RoHS Compliance Information	Size in Kbytes	Date
LM2734Z/LM2734ZQ Thin SOT23 1A Load Step-Down DC-DC Regulator	452 Kbytes	13-Jun-08	Download

Part Number

Package

Factory Lead Time

Models

Samples & Electronic Orders

Budgetary Pricing

Std Pack Size

Package Marking Format

Type

Pins

Spec.

MSL Rating

Peak Reflow

RoHS Report

CAD Symbols

Weeks

Qty

Qty

$US each

LM2734ZEVAL

Thin SOT23 1A Load Step-Down DC-DC Regulator

Full production

N/A

1+

$38.00

1

-

8 weeks

N/A

LM2734ZMK

TSOT

6

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.75

reel of 1000

SFTB XTT

6 weeks

1000

LM2734ZMKX

TSOT

6

NOPB

1

260

RoHS

N/A

Full production

N/A

1K+

$1.75

reel of 3000

SFTB XTT

6 weeks

15000

LM2734ZQSDE

LLP

6

NOPB

3

260

RoHS

N/A

Full production

N/A

1K+

$2.10

reel of 250

ZXYTT L238B

6 weeks

N/A

LM2734ZQSD

LLP

6

NOPB

3

260

RoHS

N/A

Full production

N/A

1K+

$2.10

reel of 1000

ZXYTT L238B

6 weeks

N/A

LM2734ZSD

LLP

6

NOPB

3

260

RoHS

N/A

Full production

N/A

1K+

$1.75

reel of 1000

ZXYTT L163B

6 weeks

2000

LM2734ZQSDX

LLP

6

NOPB

3

260

RoHS

N/A

Full production

N/A

1K+

$2.10

reel of 4500

ZXYTT L238B

6 weeks

N/A

LM2734ZSDX

LLP

6

NOPB

3

260

RoHS

N/A

Full production

N/A

1K+

$1.75

reel of 4500

ZXYTT L163B

6 weeks

40000

General Description

The LM2734Z regulator is a monolithic, high frequency, PWM step-down DC/DC converter assembled in a 6-pin Thin SOT23 and LLP non pull back package. It 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 LM2734Z 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 world class control circuitry allows for on-times as low as 13ns, thus supporting exceptionally high frequency conversion over the entire 3V to 20V input operating range down to the minimum output voltage of 0.8V. Switching frequency is internally set to 3MHz, allowing the use of extremely small surface mount inductors and chip capacitors. Even though the operating frequency is very high, efficiencies up to 85% are easy to achieve. External shutdown is included, featuring an ultra-low stand-by current of 30nA. The LM2734Z utilizes current-mode control and internal compensation to provide high-performance regulation over a wide range of operating conditions. Additional features include internal soft-start circuitry to reduce inrush current, pulse-by-pulse current limit, thermal shutdown, and output over-voltage protection.

Reliability Metrics

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