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General Description

The MAX6125/MAX6141/MAX6145/MAX6150/MAX6160

low-dropout, micropower, three-terminal voltage refer-

ences offer 2.5V, 4.096V, 4.5V, 5.0V, and adjustable

(1.23V to 12.4V) output voltages, respectively. Low,

200mV dropout makes these devices ideal for 3V and

5V systems. Unlike two-terminal references that waste

battery current and require an external resistor, the

MAX61xx family’s supply current is virtually independent

of input voltage variations, which translates to longer

battery life.

Initial accuracy for these devices is

1%. The output

temperature coefficient is typically 15ppm/°C, and

guaranteed to be less than 50ppm/°C (except

for the MAX6160). The MAX6125/MAX6141/MAX6145/

MAX6150 are available in 3-pin SOT23 and 8-pin SO

packages. The MAX6160 is available in 4-pin SOT143

and 8-pin SO packages.

Features

♦ 3-Pin SOT23 Package

(MAX6125/MAX6141/MAX6145/MAX6150)

4-Pin SOT143 Package (MAX6160)

♦ Low, 200mV Dropout Voltage

♦ 75µA Supply Current, Independent of

Input Voltage

♦ 15ppm/°C Typical Tempco (50ppm/°C, max)

♦ Stable for All Capacitive Loads up to 10nF

♦ Adjustable Output Voltage from

1.23V to (V

- 0.2V) (MAX6160)

♦ Optimized for 3V/5V Operation

Applications

3V/5V Systems

Battery-Powered Systems

Portable and Hand-Held Equipment

Data-Acquisition Systems

Instrumentation and Process Control

MAX6125/MAX6141/MAX6145/MAX6150/MAX6160

SOT23, Low-Cost, Low-Dropout,

3-Terminal Voltage References

________________________________________________________________ Maxim Integrated Products 1

N.C.

N.C. (ADJ)

OUT

N.C.

GND

MAX6125

MAX6141

MAX6145

MAX6150

MAX6160

TOP VIEW

( ) ARE FOR MAX6160 ONLY

GND

OUT

MAX6125

MAX6141

MAX6145

MAX6150

SOT23-3

OUT

ADJ

GND

MAX6160

SOT143-4

Pin Configurations

PART

MAX6125ESA

MAX6125EUR-T -40°C to +85°C

-40°C to +85°C

TEMP

RANGE

PIN-

PACKAGE

8 SO

3 SOT23-3

Ordering Information

Selector Guide

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

TOP

MARK

—

EBAA

PART

MAX6125

MAX6141

MAX6145

MAX6150

4.096

2.5

PRESET OUTPUT

VOLTAGE (V)

PIN-

PACKAGE

3 SOT23/8 SO

4.5 3 SOT23/8 SO

3 SOT23/8 SO

MAX6160

Adjustable

(1.23 to 12.40)

4 SOT143/8 SO

19-1177; Rev. 1; 10/02

Ordering Information continued on last page.

Typical Operating Circuit appears on last page.

MAX6141ESA

-40°C to +85°C 8 SO —

MAX6141EUR-T -40°C to +85°C 3 SOT23-3 ECAA

Summary of content (9 pages)

