MAX1501ZETE+ by Analog Devices

Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications

Status: Active
Series: MAX1501
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
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. For single-cell Li+ batteries, 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. With 3-cell NiMH/NiCd batteries, the MAX1501 requires collaboration with a microcontroller 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 without interrupting system power. The device achieves high flexibility by providing an adjustable fast-charge current, top-off current, safety timer (disabled in the MAX1501Z), and thermal-regulation setpoint. Other features include input power detection (active-low 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.

Where to Buy

Prices starting from US$2.88

Distributor Stock
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Farnell
from US$3.14
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in stock
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Newark Electronics
from US$4.51
1,171
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element14
from US$3.54
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Features

Stand-Alone 1-Cell Li+ Charging, Microprocessor- Controlled 3-Cell NiMH/NiCd Charging
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 (active-low ACOK) and Charge Enable Input (active-low CHGEN)
Automatic Recharge
Digital Soft-Start Limits Inrush Current
Charge Status Outputs for LEDs or µP Interface

Specifications

Charging VIN (V) (max) 6.25
Max. ICHG (A) 1.4
Cell Chemistry Li-IonLi-PolymerNiCdNiMH
# NiMH/ NiCd Cells 3
# Lithium Ion Cells 1
Protected VIN (V) (max) 13
Charger (V) 4.14.24.54.95
Oper. Temp. (°C) -40 to +85
Package/Pins TQFN/16
BudgetaryPrice (See Notes) 2.45

MAX1501ZETE+ Semiconductors - ICs by Analog Devices

BATTERY CHARGER 1.4A TQFN-16

Semiconductors - ICs
> Power Management ICs - PMIC
> Battery Management
> Battery Charger ICs
Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock
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. For single-cell Li+ batteries, 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. With 3-cell NiMH/NiCd batteries, the MAX1501 requires collaboration with a microcontroller to determine the best charging algorithm. Proprietary thermal-regulation circuitry limits the die tem- perature when fast charging or while exposed to high ambient temperatures, allowing maximum charging cur- rent without damaging the charger. The MAX1501 con- tinually supplies a regulated output voltage under no-battery conditions, allowing battery changing without interrupting system power. 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.

Specifications

Battery Type Li-Ion NiCd NiMH
Input Voltage 13V
Battery Charge Voltage 4.2V
Charge Current Max 1.4A
Battery IC Case Style TQFN
No. of Pins 16Pins
No. of Series Cells 1
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Battery Charger, 1.4A, Tqfn-16 | Newark Electronics
BATTERY CHARGER, 1.4A, TQFN-16 | element14
Highly Integrated, Linear Batt | Analog Devices

Frequently Asked Questions

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This part has not been flagged as RoHS Compliant.

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