MAX17015 Maxim Integrated Products, MAX17015 Datasheet

MAX17015

Manufacturer Part Number

MAX17015

Description

(MAX17005 - MAX17015) High-Performance Chargers

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX17015.pdf (24 pages)

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The MAX17005/MAX17006/MAX17015 are high-frequen-

cy multichemistry battery chargers. These circuits fea-

ture a new high-frequency current-mode architecture

that significantly reduces component size and cost*.

The charger uses a high-side MOSFET with n-channel

synchronous rectifier. Widely adjustable charge current,

charge voltage, and input current limit simplify the con-

struction of highly accurate and efficient chargers.

The charge voltage and charge current are set with

analog control inputs. The charge current setting can

also be adjusted with a PWM input. High-accuracy cur-

rent-sense amplifiers provide fast cycle-by-cycle cur-

rent-mode control to protect against short circuits to the

battery and respond quickly to system load transients.

In addition, the charger provides a high-accuracy ana-

log output that is proportional to the adapter current. In

the MAX17015, this current monitor remains active

when the adapter is absent to monitor battery dis-

charge current.

The MAX17005 charges three or four Li+ series cells,

and the MAX17006 charges two or three Li+ series

cells. The MAX17015 adjusts the charge voltage setting

and the number of cells through a feedback resistor-

divider from the output. All variants of the charger can

provide at least 4A of charge current with a 10mΩ

sense resistor.

The charger utilizes a charge pump to control an n-channel

adapter selection switch. The charge pump remains

active even when the charger is off. When the adapter

is absent, a p-channel MOSFET selects the battery.

The MAX17005/MAX17006/MAX17015 are available in

a small, 4mm x 4mm x 0.8mm 20-pin, lead-free TQFN

package. An evaluation kit is available to reduce

design time.

19-4041; Rev 0; 2/08

* Patent pending.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Notebook Computers

Tablet PCs

Portable Equipment with Rechargeable Batteries

________________________________________________________________ Maxim Integrated Products

General Description

Applications

High-Performance Chargers

♦ High Switching Frequency (1.2MHz)

♦ Controlled Inductor Current-Ripple Architecture

♦ ±0.4% Accurate Charge Voltage

♦ ±2.5% Accurate Input-Current Limiting

♦ ±3% Accurate Charge Current

♦ Single-Point Compensation

♦ Monitor Outputs for

♦ Analog/PWM Adjustable Charge-Current Setting

♦ Battery Voltage Adjustable for 3 and 4 Cells

♦ Adjustable Battery Voltage (4.2V to 4.4V/Cell)

♦ Cycle-by-Cycle Current Limit

♦ Programmable Charge Current < 5A

♦ Automatic System Power Source Selection with

♦ Internal Boost Diode

♦ +8V to +26V Input Voltage Range

+ Denotes a lead-free package.

Pin Configuration and Minimal Operating Circuit appear at

end of data sheet.

MAX17005ETP+

MAX17006ETP+

MAX17015ETP+

Reduced BOM Cost

Small Inductor and Output Capacitors

±2.5% Accurate Input Current Limit

±2.5% Battery Discharge Current

AC Adapter Detection

(MAX17005) or 2 and 3 Cells (MAX17006)

Battery Short-Circuit Protection

Fast Response for Pulse Charging

Fast System-Load-Transient Response

n-Channel MOSFET

PART

(MAX17015 only)

1.2MHz Low-Cost,

-40°C to +85°C

TEMP RANGE

Ordering Information

PIN-

PACKAGE

20 Thin QFN

(4mm x 4mm)

20 Thin QFN

(4mm x 4mm)

20 Thin QFN

(4mm x 4mm)

Features

T2044-3

CODE

PKG

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