HP4554D8-435

HP4554 High Input Voltage Charger with OVP protection GENERAL DESCRIPTION FEATURES The HP4554 is a cost-effective, fully integrated high input voltage single-cell Li-ion battery charger. The charger uses a CC/CV charge profile required by Li-ion battery. The charger accepts an input voltage up to 24V but is disabled when the input voltage exceeds the OVP threshold, typically 6.8V, to prevent excessive power dissipation. The 24V rating eliminates the over-voltage protection circuit required in a low input voltage charger. The charge current and the Full-of-charge (FOC) current are programmable with external resistors. When the battery voltage is lower than 2.55V, the charger preconditions the battery with typically 20% of the programmed charge current. When the charge current reduces to the programmable FOC current level during the CV charge phase, an FOC indication is 𝐶𝐶𝐶𝐶𝐶𝐶 pin, which is an open-drain provided by the ������ output. An internal thermal foldback function protects the charger from any thermal failure. Two ������ and ������ 𝐶𝐶𝐶𝐶𝐶𝐶 ) allow simple indication pins ( 𝑃𝑃𝑃𝑃𝑃𝑃 interface to a microprocessor or LEDs. When no adapter attached, the charger draws less than 1μA leakage current from the battery. The HP4554 is available in Green DFN-2×2-8L               Complete Charger for Single-Cell-Li-ion or Polymer Batteries Integrated Pass Element and Current Sensor No External Blocking Diode Required Low Component Count and Cost Programmable Charger Current Programmable Full-of-Charger Current Charger Current Thermal Foldback for Thermal Protection 2.55V Trickle Charge Threshold 6.8V Input Over-Voltage Protection 24V Maximum Voltage for the Power Input Power Presence and Charge Indications Less than 1μA Leakage Current from the Battery When No Input Power Attached Less than 200uA Supply Current when Charging is terminated Available in Green DFN-2x2-8L Packages APPLICATIONS packages and is rated between -40 ℃ to +85 ℃ temperature range.      Mobile Phones Blue-Tooth Devices PDAs MP3 Players Stand-Alone Chargers  Other Handheld Devices PIN ASSIGNMENT HP4554(TOP VIEW) 1 8 2 7 3 GND VIN PPR CHG EN 4 6 5 BAT IREF IMIN GND DFN-2x2-8L HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 1 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection ORDER INFORMATION PART NO PACAKGE TEMPERATURE TAPE & REEL HP4554D8-42 DFN-2x2-8L -40 ~ +85℃ 4000/REEL HP4554D8-43 DFN-2x2-8L -40 ~ +85℃ 4000/REEL HP4554D8-435 DFN-2x2-8L -40 ~ +85℃ 4000/REEL HP4554D8-44 DFN-2x2-8L -40 ~ +85℃ 4000/REEL PART NUMBER RULES MARKING DESCRIPTION: HP4554□ 1 -□ 2 Code Description 1 □ Package: DFN-2x2-8L XXXX JYWA D8: DFN-2x2-8L Charge voltage: 2 □ 42/43/435/44: Battery charge “XXXX”: Part number, here is “4554”. voltage are 4.2V/4.3V/4.35V/4.4V “JYWA”: “J” stands for Internal Control Code, “Y” stands for Internal Control Code, “W” stands for the week of manufacturing, “A” stands for charge voltage. TYPICAL APPLICATION CIRCUIT VIN BAT C1 IREF ON RIMIN CHG VIN BAT C1 R1 LED1 R2 LED2 GND Figure 1.Typical application circuit interfacing to indication LEDs Component Description for Figure 1 IREF C2 PPR EN TO INPUT HP4554 HP4554 OFF IMIN TO BATTREY RIREF OFF ON IMIN TO BATTREY RIREF RIMIN C2 VCC R1 R2 TO MCU TO INPUT CHG PPR EN GND Figure 2.Typical application circuit with the indication signals interfacing to an MCU Component Description for Figure 2 PART DESCRIPTION PART DESCRIPTION C1, C2 1μF X5R ceramic cap C1, C2 1μF X5R ceramic cap R IREF 24KΩ,1% for 500mA charge current R IREF 24KΩ,1% for 500mA charge current R IMIN 270KΩ,1% for 40mA FOC current R IMIN 270KΩ,1% for 40mA FOC current R1, R2 1KΩ, 5% R1, R2 100KΩ, 5% HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 