Maxim > Products > Supervisors, Voltage Monitors, Sequencers > MAX16016, MAX16020, MAX16021

MAX16016, MAX16020, MAX16021

Low-Power μP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating

Industry's Most Sophisticated Battery-Backup Supervisory Circuits with Chip-Enable Gating and Power-Supply Monitoring

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The MAX16016/MAX16020/MAX16021 supervisory circuits monitor power supplies, provide battery-backup control, and chip-enable (CE) gating to write protect memory in microprocessor (µP)-based systems. These low-power devices improve system reliability by providing several supervisory functions in a small, single integrated solution.

The MAX16016/MAX16020/MAX16021 perform four basic system functions:

Provide a µP reset output during V_CC supply power-up, power-down, and brownout conditions.
Control V_CC to battery-backup switching internally to maintain data or low-power operation for memories, real-time clocks (RTCs), and other digital logic when the main power is removed.
Provide memory write protection through internal chip-enable gating during brownout.
Provide a combination of additional supervisory functions listed in the Features section in the full data sheet.

The MAX16016/MAX16020/MAX16021 operate from a 1.53V to 5.5V supply voltage and offer fixed reset thresholds for monitoring 5V, 3.3V, 3V, 2.5V, and 1.8V systems. Each device is available with either a push-pull or open-drain reset output.

The MAX16016/MAX16020/MAX16021 are available in small TDFN/TQFN packages and are fully specified for an operating temperature range of -40°C to +85°C.

Data Sheet

Download	Rev 6	(PDF, 459.2kB)
E-Mail

Key Features

System Monitoring for 5V, 3.3V, 3V, 2.5V, or 1.8V Power-Supply Voltages
1.53V to 5.5V Operating Voltage Range
Low 1.2µA Supply Current (0.25µA in Battery-Backup Mode)
145ms (min) Reset Timeout Period
Battery Freshness Seal
On-Board Gating of CE Signals, 1.5ns Propagation Delay (MAX16020/MAX16021)
Debounced Manual Reset Input
Watchdog Timer, 1.2s (typ) Timeout
Power-Fail Comparator and Low-Line Indicator for Monitoring Voltages Down to 0.6V
Battery-On, Battery-OK, and Battery Test Indicators
Small 10-Pin TDFN or 16-Pin TQFN Packages
Underwriters Laboratories (UL) Recognized

Applications/Uses

GPS Systems
Industrial Control
Main/Backup Power for RTCs, CMOS Memories
Point-of-Sale Equipment
Portable/Battery Equipment
Set-Top Boxes

Key Specifications:

Battery Backup Circuits

Part Number

Reset Thresh.
(V)

Reset Out

I_CC
(µA)

Features

Oper. Temp.
(°C)

Package/Pins

Smallest Available Pckg.
(mm²)

Budgetary Price

max

max w/pins

See Notes

MAX16016

1.2 to 1.8

1.8 to 2.5

2.5 to 3.3

3.3 to 5.5

Active Low

Open Drain

Push-Pull

Batt Freshness Seal

Battery On

Manual Reset

Power Fail Comparator

Watchdog

-40 to +85

TDFN-EP/10

9.6

$3.48 @1k

MAX16020

Active Low

Open Drain

Push-Pull

Batt Freshness Seal

Battery On

Chip Enable Gate

Low Line

Manual Reset

Power Fail Comparator

Watchdog

TQFN/16

16.8

$3.05 @1k

MAX16021

Active High

Active Low

Open Drain

Push-Pull

Batt Freshness Seal

Battery On

Chip Enable Gate

Low Line

Manual Reset

Power Fail Comparator

Watchdog

TQFN/16

16.8

$3.38 @1k

See All Battery Backup Circuits (86)

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 Application Circuit

Reliability Reports

Reliability Report:	MAX16016.pdf MAX16020.pdf MAX16021.pdf
Show FIT data for:
Underwriters Laboratories (UL) Recognized

Software/Models

none

Ordering Information

Filters:

Part Number:

Package:

Temperature:

Tape and Reel

Sample

Devices: 1-50 / 75

<-- Previous 1 2 Next -->

Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX16016LTBL+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016LTBM+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016LTBR+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016LTBS+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016LTBT+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016LTBV+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016LTBW+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016LTBY+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016LTBZ+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBL+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX16016PTBM+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBR+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBS+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBT+			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016PTBT+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016PTBV+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16016PTBW+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBY+T			Active	TDFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16016PTBZ+T			Active	TDFN-EP;10 pin;9.6 mm² Outline Drawing:21-0137 (PDF) Land Pattern: 90-0003 (PDF) Use pkgcode/variation: T1033+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTEL+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-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
MAX16020LTEM+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020LTER+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTER+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTES+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTET+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTET+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16020LTEV+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020LTEW+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020LTEY+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020LTEZ+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
Part Number	Free Sample	Buy	Status	Package: TYPE PINS FOOTPRINT DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX16020PTEL+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTEM+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTER+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTES+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTET+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTEV+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTEW+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTEY+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16020PTEZ+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16021LTEL+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-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
MAX16021LTEL+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTEM+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTEM+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16021LTER+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTER+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTES+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTES+T			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTET+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX16021LTET+T			Active	QFN; Land Pattern: Not Available	-40°C to +85°C	See data sheet
MAX16021LTEV+			Active	TQFN;16 pin;16.8 mm² Outline Drawing:21-0139 (PDF) Land Pattern: 90-0070 (PDF) Use pkgcode/variation: T1644+4*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis

Devices: 1-50 / 75

<-- Previous 1 2 Next -->

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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Document Ref.: 19-4145 Rev 6; 2011-11-15
This page last modified: 2011-11-15

Low-Power μP Supervisory Circuits with Battery-Backup Circuit and Chip-Enable Gating

Status

Description

Data Sheet

Key Features

Applications/Uses

Key Specifications:

Diagram

Reliability Reports

Software/Models

Ordering Information

Similar Products by Function

Similar Products by Application

More Information

Didn't Find What You Need?

Information Index

Overview

Technical Documents

Ordering Info

Related Products