Product Summary

The LM2734ZMK is a 1A Load Step-Down DC-DC Regulator. It is a monolithic, high frequency, PWM step-down DC/DC converter in a 6-pin Thin SOT23 package. The LM2734ZMK provides all the active functions to provide local DC/DC conversion with fast transient response and accurate regulation in the smallest possible PCB area. With a minimum of external components and online design support through WEBENCH, the LM2734ZMK is easy to use. The ability to drive 1A loads with an internal 300mΩ NMOS switch using state-of-the-art 0.5µm BiCMOS technology results in the best power density available. The applications of the LM2734ZMK are Local Point of Load Regulation, Core Power in HDDs, Set-Top Boxes, Battery Powered Devices, USB Powered Devices, DSL Modems, Notebook Computers.

Parametrics

LM2734ZMK absolute maximum ratings: (1)VIN: -0.5V to 24V; (2)SW Voltage: -0.5V to 24V; (3)Boost Voltage: -0.5V to 30V; (4)Boost to SW Voltage: -0.5V to 6.0V; (5)FB Voltage: -0.5V to 3.0V; (6)EN Voltage: -0.5V to (VIN + 0.3V); (7)Junction Temperature: 150℃; (8)ESD Susceptibility: 2kV; (9)Storage Temp. Range: -65℃ to 150℃; (10)Soldering Information: Infrared/Convection Reflow (15sec): 220℃, Wave Soldering Lead Temp. (10sec): 260℃.

Features

LM2734ZMK features: (1)Thin SOT23-6 package; (2)3.0V to 20V input voltage range; (3)0.8V to 18V output voltage range; (4)1A output current; (5)550kHz switching frequencies; (6)300mΩ NMOS switch; (7)30nA shutdown current; (8)0.8V, 2% internal voltage reference; (9)Internal soft-start; (10)Current-Mode, PWM operation; (11)WEBENCH online design tool.

Diagrams

LM2734ZMK Connection Diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
LM2734ZMK
LM2734ZMK

National Semiconductor (TI)

DC/DC Switching Regulators

Data Sheet

0-1000: $1.17
1000-5000: $1.13
LM2734ZMK/NOPB
LM2734ZMK/NOPB

National Semiconductor (TI)

DC/DC Switching Regulators

Data Sheet

0-1: $2.47
1-25: $1.99
25-100: $1.81
100-250: $1.63
LM2734ZMKX/NOPB
LM2734ZMKX/NOPB

National Semiconductor (TI)

DC/DC Switching Regulators

Data Sheet

0-2080: $1.17
2080-3000: $1.17
3000-5000: $1.13
LM2734ZMKX
LM2734ZMKX

National Semiconductor (TI)

DC/DC Switching Regulators

Data Sheet

0-3000: $1.17
3000-6000: $1.13