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets; molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations ...
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Absolute Maximum Ratings DCIN, CSIP, CSON to GND -0.3V to +28V CSIP-CSIN, CSOP-CSON . . . . . . . ...
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Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT - PHASE = 5.0V, GND = PGND = 0V, ...
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Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT - PHASE = 5.0V, GND = PGND = 0V, ...
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Electrical Specifications DCIN = CSIP = CSIN = 18V, CSOP = CSON = 12V, ACSET = DCSET = 1.5V, ACLIM = VREF, VADJ = Floating VDD = 5V, BOOT - PHASE = 5.0V, GND = PGND = 0V, ...
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Typical Operating Performance FIGURE 5. AC AND DC ADAPTER DETECTION FIGURE 7. CHARGE ENABLE AND SHUTDOWN CHLIM=0.2V CHLIM=0.2V CSON=8V CSON=8V FIGURE 9. SWITCHING WAVE FORMS IN DISCONTINUOUS CONDUCTION MODE (DIODE EMULATION) 6 ISL6257 DCIN = 20V, 4S2P Li-Battery ...
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Typical Operating Performance ADAPTER REMOVAL ADAPTER REMOVAL FIGURE 11. ADAPTER REMOVAL FIGURE 13. ADAPTER INSERTION WITH A CHARGED BATTERY ISL6257 CHARGE CURVES 100 TIME (MINUTES) FIGURE 15. BATTERY CHARGE VOLTAGE AND CURRENT 7 ...
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Typical Operating Performance Adapter Current 2 Limit Mode System Load Current (Amps) FIGURE 17. LINE AND LOAD REGULATION IN NVDC MODE Functional Pin Descriptions BOOT Connect ...
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FB The negative feedback of the voltage amplifier which sets the output voltage at CSON. An internal resistor divider from CSON adjusts the voltage feedback signal in the ratio of 6:1 for CELLS = GND, 8:1 for CELLS = VDD ...
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SGATE ACSET ACPRN + - 1.26V VREF 152kΩ ADAPTER CURRENT ACLIM LIMIT SET 152kΩ ICOMP MIN VOLTAGE BUFFER VCOMP VREF 514kΩ gm1 - VADJ 514kΩ 2.1V VOLTAGE CELLS SELECTOR VDD VREF REFERENCE GND FB FIGURE 19. FUNCTIONAL BLOCK DIAGRAM 10 ...
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ADAPTER 100kΩ 130kΩ 11.5kΩ 10.2kΩ 1μF HOST VCC 100kΩ 100kΩ DIGITAL INPUT DIGITAL INPUT DIGITAL OUTPUT CSON 3KΩ ...
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Theory of Operation Introduction The ISL6257 includes all of the functions necessary to charge cell Li-Ion and Li-polymer batteries. A high efficiency synchronous buck converter is used to control the charging voltage and charging current up to ...
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TABLE 1. CELL NUMBER PROGRAMMING CELLS VDD GND Float Setting the Battery Charge Current Limit The CHLIM input sets the maximum charging current. The current set by the current sense-resistor connects between ...
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AC Adapter Detection Connect the AC adapter voltage through a resistor divider to ACSET to detect when AC power is available, as shown in Figure 20. ACPRN is an open-drain output and is high when ACSET is less than V ...
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Application Information The following battery charger design refers to the typical application circuit in Figure 20, where typical battery configuration of 3S2P is used. This section describes how to select the external components including the inductor, input and output capacitors, ...
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LGATE and the MOSFET can allow the gate to rise during the fast rising edge of voltage on the drain. MOSFETs with low threshold voltage (<1.5V) and low ratio of C and high ...
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CSNUB and RSNUB can be calculated from Equation 19: 2 --------------------------------- - ----------------------------------------- - SNUB SNUB ⋅ 2πf L ring Input Capacitor Selection The input capacitor absorbs the ripple current from ...
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Output LC Filter Transfer Functions The gain from the phase node to the system output and battery depend entirely on external components. Transfer function A (s) is shown in Equation 21 and Equation 22: LC ⎛ ⎞ s ------------- - ...
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The compensation network consists of the voltage error amplifier gm1 and the compensation network and R are internal divider resisters that set the output voltage. For a 3 cell battery ...
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-20 -40 F -60 0.01 0.1 1 FREQUENCY (kHz) FIGURE 26. CHARGE CURRENT LOOP BODE PLOTS C should be chosen using Equation 31 to set ICOMP /10. The crossover ...
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... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...
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... Dimensions D2 and E2 are for the exposed pads which provide improved electrical and thermal performance. 8. Nominal dimensions are provided to assist with PCB Land Pattern Design efforts, see Intersil Technical Brief TB389. 9. Features and dimensions A2, A3, D1, E1, P & θ are present when C L Anvil singulation method is used and not present for saw singulation ...