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ISL6299 の電気的特性と機能

ISL6299のメーカーはIntersil Corporationです、この部品の機能は「Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources」です。


製品の詳細 ( Datasheet PDF )

部品番号 ISL6299
部品説明 Li-ion/Li-Polymer Battery Charger Accepting Two Power Sources
メーカ Intersil Corporation
ロゴ Intersil Corporation ロゴ 




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ISL6299 Datasheet, ISL6299 PDF,ピン配置, 機能
®
Data Sheet
March 17, 2005
ISL6299
FN9184.0
Li-ion/Li-Polymer Battery Charger
Accepting Two Power Sources
The ISL6299 is a fully integrated low-cost single-cell Li-ion or
Li-polymer battery charger. The charger accepts two power
inputs, normally one from a USB (Universal Serial Bus) port
and the other from a desktop cradle. The ISL6299 is an ideal
charger for smart handheld devices that need to
communicate with a personal computer via USB.
The ISL6299 features 28V and 7V maximum voltages for the
cradle and the USB inputs respectively. Due to the 28V
rating for the cradle input, low-cost, large output tolerance
adapters can be used safely. When both inputs are powered,
the cradle input is used to charge the battery. The charge
current is programmable for the cradle input with a small
resistor. The end-of-charge current for the cradle input is
also programmable by another external resistor. The charger
incorporates Thermaguard™ which protects the IC against
over temperature. If the die temperature rises above a
typical value of 100°C, a thermal foldback function reduces
the charge current automatically to prevent further
temperature rise. The charger preconditions the battery with
low current when the battery voltage is below 2.6V. The
charger has two indication pins. The PPR (power present)
pin outputs an open-drain logic LOW when either the cradle
or the USB input power is attached. The CHG (charge) pin is
also an open-drain output that indicates a logic LOW when
the charge current is above a minimum current level. When
the charge current is below the minimum current, the CHG
pin indicates a logic HIGH signal and the status is latched.
The latch will be reset at one of these events: (1) the part is
disabled and re-enabled; (2) the selected input source has
been removed and re-applied, (3) The USBON turns LOW,
or (4) The BAT pin voltage falls below the CV mode
threshold.
Ordering Information
PART #
TEMP.
RANGE (°C) PACKAGE
PKG.
DWG. #
ISL6299IRZ (Note)
-40 to 85 10 Ld 3x3 DFN L10.3x3
(Pb-free)
ISL6299IRZ-T (Note) 10 Ld 3x3 DFN Tape and Reel (Pb-free)
Intersil Pb-free products employ special Pb-free material sets;
molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with
both SnPb and Pb-free soldering operations. Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Features
• Complete Charger for Single-Cell Li-ion/Polymer Batteries
• Dual Input Power Sources for Cradle and USB
• Low Component Count
• Integrated Pass Element
• Fixed 380mA USB Charge Current
• Programmable Cradle Charge Current
• Charge Current Thermaguard™ for Thermal
Protection
• 28V Maximum Voltage for the Cradle Input
• Charge Indication
• Adapter Presence Indication
• Less than 0.5µA Leakage Current off the Battery when No
Input Power Attached
• Programmable end-of-charge current with latch for Cradle
Input
• Ambient Temperature Range: -40°C to 85°C
• Pb-Free Available (RoHS Compliant)
Applications
• Smart Handheld Devices
• Cell Phones, PDAs, MP3 Players
• Digital Still Cameras
• Handheld Test Equipment
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
• Technical Brief TB389 “PCB Land Pattern Design and
Surface Mount Guidelines for QFN Packages”
Pinout
ISL6299 (DFN)
TOP VIEW
CRDL 1
USB 2
PPR 3
CHG 4
EN 5
10 BAT
9 ICDL
8 GND
7 USBON
6 IMIN
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-352-6832 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005. All Rights Reserved. Thermaguard is a trademark of Intersil Americas Inc.
All other trademarks mentioned are the property of their respective owners.

1 Page





ISL6299 pdf, ピン配列
ISL6299
Typical Applications
A Simple Charger Accepting Power from Both a USB Port and a Desktop Cradle
TOCRADLE
CONNECTOR
TO USB
C1
CONNECTOR
R1
C2
RIMIN
CRDL
USB
IMIN
BAT
ICDL
USBON
PPR
CHG
EN
GND
R IC D
L
ON
OFF
R2
D1
DISABLE
ENABLE
TO BATTERY
C3
R3
D2
RICDL
RIMIN
R2, R3
C1, C2, C3
R1
D1, D2
COMPONENT SELECTION
28.71kfor 0.55A cradle charge current
158kfor 80mA end-of-charge current
350
1µF ceramic capacitor
1
LEDs
A Simple Charger with Programmable Charge Current and Wide Input Voltage Range
TOCRADLE
CONNECTOR
C1
CRDL
USB
RIMIN
IMIN
BAT
ICDL
USBON
PPR
CHG
EN
GND
R IC D L
R2
D1
DISABLE
ENABLE
TO BATTERY
C3
R3
D2
RICDL
RIMIN
R2, R3
C1, C3
R1
D1, D2
COMPONENT SELECTION
28.71kfor 0.55A cradle charge current
158kfor 80mA end-of-charge current
350
1µF ceramic capacitor
1
LEDs
3 FN9184.0
March 17, 2005


