isl9221 Intersil Corporation, isl9221 Datasheet
isl9221
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isl9221 Summary of contents
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... Data Sheet Dual Input Lithium Ion Battery Charger with OVP USB Bypass and 10mA LDO The ISL9221 Lithium Ion charging IC is designed to meet the charging requirements of most of today’s handheld devices. The IC provides two inputs for either USB connection where the current is limited by the USB standard or for powering/charging from a power adapter ...
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... USB Linear ON-resistance CHARGE CURRENT IVDC Pin Output Voltage VDC Constant Current Accuracy VDC Trickle Charge Current 2 ISL9221 Thermal Information Thermal Resistance (Typical, Notes 1, 2) θ 4x3 DFN Package . . . . . . . . . . . . . . . . . . . . 41 Maximum Junction Temperature (Plastic Package +150°C Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C Pb-free reflow profile ...
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... LOGIC INPUT AND OUTPUT EN Pin Logic Input HIGH EN Pin Logic Input LOW EN Pin Internal Pull-down Resistance CHG and PRR Sink Current LINEAR REGULATOR Output Voltage Voltage Regulation Accuracy Dropout (VDC LDO Current Limit 3 ISL9221 SYMBOL CONDITIONS 3.8V IUSB BAT 29.4kΩ,V = 2.7V to 3.8V ...
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... USB input pin. VUSB VUSB Input pin. This pin is usually connected to a USB port power connector. The maximum input voltage is 28V. However, the internal OVP circuitry will trip at 5.4V. 4 ISL9221 TYPE AI Input pin from car adapter or AC/DC adapter AI Input pin from USB host device ...
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... The CHG pin can also be used to drive an LED to indicate to the user the battery is being charged. GND Ground pin. This provides the ground path for all internal circuits. OFF ON VDC BAT ISL9221 VUSB GND FIGURE 1. APPLICATIONS CIRCUIT TO MCU TO BATTERY FN6541.1 April 3, 2008 ...
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... VUSB to BAT is 600mΩ. If the entire USB current limit of 465mA is being supplied to the battery, the drop across the charging FET could be more than 300mV. Thus, the voltage at the USB pin needs to be maintained above ~4.5V. 6 ISL9221 LDO BYPASS THERM VOLTAGE/CURRENT CONTROLLER ...
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... This protects the charger from excessive thermal stress at high input voltages. 7 ISL9221 Power-Good Condition Even if there is a power present at one of the power input pins, the charger will not deliver power to the battery for charging if three of the conditions below are not met: • ...
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... MAX IMIN I CHG EOC FIGURE 3. TIMING DIAGRAM 8 ISL9221 Fault Summary If VDC is greater than 6.8V, then the VDC_LDO and charging FETs are turned off until VDC < V (Where H high (off), unless VUSB is valid. If VUSB is greater than 5.4V, then the VUSB bypass and CHARGE charging FETs are turned off until VUSB < V DISABLE will be asserted high (off), unless VDC is valid ...
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... IUSB CHARGER: ON PPR: ON CHG: ON LDO: OFF BYP: ON VMAX = VBAT LOW VMAX = VBAT FIGURE 4. STATE DIAGRAM FOR CHARGER FUNCTIONS 9 ISL9221 POWER OFF CHARGER: OFF PPR: OFF CHG: OFF LDO: OFF BYP: OFF VDC GOOD, VUSB GOOD VDC GOOD VUSB BAD ...
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... X X Yes Yes Yes X X Yes NOTES: 4. ”X” denotes that the input is either less than V 5. VDC_V is a nominal 6.8V OVP 6. VUSB_V is a nominal 5.4V OVP 10 ISL9221 USB INPUT PGOOD, < < VUSB V > POR POR IN OVP < V OVP X X Don’t ...
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... 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. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 11 ISL9221 L12.4x3 12 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE 2X (COMPLIANT TO JEDEC MO-229-VGED-4 ISSUE C) 0 ...