參數(shù)資料
型號： MAX1501
廠商： Maxim Integrated Products, Inc.
英文描述： 16-Bit Bus Transceivers And Registers With 3-State Outputs 56-SSOP -40 to 85
中文描述： 高集成度、線性電池充電器，帶有熱調(diào)節(jié)，用于便攜式應用
文件頁數(shù)： 1/15頁
文件大小： 367K
代理商： MAX1501
General Description
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, and thermal-regulation setpoint. Other features
include input power detection (
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.
Applications
Cellular and Cordless Phones
PDAs
Digital Cameras and MP3 Players
USB Appliances
Charging Cradles and Docks
Bluetooth Equipment
Features
o
Stand-Alone or Microprocessor-Controlled (μP)
Linear 1-Cell Li+ or 3-Cell NiMH/NiCd Battery
Charger
o
No FET, Reverse-Blocking Diode, or Current-
Sense Resistor Required
o
1.4A (max) Programmable Fast-Charge Current
o
+95°C, +115°C, and +135°C Proprietary
Programmable Die Temperature Regulation
Control
o
4.5V to 13V Input Voltage Range with Input
Overvoltage (OVLO) Protection Above 6.5V
o
Programmable Top-Off Current Threshold: 10%,
20%, or 30% of the Fast-Charge Current
o
Charge-Current Monitor for Fuel Gauging
o
Programmable Safety Timer (3, 4.5, or 6 hours)
o
Input Power Detection Output (
ACOK
) and Charge
Enable Input (
CHGEN
)
o
Automatic Recharge
o
Digital Soft-Start Limits Inrush Current
o
Charge Status Outputs for LEDs or μP Interface
M
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
________________________________________________________________
Maxim Integrated Products
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.
1
Ordering Information
19-2800; Rev 0; 4/03
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
16 Thin QFN
MAX1501ETE
Pin Configuration appears at end of data sheet.
MAX1501
1
μ
F
INPUT
4.5V TO 13V
2.8k
IN
INP
TEMP
TMAX
SETI
GND
GLED
RLED
10
μ
F
4.2V 1-CELL Li+
R
PULLUP
V
LOGIC
(
≤
5.5V)
BATT
FULLI
VL
SELV
MODE
CHGEN
ACOK
Typical Operating Circuit
Bluetooth is a trademark of Ericsson.
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