MAX1501ETE Maxim Integrated Products, MAX1501ETE Datasheet

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MAX1501ETE

Manufacturer Part Number
MAX1501ETE
Description
Battery Management Linear Bat Charger w/Thermal Reg
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1501ZETE.pdf (16 pages)

Specifications of MAX1501ETE

Product
Charge Management
Battery Type
Li-Ion, Li-Polymer, NiCd, NiMH
Operating Supply Voltage
0 V to 13 V
Supply Current
5 mA
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Package / Case
TQFN-16
Charge Safety Timers
Yes
Mounting Style
SMD/SMT
Temperature Monitoring
Yes
Uvlo Start Threshold
4 V
Uvlo Stop Threshold
4.25 V

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The MAX1501 intelligent, constant-current, constant-
voltage (CCCV), temperature-regulated battery charger
charges a single lithium-ion (Li+) cell or three-cell
NiMH/NiCd batteries. The device integrates the current-
sense resistor, PMOS pass element, and thermal-
regulation circuitry, while eliminating the reverse-
blocking Schottky diode to create the simplest charging
solution for hand-held equipment.
The MAX1501 functions as a stand-alone charger to
control the charging sequence from the prequalification
state through fast charge, top-off, and charge termination
for single-cell Li+ or three-cell NiMH/NiCd batteries.
Alternatively, the MAX1501 collaborates with a host
microprocessor to determine the best charging algorithm.
Proprietary thermal-regulation circuitry limits the die
temperature when fast charging or while exposed to high
ambient temperatures, allowing maximum charging
current without damaging the charger. The MAX1501
continually supplies a regulated output voltage under
no-battery conditions, allowing battery changing.
The device achieves high flexibility by providing an
adjustable fast-charge current, top-off current, safety
timer (disabled in the MAX1501Z), and thermal-regula-
tion setpoint. Other features include input power detec-
tion (ACOK) and input under-/overvoltage protection.
The MAX1501 provides active-low control inputs.
The MAX1501 accepts a 4.5V to 13V supply, but
disables charging when the input voltage exceeds
6.5V, preventing excessive power dissipation. The
MAX1501 operates over the extended temperature
range (-40°C to +85°C) and is available in a compact
16-pin thermally enhanced 5mm x 5mm thin QFN
package with 0.8mm profile.
19-2800; Rev 1; 3/04
Pin Configuration appears at end of data sheet.
Bluetooth is a trademark of Ericsson.
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.
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
Cellular and Cordless Phones
PDAs
Digital Cameras and MP3 Players
USB Appliances
Charging Cradles and Docks
Bluetooth™ Equipment
________________________________________________________________ Maxim Integrated Products
General Description
Applications
MAX1501ETE
MAX1501ZETE
4.5V TO 13V
Stand-Alone or Microprocessor-Controlled (µP)
Linear 1-Cell Li+ or 3-Cell NiMH/NiCd Battery
Charger
No FET, Reverse-Blocking Diode, or Current-
Sense Resistor Required
1.4A (max) Programmable Fast-Charge Current
+95°C, +115°C, and +135°C Proprietary
Programmable Die Temperature Regulation
Control
4.5V to 13V Input Voltage Range with Input
Overvoltage (OVLO) Protection Above 6.5V
Programmable Top-Off Current Threshold: 10%,
20%, or 30% of the Fast-Charge Current
Charge-Current Monitor for Fuel Gauging
Programmable Safety Timer (3, 4.5, or 6 hours)
Input Power Detection Output (ACOK) and Charge
Enable Input (CHGEN)
Automatic Recharge
Digital Soft-Start Limits Inrush Current
Charge Status Outputs for LEDs or µP Interface
1µF
INPUT
PART
2.8kΩ
Typical Operating Circuit
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
Ordering Information
IN
INP
MAX1501/MAX1501Z
GLED
RLED
TEMP
TMAX/I.C.
SETI
GND
CHGEN
MODE
FULLI
ACOK
BATT
SELV
VL
PIN-PACKAGE
16 Thin QFN
16 Thin QFN
Features
10µF
4.2V 1-CELL Li+
(≤ 5.5V)
V
LOGIC
R
PULLUP
1

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MAX1501ETE Summary of contents

Page 1

... Charge-Current Monitor for Fuel Gauging Programmable Safety Timer (3, 4. hours) Input Power Detection Output (ACOK) and Charge Enable Input (CHGEN) Automatic Recharge Digital Soft-Start Limits Inrush Current Charge Status Outputs for LEDs or µP Interface PART MAX1501ETE MAX1501ZETE INPUT 4.5V TO 13V Applications 1µF Features Ordering Information ...

