MAX8900A MAXIM [Maxim Integrated Products], MAX8900A Datasheet

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... The MAX8900_ is a high-frequency, switch-mode char- ger for a 1-cell lithium ion (Li+) or lithium polymer (Li-Poly) battery. It delivers up to 1.2A of current to the battery from 3.4V to 6.3V (MAX8900A) or 3.4V to 8.7V (MAX8900B). The 3.25MHz switch-mode charger is ide- ally suited to small portable devices such as headsets and ultra-portable media players because it minimizes component size and heat ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Table of ConTenTs (continued) Charge-Source Issues . . . . . . . . . . . . . . . . . . . . . ...

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... Operating voltage MAX8900A V falling, 400mV hysteresis (Note 4) UVLO IN When charging stops, V falling, 200mV IN IN2BAT hysteresis 0.40V hysteresis (MAX8900B) V rising OVLO IN 0.26V hysteresis (MAX8900A) Charger enabled, no switching I Charger enabled 3.25MHz Charger disabled, CEN = high +25NC GND +85NC ...

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... V A between T3 and T4 (Note 5) V between T1 and T3 THM RSTRT V between T3 and T4 THM V rising,180mV hysteresis PQLTH BAT V rising, 180mV typical hysteresis, BAT PQUTH MAX8900A/MAX8900B R = 2.87kI SETI V between T2 THM R = 6.81kI SETI and T4 (Figure 10 34.0kI SETI between T1 and T2 (Figure 10); the ...

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... THM T4 (thermistor temperature rising) V /AVL falling, 1% hysteresis THM T3 (thermistor temperature rising) V /AVL rising, 1% hysteresis THM T2 (thermistor temperature falling) V /AVL rising, 1% THM 0NC, MAX8900A T1 hysteresis (thermistor -15NC, MAX8900B temperature falling +25NC A THM = GND or AVL T = +85NC CEN ...

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... CEN is pulled low. For example, if CEN is low and the < V < then toggling CEN results in a nonoperating condition. IN UVLO-RISING ) 4. BAT-RSTRT BAT-RSTRT RSTRT = -40NC to +85NC, unless otherwise A MIN TYP MAX 0.025 0.05 0.38 0.001 1 0.01 0.01 0.15 0.25 0.001 1 0.01 4.6 5.0 5.1 95 6.7 +155 . For example, with the MAX8900A, V BAT-RSTRT UNITS %/ ...

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... THM A VL 1.004 1.002 1.000 0.998 0.996 0.994 0.992 0.990 7.5 -40 - AMBIENT TEMPERATURE (°C) INPUT SUPPLY CURRENT = 3.6V) vs. INPUT VOLTAGE (PREQUALIFICATION) 120 MAX8900A V CEN 100 V BAT R DNI (V) IN CHARGE CURRENT vs. BATTERY VOLTAGE 1 2.87kI SETI 1 ...

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... BAT BAT 4.5V BAT 0.2 0.4 0.6 0.8 1.0 1.2 CHARGE CURRENT (A) MAX8900B DC SWITCHING WAVEFORMS (I = 440mA) BAT MAX8900A toc13 20mV/div 5V/div 0V 500mA/div 0A 200ns/div CHARGE CURRENT vs. AMBIENT TEMPERATURE THM AVL R = 2.87kI SETI R = 6.81kI SETI 0 -40 - 110 135 160 185 T (° ...

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... EFFICIENCY vs. CHARGE CURRENT (CONSTANT-CURRENT MODE 4.0V BAT 3.0V BAT BAT 0.5 1.0 4.5 I (A) BAT MAX8900A toc17 34.7% OF AVL (T3) 2V/div 4.075V 4.2V 22.5% OF AVL (T4) 2V/div 0V 10I RESISTOR LOAD 200mA/div 0A 20ms/div EFFICIENCY vs. BATTERY VOLTAGE (CONSTANT-CURRENT MODE 5. 100mA BAT 3.0 3.5 4.0 4.5 V (V) BAT EFFICIENCY vs. BATTERY VOLTAGE ...

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... INPUT VOLTAGE (V) AVL VOLTAGE vs. INPUT VOLTAGE MAX8900x 2 V OVLO V CEN 1 V BAT R SETI (V) IN MAX8900_ CHARGE PROFILE (CHARGER RESTART) MAX8900A toc30 1.4 DONE CV DONE 1.2 1.0 V BAT 0.8 0 4.02k I SETI 3.57k I 0.4 BAT DNI C = 0.47µF CT 1300mAh BATTERY 0.2 I ...

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... BAT 1I BETWEEN SOURCE AND BAT 2ms/div BATTERY CONNECT MAX8900A toc32 6V 5V/div 4.2V 3.6V 2V/div 1.2A 500mA/div R = 2.87kI SETI 0A 20µs/div SOFT-START INTO RESISTIVE SOURCE 6.81kI SETI MAX8900A toc34 2V/div V = 4.8V, SOURCE BAT 1I BETWEEN SOURCE AND IN 2V/div 500mA/div 0A 2ms/div 5V/div 2V/div 500mA/div 0A ...

