 |
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
|
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
BQ25619 Datasheet(PDF) 16 Page - Texas Instruments |
|
||||||||||||||||||||||||||||||
BQ25619 Datasheet(HTML) 16 Page - Texas Instruments |
|
|
16 / 59 page  16 BQ25619 SLUSDF8A – JUNE 2019 – REVISED JULY 2019 www.ti.com Product Folder Links: BQ25619 Submit Documentation Feedback Copyright © 2019, Texas Instruments Incorporated Feature Description (continued) 8.3.3.3 Input Source Type Detection (IINDPM Threshold) After poor source detection, the device runs input source detection through the PSEL pin. The PSEL pin sets input current limit 0.5 A (HIGH) or 2.4 A (LOW). After input source type detection is completed, PMID_GOOD pin is asserted to HIGH and PG_STAT bit goes to 1. With I2C, after input source type detection is completed, an INT pulse is asserted to the host. in addition, the following register bits are updated: 1. Input Current Limit (IINDPM) register is updated from detection result 2. VBUS_STAT bit is updated to indicate USB or other input source 3. PG_STAT bit is updated to indicate good adapter plugs in The host can over-write the IINDPM register to change the input current limit if needed. 8.3.3.3.1 PSEL Pins Sets Input Current Limit The device with PSEL pin directly takes the USB PHY device output to decide whether the input is USB host or charging port. When the device operates in host-control mode, the host needs to IINDET_EN bit set to 1 to update the IINDPM register. When the device is in default mode, PSEL value updates IINDPM in real time. Table 1. Input Current Limit Setting from PSEL INPUT DETECTION PSEL PIN INPUT CURRENT LIMIT (ILIM) VBUS_STAT USB SDP High 500 mA 001 Adapter Low 2.4A 011 8.3.3.4 Input Voltage Limit Threshold Setting (VINDPM Threshold) The device has two mode to set VINDPM threshold. • Fixed VINDPM threshold. The VINDPM is in default set at 4.5 V (3.9 V - 5.4 V). • VINDPM threshold tracks the battery voltage to optimize the converter headroom between input and output. When it is enabled in REG07[1:0], the actual input voltage limit is the higher of the VINDPM setting in register and VBAT + offset voltage in VINDPM_BAT_TRACK[1:0]. 8.3.3.5 Power Up Converter in Buck Mode After the input current limit is set, the converter is enabled and the HSFET and LSFET start switching. The system voltage is powered from converter instead of the battery. If battery charging is disabled, the BATFET turns off. Otherwise, the BATFET stays on to charge the battery. The device provides soft-start when system rail is ramping up. When the system rail is below VBAT_SHORT, the input current is limited to the lower of 200 mA or IINDPM register setting. The system load shall be appropriately planned not to exceed the 200-mA IINDPM limit. After the system rises above VBAT_SHORTZ V, the device input current limit is the value set by IINDPM register. As a battery charger, the device deploys a highly efficient 1.5-MHz step-down switching regulator. The fixed frequency oscillator keeps tight control of the switching frequency under all conditions of input voltage, battery voltage, charge current and temperature, simplifying output filter design. The converter supports PFM operation by default for fast transient response during system voltage regulation and better light load efficiency. The PFM_DIS bit disables PFM operation. 8.3.3.6 HIZ Mode with Adapter Present By setting EN_HIZ bit to 1 with adapter, the device enters high impedance state (HIZ). In HIZ mode, the system is powered from battery even with good adapter present. The device is in the low input quiescent current state with Q1 RBFET, REGN LDO and the bias circuits off. |
Número de pieza similar - BQ25619_V01 |
|
Descripción similar - BQ25619_V01 |
|
|
Enlace URL |
| Política de Privacidad |
| ALLDATASHEET.ES |
| ¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Intercambio de Enlaces | Lista de Fabricantes All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Spanish ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