2 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection PIN DESCRIPTION PIN NO SYMBOL 1 VIN 2 ������ 𝑃𝑃𝑃𝑃𝑃𝑃 3 ������ 𝐶𝐶𝐶𝐶𝐶𝐶 4 ���� 𝐸𝐸𝐸𝐸 5 Open-drain Power Presence Indication. The open-drain MOSFET turns on when the input voltage is above the POR threshold but below the OVP threshold, and turns off otherwise. This pin is capable of sinking 15mA (MIN) current to drive an LED. The maximum voltage rating for this pin is 5.5V. This 𝐸𝐸𝐸𝐸 pin input. pin is independent on the ���� Open-drain Charge Indication. This pin outputs a logic low when a charge cycle starts and turns to high impedance when the full-of-charge (FOC) condition is qualified. This pin is able to sink 15mA (MIN) current to drive an LED. When the charger is disabled, the ������ 𝐶𝐶𝐶𝐶𝐶𝐶 pin outputs high impedance. Enable Input. This is a logic input pin to disable or enable the charger. Drive high to disable the charger. When this pin is driven to low or left floating, the charger is enabled. This pin has an internal 200kΩ pull-down resistor. GND System Ground. 6 IMIN 7 IREF 8 BAT FUNCTION Power Input. A 1μF or larger value X5R ceramic capacitor is recommended to be placed as close as possible to the input pin for decoupling purpose. Additional capacitance may be required to provide a stable input voltage. Full-of-Charge (FOC) Current Programming Pin. Connect a resistor between this pin and the GND pin to set the FOC current. The FOC current I MIN can be programmed by the following equation: 9700 𝐼𝐼𝑀𝑀𝑀𝑀𝑀𝑀 = + 4 (𝑚𝑚𝑚𝑚) 𝑅𝑅𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼 where R IMIN is in kΩ. The programmable range covers from 5mA to 120mA. FOC current will be influenced by battery internal impedance and results in a small drift. When programmed to less than 5mA, the stability is not guaranteed. Charge-Current Programming and Monitoring Pin. Connect a resistor between this pin and the GND pin to set the charge current limit determined by the following equation: 12000 𝐼𝐼𝑅𝑅𝑅𝑅𝑅𝑅 = (𝑚𝑚𝑚𝑚) 𝑅𝑅𝐼𝐼𝐼𝐼𝐼𝐼𝐼𝐼 where R IREF is in kΩ. The resistor should be placed very close to this pin. The IREF pin voltage also monitors the actual charge current during the entire charge cycle, including the trickle, constantcurrent, and constant-voltage phases. When disabled, V IREF = 0V. Charger Output Pin. Connect this pin to the battery. A 1μF or larger X5R ceramic capacitor is recommended for decoupling and stability purposes. When the ���� 𝐸𝐸𝐸𝐸 pin is pulled to logic high, the BAT output is disabled. ABSOLUTE MAXIMUM RATINGS (Note) SYMBOL V IN R θJA ITEMS VALUE UNIT Input Voltage -0.3~27 V Voltage of other PINs -0.3~6 V 118 ℃/W Thermal Resistance DFN-2x2-8L TJ Junction Temperature 150 ℃ T STG Storage Temperature -65 ~ +150 ℃ Package Lead Soldering Temperature (10s) 260 ℃ ESD MM Machine Mode 200 V ESD HBM Human Body Mode 8 KV T SOLDER Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect device reliability. HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 3 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection RECOMMANDED OPERATING RANGE SYMBOL ITEMS VALUE UNIT V MAX Maximum Supply Voltage ≤24 V V IN Operating Supply Voltage 4.55 to 6.10 V I REF Programmed Charge Current 20 to 700 mA T OPT Operating Temperature -40 to +85 ℃ TYPICAL CHARGE PROFILE Trickle CC CV 4.2V IREF Charge Voltage 75% IREF 2.55V 20% IREF Charge Current IMIN CHG indication CHG Time Figure 3. Typical Charge Profile HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 4 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection ELECTRICAL CHARACTERISTICS V IN =5V, R IMIN =243KΩ, T A =25℃, unless otherwise noted. SYMBOL ITEMS CONDITIONS MIN TYP MAX UNIT 3.4 3.9 4.2 V 3.1 3.6 3.9 V 100 150 mV Power-ON Reset V POR Rising POR Threshold V BAT =3.0V, R IREF =120KΩ, use V POR Falling POR Threshold indicate the comparator output. ������ 𝑃𝑃𝑃𝑃𝑃𝑃 to ������ 𝑃𝑃𝑃𝑃𝑃𝑃 to ������ 𝑃𝑃𝑃𝑃𝑃𝑃 to V IN -V BAT Offset Voltage V OS Rising Edge V BAT =4.5V, R IREF =120KΩ, use Falling Edge indicate the comparator output. V OVP OVP Threshold V BAT =4.5V, R IREF =120KΩ, use V OVPHYS OVP Threshold Hysteresis indicate the comparator output. V OS (1) 10 80 mV 6.5 6.80 7.1 V 170 250 300 mV Over-Voltage Protection Standby Current I VINSTD I BATSTD standby Mode VIN Pin Current Standby Mode BAT Pin Current Shutdown Current 𝐸𝐸𝐸𝐸 = L, R IREF =120KΩ V IN =5V, V BAT =4.5V, ���� 135 200 μA 𝐸𝐸𝐸𝐸 = L, R IREF =120KΩ V IN =5V, V BAT =4.5V, ���� 1.7 2 μA 200 μA I VINDIS Shutdown Mode VIN Pin Current V IN =5V, R IREF =120KΩ, Charger disabled 130 I VINASD Shutdown Mode VIN Pin Current V BAT =4.5V, V IN =4.3V 92 μA I BATASD Shutdown Mode BAT Pin Current V BAT =4.5V, V IN =4.3V 1.8 μA I VINUVLO UVLO Mode Supply Current V IN =V BAT =3.6V 88 μA I BATUVLO UVLO Mode BAT Pin Current V IN =V BAT =3.6V 1 μA Sleep Current I BATSLEEP BAT Pin Current Input is floating or 0V 1 μA Voltage Regulation V OUT Output Voltage R DS(ON) PMOS On Resistance 4.158 4.2 4.242 R IREF =120KΩ, 4.55V V OS 3. V IN < V OVP where the V OS is the offset voltage for the input and output voltage comparator, discussed shortly, and the V OVP is the over-voltage protection threshold given in the Electrical Characteristics table. All V POR , V OS , and V OVP have hysteresis, as given in the Electrical Characteristics table. The charger will not charge the battery if the input voltage is not in the power good range. Input and Output Comparator The charger will not be enabled unless the input voltage is higher than the battery voltage by an offset voltage V OS . The purpose of this comparator is to ensure that the charger is turned off when the input power is removed from the charger. Without this comparator, it is possible that the charger will fail to power down when the input is removed and the current can leak through the PFET pass element to continue biasing the POR and the Pre-Regulator blocks. PPR Indication ������ pin is an open-drain output to indicate the The 𝑃𝑃𝑃𝑃𝑃𝑃 HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 11 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection Dropout Voltage IREF Pin The constant current may not be maintained due to the R DS (ON) limit at a low input voltage. The worst case R DS(ON) is at the maximum allowable operating temperature. The IREF pin has the two functions as described in the Pin Description section. When setting the fast charge current, the charge current is guaranteed to have 10% accuracy with the charge current set at 100mA. When monitoring the charge current, the accuracy of the IREF pin voltage vs. the actual charge current has the same accuracy as the gain from the IREF pin current to the actual charge current. CHG Indication The ������ 𝐶𝐶𝐶𝐶𝐶𝐶 is an open-drain output capable of sinking at least 15mA current when the charger starts to charge, and turns off when the FOC current is ������ signal is interfaced either with a reached. The 𝐶𝐶𝐶𝐶𝐶𝐶 microprocessor GPIO or an LED for indication. EN Input ���� 𝐸𝐸𝐸𝐸 is an active-low logic input to enable the charger. 