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... PVL PGND with a 1.0FF ceramic capacitor. Powering external loads from PVL is not recommended. Status Output 2. STAT2 is an open-drain output that has a 30V absolute maximum rating and a typical pulldown resistance of 25I. For the MAX8900A, STAT1 and STAT2 indicate different states as shown C1 STAT2 in Table 4 ...

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... Table 4. For the MAX8900B, STAT1, STAT2, and STAT3 indicate different operating states of the MAX8900_ as shown in Table 3. Status Output 3. STAT3 is an open-drain output that absolute maximum rating and a typical pulldown resistance of 10I. For the MAX8900A, STAT1 and STAT2 indicate different states as shown D2 STAT3 in Table 4 ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring 0.1FF V RANGE: IN 10V -22V TO +22V 0402 IN BAT 422I 422I * * * OFF 0.47FF 1.0FF 25V 6.3V 0603 0402 * STATUS INDICATORS ARE ...

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... TO_I DRV_OUT BAT_V BAT DIE_T BAT_T PVL BAT_T COLD: T1 THERMOMETER DECODE LOGIC COOL: T2 IBAT WARM OUT DEAD-BATTERY HOT: T4 CHARGER (I DBAT EN MAX8900A MAX8900B V OVLO V UVLO IN: D3 IN: D4 IN: D5 IN: D6 REVERSE- BATTERY PROTECTION INBP IN2BAT INBP: C4 INBP: C5 INBP: C6 BST LX: A3 ...

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... Detailed Description The MAX8900_ is a full-featured, high-frequency switch- mode charger for a 1-cell Li+ or Li-Poly battery. It delivers up to 1.2A to the battery from 3.4V to 6.3V (MAX8900A) or 3.4V to 8.7V (MAX8900B). Contact the factory for input operating voltage ranges up to +20V. The 3.25MHz switch-mode charger is ideally suited to small portable devices such as headsets and ultra-portable media play- ers because it minimizes component size and heat ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Setting the Prequalification Current and Done Threshold (DNI) As shown in Figure 5, a resistor from DNI to ground (R ) sets the prequalification current (I DNI ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring to enable the MAX8900_. CEN has an internal 200kI pulldown resistor. When disabled, the MAX8900_ supply current is reduced, the step-down converter high-side and low-side switches are ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring V TOO HIGH IN STAT1 = LOW STAT2 = LOW STAT3 = HI BAT V < OVLO TIMER = RESUME ANY CHARGING ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring V TOO HIGH IN STAT1 = HI-Z STAT2 = LOW BAT V < OVLO TIMER = RESUME ANY CHARGING STATE (DEAD BAT, ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Charger Disabled State When CEN is high or the input voltage is out of range, the MAX8900_ disables the charger. To exit this state, CEN must be ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring The MAX8900_ enters its done state after the charger has been in the top-off state for t switching charger is off and no current is delivered to ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Table 1. 2.44mm x 2.67mm x 0.64mm, 0.4mm Pitch WLP Thermal Characteristics FOUR-LAYER PCB (JESD51-9:2s2p) 1619mW Continuous Power Derate 20.2mW/NC above Dissipation +70NC/W 49.4NC 9NC/W ...

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... OPEN 1,800,000 2,400 SHORT 6,800 380,716 617,913 934,027 153,211 293,090 343,283 72,500 150,002 156,836 23,083 53,093 47,906 11,434 29,099 22,777 -10.2 -14.8 -8.7 -15.4 3.2 1.2 4.1 16.4 15.8 16.8 15.9 39.6 41.5 38.8 41.2 54.8 59.6 53.2 59.2 *CONTACT FACTORY FOR A 4.1V OPTION FOR V BATREG 4.075V 0°C for MAX8900A T1 = -15°C for MAX8900B 1 ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring A. BASIC THERMISTOR CONFIGURATION AVL: E5 AVL AVL IS THE INTERNAL R TB ANALOG SUPPLY THM THRM COLD: T1 COOL: T2 WARM: T3 HOT: ...

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... IN STAT1 and STAT2 are open-drain outputs that indicate the status of the MAX8900A as shown in Table 4. When the status outputs are used to communicate with a FP, pull them up to the system logic voltage (V create a signal that has a logic-high and logic-low state that the FP can easily interpret (Figure 2) ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring Inductor Selection Consider inductance, current rating, series resistance, physical size, and cost when selecting an inductor. These factors affect the converter’s efficiency, maximum output current, transient response ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring If the input voltage approaches the BAT voltage during fast-charge constant current state, the maximum current is no longer limited by the current loop, but by the ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring capacitor ( 0.1FF with a voltage rating of 10V or BST greater increased then maintain a ratio of less BST than ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring impedance), the voltage spike could be twice that of the nominal source voltage. In other words source with a high-Q LC tank circuit in the ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring list of guidelines in addition to Application Note 1891: Wafer-Level Packaging (WLP) and Its Applications maxim-ic.com/ucsp) to layout the MAX8900_ PCB. The guidelines at the top are ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring TOP VIEW SCALE DRAWING 5x6 BUMP ARRAY (30 BUMPS Figure ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring For the latest package outline information and land patterns www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. ...

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Switch-Mode Li+ Chargers with ±22V Input Rating and JEITA Battery Temperature Monitoring REVISION REVISION NUMBER DATE 0 1/10 Initial release 1 3/10 Corrected various items Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied ...