![]() |
Electronic Components Datasheet Search |
|
LP8862-Q1 Datasheet(PDF) 19 Page - Texas Instruments |
|
|
|
LP8862-Q1 Datasheet(HTML) 19 Page - Texas Instruments |
19 / 37 page ![]() STANDBY POR = 1 VDDIO / EN = 1 BOOST START SOFT START ACTIVE 65 ms 50 ms SHUTDOWN FAULT RECOVERY FAULTS: - VIN_OCP - VIN_OVP - VIN_UVLO - TSD 100 ms FAULTS FAULTS VDDIO / EN = 0 VDDIO / EN = 0 LED OUTPUT CONFIGURATION DETECTION BOOST, LED CURRENT SINKS AND POWER LINE FET ARE DISABLED IN FAULT RECOVERY STATE FAULT RECOVERY? YES NO VIN_OCP VIN_OVP VIN_UVLO TSD LP8862-Q1 www.ti.com SNVSA75A – NOVEMBER 2015 – REVISED NOVEMBER 2015 7.4 Device Functional Modes 7.4.1 Device States The LP8862-Q1 enters STANDBY mode when the internal LDO output rises above the power-on reset level, VLDO > VPOR. In STANDBY mode the device is able to detect the VDDIO/EN signal. When VDDIO/EN is pulled high, the device powers up. During soft start the external power-line FET is opened gradually to limit inrush current. Soft start is followed by boost (SEPIC) start, during which time VOUT is ramped to the initial value. After boost (SEPIC) start LED outputs are sensed to detect grounded outputs. Grounded outputs are disabled and excluded from the adaptive boost (SEPIC) voltage control loop. If a fault condition is detected, the LP8862-Q1 enters FAULT_RECOVERY state. In this state power line FET is switched off and both the boost (SEPIC) and LED current sinks are disabled. Faults that cause the device to enter FAULT_RECOVERY are shown in Figure 17. When LED open or short is detected, faulty string is disabled but the device stays in ACTIVE mode. Figure 17. State Diagram Copyright © 2015, Texas Instruments Incorporated Submit Documentation Feedback 19 Product Folder Links: LP8862-Q1 |
Similar Part No. - LP8862-Q1 |
|
Similar Description - LP8862-Q1 |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List 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 |