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MAX1735

200mA, Negative-Output, Low-Dropout Linear Regulator in SOT23

Ultra-Small, 200mA Negative Output LDO in SOT23

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX1735 negative-output, low-dropout linear regulator operates from a -2.5V to -6.5V input and delivers a guaranteed 200mA with a low 80mV dropout. The high-accuracy (±1%) output voltage is preset or can be adjusted from -1.25V to -5.5V with an external resistive voltage-divider.

An internal N-channel MOSFET allows for a low 85µA quiescent current virtually independent of the load, making this device ideal for battery-powered portable equipment, such as PDAs, mobile phones, cordless phones, and wireless data modems.

The device is available in several preset output voltage versions: -5.0V, -3.0V, and -2.5V. All versions offer a 1nA low-power shutdown mode, short-circuit protection, and thermal overload protection. The device is offered in a tiny 5-pin SOT23 package.

Data Sheet

Download	Rev 1	(PDF, 308kB)
E-Mail

Key Features

Guaranteed 200mA Output Current
Low 80mV Dropout Voltage at 200mA
Low 85µA Quiescent Supply Current
Low 1nA Current Shutdown Mode
Stable with 1µF C_OUT
PSRR > 60dB at 100Hz
Thermal Overload Protection
Short-Circuit Protection
-5.0V, -3.0V, or -2.5V Output Voltage or Adjustable (-1.25V to -5.5V)
Tiny SOT23-5 Package

Applications/Uses

Access Products
Cell Phones
Cordless Phones
Digital Cameras and Camcorders
Glucose Meters
Handhelds (GPS, POS Terminal)
HDD and RAID
PC Add-In Cards
Power Supplies

Key Specifications:

Linear Regulators

Part Number

Regulators

V_IN
(V)

Preset V_OUT
(V)

Adj. V_OUT
(V)

V_DROPOUT @Rated I_LOAD
(V)

Rated I_LOAD
(mA)

I_CC
(µA)

Output Voltage Noise
(µV RMS)

Ref. Bypass

Low Batt./ Pwr. Fail Out

Watchdog

Reverse Batt. Protect.

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

min

max

min

max

typ

max

typ

max w/pins

See Notes

MAX1735

-2.5

-6.5

-5.0

-3.0

-2.5

-1.25

-5.5

0.08

200

180

160

-40 to +85

SOT/5

$1.10 @1k

See All Linear Regulators (146)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Diagram

Typical Operating Circuit

Application Notes

Application Note 1861		Pass Transistor Boosts Current from Negative Linear Regulator
Application Note 3198		Modified LDO Sinks PECL-Termination Current
Application Note 3627		Modified LDO Regulator Sinks PECL-Termination Current
Application Note 4404		Using a Linear Regulator to Produce a Constant Current Source

Reliability Reports

Reliability Report:	MAX1735.pdf
Show FIT data for:

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1735EUK25			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1735EUK25+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1735EUK25+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1735EUK25-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1735EUK30			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1735EUK30+			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1735EUK30+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1735EUK30-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1735EUK50			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1735EUK50+T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1735EUK50-T			Active	SOT;5 pin;9 mm² Outline Drawing:21-0057 (PDF) Land Pattern: 90-0174 (PDF) Use pkgcode/variation: U5-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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More Information

Topmark Coding	MAX1735
New Product Press Release	[ 2000-07-18 ]

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-1783 Rev 1; 2003-11-01
This page last modified: 2009-11-06