MAX6777LT+T Maxim Integrated Products, MAX6777LT+T Datasheet

IC MONITOR BAT LP 6-UDFN

MAX6777LT+T

Manufacturer Part Number
MAX6777LT+T
Description
IC MONITOR BAT LP 6-UDFN
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX6777LT+T

Function
Battery Monitor
Battery Type
Alkaline, Li-Ion, NiCd, NiMH
Voltage - Supply
1 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
6-WFDFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
MAX6777LT+TTR
The MAX6775–MAX6781 low-power, 1%-accurate bat-
tery monitors are available in the ultra-small µDFN
package (1.0mm x 1.5mm) and SC70 packages. These
low-power devices are ideal for monitoring single lithi-
um-ion (Li+) cells, or multicell alkaline/NiCd/NiMH
power sources. These devices offer single (MAX6775/
MAX6776/MAX6777/MAX6778) or dual (MAX6779/
MAX6780/MAX6781) low-battery outputs and feature
fixed or resistor-adjustable hysteresis. Hysteresis elimi-
nates the output chatter sometimes associated with bat-
tery voltage monitors, usually due to input-voltage noise
or battery terminal voltage recovery after load removal.
These devices are available in several versions: with
single- or dual-voltage monitors, and with fixed or
adjustable hysteresis. The MAX6775/MAX6776 offer a
single battery monitor and factory-set hysteresis of
0.5%, 5%, or 10%. The MAX6779/MAX6780/MAX6781
have two battery monitors in a single package and fac-
tory-set hysteresis of 0.5%, 5%, or 10%. The MAX6777/
MAX6778 offer a single battery monitor with external
inputs for the rising and falling thresholds, allowing
external hysteresis control.
For convenient interface with system power circuitry or
microprocessors, both open-drain and push-pull out-
puts are available. The single-channel devices are
available with open-drain or push-pull outputs. The
dual-channel devices are available with both outputs
open-drain, both outputs push-pull, or one of each
(see the Selector Guide ). This family of devices is
offered in small 5-pin SC70 and ultra-small 6-pin µDFN
packages, and is fully specified over the -40°C to
+85°C extended temperature range.
19-3774; Rev 4; 5/09
Pin Configurations appear at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Battery-Powered Systems (Single-Cell Li+ or
Multicell NiMH, NiCd, Alkaline)
Cell Phones/Cordless Phones
Pagers
Portable Medical Devices
PDAs
Electronic Toys
MP3 Players
________________________________________________________________ Maxim Integrated Products
General Description
Monitors in µDFN and SC70 Packages
Applications
Low-Power, 1%-Accurate Battery
o 1.0%-Accurate Threshold Specified Over
o Single/Dual, Low-Battery Output Options
o Low 3µA Battery Current
o Open-Drain or Push-Pull Low-Battery Outputs
o Fixed or Adjustable Hysteresis
o Low-Input Leakage Current Allows Use of Large
o Guaranteed Valid Low-Battery-Output Logic State
o Immune to Short Battery Transients
o Fully Specified from -40°C to +85°C
o Small 5-Pin SC70 or Ultra-Small 6-Pin µDFN
Ordering Information continued at end of data sheet.
+ Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
MAX6775/MAX6776/MAX6779/MAX6780/MAX6781 are available
with factory-trimmed hysteresis. Specify trim by replacing “_”
with “A” for 0.5%, “B” for 5%, or “C” for 10% hysteresis.
MAX6775XK_+T
MAX6775LT_+T
MAX6776XK_+T
MAX6776LT_+T
MAX6777XK+T
MAX6777LT+T
Temperature
Resistors
Down to V
(1mm x 1.5mm) Package
3.6V
PART
BATT
Typical Operating Circuit
LBI
= 1V
MAX6775
Ordering Information
BATT
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
LBO
SHDN
IN
PIN-PACKAGE
5 SC70
6 µDFN
5 SC70
6 µDFN
5 SC70
6 µDFN
CONVERTER
Features
DC-DC
OUT
1

