Os motores de busca de Datasheet de Componentes eletrônicos |
|
TS51111 Folha de dados(PDF) 10 Page - Semtech Corporation |
|
TS51111 Folha de dados(HTML) 10 Page - Semtech Corporation |
10 / 22 page TS51111 Final Datasheet Rev 2.2 April 17, 2015 www.semtech.com 10 of 22 Semtech Proprietary & Confidential Electrical Characteristics, T J = -40C to 85C, PDC = PACKP = 4.2V (unless otherwise noted) Symbol Parameter Condition Min Typ Max Unit Temperature Sensing T SHUTDOWN Over-temperature shutdown threshold Temperature rising 170 C T HYST Over-temperature shutdown hysteresis 10 C V TSENSE Temperature Sensor Voltage 25C 0.725 .75 0.775 V TCV TSENSE Temperature Coefficient 0C to 85C 2.4 mV/C Current Sensing IBSENSE GAIN Battery current sense amp gain PACKN - AGND 10mV to 20mV; Gain setting = 20 19.6 20 20.4 V/V IOSENSE GAIN Output current sense amp gain PACKP - PACKS 10mV to 20mV Gain setting = 20; PACKP = 5V 19.6 20 20.4 V/V IBSENSE V OFFSET Battery current sense amp offset PACKN - AGND = 20mV; Gain setting = 20; 25C -0.5 0 0.5 mV IOSENSE V OFFSET Output current sense amp offset PACKP - PACKS = 20mV Gain = 20; PACKP = 5V; 25C -0.5 0 0.5 mV V IB,MAX Full range amp output 750 mV V IO,MAX Full range amp output 750 mV VAC Detect V OH Output high voltage Totem-pole configuration only. 100uA load. VCORE- 100mV V V OL Output low voltage Totem-pole or open-drain configurations. 100uA load. 100 mV I OFF Output leakage Output leakage in open-drain off-state. 0.1 uA R dson,VAC_DETECT Switch Resistance Output resistance to GND in open-drain on-state. 10 Ω Functional Description Synchronous Rectifier The bridge rectifier in the TS51111 has a synchronous controller which shunts the forward bias of the bridge diodes. This allows the TS51111 to provide currents of up to 3.2A to be efficiently transferred without significant power dissipation. The primary side of the bridge can stand-off up to 20V. On the secondary side, a capacitive load on the PDC pin can be used to help attenuate the voltage signal observed on both sides of the bridge rectifier. External boost capacitors CB1 and CB2 allow use of efficient high side nmos switches. The rectifier is disabled by default and will remain in an asynchronous mode until incoming power is detected or EN_SW or EN_PRE are asserted. In asynchronous mode, the bridge FETs will not switch and voltage rectification will occur through the parasitic diodes of the FETs. In this mode, current draw in the IC is minimal. The bridge can be forced into asynchronous (no FET switching) or half synchronous (LS FET only switching) operation at any time using the CNFG register using the ASYNC or HSYNC bits respectively. This can be used to improve efficiency at light loads where the switching losses of the bridge would exceed the conduction losses of the parasitic diodes. Load Switch / Blocking FET The integrated low impedance blocking switch provides a direct charging path to the battery and disconnects the output from the rectified signal until the system has been successfully configured. Control of the switch is achieved through the I2C interface. An integrated charge pump guarantees maximum drive strength is available for the FET when operated as a switch. When hard switched, gate drive is slewed slowly to limit inrush current from the PDC cap to the battery. |
Nº de peça semelhante - TS51111 |
|
Descrição semelhante - TS51111 |
|
|
Ligação URL |
Privacy Policy |
ALLDATASHEETPT.COM |
ALLDATASHEET é útil para você? [ DONATE ] |
Sobre Alldatasheet | Publicidade | Contato conosco | Privacy Policy | roca de Link | 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 |