 |
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
|
Motor de Búsqueda de Datasheet de Componentes Electrónicos |
|
LTC4230IGN Datasheet(PDF) 27 Page - Linear Technology |
|
|
|||||||||||||||||||||||||||||
LTC4230IGN Datasheet(HTML) 27 Page - Linear Technology |
|
|
27 / 36 page  27 LTC4230 4230f 4 3 2 1 10 µA FB n RZX LTC4230* VCCn SENSE n VZ (TYP) = 26V RSENSE VCC > 15V 200 µA 10 µA CHARGE PUMP R2 *ADDITIONAL DETAILS OMITTED FOR CLARITY 4230 F17 R1 VOUT LOGIC Figure 17. Using an External Resistor to Limit Zener Current in High VCC Applications Figure 18. Autoretry Application HIGH SUPPLY VOLTAGE OPERATION CONSIDERATIONS The LTC4230 can be used with supply voltages ranging from 1.7V to 16.5V. At high input supply voltages, the internal charge pump produces a minimum gate drive voltage of 7V for VCC > 15V. This minimum voltage drive is derived by an internal zener diode clamp circuit, as shown in Figure 17. During PC board insertion or removal, sufficient transient current may flow through this zener diode. To limit the amount of current during transient events, an optional small resistor between the LTC4230’s GATE n pin and the gate of the external MOSFET can be used, as shown in Figure 17. A secondary benefit of this component is to minimize the possibility of high frequency parasitic oscillations in the power MOSFET. APPLICATIO S I FOR ATIO PCB EDGE CONNECTOR (MALE) BACKPLANE CONNECTOR (FEMALE) VCC1 3.3V LONG VCC2 2.5V LONG VCC3 1.8V LONG SHORT RAUTO 1M FAULT GND LONG RSENSE2 0.007 Ω CX2 100nF CX1 100nF RX2 10 Ω M2 IRF7413 VCC1 GND ON FAULT 14 67 8 16 17 18 5 4 3 FB3 1 15 13 SENSE 1 GATE 1 TIMER FILTER VCC2 SENSE 2 GATE 2 SENSE 3 GATE 3 VCC3 RESET 3 2 RSENSE3 0.007 Ω RX1 10 Ω R8 5.1k R9 12k M3 IRF7413 VOUT1 3.3V 5A VOUT2 2.5V 5A VOUT3 1.8V 5A RSENSE1 0.007 Ω CX3 100nF RX3 10 Ω CTIMER* 0.1 µF CFILTER** 15pF CAUTO 0.1 µF M1 IRF7413 Z3 Z2 Z1 * SYSTEM ON TIME: 6.2ms **CIRCUIT BREAKER RESPONSE TIME: 19.5 µs Z1, Z2, Z3: Z1: SMAJ10 NOTE: M1 MOUNTED TO 300mm COPPER AREA WITHOUT CAUTO YIELDS 8% AND M1 CASE = 65°C WITH CAUTO = 0.1µF YIELDS 4% and M1 CASE = 45°C RESET 2 19 FB2 20 R7 10k RESET 1 9 FB1 10 11 12 R10 11k R11 12k R6 10k R12 18k R13 12k 4230 F18 R5 10k MASTER RESET 3-INPUT NOR GATE µP OR SYSTEM LOGIC COUT3 COUT2 COUT1 LTC4230 + + + |
|
Enlace URL |
| ¿ALLDATASHEET es útil para Ud.? [ DONATE ] |
Todo acerca de Alldatasheet | Publicidad | Contáctenos | Política de Privacidad | Enlace a la hoja de datos | 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