Page 2

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications ABSOLUTE MAXIMUM RATINGS IN, INP, RLED, GLED to GND ................................-0.3V to +14V IN to INP ................................................................-0.3V to +0.3V VL, BATT, SETI, ACOK, MODE, CHGEN, SELV, FULLI, TMAX/I.C., TEMP to ...

Page 3

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications ELECTRICAL CHARACTERISTICS (continued) = 3.5V, ACOK = GLED = RLED = TEMP = TMAX/I.C. = FULLI = open, CHGEN = MODE = GND 5V, ...

Page 4

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications ELECTRICAL CHARACTERISTICS = 3.5V, ACOK = GLED = RLED = TEMP = TMAX/I.C. = FULLI = open, CHGEN = MODE = GND 5V, V ...

Page 5

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications ELECTRICAL CHARACTERISTICS (continued) = 3.5V, ACOK = GLED = RLED = TEMP = TMAX/I.C. = FULLI = open, CHGEN = MODE = GND 5V, ...

Page 6

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications = 5V, ACOK = RLED = GLED = TEMP = TMAX/I.C. = FULLI = open INP otherwise noted.) OUTPUT VOLTAGE vs. INPUT VOLTAGE 4.0 ...

Page 7

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications PIN NAME High-Current Charger Input. Connect an AC adapter to INP and IN as close to the device as possible. 1 INP INP provides charge current to the battery. ...

Page 8

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications INP CS SETI I REF IN VL ACOK RLED GLED Figure 1. Functional Diagram 8 _______________________________________________________________________________________ MAX1501/MAX1501Z OUTPUT DRIVER AND LOGIC TEMP REF TEMPERATURE SHUTDOWN UVLO VL REF OVLO ...

Page 9

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications DISABLE CHGEN = HIGH MODE = LOW CHARGER OFF ACOK = LOW RLED = OFF GLED = OFF Figure 2. MAX1501 Charge State Diagram _______________________________________________________________________________________ MAX1501 ONLY OFF CHARGER ...

Page 10

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications DISABLE CHGEN = HIGH MODE = LOW CHARGER OFF ACOK = LOW RLED = OFF GLED = OFF Figure 3. MAX1501Z Charge State Diagram Detailed Description Modes of Operation ...

Page 11

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications Table 2. Battery Regulation Voltage CHARGING MODE GND Li+ 4.1V NiMH/NiCd 4.5V Connect CHGEN and MODE to GND to place the MAX1501 in Li+ charging mode. The Li+ charger ...

Page 12

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications Table 3. RLED and GLED Behavior MODE • 10% current-limited precharge • Current-limited charge • Voltage-limited charge before top-off Li+ Mode or • Temperature-limited charge before top-off NiMH/NiCd Mode ...

Page 13

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications Thermal-Regulation Selection Set the regulated die temperature of the MAX1501 with the TEMP three-level logic input. The MAX1501 reduces the charge current to limit the die temperature to the ...

Page 14

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications 4.75V TO 6. ADAPTER 1µF INP MAX1501/MAX1501Z GLED RLED TMAX/I.C. SETI 2.8kΩ CHGEN GND GND Figure 7. Stand-Alone 3-Cell NiMH or NiCd Battery Charger Figure 7 shows ...

Page 15

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications 5V 5.1kΩ 2.24kΩ 10kΩ 10kΩ AT +25°C Figure 11. Battery Temperature Protection Figure 11 shows a circuit that adds temperature protec- tion to the battery. Install the ...

Page 16

... 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. 16 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products ...

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