Analog Devices Inc.（ADI） MAX6776LTA+T

View All Display Drivers by Analog Devices Inc.（ADI）

Part Number:
MAX6776LTA+T
Manufacturer:
Analog Devices Inc.（ADI）
Category:
Display Drivers
RoHs:
RoHS Compliant
Datasheet:
MAX6776LTA+T_Datesheet
Description:
IC BATT MON MULTI-CHEM 1CL 6UDFN
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Specifications

Type

Paramete

Type

Paramete

Fault Protection

Operating Temperature

-40°C ~ 85°C (TA)

Grade

Function

Battery Monitor

Interface

Package / Case

6-WFDFN

Qualification

Number of Cells

Mounting Type

Surface Mount

Supplier Device Package

6-µDFN (1.5x1)

Battery Chemistry

Multi-Chemistry

Overview

MAX6776LTA+T Datasheet Summary

1. Basic Information

Part Number: MAX6776LTA+T
Manufacturer: Maxim Integrated
Device Type: Low‑Power, 1%‑Accurate Single‑Channel Battery Monitor
Hysteresis: Factory‑trimmed 0.5% (suffix “A”)
Output Type: Active‑low, open‑drain LBO
Package: 6‑pin µDFN (1.0 mm × 1.5 mm), L611‑1
Packaging: Tape‑and‑Reel, Lead‑free / RoHS‑compliant
Top Mark: BY
Temperature Range: −40 °C to +85 °C (extended industrial)
Application: Single Li‑ion cell or multicell alkaline/NiCd/NiMH battery monitoring

2. Key Features

1% threshold accuracy over temperature
Ultra‑low quiescent current: typ 3 µA, max 7 µA
Single low‑battery output (LBO, open‑drain, active‑low)
Factory‑fixed 0.5% hysteresis eliminates output chatter
Valid logic output down to VBATT = 1 V
Low input leakage: ±5 nA max for LBI
Immune to short battery transients
Tiny 6‑pin µDFN package
Push‑pull / open‑drain output flexibility (this device: open‑drain)

3. Absolute Maximum Ratings

Supply voltage (BATT to GND): −0.3 V to +6 V
LBO (open‑drain) to GND: −0.3 V to +6 V
Continuous power dissipation (TA = 70 °C): 68 mW
Junction temperature: +150 °C
Storage temperature: −65 °C to +150 °C
Lead temperature (soldering, 10 s): 300 °C

4. Electrical Specifications (VBATT = 1.6 V to 5.5 V, TA = −40 °C to 85 °C)

表格

Parameter	Conditions	Min	Typ	Max	Unit
Operating Voltage Range	−40 °C to 85 °C	1.2	—	5.5	V
Quiescent Current I<sub>Q</sub>	V<sub>BATT</sub> = 3.7 V, no load	—	3	7	µA
LBI Falling Threshold (0.5% hysteresis)	—	1.2037	1.2159	1.2280	V
LBI Rising Threshold	—	1.2098	1.222	1.2342	V
LBI Input Leakage	0.2 V ≤ V<sub>LBI</sub> ≤ V<sub>BATT</sub> − 0.2 V	−5	—	+5	nA
LBO Output Low V<sub>OL</sub>	V<sub>BATT</sub> ≥ 1.6 V, I<sub>SINK</sub> = 100 µA	—	—	0.3	V
LBO Leakage Current	Open‑drain, not asserted, V<sub>LBO</sub> = 5.5 V	−100	—	+100	nA
Propagation Delay t<sub>PD</sub>	V<sub>LBI</sub> ±100 mV	—	—	9	µs
Startup Time	V<sub>BATT</sub> rising above 1.6 V	—	—	3	ms

5. Pin Configuration (6‑Pin µDFN, Top View)

表格

Pin	Name	Function
1	GND2	Reserved; connect to GND
2	GND	System ground
3	LBI	Low‑battery monitor input (resistor divider from battery)
4	LBO	Open‑drain, active‑low low‑battery output
5	N.C.	No internal connection
6	BATT	Battery supply input

6. Functional Description

Monitors voltage at LBI against factory‑trimmed thresholds with 0.5% hysteresis
LBO asserts (pulls low) when VLBI < falling threshold
LBO deasserts (high‑Z) when VLBI > rising threshold
Hysteresis prevents chattering from noise or load‑step recovery
Open‑drain LBO requires external pullup resistor (up to 6 V)
Ideal for early low‑battery warning in portable electronics

7. Typical Applications

Single‑cell Li‑ion battery packs
Multicell alkaline/NiMH/NiCd devices
Cell phones, cordless phones, pagers
Portable medical devices, PDAs, MP3 players
Electronic toys, battery‑powered sensors

8. Application Guidelines

Use a resistive divider from BATT to LBI to set trip voltage
Keep LBI leakage low with high‑value resistors (≤2.8 MΩ recommended)
Place 0.1 µF bypass cap close to BATT and GND for noise immunity
Open‑drain LBO can be pulled up to a different voltage rail (≤6 V)

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