LM22676MRE-ADJ/NOPB SOP-8 Integrated circuit Chip IC Electronics China Golden IC Supplier
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LM22676MRE-ADJ/NOPB
3A SIMPLE SWITCHER Step-Down Voltage Regulator with Precision Enable
General Description
The LM22676 series of regulators are monolithic integrated circuits which provide all of the active functions for a stepdown (buck) switching regulator capable of driving up to 3A loads with excellent line and load regulation characteristics. High efficiency (>90%) is obtained through the use of a low ON-resistance N-channel MOSFET. The series consists of a fixed 5V output and an adjustable version. The SIMPLE SWITCHER® concept provides for an easy to use complete design using a minimum number of external components and National’s WEBENCH® design tool. National’s WEBENCH® tool includes features such as external component calculation, electrical simulation, thermal simulation, and Build-It boards for easy design-in. The switching clock frequency is provided by an internal fixed frequency oscillator which operates at 500 kHz. The LM22676 series also has built in thermal shutdown, current limiting and an enable control input that can power down the regulator to a low 25 µA quiescent current standby condition.
Features
■ Wide input voltage range: 4.5V to 42V
■ Internally compensated voltage mode control
■ Stable with low ESR ceramic capacitors
■ 120 mΩ N-channel MOSFET TO-263 THIN package
■ 100 mΩ N-channel MOSFET PSOP-8 package
■ Output voltage options: -ADJ (outputs as low as 1.285V) -5.0 (output fixed to 5V)
■ ±1.5% feedback reference accuracy
■ Switching frequency of 500 kHz
■ -40°C to 125°C operating junction temperature range
■ Precision enable pin
■ Integrated boot diode
■ Integrated soft-start
■ Fully WEBENCH® enabled
■ Step-down and inverting buck-boost applications Package
■ PSOP-8 (Exposed Pad)
■ TO-263 THIN (Exposed Pad)
Applications
■ Industrial Control
■ Telecom and Datacom Systems
■ Embedded Systems
■ Automotive Telematics and Body Electronics
■ Conversions from Standard 24V, 12V and 5V Input Rails
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.
VIN to GND 43V
EN Pin Voltage -0.5V to 6V
SW to GND (Note 2) -5V to VIN
BOOT Pin Voltage VSW + 7V
FB Pin Voltage -0.5V to 7V
Power Dissipation Internally Limited
Junction Temperature 150°C
Soldering Information Infrared (5 sec.) 260°C
ESD Rating (Note 3) Human Body Model ±2 kV
Storage Temperature Range -65°C to +150°C
Operating Ratings (Note 1)
Supply Voltage (VIN) 4.5V to 42V
Junction Temperature Range -40°C to +125°C
A part of stock list
TRANS. FDS4935BZ | FSC | PH5BL | SOP-8 |
C.I LM2576SX-5.0 | TI | 62AY9TOE3 | TO-263 |
C.I BD9701FP-E2 | ROHM | 7B76 | TO-252 |
C.I STM32F103RCT6 | ST | 1606 | LQFP-64 |
DIODO 0603ESDA-TR1 | COOPER | C81X0741 | SMD0603 |
DIODO 1N4148WS-7-F | DIODES | 1614/T4 | SOD323 |
CAP 0603 100NF 50V X7R 06035C104KAT2A | AVX | 1636 | SMD0603 |
TRANS TIP41C | FSC | 908 | TO-220 |
DIODO DL4936-13-F | DIODES | 16+ | MELF |
DIODO 1N4148WS-7-F | DIODES | 1614/T4 | SOD323 |
DIODO 1N5819HW-7-F | DIODES | SL | SOD123 |
TRIMPOT SMD 10K MVR22HXBRN103 | ROHM | 16+ | SMD2*2 |
SN74HC165DR | TI | 8CAVNKM | SOP-16 |
ATMEGA328P-AU | ATMEL | 1631 | TQFP-32 |
ST485BDR | ST | EZ409 | SOP-8 |
MRA4007T3G | ON | R17/432 | SMA |
B360A-E3/61T | VISHAY | 1522/B36 | SMA |
LCDA05.TBT | SEMTECH | 1118/1141/1127 | SOP-8 |
SMBJ28A | VISHAY | MG/1532 | SMB |
ACT4065ASH-T | ACTIVE | SHJD201 | SOP-8 |
ULN2003APWR | TI | 1610+5/63 | TSSOP-16 |
CAP 0603 100NF 50V X7R 06035C104KAT2A | AVX | 1636 | SMD0603 |
TRANS. BC817-16LT1G | ON | 1629/6A | SOT-23 |
C.I 74LVC139D | 1213 | SOP-16 | |
C.I CD4050BE | TI | 57CGGFK/57CGGLK/5BCJTSK | DIP-16 |
TRANS 2SB772-AZ/JM | NEC | PM95 | TO-126 |
A4982SLPTR-T | ALLEGRO | 1628 | TSSOP-24 |
ATMEGA128A-AU | ATMEL | 1602 | TQFP-64 |
U209B-MY | TFK | 914/637 | DIP-14 |
BT136-600E | 618 | TO220 | |
BT137-800E | 603 | TO-220 | |
BTA41-800BRG | STM | 628 | TO-247 |
SB3100 | VISHAY | 16+ | DO-201AD |
BD243C | FAIRCHILD | L08 | TO-220 |
78L12 | WS | 612SB | TO-92 |
1.5KE400CA | VISHAY | 1632 | DO-201AD |
HSMM-A100-S00J1 | AVAGO | 1542 | SMD |
0805PC392KAT1A | AVX | 1632 | SMD0805 |
PS2911-1-F3-A | RENESAS | 1138 | SOP-4 |
RL0805FR-070R091L | YAGEO | 1630 | SMD0805 |
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