MAX1782ETM+C8F

Manufacturer Part NumberMAX1782ETM+C8F
DescriptionBattery Management Adv Smart Battery Pack Controller
ManufacturerMaxim Integrated
SeriesMAX1782
MAX1782ETM+C8F datasheet
 


Specifications of MAX1782ETM+C8F

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19-1662; Rev 1; 10/00
Charger for Current-Limited Supply
General Description
The MAX1736 is a simple, low-cost, single-cell lithium-
ion (Li+) battery charger for small hand-held applica-
tions. When accompanied by a current-limited voltage
source (such as a wall cube), the MAX1736 provides
simple, accurate charging and termination control for
single-cell Li+ batteries. The MAX1736EUT42 is preset
to a 4.2V battery regulation voltage, while the
MAX1736EUT41 is preset to 4.1V.
The MAX1736 initiates charging in one of four ways:
battery insertion, charger power-up, battery voltage
threshold, and by external manipulation of the EN pin.
The device features an internal precharge current
source that safely charges near-dead cells, as well as
input-supply detection that shuts down the MAX1736
when the supply is removed to minimize battery current
drain.
The MAX1736 accepts input voltages up to 22V, mak-
ing it compatible with a wide range of input supplies. It
has a single control input yet offers stand-alone and
microprocessor-controlled operation. The MAX1736 is
packaged in a small SOT23-6 package. An evaluation
kit (EV kit) is available to reduce design time.
________________________Applications
Single-Cell Li+ Portable Applications
Wireless Handsets
Personal Digital Assistants
Digital Cameras
Small Hand-Held Equipment
Self-Charging Battery Packs
Cradle Chargers
Typical Operating Circuit
CURRENT-LIMITED
VOLTAGE SOURCE
PFET
GATE
IN
BATT
MAX1736
ON
EN
GND
OFF
CT
________________________________________________________________ Maxim Integrated Products
For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
SOT23, Single-Cell Li+ Battery
o Small 6-Pin SOT23 Package
o Stand-Alone or µP-Controlled Operation
o 0.5% Voltage Set-Point Accuracy
o Lowest Power Dissipation
o Low 4.7V min Input Voltage
o Top-Off Charging to Achieve Full Battery Capacity
o No Inductor Required
o Safely Precharges Near-Dead Cells
o Automatic Power-Down when Input Power
Removed
PART
MAX1736EUT42-T
MAX1736EUT41-T
Note: Requires special solder temperature profile
described in the Absolute Maximum Ratings Section.
TOP VIEW
BATTERY
Features
Ordering Information
TEMP.
PIN-
SOT
RANGE
PACKAGE
MARK
-40°C to +85°C 6 SOT23-6
AAHO
-40°C to +85°C 6 SOT23-6
AANC
Pin Configuration
IN
1
6
BATT
MAX1736
GATE
2
5
CT
GND
3
4
EN
SOT23
1

MAX1782ETM+C8F Summary of contents

  • Page 1

    ... BATT MAX1736 ON EN GND OFF CT ________________________________________________________________ Maxim Integrated Products For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. SOT23, Single-Cell Li+ Battery o Small 6-Pin SOT23 Package o Stand-Alone or µP-Controlled Operation o 0.5% Voltage Set-Point Accuracy o Lowest Power Dissipation o Low 4 ...

  • Page 2

    SOT23, Single-Cell Li+ Battery Charger for Current-Limited Supply ABSOLUTE MAXIMUM RATINGS IN, GATE to GND....................................................-0.3V to +26V BATT, EN GND ..............................................-0.3V to +6V GATE to IN................................................................-6V to +0.3V GATE Continuous Current.................................-10mA to +10mA Continuous Power Dissipation (T = ...

  • Page 3

    SOT23, Single-Cell Li+ Battery Charger ELECTRICAL CHARACTERISTICS (continued 10V 4.2V for MAX1736EUT42 or 4.1V for MAX1736EUT41 BATT unless otherwise noted.) PARAMETER CT Pullup Current Minimum On-Time C Minimum Off-Time C EN Pullup Resistance ELECTRICAL ...

  • Page 4

    SOT23, Single-Cell Li+ Battery Charger for Current-Limited Supply (T = +25°C, unless otherwise noted.) A MINIMUM ON/OFF-TIMES vs 10,000 MINIMUM 1000 ON-TIME MINIMUM 100 OFF-TIME 10 0 (µF) CT INPUT DETECTION INTERVAL vs. C 1000 ...

  • Page 5

    SOT23, Single-Cell Li+ Battery Charger PIN NAME Input Voltage from Current-Limited Voltage Source (22V max). Bypass to GND with a 0.1µ capacitor. The charging current is set by the current limit of the external power supply. Gate Drive ...

  • Page 6

    SOT23, Single-Cell Li+ Battery Charger for Current-Limited Supply V + 100mV BATT 350k 10µA 1.4V CT 0.4V 2µA Figure 1. Functional Diagram Once the switch turns off, it remains off for at least the minimum off-time. After the minimum off-time, ...

  • Page 7

    SOT23, Single-Cell Li+ Battery Charger CHARGER POWER REMOVED (FROM ANY STATE) SHUTDOWN FET: OFF TOP-OFF QUAL FET: OFF EVERY CYCLE TOP-OFF FET: PULSED Figure 2. State Machine FET are the minimum drain-source breakdown voltage and the minimum turn-on threshold voltage ...

  • Page 8

    ... 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. 8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2000 Maxim Integrated Products ...