RT9519A RICHTEK [Richtek Technology Corporation], RT9519A Datasheet

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... Linear Single Cell Li-lon Battery Charger with Auto Power Path Management General Description The RT9519A is an integrated single cell Li-ion battery charger with Auto Power Path Management (APPM). No external MOSFETs are required. The RT9519A enters sleep mode when power is removed. Charging tasks are ...

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... To System Load Power Good Indicator Charge Indicator Chip Enable Suspend Normal Suspend Mode See ISETU 1.5A VIN Current Limit Function Block Diagram VIN ISETA ISET VSET ISETL USUS EN ISETU www.richtek.com 2 RT9519A 1 VIN C IN 2.2µF 17, 18, 19 SYS 2 PGOOD 3 CHG USUS 4.2V 15 VSET 4.05V 14 ...

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... Battery Regulation Set Input. Control by external GPIO 4.05V 4.2V, 200kΩ pull low. No Internal Connection. System Connect Pin. Connect this pin to System with a minimum 10μF ceramic capacitor to GND. VIN Suspend Control Input Suspend suspend. 200kΩ pull low. RT9519A Pin Function ) between ISETA and GND. ISETA CHG1 / ...

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... RT9519A Absolute Maximum Ratings ----------------------------------------------------------------------------------------------------- −0.3V to 28V Supply Voltage CHG, PGOOD ------------------------------------------------------------------------------------------------------------ −0.3V to 28V Other Pins ----------------------------------------------------------------------------------------------------------------- −0. CHG, PGOOD Continuous Current ---------------------------------------------------------------------------------- 20mA BAT Continuous Current (total in two pins) (Note 2) ----------------------------------------------------------- 2.5A Power Dissipation 25° WQFN-20L 3x3 ----------------------------------------------------------------------------------------------------------- 1.471W Package Thermal Resistance (Note 3) WQFN-20L 3x3, θ ...

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... REG T SD Δ Rising OVP IN Δ 5V, V OVP IN OVP − SHORT BAT SYS 1μF (1 PCHG TIMER 1μF FCHG TIMER RT9519A Min Typ Max 4.3 4.4 4.5 -- 0.2 0.35 -- 0.05 0.1 60 100 140 -- 2 -- 100 -- 1200 570 600 630 = 1kΩ 285 300 315 1.2 1.5 1.8 450 ...

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... RT9519A Parameter PGOOD Deglitch Time Input Over Voltage Blanking Time Pre-Charge to Fast-Charge Deglitch Time Fast-Charge to Pre-Charge Deglitch Time Termination Deglitch Time Recharge Deglitch Time Input Power Loss to SYS LDO Turn-Off Delay Time Pack Temperature Fault Detection Deglitch Time Short Circuit Deglitch Time ...

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... 5V Real Battery, ISETL = L, IN BAT V = 3.3V SYS I BAT (1A/Div) V SYS (2V/Div) V BAT (5V/Div (5V/Div) Time (10ms/Div) V Hot-plug Without NTC/Battery SYS (5V/Div) V BAT (5V/Div (5V/Div 5V Time (100ms/Div) RT9519A = 3. 10Ω = 3.3V 10Ω VP SYS www.richtek.com 7 ...

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... RT9519A V Hot-plug with Battery IN I BAT (500mA/Div) V SYS (5V/Div) V BAT (5V/Div 5V (5V/Div 3.3V Time (100ns/Div) V Over Voltage Protection IN I BAT (500mA/Div (5V/Div) V SYS (5V/Div) V BAT 15v (5V/Div) ISETL = L, R Time (500ms/Div Dropout Voltage vs. Temperature ...

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... Battery Voltage (V) DS9519A-02 April 2011 4.30 4.28 4.26 4.24 4.22 4.20 4.18 4.16 4.14 4.12 = 3.3V 4. 100 125 1040 1030 1020 1010 = 3.3V 0.6kΩ VP ISETA 1000 2.6 2.8 3.0 RT9519A Battery Regulation Voltage vs. Temperature V IN -50 -35 - Temperature (°C) Fastcharge Current vs. Battery Voltage 3.3V 3.00 3.22 3.44 3.66 Battery Voltage ( 0.6kΩ ISETA 3.88 4.10 www.richtek.com ...

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... RT9519A Applications Information The RT9519A is a fully integrated single-cell Li-ion battery charger ideal for portable applications. The internal thermal feedback circuitry regulates the die temperature to optimize the charge rate for all ambient temperatures. Other features include under voltage protection and over voltage protection ...

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... In the Suspend Mode, CHG is in high impedance and I USUS(MAX) - Too Cold Power Switch + For the RT9519A, there are three power scenarios: - Too Hot + (1)When a battery and an external power supply (USB or adapter) are connected simultaneously : If the system load requirements exceed that of the input current limit, the battery will be used to supplement the current to the load ...

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... RT9519A The external power supply provides the power to the system. Input DPM Mode For the RT9519A, the input voltage is monitored when the USB100 or USB500 is selected. If the input voltage is lower than V , the input current limit will be reduced to DPM stop the input voltage from dropping any further. This can prevent the IC from damaging improperly configured or inadequately designed USB sources ...

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... VIN CHG_MAX I + CHG_MAX SYS V IN _OC V D S(ON) IN _OC USB CHG_MAX I + CHG_MAX SYS I (USB) I VIN_OC VIN_OC I (USB) I DS(ON) VIN_OC SYS RT9519A I BAT CHG_MAX CHG_MAX − IN_OC SYS −I I SYS VIN_OC I BAT CHG_MAX CHG_MAX (USB) − I SYS − I (USB) VIN_OC www.richtek.com 13 ...

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... RT9519A VSET ISET vs I REG CHG For JEITA Battery Temperature Standard : CV regulation voltage will change at the following battery Temp ranges 0°C to 10°C and 45°C to 60°C CC regulation current will change at the following battery Temp ranges 0°C to 10°C and 45°C to 60°C 4.01 to 4.05 to 4.08V 0° ...

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... RT9519A Operation State Digram for Charging – BAT > V OS_H Sleep State Standby State Yes V < V < UVLO IN OVP & &USUS = L Charger Disable Any State or V < UVLO or V > OVP < BAT OS_H or USUS = ...

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... T is the maximum junction temperature, T J(MAX) the ambient temperature, and θ JA thermal resistance. For recommended operating condition specifications of the RT9519A, the maximum junction temperature is 125°C and T is the ambient temperature. The junction to ambient A thermal resistance, θ layout dependent. For WQFN- JA 20L 3x3 packages, the thermal resistance, θ ...

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... W-Type 20L QFN 3x3 Package Richtek Technology Corporation Taipei Office (Marketing) 5F, No. 95, Minchiuan Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)86672399 Fax: (8862)86672377 Email: marketing@richtek.com RT9519A 1 2 DETAIL A Pin #1 ID and Tie Bar Mark Options Dimensions In Inches Min Max 0.028 ...