RT9719 RICHTEK [Richtek Technology Corporation], RT9719 Datasheet
RT9719
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RT9719 Summary of contents
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... Charging System Safety Device General Description The RT9719 is an integrated circuit (IC) designed to replace passive device in charging system with extra protection function optimized to protect low voltage system from up to 28V high voltage input. The IC monitors the input voltage to make sure all parameters are operating in normal range ...
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... GATEDRV External control pin for controlling the P-MOSFET by charging controller GND (Exposed pad) Function Block Diagram ACIN www.richtek.com 2 RT9719 ACIN CHRIN C IN 1µF GATEDRV ISENSE GND No Internal Connection. Analog Ground. The Input Power Source. The VIN can withstand up to 30V input. ...
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... Input OVP Reference Voltage INOVP Input OVP Hysteresis Input OVP Propagation Delay OTP Rising Thershold OTP Hysteresis DS9719-01 April 2011 (Note 1) (Note 4) Symbol Test Conditions UVLO When enable I As ACIN floating LEAKAGE RT9719 RT9719A RT9719 Min Typ Max Unit 2.5 2.7 2 100 -- mV μA -- 200 600 μ ...
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... RT9719 Parameter Power MOSFET R Between ACIN to DS(ON) ISENSE R Between ACIN to DS(ON) CHRIN Note 1. Stresses beyond those listed under These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note 2. θ ...
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... CHRIN R vs. Temperature DS(ON) 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 ACIN = 5V, ISENSE = Open, 0.8 CHRIN = 50mA, GATEDRV = 5V 0.6 -40 -25 - Temperature (°C) Supply Current vs. Temperature 120 100 ACIN = 5V, ISENSE = Open, CHRIN = Open, GATEDRV = 5V 0 -40 -25 - Temperature (°C) RT9719 4.3 4 110 125 110 125 www.richtek.com 5 ...
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... RT9719 OVP vs. Temperature 6.50 6.25 6.00 5.75 5.50 5.25 ACIN = 5V, ISENSE = Open, CHRIN = 1kΩ, GATEDRV = 5V 5.00 -40 -25 - Temperature (°C) Input OVP Recovery Delay CHRIN = 1kΩ, GATEDRV = ACIN (1V/Div) Time (1μs/Div) www.richtek.com 6 (1V/Div 110 125 ACIN CHRIN Input OVP Propagation Delay CHRIN = 1kΩ, GATEDRV = ACIN ...
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... VBAT pin. The GATEDRV pin of the SOC can control the MOSFET of the RT9719 to determine the level of the charge current. The power of the SOC is provided by the CHRIN pin of the RT9719. The RT9719 provides OVP function, ...
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... Ambient Temperature (°C) Figure 3. Derating Curves for RT9719 Packages www.richtek.com 8 Layout Consideration The RT9719 is a protection device. Careful PCB layout is necessary. For best performance, place all peripheral components as close to the IC as possible. A short connection is highly recommended. The following is JA guidelines should be strictly followed when designing a PCB layout for the RT9719 ...
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... SOT-23-6 Surface Mount Package RT9719 H L Dimensions In Inches Min Max 0.031 0.051 0.000 0.006 0.055 0.071 0.010 0.022 0.102 0.118 0.106 0.122 0.033 ...
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... RT9719 Symbol Richtek Technology Corporation Headquarter 5F, No. 20, Taiyuen Street, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5526789 Fax: (8863)5526611 Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design, specification or other related things if necessary without notice at any time ...