𝐸𝐸𝐸𝐸 pin to low or leave it floating to enable Drive the ���� the charger. This pin has a 200kΩ internal pull-down resistor so when left floating, the input is equivalent to logic low. Drive this pin to high to disable the charger. The threshold for high is given in the Electrical Characteristics table. Operation without the Battery The HP4554 relies on a battery for stability and works under LDO mode if the battery is not connected. With a battery, the charger will be stable with an output ceramic decoupling capacitor in the range of 1µF to 220µF. In LDO mode, its stability depends on load current, C OUT , etc. The maximum load current is limited by the dropout voltage 4.2V, the programmed IREF and the thermal foldback. Thermal Foldback The thermal foldback function starts to reduce the charge current when the internal temperature reaches a typical value of 115℃. HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Page 12 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection APPLICATION INFORMATION Input Capacitor Selection The input capacitor is required to suppress the power supply transient response during transitions. Mainly this capacitor is selected to avoid oscillation during the start up when the input supply is passing the POR threshold and the VIN-BAT comparator offset voltage. When the battery voltage is above the POR threshold, the V IN - V BAT offset voltage dominates the hysteresis value. Typically, a 1µF X5R ceramic capacitor should be sufficient to suppress the power supply noise. Output Capacitor Selection The criterion for selecting the output capacitor is to maintain the stability of the charger as well as to bypass any transient load current. The minimum capacitance is a 1µF X5R ceramic capacitor. The actual capacitance connected to the output is dependent on the actual application requirement. HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. Layout Guidance The HP4554 uses thermally-enhanced DFN packages that have an exposed thermal pad at the bottom side of the packages. The layout should connect as much as possible to copper on the exposed pad. Typically, the component layer is more effective in dissipating heat. The thermal impedance can be further reduced by using other layers of copper connecting to the exposed pad through a thermal via array. Each thermal via is recommended to have 0.3mm diameter and 1mm distance away from other thermal vias. Input Power Sources The input power source is typically a well-regulated wall cube with 1-meter length wire or a USB port. The HP4554 can withstand up to 24V on the input without damaging the IC. If the input voltage is higher than typically 6.8V, the charger stops charging. Page 13 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection PACKAGE OUTLINE Package DFN-2x2-8L Devices per reel 4000pcs Unit mm Package Dimension： D N5 e N8 D1 k E1 E L N4 TOP VIEW b N1 BOTTOM VIEW A A1 A2 SIDE VIEW Symbol Dimensions in Millimeters Dimensions in Inches Min Typ Max Min Typ Max A 0.700 0.750 0.800 0.028 0.0295 0.031 A1 0.000 0.025 0.050 0.000 0.001 0.002 A2 0.203 0.008 D 1.900 2.000 2.100 0.075 0.079 0.083 D1 1.100 1.200 1.300 0.043 0.047 0.051 E 1.900 2.000 2.100 0.075 0.079 0.083 E1 0.500 0.600 0.700 0.020 0.024 0.028 b 0.180 0.24 0.300 0.007 0.0095 0.012 e 0.500 k 0.200 L 0.250 HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. 0.020 0.008 0.350 0.450 0.010 0.014 0.018 Page 14 Sales@hypwr.com HP4554 High Input Voltage Charger with OVP protection REVISION HISTORY Version No. Date Description Preliminary 2018-02-08 - Initial preliminary release V0.1 2018-07-10 - Update typical performance characteristics V0.2 2018-08-22 - Update ordering information and PN rules V0.3 2018-10-08 - Update IMIN function description V0.4 2018-10-30 V0.5 2019-01-25 - Add 4.4V charge voltage V0.6 2019-04-12 - Update package information V0.7 2019-05-13 - Update electrical characteristics V0.8 2019-06-24 - Add programmed charge current V 1.0 2019-12-02 - Update marking description HP4554 Datasheet, 2019 V1.0 Hypower Microelectronics(Shanghai)Co., Ltd. - Update description of IMIN and IREF - Update electric parameters Page 15 Sales@hypwr.com