전자부품 데이터시트 검색엔진 |
|
LM2621 데이터시트(PDF) 3 Page - Texas Instruments |
|
LM2621 데이터시트(HTML) 3 Page - Texas Instruments |
3 / 18 page LM2621 www.ti.com SNVS033C – MAY 2004 – REVISED MARCH 2005 ELECTRICAL CHARACTERISTICS Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range of −40°C to +85°C. Unless otherwise specified: VDD= VOUT= 3.3V. Symbol Parameter Condition Typ Min Max Units VIN_ST Minimum Start-Up Supply Voltage(1) ILOAD = 0mA 1.1 1.2 V VIN_OP Minimum Operating Supply Voltage ILOAD = 0mA 0.65 V (once started) VFB FB Pin Voltage 1.24 1.2028 1.2772 V VOUT_M Maximum Output Voltage 14 V AX VHYST Hysteresis Voltage(2) 30 45 mV η Efficiency VIN = 3.6V; VOUT = 5V; ILOAD = 500mA 87 % VIN = 2.5V; VOUT = 3.3V; ILOAD = 200mA 87 D Switch Duty Cycle 70 60 80 % IDD Operating Quiescent Current(3) FB Pin > 1.3V; EN Pin at VDD 80 110 µA ISD Shutdown Quiescent Current(2) VDD, BOOT and SW Pins at 5.0V; 0.01 2.5 µA EN Pin <200mV ICL Switch Peak Current Limit 2.85 A RDS_ON MOSFET Switch On Resistance 0.17 Ω Enable Section VEN_LO EN Pin Voltage Low(4) 0.15VDD V VEN_HI EN Pin Voltage High(4) 0.7VDD V (1) Output in regulation, VOUT = VOUT (NOMINAL) ± 5% (2) This is the total current into pins VDD, BOOT, SW and FREQ. (3) This is the current into the VDD pin. (4) When the EN pin is below VEN_LO, the regulator is shut down; when it is above VEN_HI, the regulator is operating. PIN DESCRIPTION Pin Name Function 1 PGND Power Ground 2 EN Active-Low Shutdown Input 3 FREQ Frequency Adjust. An external resistor connected between this pin and Pin 6 (VDD) sets the switching frequency of the LM2621. 4 FB Output Voltage Feedback 5 SGND Signal Ground 6 VDD Power Supply for Internal Circuitry 7 BOOT Bootstrap Supply for the Gate Drive of Internal MOSFET Power Switch 8 SW Drain of the Internal MOSFET Power Switch Copyright © 2004–2005, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM2621 |
유사한 부품 번호 - LM2621_15 |
|
유사한 설명 - LM2621_15 |
|
|
링크 URL |
개인정보취급방침 |
ALLDATASHEET.CO.KR |
ALLDATASHEET 가 귀하에 도움이 되셨나요? [ DONATE ] |
Alldatasheet는? | 광고문의 | 운영자에게 연락하기 | 개인정보취급방침 | 링크교환 | 제조사별 검색 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 |