3Pages


ISL6299 電子部品, 半導体
ISL6299
GND (Pin 8)
System ground.
ICDL (Pin 9)
The ICDL pin has two functions. The first function is to
program the cradle charge current during the constant-
current mode. The voltage of this pin is 1.22V during the
constant-current mode of the cradle charger. The constant-
current mode current is programmed by the following
equations:
ICLD= 1---R-6---I6--C-8---D-5---.L--5-- – 0.026
0.1A < ICLD < 0.7A
ICDL= 2---R-1---I2--C-4---D-2---.L--1-- – 0.188
0.7A < ICDL < 1.1A
where RICDL is the resistor in Ω, connected to the ICDL pin
(see the Typical Application).
It is recommended that the charge current be programmed
in the range of 350mA to 650mA.
The second function of the ICDL pin is to monitor the actual
charge current. The voltage of this pin, VICDL, is proportional
to the actual charge current, ICHG.
The cradle charge current should be programmed equal or
higher than the USB current; otherwise, the ICDL pin voltage
will be higher than 1.22V during the constant current mode
when the USB charger is working. The charger still works
properly but the accuracy of the current monitoring voltage
degrades and saturates at approximately 2.1V.
BAT (Pin 10)
Charger output pin. Connect this pin to the battery pack or
the battery cell. A 1µF or larger value ceramic capacitor is
recommended for decoupling. The charger relies on the
battery for stability so a battery should always be connected
to the BAT pin.
Description
The ISL6299 is designed for a single-cell Li-ion or Li-polymer
battery charging circuit that accepts both a USB port and a
desktop cradle as its power source. While the charge current
from the USB input source is fixed at 380mA, the charge
current from the cradle input is programmable between 0.1A
and 1.0A by the resistor RICDL. Similarly, the end-of-charge
current is fixed at typically 80mA for the USB input and
programmable for the cradle input by the resistor RIMIN.
Input Auto Selection
When both input sources are present, the charger selects
only one power source to charge the battery. When the
CRDL input is higher than the POR threshold, CRDL is
selected as the power source. Otherwise the USB input is
selected. If the CRDL input voltage is below the battery
voltage but the USB input voltage is higher than the battery
voltage, then the USB input is used to charge the battery.
The control circuit always breaks both internal power
devices before switching from one power source to the other
to avoid a cross conduction of both power MOSFETs.
USB Charge Current
When the USB port is selected as the power source, the
charge current enabled by the logic input at the USBON pin.
When the USBON is driven to logic LOW, the charger is
disabled. When the USBON is driven to logic HIGH, the
charge current is fixed at a typical value of 380mA. Thus for
the USB input, the USBON pin has a similar function as the
EN pin. The following table describes the USB charge
control by both the USBON pin and EN pin:
TABLE 1. USB CHARGE CONTROL
EN = LOW
EN = HIGH
USBON = LOW
USBON = HIGH
Disabled
Enabled
Disabled
Disabled
The USBON pin is equivalent to a logic LOW when left
floating. Typically the P-channel MOSFET for the USB input
has an rDS(ON) of 700mat room temperature. With a
380mA charge current, the typical head room is 260mV.
Thus, if the input voltage drops to a level that the voltage
difference between the USB pin and the BAT pin is less than
260mV, the rDS(ON) becomes a limiting factor of the charge
current; and the charger drops out the constant current
regulation.
Cradle Charge Current
The cradle charge current is enabled by the EN pin only, the
USBON pin has no control on the cradle charge current. The
cradle charge current is programmed with the external
resistor connected between the ICDL pin and the GND pin.
The current can be calculated with one of the equations
given in the ICDL pin description. Two equations are used
for the cradle current calculation, each corresponds to a
different range of currents. The typical rDS(ON) of the
P-channel MOSFET for the CRDL input is 600mat room
temperature. When the head room between the input and
output voltages is small, the actual charge current, similar to
the USB case, could be limited by the rDS(ON). On the other
hand, if the head room between the input and output
voltages is large, the charge current may be limited by the
thermal foldback threshold.
Floating Charge Voltage
The floating voltage during the constant voltage phase is
4.2V. The floating voltage has an 1% accuracy over the
ambient temperature range of -40°C to 70°C.
6 FN9184.0
March 17, 2005

6 Page



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