Related parts for MAX6777LT+T

MAX6777LT+T Summary of contents

Page 1

... PART MAX6775XK_+T MAX6775LT_+T MAX6776XK_+T MAX6776LT_+T MAX6777XK+T MAX6777LT+T Ordering Information continued at end of data sheet. + Denotes a lead(Pb)-free/RoHS-compliant package Tape and reel. MAX6775/MAX6776/MAX6779/MAX6780/MAX6781 are available with factory-trimmed hysteresis. Specify trim by replacing “_” with “A” for 0.5%, “B” for 5%, or “C” for 10% hysteresis. ...

Page 2

Low-Power, 1%-Accurate Battery Monitors in µDFN and SC70 Packages ABSOLUTE MAXIMUM RATINGS BATT to GND............................................................-0.3V to +6V LBI, LBL, LBH, LBI1, LBI2 to GND ...............-0.3V to minimum of ((V LBO, LBO1, LBO2 to GND (open-drain) .................-0.3V to +6V LBO, LBO1, ...

Page 3

Monitors in µDFN and SC70 Packages ELECTRICAL CHARACTERISTICS (continued 1.6V to 5.5V -40°C to +85°C, unless otherwise specified. Typical values are at T BATT A PARAMETER SYMBOL LOW-BATTERY OUTPUTS (LBO, LBO1, LBO2) Propagation Delay t Startup ...

Page 4

Low-Power, 1%-Accurate Battery Monitors in µDFN and SC70 Packages (T = +25°C, unless otherwise noted.) A NORMALIZED THRESHOLD VOLTAGES vs. TEMPERATURE, MAX67__A 1 NORMALIZED +25° RISING -1 FALLING - -40 -15 10 ...

Page 5

Low-Power, 1%-Accurate Battery Monitors in µDFN and SC70 Packages MAX6775/ MAX6777/ MAX6776 MAX6778 µDFN SC70 µDFN SC70 1 1 — — — — — 5 — ...

Page 6

Low-Power, 1%-Accurate Battery Monitors in µDFN and SC70 Packages Detailed Description These battery monitors have an active-low output that asserts when the input falls below a set voltage. They also offer hysteresis for noise immunity, and to remove the possibility ...

Page 7

Monitors in µDFN and SC70 Packages The MAX6779, MAX6780, and MAX6781 monitor two battery levels or two independent voltages. A common application for this type of dual-battery monitor is to use one output as an early warning signal and the ...

Page 8

... BATT RISING _ LBO OUTPUT PART MAX6775XK_+T Single MAX6775LT_+T Single MAX6776XK_+T Single MAX6776LT_+T Single MAX6777XK+T Single MAX6777LT+T Single MAX6778XK+T Single MAX6778LT+T Single MAX6779LT_+T Dual MAX6780LT_+T Dual MAX6781LT_+T Dual 8 _______________________________________________________________________________________ and finally, calculate R using the fol- H For monitoring higher voltages, supply power to BATT ...

Page 9

... T = Tape and reel. MAX6775/MAX6776/MAX6779/MAX6780/MAX6781 are available with factory-trimmed hysteresis. Specify trim by replacing “_” with “A” for 0.5%, “B” for 5%, or “C” for 10% hysteresis. _______________________________________________________________________________________ Low-Power, 1%-Accurate Battery TOP MARK MAX6777XK+T ASA MAX6777LT+T ASB MAX6778XK+T ASC MAX6778LT+T BU MAX6779LTA+T BW MAX6779LTB+T ...

Page 10

Low-Power, 1%-Accurate Battery Monitors in µDFN and SC70 Packages TOP VIEW + GND2 1 MAX6775 2 GND MAX6776 LBI 3 SC70 + LBH 1 5 BATT MAX6777 GND 2 MAX6778 LBL 3 4 LBO SC70 For the latest package outline ...

Page 11

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 11 © 2009 Maxim Integrated Products ...

Related keywords