PAGE 1
9-1177; Rev. 1; 10/02 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References Features ♦ 3-Pin SOT23 Package (MAX6125/MAX6141/MAX6145/MAX6150) 4-Pin SOT143 Package (MAX6160) ♦ Low, 200mV Dropout Voltage ♦ 75µA Supply Current, Independent of Input Voltage ♦ 15ppm/°C Typical Tempco (50ppm/°C, max) ♦ Stable for All Capacitive Loads up to 10nF ♦ Adjustable Output Voltage from 1.23V to (VIN - 0.
PAGE 2
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References ABSOLUTE MAXIMUM RATINGS (Voltages With Respect to GND) IN .......................................................................-0.3V to +13.5V OUT, ADJ...................................................-0.3V to (VIN + 0.3V) Output Short-Circuit Duration (to IN or GND).............Continuous Continuous Power Dissipation (TA = +70°C) 8-Pin SO (derate 5.9mW/°C above +70°C)....................
PAGE 3
SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 ELECTRICAL CHARACTERISTICS—MAX6145 (VIN = 4.7V, IOUT = 0mA, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER Supply Voltage SYMBOL VIN Output Voltage VOUT Output Voltage Temperature Coefficient Output Voltage Noise Line Regulation TCVOUT en Quiescent Supply Current Change in Supply Current vs. Change in Input Voltage TA = TMIN to TMAX MIN TYP MAX UNITS 12.6 V 4.500 4.545 4.
PAGE 4
ELECTRICAL CHARACTERISTICS—MAX6160 (VIN = 2.7V; IOUT = 0mA; R1 = 215kΩ ±0.1%, R2 = 208kΩ ±0.1% (circuit of Figure 1); TA = +25°C; unless otherwise noted.) (Notes 1, 2) PARAMETER SYMBOL Supply Voltage CONDITIONS VIN Output Voltage Range Output Voltage VOUT ADJ Feedback Voltage Threshold VADJ ADJ Input Current IADJ Output Voltage Temperature Coefficient TCVOUT Output Voltage Noise en ∆VOUT/∆VIN Line Regulation Quiescent Supply Current TYP 2.7 TA = TMIN to TMAX 1.23 TA = +25°C 2.
PAGE 5
SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References MAX6125/MAX6160 OUTPUT VOLTAGE vs. SOURCE CURRENT 2.500 1.0 VOUT = 4.096V (MAX6141) 0.5 4.096 OUTPUT VOLTAGE (V) 1.5 4.097 MAX6125-TOC05 VOUT = 5.0V (MAX6150) OUTPUT VOLTAGE (V) LOAD REGULATION (mV/mA) VOUT = 4.5V (MAX6145) 2.0 2.501 MAX6125-TOC04 2.5 MAX6141 OUTPUT VOLTAGE vs. SOURCE CURRENT 2.499 2.498 2.497 MAX6125-TOC06 LOAD REGULATION (SINKING) vs. TEMPERATURE 4.095 4.094 4.093 VOUT = 2.5V (MAX6125/MAX6160) 2.
PAGE 6
_____________________________Typical Operating Characteristics (continued) (VIN = VIN(MIN), IOUT = 0mA, TA = +25°C, unless otherwise noted.) 0 -0.5 -1.0 0.1 4 6 8 10 12 14 0 -0.1 80 60 40 -0.2 20 -50 INPUT VOLTAGE (V) *With respect to output voltage at VIN = VIN(MIN). 120 100 -0.3 2 140 PSRR (dB) 0.5 0.2 MAX6125-TOC014 VALID OVER VIN(MIN) TO VIN(MAX) FOR EACH PART CHANGE IN OUTPUT VOLTAGE** (%) MAX6125-TOC013 1.0 POWER-SUPPLY REJECTION RATIO vs.
PAGE 7
SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References PIN NAME FUNCTION SO SOT23-3 SOT143 1 2 4 OUT Reference Output 2, 3, 5*, 6, 7 — — N.C. No Connection. Not internally connected. 4 3 1 GND Ground 5** — 2 ADJ Adjustable output voltage feedback input. Connect a resistor divider between OUT, ADJ, and GND (Figure 1). 8 1 3 IN Input Voltage *Except MAX6160. **MAX6160 only.
PAGE 8
MAX6125/MAX6141/MAX6145/MAX6150/MAX6160 SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References Ordering Information (continued) PART TEMP RANGE PINPACKAGE MAX6145ESA -40°C to +85°C 8 SO MAX6145EUR-T -40°C to +85°C 3 SOT23-3 MAX6150ESA -40°C to +85°C 8 SO MAX6150EUR-T -40°C to +85°C 3 SOT23-3 MAX6160ESA -40°C to +85°C 8 SO MAX6160EUS-T -40°C to +85°C 4 SOT143-4 TOP MARK Typical Operating Circuit VIN = (VOUT + 200mV) to 12.6V — EDAA — IN EEAA — JXAA 0.
PAGE 9
SOT23, Low-Cost, Low-Dropout, 3-Terminal Voltage References SOT23 L.EPS Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.